Re: Multiple instances of Tomcat

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Arghya,

On 4/27/16 12:37 AM, Arghya Das wrote:
> I am using JSP as the language and Tomcat 7 as the Server to deploy
> Web applications and Using ECLIPSE as the IDE to build the apps on
> Windows 7 platform..
> 
> I have installed Tomcat as a service in Windows and also linked the
> Tomcat server with Eclipse. but the tomcat is behaving in two
> different ways. when i try to run the webapp by starting tomcat
> through Eclipse it behaves like a standalone instance. and when i
> try to start it through windows service it behaves like a different
> instance.
> 
> Like when i am trying to place a database config, file in Tomcat
> directory and call it in a servlet file by using "catalina.base"
> running Tomcat through Eclipse the changes don't take effect.
> 
> while when i manually build the war file and upload and run Tomcat
> as a windows service it works fine.

When Eclipse deploys a web application onto Tomcat, it (I believe)
always uses a split-configuration, with a separate catalina.home and
catalina.base.

So the catalina.base being used by Eclipse may not be the one that you
expect. Try dumping the value of the "catalina.base" system property
from one of your JSPs, and compare the values you get from the
Eclipse-launched webapp and the Windows-Service-launched webapp.

- -chris
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Multiple instances of Tomcat

[Arghya Das]

Hi all,

I am using JSP as the language and Tomcat 7 as the Server to deploy Web
applications and Using ECLIPSE as the IDE to build the apps on Windows 7
platform..

I have installed Tomcat as a service in Windows and also linked the Tomcat
server with Eclipse.
but the tomcat is behaving in two different ways.
when i try to run the webapp by starting tomcat through Eclipse it behaves
like a standalone instance.
and when i try to start it through windows service it behaves like a
different instance.

Like when i am trying to place a database config, file in Tomcat directory
and call it in a servlet file by using "catalina.base"  running Tomcat
through Eclipse the changes don't take effect.

while when i manually build the war file and upload and run Tomcat as a
windows service it works fine.

Please help.

regards,
Arghya

Re: Multiple instances?

[Mark Thomas]

On 26/01/2015 16:13, Billy Bones wrote:
 Hi Markt, my wiki alias username is ArKam and my Real username is
 GaelTherond, thank you very much.

You should have access now.

Mark


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Re: Multiple instances?

[Billy Bones]

Hi guys, thank for your informations regarding the Wiki, I've finally
managed to create my account ^^ (later is better than never as we said over
there :D) and as expected to add a new entry on the FAQ/HowTo I need to be
whitelisted or granted to edit mode, so if a moderator could add me it
would be nice.

PS: I've found something bizarre on the systemd init process regarding
Tomcat, if I set the CONNECTOR_PORT variable to something (let said 8081)
on the /etc/sysconfig/tomcat-${SERVICE_NAME} it is not use but rather
overrided by the tomcat server.xml file.
Until now, nothing strange, the weird part is that if I disable the
HTTP-BIO or AJP-BIO connectors values on this file tomcat load the unit
without binding any network port at all.

Shouldn't it be suppose tu use the one specified by the CONNECTOR_PORT
variable or did I missed something?

2014-12-23 20:47 GMT+01:00 Christopher Schultz ch...@christopherschultz.net
:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA256

 Billy,

 On 12/19/14 1:37 PM, Billy Bones wrote:
  For sure, do I need an account or something special?

 You can sign-up yourself.

  Could you send me the wiki link?

 http://wiki.apache.org/tomcat/

 Choose login at the top of the page and then choose the you can
 create one now at the bottom of the page login page.

 Once you have an account, I think you'll need to be white-listed to
 actually make modifications. Just email a moderator or the whole list
 to request write access to the Wiki.

 - -chris

  2014-12-19 17:05 GMT+01:00 Christopher Schultz
  ch...@christopherschultz.net
  :
 
  Billy,
 
  On 12/19/14 4:46 AM, Billy Bones wrote:
  hum OK many thanks for your hints, I got it, I understand
  what is going on now. Ok, I now have a clean and multiple
  instances running !!
 
  Thanks to everyone!
 
  @Mark Eggers: CentOS systemd units are not quite so far from
  the Fedora ones. Personally I do love the way fedora and
  CentOS are working but I have to confess that sometimes, and
  especially with tomcat everything is a pain in the ass as
  they scatter the components everywhere in the system without
  any (apparent) logics.
 
  WTH with all this /usr/share/blabla ??
 
  @Christopher: Many thanks for your advices, obviously it make
  more sens to keep the catalina_base and derivate the
  catalina_home. I love this method!!
 
  Once again, many thanks to everyone, I now have a clean and
  working server!
 
  Great. Care to post your systemd script template to the wiki? It
  will likely help others trying to do the same thing.
 
  -chris
 
  2014-12-18 19:46 GMT+01:00 Mark Eggers
  its_toas...@yahoo.com.invalid:
 
  On 12/18/2014 10:07 AM, Christopher Schultz wrote:
  Billy,
 
  On 12/18/14 9:25 AM, Billy Bones wrote:
  Ok s, here is a small update.
 
  I've finally found what does this SERVICE_NAME mean,
  indeed you have to copy the original unit, then add
  the Systemd's directive named Environment like this:
 
  Environment=SERVICE_NAME=YOUROWNSERVICENAMEHERE
 
  then you will copy the default tomcat config file
  found on the /etc/sysconfig directory.
 
  And as you supposed it Cristophe and Daniel, you then
  have to copy the whole CATALINA_{HOME/BASE} or update
  the previous config file to point out to another
  tomcat installation.
 
  You should not have to copy the whole CATALINA_HOME.
  Instead, create a CATALINA_BASE (which is basically
  just a few directories and a few configuration files)
  for each service and then set the CATALINA_BASE
  environment variable to point to each one for each
  service, set CATALINA_HOME to point to where the full
  installation of Tomcat is (with no web applications
  installed in it), and each service should operate
  independently.
 
  So you should be able to have something like this:
 
  SERVICE_NAME=tomcat-one
  CATALINA_HOME=/opt/apache-tomcat-7.0.57
  CATALINA_BASE=/opt/tomcat/tomcat-one
 
  SERVICE_NAME=tomcat-two
  CATALINA_HOME=/opt/apache-tomcat-7.0.57
  CATALINA_BASE=/opt/tomcat/tomcat-two
 
  Then you configure /opt/tomcat/tomcat-(one|two) to have
  the configuration and applications you want.
 
  You should be able to start tomcat-one and tomcat-two
  independently of each other. I don't know exactly what
  systemd does with all of this, but once you end up
  calling catalina.sh with the right environment
  variables set, Tomcat will do the right thing.
 
  -chris
 
  Fedora 21 has a relatively nice systemd script for Tomcat.
  It's designed for running multiple Tomcat instances.
 
  If you have a copy of Fedora 21 and yumdownloader (by
  installing yum-utils), you can take a look at the system
  with:
 
  mkdir Temp cd Temp yumdownloader tomcat.noarch rpm2cpio
  tomcat-7.0.54-3.fc21.noarch.rpm | cpio -idmv
 
  All of the files are then accessible in the Temp directory.
 
  I've never liked how Fedora / RedHat / CentOS scatter the
  components all over the landscape. I'm thinking of adapting
  the Fedora systemd scripts to work with Tomcats installed
  under

Re: Multiple instances?

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

Billy,

On 1/26/15 8:57 AM, Billy Bones wrote:
 PS: I've found something bizarre on the systemd init process
 regarding Tomcat, if I set the CONNECTOR_PORT variable to something
 (let said 8081) on the /etc/sysconfig/tomcat-${SERVICE_NAME} it is
 not use but rather overrided by the tomcat server.xml file.

That's not surprising, since Tomcat uses the contents of server.xml to
configure the connectors, and does not look at any environment
variables for anything.

Where is CONNECTOR_PORT documented? I suspect it's something supported
by the systemd scripts simply to differentiate between various Tomcat
servers but doesn't have any bearing on the actual runtime
configuration. Remember that Tomcat can bind to an arbitrary number of
ports, so having a single CONNECTOR_PORT doesn't really make much sense.

 Until now, nothing strange, the weird part is that if I disable
 the HTTP-BIO or AJP-BIO connectors values on this file tomcat load
 the unit without binding any network port at all.

That's expected behavior: it's possible that Tomcat is coming up with
no Connectors configured, and that some other software component will
then configure the connectors after the server is running. Think of an
embedded use-case and it becomes easier to understand how this would
not be an error.

 Shouldn't it be [using] the one specified by the CONNECTOR_PORT 
 variable or did I missed something?

No, Tomcat doesn't use environment variables for anything. The launch
scripts use a handful of environment variables to set up various
system properties when launching the JVM, and Tomcat uses those if
necessary.

- -chris
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Re: Multiple instances?

[Billy Bones]

Hi Markt, my wiki alias username is ArKam and my Real username is
GaelTherond, thank you very much.

@Chris: Ok, thanks a lot for your explanations, it's crystal clear to me
now, as you said, it should be something specific to systemd as it reside
under the /etc/sysconfig/tomcat file which is use to set some variables to
start the JVM.

I'm working on a RHEL 7 right now instead of the CentOS from my first mail
as I'm cooking a new PROD server, the two distro use exactly the same
configs.

2015-01-26 16:15 GMT+01:00 Christopher Schultz ch...@christopherschultz.net
:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA256

 Billy,

 On 1/26/15 8:57 AM, Billy Bones wrote:
  PS: I've found something bizarre on the systemd init process
  regarding Tomcat, if I set the CONNECTOR_PORT variable to something
  (let said 8081) on the /etc/sysconfig/tomcat-${SERVICE_NAME} it is
  not use but rather overrided by the tomcat server.xml file.

 That's not surprising, since Tomcat uses the contents of server.xml to
 configure the connectors, and does not look at any environment
 variables for anything.

 Where is CONNECTOR_PORT documented? I suspect it's something supported
 by the systemd scripts simply to differentiate between various Tomcat
 servers but doesn't have any bearing on the actual runtime
 configuration. Remember that Tomcat can bind to an arbitrary number of
 ports, so having a single CONNECTOR_PORT doesn't really make much sense.

  Until now, nothing strange, the weird part is that if I disable
  the HTTP-BIO or AJP-BIO connectors values on this file tomcat load
  the unit without binding any network port at all.

 That's expected behavior: it's possible that Tomcat is coming up with
 no Connectors configured, and that some other software component will
 then configure the connectors after the server is running. Think of an
 embedded use-case and it becomes easier to understand how this would
 not be an error.

  Shouldn't it be [using] the one specified by the CONNECTOR_PORT
  variable or did I missed something?

 No, Tomcat doesn't use environment variables for anything. The launch
 scripts use a handful of environment variables to set up various
 system properties when launching the JVM, and Tomcat uses those if
 necessary.

 - -chris
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Re: Multiple instances?

[Mark Thomas]

On 26/01/2015 13:57, Billy Bones wrote:
 Hi guys, thank for your informations regarding the Wiki, I've finally
 managed to create my account ^^ (later is better than never as we said over
 there :D) and as expected to add a new entry on the FAQ/HowTo I need to be
 whitelisted or granted to edit mode, so if a moderator could add me it
 would be nice.

And your wiki user name is ... ?

Mark


 
 PS: I've found something bizarre on the systemd init process regarding
 Tomcat, if I set the CONNECTOR_PORT variable to something (let said 8081)
 on the /etc/sysconfig/tomcat-${SERVICE_NAME} it is not use but rather
 overrided by the tomcat server.xml file.
 Until now, nothing strange, the weird part is that if I disable the
 HTTP-BIO or AJP-BIO connectors values on this file tomcat load the unit
 without binding any network port at all.
 
 Shouldn't it be suppose tu use the one specified by the CONNECTOR_PORT
 variable or did I missed something?
 
 2014-12-23 20:47 GMT+01:00 Christopher Schultz ch...@christopherschultz.net
 :
 
 Billy,
 
 On 12/19/14 1:37 PM, Billy Bones wrote:
 For sure, do I need an account or something special?
 
 You can sign-up yourself.
 
 Could you send me the wiki link?
 
 http://wiki.apache.org/tomcat/
 
 Choose login at the top of the page and then choose the you can
 create one now at the bottom of the page login page.
 
 Once you have an account, I think you'll need to be white-listed to
 actually make modifications. Just email a moderator or the whole list
 to request write access to the Wiki.
 
 -chris
 
 2014-12-19 17:05 GMT+01:00 Christopher Schultz
 ch...@christopherschultz.net
 :

 Billy,

 On 12/19/14 4:46 AM, Billy Bones wrote:
 hum OK many thanks for your hints, I got it, I understand
 what is going on now. Ok, I now have a clean and multiple
 instances running !!

 Thanks to everyone!

 @Mark Eggers: CentOS systemd units are not quite so far from
 the Fedora ones. Personally I do love the way fedora and
 CentOS are working but I have to confess that sometimes, and
 especially with tomcat everything is a pain in the ass as
 they scatter the components everywhere in the system without
 any (apparent) logics.

 WTH with all this /usr/share/blabla ??

 @Christopher: Many thanks for your advices, obviously it make
 more sens to keep the catalina_base and derivate the
 catalina_home. I love this method!!

 Once again, many thanks to everyone, I now have a clean and
 working server!

 Great. Care to post your systemd script template to the wiki? It
 will likely help others trying to do the same thing.

 -chris

 2014-12-18 19:46 GMT+01:00 Mark Eggers
 its_toas...@yahoo.com.invalid:

 On 12/18/2014 10:07 AM, Christopher Schultz wrote:
 Billy,

 On 12/18/14 9:25 AM, Billy Bones wrote:
 Ok s, here is a small update.

 I've finally found what does this SERVICE_NAME mean,
 indeed you have to copy the original unit, then add
 the Systemd's directive named Environment like this:

 Environment=SERVICE_NAME=YOUROWNSERVICENAMEHERE

 then you will copy the default tomcat config file
 found on the /etc/sysconfig directory.

 And as you supposed it Cristophe and Daniel, you then
 have to copy the whole CATALINA_{HOME/BASE} or update
 the previous config file to point out to another
 tomcat installation.

 You should not have to copy the whole CATALINA_HOME.
 Instead, create a CATALINA_BASE (which is basically
 just a few directories and a few configuration files)
 for each service and then set the CATALINA_BASE
 environment variable to point to each one for each
 service, set CATALINA_HOME to point to where the full
 installation of Tomcat is (with no web applications
 installed in it), and each service should operate
 independently.

 So you should be able to have something like this:

 SERVICE_NAME=tomcat-one
 CATALINA_HOME=/opt/apache-tomcat-7.0.57
 CATALINA_BASE=/opt/tomcat/tomcat-one

 SERVICE_NAME=tomcat-two
 CATALINA_HOME=/opt/apache-tomcat-7.0.57
 CATALINA_BASE=/opt/tomcat/tomcat-two

 Then you configure /opt/tomcat/tomcat-(one|two) to have
 the configuration and applications you want.

 You should be able to start tomcat-one and tomcat-two
 independently of each other. I don't know exactly what
 systemd does with all of this, but once you end up
 calling catalina.sh with the right environment
 variables set, Tomcat will do the right thing.

 -chris

 Fedora 21 has a relatively nice systemd script for Tomcat.
 It's designed for running multiple Tomcat instances.

 If you have a copy of Fedora 21 and yumdownloader (by
 installing yum-utils), you can take a look at the system
 with:

 mkdir Temp cd Temp yumdownloader tomcat.noarch rpm2cpio
 tomcat-7.0.54-3.fc21.noarch.rpm | cpio -idmv

 All of the files are then accessible in the Temp directory.

 I've never liked how Fedora / RedHat / CentOS scatter the
 components all over the landscape. I'm thinking of adapting
 the Fedora systemd scripts to work with Tomcats installed
 under a particular user.

 The only issue seems

Re: Multiple instances?

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

Billy,

On 12/19/14 1:37 PM, Billy Bones wrote:
 For sure, do I need an account or something special?

You can sign-up yourself.

 Could you send me the wiki link?

http://wiki.apache.org/tomcat/

Choose login at the top of the page and then choose the you can
create one now at the bottom of the page login page.

Once you have an account, I think you'll need to be white-listed to
actually make modifications. Just email a moderator or the whole list
to request write access to the Wiki.

- -chris

 2014-12-19 17:05 GMT+01:00 Christopher Schultz
 ch...@christopherschultz.net
 :
 
 Billy,
 
 On 12/19/14 4:46 AM, Billy Bones wrote:
 hum OK many thanks for your hints, I got it, I understand
 what is going on now. Ok, I now have a clean and multiple
 instances running !!
 
 Thanks to everyone!
 
 @Mark Eggers: CentOS systemd units are not quite so far from
 the Fedora ones. Personally I do love the way fedora and
 CentOS are working but I have to confess that sometimes, and
 especially with tomcat everything is a pain in the ass as
 they scatter the components everywhere in the system without
 any (apparent) logics.
 
 WTH with all this /usr/share/blabla ??
 
 @Christopher: Many thanks for your advices, obviously it make
 more sens to keep the catalina_base and derivate the
 catalina_home. I love this method!!
 
 Once again, many thanks to everyone, I now have a clean and
 working server!
 
 Great. Care to post your systemd script template to the wiki? It
 will likely help others trying to do the same thing.
 
 -chris
 
 2014-12-18 19:46 GMT+01:00 Mark Eggers 
 its_toas...@yahoo.com.invalid:
 
 On 12/18/2014 10:07 AM, Christopher Schultz wrote:
 Billy,
 
 On 12/18/14 9:25 AM, Billy Bones wrote:
 Ok s, here is a small update.
 
 I've finally found what does this SERVICE_NAME mean,
 indeed you have to copy the original unit, then add
 the Systemd's directive named Environment like this:
 
 Environment=SERVICE_NAME=YOUROWNSERVICENAMEHERE
 
 then you will copy the default tomcat config file
 found on the /etc/sysconfig directory.
 
 And as you supposed it Cristophe and Daniel, you then
 have to copy the whole CATALINA_{HOME/BASE} or update
 the previous config file to point out to another
 tomcat installation.
 
 You should not have to copy the whole CATALINA_HOME. 
 Instead, create a CATALINA_BASE (which is basically
 just a few directories and a few configuration files)
 for each service and then set the CATALINA_BASE
 environment variable to point to each one for each
 service, set CATALINA_HOME to point to where the full
 installation of Tomcat is (with no web applications
 installed in it), and each service should operate
 independently.
 
 So you should be able to have something like this:
 
 SERVICE_NAME=tomcat-one 
 CATALINA_HOME=/opt/apache-tomcat-7.0.57 
 CATALINA_BASE=/opt/tomcat/tomcat-one
 
 SERVICE_NAME=tomcat-two 
 CATALINA_HOME=/opt/apache-tomcat-7.0.57 
 CATALINA_BASE=/opt/tomcat/tomcat-two
 
 Then you configure /opt/tomcat/tomcat-(one|two) to have
 the configuration and applications you want.
 
 You should be able to start tomcat-one and tomcat-two 
 independently of each other. I don't know exactly what 
 systemd does with all of this, but once you end up
 calling catalina.sh with the right environment
 variables set, Tomcat will do the right thing.
 
 -chris
 
 Fedora 21 has a relatively nice systemd script for Tomcat.
 It's designed for running multiple Tomcat instances.
 
 If you have a copy of Fedora 21 and yumdownloader (by
 installing yum-utils), you can take a look at the system
 with:
 
 mkdir Temp cd Temp yumdownloader tomcat.noarch rpm2cpio 
 tomcat-7.0.54-3.fc21.noarch.rpm | cpio -idmv
 
 All of the files are then accessible in the Temp directory.
 
 I've never liked how Fedora / RedHat / CentOS scatter the 
 components all over the landscape. I'm thinking of adapting
 the Fedora systemd scripts to work with Tomcats installed
 under a particular user.
 
 The only issue seems to be that the SHUTDOWN_WAIT (time to
 wait in seconds before killing the process) is documented not
 to work.
 
 Sadly, I have some truly misbehaving applications that
 sometime need a kill -9 on the underlying Tomcat. Those
 misbehaving applications are unlikely to be fixed.
 
 My init scripts take care of this by issuing an orderly
 shutdown command, waiting up to SHUTDOWN_WAIT seconds
 (checking every second), then issuing a kill -9 if the
 process still exists.
 
 . . . better late than never (mostly) /mde/
 
 --- This email is free from viruses and malware because
 avast! Antivirus protection is active.
 http://www.avast.com
 
 
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Re: Multiple instances?

[Billy Bones]

hum OK many thanks for your hints, I got it, I understand what is going
on now.
Ok, I now have a clean and multiple instances running !!

Thanks to everyone!

@Mark Eggers: CentOS systemd units are not quite so far from the Fedora
ones. Personally I do love the way fedora and CentOS are working but I have
to confess that sometimes, and especially with tomcat everything is a pain
in the ass as they scatter the components everywhere in the system without
any (apparent) logics.

WTH with all this /usr/share/blabla ??

@Christopher: Many thanks for your advices, obviously it make more sens to
keep the catalina_base and derivate the catalina_home. I love this method!!

Once again, many thanks to everyone, I now have a clean and working server!

2014-12-18 19:46 GMT+01:00 Mark Eggers its_toas...@yahoo.com.invalid:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1

 On 12/18/2014 10:07 AM, Christopher Schultz wrote:
  Billy,
 
  On 12/18/14 9:25 AM, Billy Bones wrote:
  Ok s, here is a small update.
 
  I've finally found what does this SERVICE_NAME mean, indeed you
  have to copy the original unit, then add the Systemd's directive
   named Environment like this:
 
  Environment=SERVICE_NAME=YOUROWNSERVICENAMEHERE
 
  then you will copy the default tomcat config file found on the
  /etc/sysconfig directory.
 
  And as you supposed it Cristophe and Daniel, you then have to
  copy the whole CATALINA_{HOME/BASE} or update the previous config
  file to point out to another tomcat installation.
 
  You should not have to copy the whole CATALINA_HOME. Instead,
  create a CATALINA_BASE (which is basically just a few directories
  and a few configuration files) for each service and then set the
  CATALINA_BASE environment variable to point to each one for each
  service, set CATALINA_HOME to point to where the full installation
  of Tomcat is (with no web applications installed in it), and each
  service should operate independently.
 
  So you should be able to have something like this:
 
  SERVICE_NAME=tomcat-one CATALINA_HOME=/opt/apache-tomcat-7.0.57
  CATALINA_BASE=/opt/tomcat/tomcat-one
 
  SERVICE_NAME=tomcat-two CATALINA_HOME=/opt/apache-tomcat-7.0.57
  CATALINA_BASE=/opt/tomcat/tomcat-two
 
  Then you configure /opt/tomcat/tomcat-(one|two) to have the
  configuration and applications you want.
 
  You should be able to start tomcat-one and tomcat-two independently
  of each other. I don't know exactly what systemd does with all of
  this, but once you end up calling catalina.sh with the right
  environment variables set, Tomcat will do the right thing.
 
  -chris

 Fedora 21 has a relatively nice systemd script for Tomcat. It's
 designed for running multiple Tomcat instances.

 If you have a copy of Fedora 21 and yumdownloader (by installing
 yum-utils), you can take a look at the system with:

 mkdir Temp
 cd Temp
 yumdownloader tomcat.noarch
 rpm2cpio tomcat-7.0.54-3.fc21.noarch.rpm | cpio -idmv

 All of the files are then accessible in the Temp directory.

 I've never liked how Fedora / RedHat / CentOS scatter the components
 all over the landscape. I'm thinking of adapting the Fedora systemd
 scripts to work with Tomcats installed under a particular user.

 The only issue seems to be that the SHUTDOWN_WAIT (time to wait in
 seconds before killing the process) is documented not to work.

 Sadly, I have some truly misbehaving applications that sometime need a
 kill -9 on the underlying Tomcat. Those misbehaving applications are
 unlikely to be fixed.

 My init scripts take care of this by issuing an orderly shutdown
 command, waiting up to SHUTDOWN_WAIT seconds (checking every second),
 then issuing a kill -9 if the process still exists.

 . . . better late than never (mostly)
 /mde/
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Re: Multiple instances?

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

Billy,

On 12/19/14 4:46 AM, Billy Bones wrote:
 hum OK many thanks for your hints, I got it, I understand what
 is going on now. Ok, I now have a clean and multiple instances
 running !!
 
 Thanks to everyone!
 
 @Mark Eggers: CentOS systemd units are not quite so far from the
 Fedora ones. Personally I do love the way fedora and CentOS are
 working but I have to confess that sometimes, and especially with
 tomcat everything is a pain in the ass as they scatter the
 components everywhere in the system without any (apparent) logics.
 
 WTH with all this /usr/share/blabla ??
 
 @Christopher: Many thanks for your advices, obviously it make more
 sens to keep the catalina_base and derivate the catalina_home. I
 love this method!!
 
 Once again, many thanks to everyone, I now have a clean and working
 server!

Great. Care to post your systemd script template to the wiki? It will
likely help others trying to do the same thing.

- -chris

 2014-12-18 19:46 GMT+01:00 Mark Eggers
 its_toas...@yahoo.com.invalid:
 
 On 12/18/2014 10:07 AM, Christopher Schultz wrote:
 Billy,
 
 On 12/18/14 9:25 AM, Billy Bones wrote:
 Ok s, here is a small update.
 
 I've finally found what does this SERVICE_NAME mean, indeed
 you have to copy the original unit, then add the Systemd's
 directive named Environment like this:
 
 Environment=SERVICE_NAME=YOUROWNSERVICENAMEHERE
 
 then you will copy the default tomcat config file found on
 the /etc/sysconfig directory.
 
 And as you supposed it Cristophe and Daniel, you then have
 to copy the whole CATALINA_{HOME/BASE} or update the
 previous config file to point out to another tomcat
 installation.
 
 You should not have to copy the whole CATALINA_HOME.
 Instead, create a CATALINA_BASE (which is basically just a
 few directories and a few configuration files) for each
 service and then set the CATALINA_BASE environment variable
 to point to each one for each service, set CATALINA_HOME to
 point to where the full installation of Tomcat is (with no
 web applications installed in it), and each service should
 operate independently.
 
 So you should be able to have something like this:
 
 SERVICE_NAME=tomcat-one
 CATALINA_HOME=/opt/apache-tomcat-7.0.57 
 CATALINA_BASE=/opt/tomcat/tomcat-one
 
 SERVICE_NAME=tomcat-two
 CATALINA_HOME=/opt/apache-tomcat-7.0.57 
 CATALINA_BASE=/opt/tomcat/tomcat-two
 
 Then you configure /opt/tomcat/tomcat-(one|two) to have the 
 configuration and applications you want.
 
 You should be able to start tomcat-one and tomcat-two
 independently of each other. I don't know exactly what
 systemd does with all of this, but once you end up calling
 catalina.sh with the right environment variables set, Tomcat
 will do the right thing.
 
 -chris
 
 Fedora 21 has a relatively nice systemd script for Tomcat. It's 
 designed for running multiple Tomcat instances.
 
 If you have a copy of Fedora 21 and yumdownloader (by installing 
 yum-utils), you can take a look at the system with:
 
 mkdir Temp cd Temp yumdownloader tomcat.noarch rpm2cpio
 tomcat-7.0.54-3.fc21.noarch.rpm | cpio -idmv
 
 All of the files are then accessible in the Temp directory.
 
 I've never liked how Fedora / RedHat / CentOS scatter the
 components all over the landscape. I'm thinking of adapting the
 Fedora systemd scripts to work with Tomcats installed under a
 particular user.
 
 The only issue seems to be that the SHUTDOWN_WAIT (time to wait in 
 seconds before killing the process) is documented not to work.
 
 Sadly, I have some truly misbehaving applications that sometime
 need a kill -9 on the underlying Tomcat. Those misbehaving
 applications are unlikely to be fixed.
 
 My init scripts take care of this by issuing an orderly shutdown 
 command, waiting up to SHUTDOWN_WAIT seconds (checking every
 second), then issuing a kill -9 if the process still exists.
 
 . . . better late than never (mostly) /mde/
 
 --- This email is free from viruses and malware because avast!
 Antivirus protection is active. http://www.avast.com
 
 
 -

 
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
 For additional commands, e-mail: users-h...@tomcat.apache.org
 
 
 
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i6PpZLU2P0HmsC6aIZyVIJYoAi

Re: Multiple instances?

[Billy Bones]

For sure, do I need an account or something special?
Could you send me the wiki link?

2014-12-19 17:05 GMT+01:00 Christopher Schultz ch...@christopherschultz.net
:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA256

 Billy,

 On 12/19/14 4:46 AM, Billy Bones wrote:
  hum OK many thanks for your hints, I got it, I understand what
  is going on now. Ok, I now have a clean and multiple instances
  running !!
 
  Thanks to everyone!
 
  @Mark Eggers: CentOS systemd units are not quite so far from the
  Fedora ones. Personally I do love the way fedora and CentOS are
  working but I have to confess that sometimes, and especially with
  tomcat everything is a pain in the ass as they scatter the
  components everywhere in the system without any (apparent) logics.
 
  WTH with all this /usr/share/blabla ??
 
  @Christopher: Many thanks for your advices, obviously it make more
  sens to keep the catalina_base and derivate the catalina_home. I
  love this method!!
 
  Once again, many thanks to everyone, I now have a clean and working
  server!

 Great. Care to post your systemd script template to the wiki? It will
 likely help others trying to do the same thing.

 - -chris

  2014-12-18 19:46 GMT+01:00 Mark Eggers
  its_toas...@yahoo.com.invalid:
 
  On 12/18/2014 10:07 AM, Christopher Schultz wrote:
  Billy,
 
  On 12/18/14 9:25 AM, Billy Bones wrote:
  Ok s, here is a small update.
 
  I've finally found what does this SERVICE_NAME mean, indeed
  you have to copy the original unit, then add the Systemd's
  directive named Environment like this:
 
  Environment=SERVICE_NAME=YOUROWNSERVICENAMEHERE
 
  then you will copy the default tomcat config file found on
  the /etc/sysconfig directory.
 
  And as you supposed it Cristophe and Daniel, you then have
  to copy the whole CATALINA_{HOME/BASE} or update the
  previous config file to point out to another tomcat
  installation.
 
  You should not have to copy the whole CATALINA_HOME.
  Instead, create a CATALINA_BASE (which is basically just a
  few directories and a few configuration files) for each
  service and then set the CATALINA_BASE environment variable
  to point to each one for each service, set CATALINA_HOME to
  point to where the full installation of Tomcat is (with no
  web applications installed in it), and each service should
  operate independently.
 
  So you should be able to have something like this:
 
  SERVICE_NAME=tomcat-one
  CATALINA_HOME=/opt/apache-tomcat-7.0.57
  CATALINA_BASE=/opt/tomcat/tomcat-one
 
  SERVICE_NAME=tomcat-two
  CATALINA_HOME=/opt/apache-tomcat-7.0.57
  CATALINA_BASE=/opt/tomcat/tomcat-two
 
  Then you configure /opt/tomcat/tomcat-(one|two) to have the
  configuration and applications you want.
 
  You should be able to start tomcat-one and tomcat-two
  independently of each other. I don't know exactly what
  systemd does with all of this, but once you end up calling
  catalina.sh with the right environment variables set, Tomcat
  will do the right thing.
 
  -chris
 
  Fedora 21 has a relatively nice systemd script for Tomcat. It's
  designed for running multiple Tomcat instances.
 
  If you have a copy of Fedora 21 and yumdownloader (by installing
  yum-utils), you can take a look at the system with:
 
  mkdir Temp cd Temp yumdownloader tomcat.noarch rpm2cpio
  tomcat-7.0.54-3.fc21.noarch.rpm | cpio -idmv
 
  All of the files are then accessible in the Temp directory.
 
  I've never liked how Fedora / RedHat / CentOS scatter the
  components all over the landscape. I'm thinking of adapting the
  Fedora systemd scripts to work with Tomcats installed under a
  particular user.
 
  The only issue seems to be that the SHUTDOWN_WAIT (time to wait in
  seconds before killing the process) is documented not to work.
 
  Sadly, I have some truly misbehaving applications that sometime
  need a kill -9 on the underlying Tomcat. Those misbehaving
  applications are unlikely to be fixed.
 
  My init scripts take care of this by issuing an orderly shutdown
  command, waiting up to SHUTDOWN_WAIT seconds (checking every
  second), then issuing a kill -9 if the process still exists.
 
  . . . better late than never (mostly) /mde/
 
  --- This email is free from viruses and malware because avast!
  Antivirus protection is active. http://www.avast.com
 
 
  -
 
 
 To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
  For additional commands, e-mail: users-h...@tomcat.apache.org
 
 
 
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 Version: GnuPG v1
 Comment: GPGTools - http://gpgtools.org

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Re: Multiple instances?

[Billy Bones]

Ok s, here is a small update.

I've finally found what does this SERVICE_NAME mean, indeed you have to
copy the original unit, then add the Systemd's directive
 named Environment like this:

Environment=SERVICE_NAME=YOUROWNSERVICENAMEHERE

then you will copy the default tomcat config file found on the
/etc/sysconfig directory.

And as you supposed it Cristophe and Daniel, you then have to copy the
whole CATALINA_{HOME/BASE} or update the previous config file to point out
to another tomcat installation.

I hope it would help someone ;-)

2014-12-11 17:58 GMT+01:00 Billy Bones gael.ther...@gmail.com:

 No problems, I'll keep you updated ;-)

 Thanks for your answers.

 2014-12-11 15:24 GMT+01:00 Daniel Mikusa dmik...@pivotal.io:

 On Thu, Dec 11, 2014 at 3:45 AM, Billy Bones gael.ther...@gmail.com
 wrote:

  Ok, then I'll completly wright another systemd unit derivated from the
 one
  provided by CentOS.
 
  Yup, that what I thought about the CATALINA_HOME and BASE, so as you
  suggested, I'll test to run individual units and saw how it's going on.
 
  Many thanks guys.
 

 When you get something working, please share your solution :)

 I'm interested to see what you work out and I'm sure others will be as
 well.

 Dan



 
  2014-12-10 18:10 GMT+01:00 Daniel Mikusa dmik...@pivotal.io:
 
   On Wed, Dec 10, 2014 at 10:35 AM, Billy Bones gael.ther...@gmail.com
 
   wrote:
  
Hi Christopher,
   
Many thanks for your answer, well, I'm pretty comfortable with
 systemd
myself as I rely on it for my Fedora box for a long time ago, but on
  this
particular topic regarding tomcat, I don't really understand the
  purpose
   of
this special sentence.
As you pointed it, for me too usually caps names == env variables
 but
  as
   on
the tomcat-sysd script it's simply called without futher sources I'm
  not
quite sure for now.
   
Well, lets see if another *NIX Admin already had started
  multi-instances
tomcat on systemd distributions :D
   
  
   Starting different instances of Tomcat is mostly just a matter of
 setting
   the CATALINA_HOME and CATALINA_BASE environment variables to the right
   locations.  I'm sure systemd has a way for you to set environment
   variables, so that should be sufficient to start different instances.
  
   For more details on CATALINA_HOME and CATALINA_BASE, check out the
   RUNNING.txt file in your download or look here.
  
  
  
 
 http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/RUNNING.txt?view=markup
  
   I'd suggest getting everything working with multiple instance first.
  Once
   you can start the instances from the command line then worry about
  starting
   them with systemd.
  
  
   
Another way would be to completly duplicate the tomcat directory and
service unit and start both at runtime but... doesn't seems too
 shiny
   for a
new server :D
   
  
   Also an option, but not as efficient.
  
   Dan
  
  
   
2014-12-10 16:27 GMT+01:00 Christopher Schultz 
ch...@christopherschultz.net
:
   
 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA256

 Billy,

 On 12/10/14 9:57 AM, Billy Bones wrote:
  Hi guys,
 
  I'm currently preparing a migration of our Operating System
 which
  handle our current tomcat installation from an OLD Linux using
 init
  scripts to a CentOS7 release using sytemd.

 Hrm. Good luck getting help with systemd. The ASF doesn't even
  support
 init.d scripts, though I'm sure many *NIX admins here can help
 with
 init.d scripts (including myself). systemd is a bit new, to ...
 we'll
see.

  Because I don't want to disturb the way the old server handle
 the
  webapps (not yet :-) ), I have to start 2 separated instances of
  tomcat on the new machine.
 
  Using init script to boot multiples instance is quite easy, but
  know I'll use systemd and I have to adapt.
 
  I installed my OS and Tomcat from the CentOS repos, take a look
 at
  the tomcat.service unit and tomcat-sysd script to see how the
  things work. But now I'm a little bit disappointed, I don't
  understand how to have multiple instances.
 
  I created a tomcat@jcr.service unit file on my systemd
 directory
  and read about the steps to achieve.
 
  The first step said that *by default SERVICE_NAME=tomcat. and
 must
  be defined BEFORE tomcat-sysd is called*
 
  Well, OK, but how am I suppose to do that? Using environnement
  variables? PreStartExec directive? Environnement directive?

 I have no idea. Generally, whenever I see something in ALL_CAPS
 that
 needs to be set to a value, it's an environment variable. With
 systemd, it could mean just about anything.

  I really don't get it, even looking at the tomcat-sysd wrapper
  script which indicate me HOW the system run multiple instance
 don't
  help me to understand WHERE am I suppose to put

Re: Multiple instances?

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

Billy,

On 12/18/14 9:25 AM, Billy Bones wrote:
 Ok s, here is a small update.
 
 I've finally found what does this SERVICE_NAME mean, indeed you
 have to copy the original unit, then add the Systemd's directive 
 named Environment like this:
 
 Environment=SERVICE_NAME=YOUROWNSERVICENAMEHERE
 
 then you will copy the default tomcat config file found on the 
 /etc/sysconfig directory.
 
 And as you supposed it Cristophe and Daniel, you then have to copy
 the whole CATALINA_{HOME/BASE} or update the previous config file
 to point out to another tomcat installation.

You should not have to copy the whole CATALINA_HOME. Instead, create a
CATALINA_BASE (which is basically just a few directories and a few
configuration files) for each service and then set the CATALINA_BASE
environment variable to point to each one for each service, set
CATALINA_HOME to point to where the full installation of Tomcat is
(with no web applications installed in it), and each service should
operate independently.

So you should be able to have something like this:

SERVICE_NAME=tomcat-one
CATALINA_HOME=/opt/apache-tomcat-7.0.57
CATALINA_BASE=/opt/tomcat/tomcat-one

SERVICE_NAME=tomcat-two
CATALINA_HOME=/opt/apache-tomcat-7.0.57
CATALINA_BASE=/opt/tomcat/tomcat-two

Then you configure /opt/tomcat/tomcat-(one|two) to have the
configuration and applications you want.

You should be able to start tomcat-one and tomcat-two independently of
each other. I don't know exactly what systemd does with all of this,
but once you end up calling catalina.sh with the right environment
variables set, Tomcat will do the right thing.

- -chris
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Re: Multiple instances?

[Mark Eggers]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

On 12/18/2014 10:07 AM, Christopher Schultz wrote:
 Billy,
 
 On 12/18/14 9:25 AM, Billy Bones wrote:
 Ok s, here is a small update.
 
 I've finally found what does this SERVICE_NAME mean, indeed you 
 have to copy the original unit, then add the Systemd's directive
  named Environment like this:
 
 Environment=SERVICE_NAME=YOUROWNSERVICENAMEHERE
 
 then you will copy the default tomcat config file found on the 
 /etc/sysconfig directory.
 
 And as you supposed it Cristophe and Daniel, you then have to
 copy the whole CATALINA_{HOME/BASE} or update the previous config
 file to point out to another tomcat installation.
 
 You should not have to copy the whole CATALINA_HOME. Instead,
 create a CATALINA_BASE (which is basically just a few directories
 and a few configuration files) for each service and then set the
 CATALINA_BASE environment variable to point to each one for each
 service, set CATALINA_HOME to point to where the full installation
 of Tomcat is (with no web applications installed in it), and each
 service should operate independently.
 
 So you should be able to have something like this:
 
 SERVICE_NAME=tomcat-one CATALINA_HOME=/opt/apache-tomcat-7.0.57 
 CATALINA_BASE=/opt/tomcat/tomcat-one
 
 SERVICE_NAME=tomcat-two CATALINA_HOME=/opt/apache-tomcat-7.0.57 
 CATALINA_BASE=/opt/tomcat/tomcat-two
 
 Then you configure /opt/tomcat/tomcat-(one|two) to have the 
 configuration and applications you want.
 
 You should be able to start tomcat-one and tomcat-two independently
 of each other. I don't know exactly what systemd does with all of
 this, but once you end up calling catalina.sh with the right
 environment variables set, Tomcat will do the right thing.
 
 -chris

Fedora 21 has a relatively nice systemd script for Tomcat. It's
designed for running multiple Tomcat instances.

If you have a copy of Fedora 21 and yumdownloader (by installing
yum-utils), you can take a look at the system with:

mkdir Temp
cd Temp
yumdownloader tomcat.noarch
rpm2cpio tomcat-7.0.54-3.fc21.noarch.rpm | cpio -idmv

All of the files are then accessible in the Temp directory.

I've never liked how Fedora / RedHat / CentOS scatter the components
all over the landscape. I'm thinking of adapting the Fedora systemd
scripts to work with Tomcats installed under a particular user.

The only issue seems to be that the SHUTDOWN_WAIT (time to wait in
seconds before killing the process) is documented not to work.

Sadly, I have some truly misbehaving applications that sometime need a
kill -9 on the underlying Tomcat. Those misbehaving applications are
unlikely to be fixed.

My init scripts take care of this by issuing an orderly shutdown
command, waiting up to SHUTDOWN_WAIT seconds (checking every second),
then issuing a kill -9 if the process still exists.

. . . better late than never (mostly)
/mde/
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Re: Multiple instances?

[Billy Bones]

Ok, then I'll completly wright another systemd unit derivated from the one
provided by CentOS.

Yup, that what I thought about the CATALINA_HOME and BASE, so as you
suggested, I'll test to run individual units and saw how it's going on.

Many thanks guys.

2014-12-10 18:10 GMT+01:00 Daniel Mikusa dmik...@pivotal.io:

 On Wed, Dec 10, 2014 at 10:35 AM, Billy Bones gael.ther...@gmail.com
 wrote:

  Hi Christopher,
 
  Many thanks for your answer, well, I'm pretty comfortable with systemd
  myself as I rely on it for my Fedora box for a long time ago, but on this
  particular topic regarding tomcat, I don't really understand the purpose
 of
  this special sentence.
  As you pointed it, for me too usually caps names == env variables but as
 on
  the tomcat-sysd script it's simply called without futher sources I'm not
  quite sure for now.
 
  Well, lets see if another *NIX Admin already had started multi-instances
  tomcat on systemd distributions :D
 

 Starting different instances of Tomcat is mostly just a matter of setting
 the CATALINA_HOME and CATALINA_BASE environment variables to the right
 locations.  I'm sure systemd has a way for you to set environment
 variables, so that should be sufficient to start different instances.

 For more details on CATALINA_HOME and CATALINA_BASE, check out the
 RUNNING.txt file in your download or look here.


 http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/RUNNING.txt?view=markup

 I'd suggest getting everything working with multiple instance first.  Once
 you can start the instances from the command line then worry about starting
 them with systemd.


 
  Another way would be to completly duplicate the tomcat directory and
  service unit and start both at runtime but... doesn't seems too shiny
 for a
  new server :D
 

 Also an option, but not as efficient.

 Dan


 
  2014-12-10 16:27 GMT+01:00 Christopher Schultz 
  ch...@christopherschultz.net
  :
 
   -BEGIN PGP SIGNED MESSAGE-
   Hash: SHA256
  
   Billy,
  
   On 12/10/14 9:57 AM, Billy Bones wrote:
Hi guys,
   
I'm currently preparing a migration of our Operating System which
handle our current tomcat installation from an OLD Linux using init
scripts to a CentOS7 release using sytemd.
  
   Hrm. Good luck getting help with systemd. The ASF doesn't even support
   init.d scripts, though I'm sure many *NIX admins here can help with
   init.d scripts (including myself). systemd is a bit new, to ... we'll
  see.
  
Because I don't want to disturb the way the old server handle the
webapps (not yet :-) ), I have to start 2 separated instances of
tomcat on the new machine.
   
Using init script to boot multiples instance is quite easy, but
know I'll use systemd and I have to adapt.
   
I installed my OS and Tomcat from the CentOS repos, take a look at
the tomcat.service unit and tomcat-sysd script to see how the
things work. But now I'm a little bit disappointed, I don't
understand how to have multiple instances.
   
I created a tomcat@jcr.service unit file on my systemd directory
and read about the steps to achieve.
   
The first step said that *by default SERVICE_NAME=tomcat. and must
be defined BEFORE tomcat-sysd is called*
   
Well, OK, but how am I suppose to do that? Using environnement
variables? PreStartExec directive? Environnement directive?
  
   I have no idea. Generally, whenever I see something in ALL_CAPS that
   needs to be set to a value, it's an environment variable. With
   systemd, it could mean just about anything.
  
I really don't get it, even looking at the tomcat-sysd wrapper
script which indicate me HOW the system run multiple instance don't
help me to understand WHERE am I suppose to put that information.
   
I understand that I have to create a new unit file, a new
/etc/sysconfig/tomcat file named according to the systemd unit, but
I don't get it about the SERVICE_NAME.
   
So if someone could help me a little bit, I'll be happy ^^
  
   Ultimately, it will all boil down to CATALINA_BASE and CATALINA_HOME
   as far as Tomcat is concerned. The SERVICE_NAME is probably a
   systemd-only thing.
  
   Good luck,
   - -chris
   -BEGIN PGP SIGNATURE-
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   Comment: GPGTools - http://gpgtools.org
  
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Re: Multiple instances?

[Daniel Mikusa]

On Thu, Dec 11, 2014 at 3:45 AM, Billy Bones gael.ther...@gmail.com wrote:

 Ok, then I'll completly wright another systemd unit derivated from the one
 provided by CentOS.

 Yup, that what I thought about the CATALINA_HOME and BASE, so as you
 suggested, I'll test to run individual units and saw how it's going on.

 Many thanks guys.


When you get something working, please share your solution :)

I'm interested to see what you work out and I'm sure others will be as well.

Dan




 2014-12-10 18:10 GMT+01:00 Daniel Mikusa dmik...@pivotal.io:

  On Wed, Dec 10, 2014 at 10:35 AM, Billy Bones gael.ther...@gmail.com
  wrote:
 
   Hi Christopher,
  
   Many thanks for your answer, well, I'm pretty comfortable with systemd
   myself as I rely on it for my Fedora box for a long time ago, but on
 this
   particular topic regarding tomcat, I don't really understand the
 purpose
  of
   this special sentence.
   As you pointed it, for me too usually caps names == env variables but
 as
  on
   the tomcat-sysd script it's simply called without futher sources I'm
 not
   quite sure for now.
  
   Well, lets see if another *NIX Admin already had started
 multi-instances
   tomcat on systemd distributions :D
  
 
  Starting different instances of Tomcat is mostly just a matter of setting
  the CATALINA_HOME and CATALINA_BASE environment variables to the right
  locations.  I'm sure systemd has a way for you to set environment
  variables, so that should be sufficient to start different instances.
 
  For more details on CATALINA_HOME and CATALINA_BASE, check out the
  RUNNING.txt file in your download or look here.
 
 
 
 http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/RUNNING.txt?view=markup
 
  I'd suggest getting everything working with multiple instance first.
 Once
  you can start the instances from the command line then worry about
 starting
  them with systemd.
 
 
  
   Another way would be to completly duplicate the tomcat directory and
   service unit and start both at runtime but... doesn't seems too shiny
  for a
   new server :D
  
 
  Also an option, but not as efficient.
 
  Dan
 
 
  
   2014-12-10 16:27 GMT+01:00 Christopher Schultz 
   ch...@christopherschultz.net
   :
  
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256
   
Billy,
   
On 12/10/14 9:57 AM, Billy Bones wrote:
 Hi guys,

 I'm currently preparing a migration of our Operating System which
 handle our current tomcat installation from an OLD Linux using init
 scripts to a CentOS7 release using sytemd.
   
Hrm. Good luck getting help with systemd. The ASF doesn't even
 support
init.d scripts, though I'm sure many *NIX admins here can help with
init.d scripts (including myself). systemd is a bit new, to ... we'll
   see.
   
 Because I don't want to disturb the way the old server handle the
 webapps (not yet :-) ), I have to start 2 separated instances of
 tomcat on the new machine.

 Using init script to boot multiples instance is quite easy, but
 know I'll use systemd and I have to adapt.

 I installed my OS and Tomcat from the CentOS repos, take a look at
 the tomcat.service unit and tomcat-sysd script to see how the
 things work. But now I'm a little bit disappointed, I don't
 understand how to have multiple instances.

 I created a tomcat@jcr.service unit file on my systemd directory
 and read about the steps to achieve.

 The first step said that *by default SERVICE_NAME=tomcat. and must
 be defined BEFORE tomcat-sysd is called*

 Well, OK, but how am I suppose to do that? Using environnement
 variables? PreStartExec directive? Environnement directive?
   
I have no idea. Generally, whenever I see something in ALL_CAPS that
needs to be set to a value, it's an environment variable. With
systemd, it could mean just about anything.
   
 I really don't get it, even looking at the tomcat-sysd wrapper
 script which indicate me HOW the system run multiple instance don't
 help me to understand WHERE am I suppose to put that information.

 I understand that I have to create a new unit file, a new
 /etc/sysconfig/tomcat file named according to the systemd unit, but
 I don't get it about the SERVICE_NAME.

 So if someone could help me a little bit, I'll be happy ^^
   
Ultimately, it will all boil down to CATALINA_BASE and CATALINA_HOME
as far as Tomcat is concerned. The SERVICE_NAME is probably a
systemd-only thing.
   
Good luck,
- -chris
-BEGIN PGP SIGNATURE-
Version: GnuPG v1
Comment: GPGTools - http://gpgtools.org
   
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Re: Multiple instances?

[Billy Bones]

No problems, I'll keep you updated ;-)

Thanks for your answers.

2014-12-11 15:24 GMT+01:00 Daniel Mikusa dmik...@pivotal.io:

 On Thu, Dec 11, 2014 at 3:45 AM, Billy Bones gael.ther...@gmail.com
 wrote:

  Ok, then I'll completly wright another systemd unit derivated from the
 one
  provided by CentOS.
 
  Yup, that what I thought about the CATALINA_HOME and BASE, so as you
  suggested, I'll test to run individual units and saw how it's going on.
 
  Many thanks guys.
 

 When you get something working, please share your solution :)

 I'm interested to see what you work out and I'm sure others will be as
 well.

 Dan



 
  2014-12-10 18:10 GMT+01:00 Daniel Mikusa dmik...@pivotal.io:
 
   On Wed, Dec 10, 2014 at 10:35 AM, Billy Bones gael.ther...@gmail.com
   wrote:
  
Hi Christopher,
   
Many thanks for your answer, well, I'm pretty comfortable with
 systemd
myself as I rely on it for my Fedora box for a long time ago, but on
  this
particular topic regarding tomcat, I don't really understand the
  purpose
   of
this special sentence.
As you pointed it, for me too usually caps names == env variables but
  as
   on
the tomcat-sysd script it's simply called without futher sources I'm
  not
quite sure for now.
   
Well, lets see if another *NIX Admin already had started
  multi-instances
tomcat on systemd distributions :D
   
  
   Starting different instances of Tomcat is mostly just a matter of
 setting
   the CATALINA_HOME and CATALINA_BASE environment variables to the right
   locations.  I'm sure systemd has a way for you to set environment
   variables, so that should be sufficient to start different instances.
  
   For more details on CATALINA_HOME and CATALINA_BASE, check out the
   RUNNING.txt file in your download or look here.
  
  
  
 
 http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/RUNNING.txt?view=markup
  
   I'd suggest getting everything working with multiple instance first.
  Once
   you can start the instances from the command line then worry about
  starting
   them with systemd.
  
  
   
Another way would be to completly duplicate the tomcat directory and
service unit and start both at runtime but... doesn't seems too shiny
   for a
new server :D
   
  
   Also an option, but not as efficient.
  
   Dan
  
  
   
2014-12-10 16:27 GMT+01:00 Christopher Schultz 
ch...@christopherschultz.net
:
   
 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA256

 Billy,

 On 12/10/14 9:57 AM, Billy Bones wrote:
  Hi guys,
 
  I'm currently preparing a migration of our Operating System which
  handle our current tomcat installation from an OLD Linux using
 init
  scripts to a CentOS7 release using sytemd.

 Hrm. Good luck getting help with systemd. The ASF doesn't even
  support
 init.d scripts, though I'm sure many *NIX admins here can help with
 init.d scripts (including myself). systemd is a bit new, to ...
 we'll
see.

  Because I don't want to disturb the way the old server handle the
  webapps (not yet :-) ), I have to start 2 separated instances of
  tomcat on the new machine.
 
  Using init script to boot multiples instance is quite easy, but
  know I'll use systemd and I have to adapt.
 
  I installed my OS and Tomcat from the CentOS repos, take a look
 at
  the tomcat.service unit and tomcat-sysd script to see how the
  things work. But now I'm a little bit disappointed, I don't
  understand how to have multiple instances.
 
  I created a tomcat@jcr.service unit file on my systemd directory
  and read about the steps to achieve.
 
  The first step said that *by default SERVICE_NAME=tomcat. and
 must
  be defined BEFORE tomcat-sysd is called*
 
  Well, OK, but how am I suppose to do that? Using environnement
  variables? PreStartExec directive? Environnement directive?

 I have no idea. Generally, whenever I see something in ALL_CAPS
 that
 needs to be set to a value, it's an environment variable. With
 systemd, it could mean just about anything.

  I really don't get it, even looking at the tomcat-sysd wrapper
  script which indicate me HOW the system run multiple instance
 don't
  help me to understand WHERE am I suppose to put that information.
 
  I understand that I have to create a new unit file, a new
  /etc/sysconfig/tomcat file named according to the systemd unit,
 but
  I don't get it about the SERVICE_NAME.
 
  So if someone could help me a little bit, I'll be happy ^^

 Ultimately, it will all boil down to CATALINA_BASE and
 CATALINA_HOME
 as far as Tomcat is concerned. The SERVICE_NAME is probably a
 systemd-only thing.

 Good luck,
 - -chris
 -BEGIN PGP SIGNATURE-
 Version: GnuPG v1
 Comment: GPGTools - http://gpgtools.org

 iQIcBAEBCAAGBQJUiGZWAAoJEBzwKT

Multiple instances?

[Billy Bones]

Hi guys,

I'm currently preparing a migration of our Operating System which handle
our current tomcat installation from an OLD Linux using init scripts to a
CentOS7 release using sytemd.

Because I don't want to disturb the way the old server handle the webapps
(not yet :-) ), I have to start 2 separated instances of tomcat on the new
machine.

Using init script to boot multiples instance is quite easy, but know I'll
use systemd and I have to adapt.

I installed my OS and Tomcat from the CentOS repos, take a look at the
tomcat.service unit and tomcat-sysd script to see how the things work.
But now I'm a little bit disappointed, I don't understand how to have
multiple instances.

I created a tomcat@jcr.service unit file on my systemd directory and read
about the steps to achieve.

The first step said that *by default SERVICE_NAME=tomcat. and must be
defined BEFORE tomcat-sysd is called*

Well, OK, but how am I suppose to do that? Using environnement variables?
PreStartExec directive? Environnement directive?

I really don't get it, even looking at the tomcat-sysd wrapper script which
indicate me HOW the system run multiple instance don't help me to
understand WHERE am I suppose to put that information.

I understand that I have to create a new unit file, a new
/etc/sysconfig/tomcat file named according to the systemd unit, but I don't
get it about the SERVICE_NAME.

So if someone could help me a little bit, I'll be happy ^^

Re: Multiple instances?

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

Billy,

On 12/10/14 9:57 AM, Billy Bones wrote:
 Hi guys,
 
 I'm currently preparing a migration of our Operating System which
 handle our current tomcat installation from an OLD Linux using init
 scripts to a CentOS7 release using sytemd.

Hrm. Good luck getting help with systemd. The ASF doesn't even support
init.d scripts, though I'm sure many *NIX admins here can help with
init.d scripts (including myself). systemd is a bit new, to ... we'll see.

 Because I don't want to disturb the way the old server handle the
 webapps (not yet :-) ), I have to start 2 separated instances of
 tomcat on the new machine.
 
 Using init script to boot multiples instance is quite easy, but
 know I'll use systemd and I have to adapt.
 
 I installed my OS and Tomcat from the CentOS repos, take a look at
 the tomcat.service unit and tomcat-sysd script to see how the
 things work. But now I'm a little bit disappointed, I don't
 understand how to have multiple instances.
 
 I created a tomcat@jcr.service unit file on my systemd directory
 and read about the steps to achieve.
 
 The first step said that *by default SERVICE_NAME=tomcat. and must
 be defined BEFORE tomcat-sysd is called*
 
 Well, OK, but how am I suppose to do that? Using environnement
 variables? PreStartExec directive? Environnement directive?

I have no idea. Generally, whenever I see something in ALL_CAPS that
needs to be set to a value, it's an environment variable. With
systemd, it could mean just about anything.

 I really don't get it, even looking at the tomcat-sysd wrapper
 script which indicate me HOW the system run multiple instance don't
 help me to understand WHERE am I suppose to put that information.
 
 I understand that I have to create a new unit file, a new 
 /etc/sysconfig/tomcat file named according to the systemd unit, but
 I don't get it about the SERVICE_NAME.
 
 So if someone could help me a little bit, I'll be happy ^^

Ultimately, it will all boil down to CATALINA_BASE and CATALINA_HOME
as far as Tomcat is concerned. The SERVICE_NAME is probably a
systemd-only thing.

Good luck,
- -chris
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To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
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Re: Multiple instances?

[Billy Bones]

Hi Christopher,

Many thanks for your answer, well, I'm pretty comfortable with systemd
myself as I rely on it for my Fedora box for a long time ago, but on this
particular topic regarding tomcat, I don't really understand the purpose of
this special sentence.
As you pointed it, for me too usually caps names == env variables but as on
the tomcat-sysd script it's simply called without futher sources I'm not
quite sure for now.

Well, lets see if another *NIX Admin already had started multi-instances
tomcat on systemd distributions :D

Another way would be to completly duplicate the tomcat directory and
service unit and start both at runtime but... doesn't seems too shiny for a
new server :D

2014-12-10 16:27 GMT+01:00 Christopher Schultz ch...@christopherschultz.net
:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA256

 Billy,

 On 12/10/14 9:57 AM, Billy Bones wrote:
  Hi guys,
 
  I'm currently preparing a migration of our Operating System which
  handle our current tomcat installation from an OLD Linux using init
  scripts to a CentOS7 release using sytemd.

 Hrm. Good luck getting help with systemd. The ASF doesn't even support
 init.d scripts, though I'm sure many *NIX admins here can help with
 init.d scripts (including myself). systemd is a bit new, to ... we'll see.

  Because I don't want to disturb the way the old server handle the
  webapps (not yet :-) ), I have to start 2 separated instances of
  tomcat on the new machine.
 
  Using init script to boot multiples instance is quite easy, but
  know I'll use systemd and I have to adapt.
 
  I installed my OS and Tomcat from the CentOS repos, take a look at
  the tomcat.service unit and tomcat-sysd script to see how the
  things work. But now I'm a little bit disappointed, I don't
  understand how to have multiple instances.
 
  I created a tomcat@jcr.service unit file on my systemd directory
  and read about the steps to achieve.
 
  The first step said that *by default SERVICE_NAME=tomcat. and must
  be defined BEFORE tomcat-sysd is called*
 
  Well, OK, but how am I suppose to do that? Using environnement
  variables? PreStartExec directive? Environnement directive?

 I have no idea. Generally, whenever I see something in ALL_CAPS that
 needs to be set to a value, it's an environment variable. With
 systemd, it could mean just about anything.

  I really don't get it, even looking at the tomcat-sysd wrapper
  script which indicate me HOW the system run multiple instance don't
  help me to understand WHERE am I suppose to put that information.
 
  I understand that I have to create a new unit file, a new
  /etc/sysconfig/tomcat file named according to the systemd unit, but
  I don't get it about the SERVICE_NAME.
 
  So if someone could help me a little bit, I'll be happy ^^

 Ultimately, it will all boil down to CATALINA_BASE and CATALINA_HOME
 as far as Tomcat is concerned. The SERVICE_NAME is probably a
 systemd-only thing.

 Good luck,
 - -chris
 -BEGIN PGP SIGNATURE-
 Version: GnuPG v1
 Comment: GPGTools - http://gpgtools.org

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Re: Multiple instances?

[Daniel Mikusa]

On Wed, Dec 10, 2014 at 10:35 AM, Billy Bones gael.ther...@gmail.com
wrote:

 Hi Christopher,

 Many thanks for your answer, well, I'm pretty comfortable with systemd
 myself as I rely on it for my Fedora box for a long time ago, but on this
 particular topic regarding tomcat, I don't really understand the purpose of
 this special sentence.
 As you pointed it, for me too usually caps names == env variables but as on
 the tomcat-sysd script it's simply called without futher sources I'm not
 quite sure for now.

 Well, lets see if another *NIX Admin already had started multi-instances
 tomcat on systemd distributions :D


Starting different instances of Tomcat is mostly just a matter of setting
the CATALINA_HOME and CATALINA_BASE environment variables to the right
locations.  I'm sure systemd has a way for you to set environment
variables, so that should be sufficient to start different instances.

For more details on CATALINA_HOME and CATALINA_BASE, check out the
RUNNING.txt file in your download or look here.

  http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/RUNNING.txt?view=markup

I'd suggest getting everything working with multiple instance first.  Once
you can start the instances from the command line then worry about starting
them with systemd.



 Another way would be to completly duplicate the tomcat directory and
 service unit and start both at runtime but... doesn't seems too shiny for a
 new server :D


Also an option, but not as efficient.

Dan



 2014-12-10 16:27 GMT+01:00 Christopher Schultz 
 ch...@christopherschultz.net
 :

  -BEGIN PGP SIGNED MESSAGE-
  Hash: SHA256
 
  Billy,
 
  On 12/10/14 9:57 AM, Billy Bones wrote:
   Hi guys,
  
   I'm currently preparing a migration of our Operating System which
   handle our current tomcat installation from an OLD Linux using init
   scripts to a CentOS7 release using sytemd.
 
  Hrm. Good luck getting help with systemd. The ASF doesn't even support
  init.d scripts, though I'm sure many *NIX admins here can help with
  init.d scripts (including myself). systemd is a bit new, to ... we'll
 see.
 
   Because I don't want to disturb the way the old server handle the
   webapps (not yet :-) ), I have to start 2 separated instances of
   tomcat on the new machine.
  
   Using init script to boot multiples instance is quite easy, but
   know I'll use systemd and I have to adapt.
  
   I installed my OS and Tomcat from the CentOS repos, take a look at
   the tomcat.service unit and tomcat-sysd script to see how the
   things work. But now I'm a little bit disappointed, I don't
   understand how to have multiple instances.
  
   I created a tomcat@jcr.service unit file on my systemd directory
   and read about the steps to achieve.
  
   The first step said that *by default SERVICE_NAME=tomcat. and must
   be defined BEFORE tomcat-sysd is called*
  
   Well, OK, but how am I suppose to do that? Using environnement
   variables? PreStartExec directive? Environnement directive?
 
  I have no idea. Generally, whenever I see something in ALL_CAPS that
  needs to be set to a value, it's an environment variable. With
  systemd, it could mean just about anything.
 
   I really don't get it, even looking at the tomcat-sysd wrapper
   script which indicate me HOW the system run multiple instance don't
   help me to understand WHERE am I suppose to put that information.
  
   I understand that I have to create a new unit file, a new
   /etc/sysconfig/tomcat file named according to the systemd unit, but
   I don't get it about the SERVICE_NAME.
  
   So if someone could help me a little bit, I'll be happy ^^
 
  Ultimately, it will all boil down to CATALINA_BASE and CATALINA_HOME
  as far as Tomcat is concerned. The SERVICE_NAME is probably a
  systemd-only thing.
 
  Good luck,
  - -chris
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Re: Scripting Tomcat installation versus multiple instances

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

André,

On 3/26/14, 3:35 PM, André Warnier wrote:
 Despite your name, you are too quick (and not lazy enough). You
 could have waited an hour, to get that solution right here. ;-)

Please don't top-post.

- -chris

(Sorry... just had to do that)
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Version: GnuPG v1
Comment: GPGTools - http://gpgtools.org
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/

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Re: Scripting Tomcat installation versus multiple instances

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

David,

On 3/26/14, 3:35 PM, David kerber wrote:
 On 3/26/2014 3:25 PM, André Warnier wrote:
 Leo Donahue wrote:
 On Wed, Mar 26, 2014 at 11:32 AM, Sebastien Tardif  
 sebastien.tardif.contrac...@gmo.com wrote:
 
 I'm confused by the commands given by Tomcat documentation
 about creating different instances, it says: service install
 instance1 but service is not a command provided by Tomcat
 or Windows, see 
 http://tomcat.apache.org/tomcat-7.0-doc/windows-service-howto.html#Multiple_Instances




 
Almost everything I'm trying to automate using that page is not
 working, maybe it's rare people automate installation on
 Windows?
 
 
 The service command is located here:
 \apache-tomcat-7.0.52\bin
 
 change directories to this location and run that command.
 
 
 Maybe also the OP did not download the correct package to have
 that command. For some reason which is still mysterious to me,
 the Service Installer package does not contain all the files
 which the ZIP package contains. And bin/service.bat is probably
 among the ones missing.
 
 Yes, it is.  When I am setting up a new install, I do the windows 
 install and then unzip the .zip package on top of it, so I have all
 the .bat files as well.  I don't fully automate my installations,
 but I do some scripting to make it easier to be consistent with my
 naming and configuration.

https://issues.apache.org/bugzilla/show_bug.cgi?id=56323

Vote for it.

- -chris
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Version: GnuPG v1
Comment: GPGTools - http://gpgtools.org
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Re: {OT] Scripting Tomcat installation versus multiple instances

[André Warnier]

Christopher Schultz wrote:

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

André,

On 3/26/14, 3:35 PM, André Warnier wrote:

Despite your name, you are too quick (and not lazy enough). You
could have waited an hour, to get that solution right here. ;-)


Please don't top-post.

- -chris

(Sorry... just had to do that)


Well, you top-post all the time !
(see above)


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Re: {OT] Scripting Tomcat installation versus multiple instances

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

André,

On 3/27/14, 12:13 PM, André Warnier wrote:
 Christopher Schultz wrote:
 -BEGIN PGP SIGNED MESSAGE- Hash: SHA256
 
 André,
 
 On 3/26/14, 3:35 PM, André Warnier wrote:
 Despite your name, you are too quick (and not lazy enough).
 You could have waited an hour, to get that solution right here.
 ;-)
 
 Please don't top-post.
 
 - -chris
 
 (Sorry... just had to do that)
 
 Well, you top-post all the time ! (see above)

Do I?

- -chris
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Re: Scripting Tomcat installation versus multiple instances

[David kerber]

On 3/27/2014 12:11 PM, Christopher Schultz wrote:

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

David,



...



Yes, it is.  When I am setting up a new install, I do the windows
install and then unzip the .zip package on top of it, so I have all
the .bat files as well.  I don't fully automate my installations,
but I do some scripting to make it easier to be consistent with my
naming and configuration.


https://issues.apache.org/bugzilla/show_bug.cgi?id=56323

Vote for it.


done


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Scripting Tomcat installation versus multiple instances

[Sebastien Tardif]

I'm confused by the commands given by Tomcat documentation about creating 
different instances, it says: service install instance1 but service is not 
a command provided by Tomcat or Windows, see 
http://tomcat.apache.org/tomcat-7.0-doc/windows-service-howto.html#Multiple_Instances

Almost everything I'm trying to automate using that page is not working, maybe 
it's rare people automate installation on Windows?

Re: Scripting Tomcat installation versus multiple instances

[Leo Donahue]

On Wed, Mar 26, 2014 at 11:32 AM, Sebastien Tardif 
sebastien.tardif.contrac...@gmo.com wrote:

 I'm confused by the commands given by Tomcat documentation about creating
 different instances, it says: service install instance1 but service is
 not a command provided by Tomcat or Windows, see
 http://tomcat.apache.org/tomcat-7.0-doc/windows-service-howto.html#Multiple_Instances

 Almost everything I'm trying to automate using that page is not working,
 maybe it's rare people automate installation on Windows?


The service command is located here:  \apache-tomcat-7.0.52\bin

change directories to this location and run that command.

RE: Scripting Tomcat installation versus multiple instances

[Sebastien Tardif]

Ok, I got it.

When I installed Tomcat on Windows, I used the Windows Service Installer, the 
executable, not the zip.

It seems the installation will rename the executables to whatever name you give 
to your instance, but that executable can be used like service.bat for that 
command. The executables are renamed so that when you execute them they default 
to match the Windows service with the same name.

Also, the same Tomcat documentation mentions a batch file called service.bat, 
that file doesn't exist in the executable installer but does exists in the zip 
file for Windows.

To debug installation of Tomcat's services, it's useful to know that the 
registry location that persist all the settings is under: 
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Apache Software Foundation\Procrun 2.0

-Original Message-
From: Leo Donahue [mailto:donahu...@gmail.com] 
Sent: Wednesday, March 26, 2014 2:54 PM
To: Tomcat Users List
Subject: Re: Scripting Tomcat installation versus multiple instances

On Wed, Mar 26, 2014 at 11:32 AM, Sebastien Tardif  
sebastien.tardif.contrac...@gmo.com wrote:

 I'm confused by the commands given by Tomcat documentation about 
 creating different instances, it says: service install instance1 but 
 service is not a command provided by Tomcat or Windows, see 
 http://tomcat.apache.org/tomcat-7.0-doc/windows-service-howto.html#Mul
 tiple_Instances

 Almost everything I'm trying to automate using that page is not 
 working, maybe it's rare people automate installation on Windows?


The service command is located here:  \apache-tomcat-7.0.52\bin

change directories to this location and run that command.

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Re: Scripting Tomcat installation versus multiple instances

[André Warnier]

Leo Donahue wrote:

On Wed, Mar 26, 2014 at 11:32 AM, Sebastien Tardif 
sebastien.tardif.contrac...@gmo.com wrote:


I'm confused by the commands given by Tomcat documentation about creating
different instances, it says: service install instance1 but service is
not a command provided by Tomcat or Windows, see
http://tomcat.apache.org/tomcat-7.0-doc/windows-service-howto.html#Multiple_Instances

Almost everything I'm trying to automate using that page is not working,
maybe it's rare people automate installation on Windows?



The service command is located here:  \apache-tomcat-7.0.52\bin

change directories to this location and run that command.



Maybe also the OP did not download the correct package to have that command.
For some reason which is still mysterious to me, the Service Installer package does not 
contain all the files which the ZIP package contains.

And bin/service.bat is probably among the ones missing.


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Re: Scripting Tomcat installation versus multiple instances

[David kerber]

On 3/26/2014 3:25 PM, André Warnier wrote:

Leo Donahue wrote:

On Wed, Mar 26, 2014 at 11:32 AM, Sebastien Tardif 
sebastien.tardif.contrac...@gmo.com wrote:


I'm confused by the commands given by Tomcat documentation about
creating
different instances, it says: service install instance1 but
service is
not a command provided by Tomcat or Windows, see
http://tomcat.apache.org/tomcat-7.0-doc/windows-service-howto.html#Multiple_Instances


Almost everything I'm trying to automate using that page is not working,
maybe it's rare people automate installation on Windows?



The service command is located here:  \apache-tomcat-7.0.52\bin

change directories to this location and run that command.



Maybe also the OP did not download the correct package to have that
command.
For some reason which is still mysterious to me, the Service Installer
package does not contain all the files which the ZIP package contains.
And bin/service.bat is probably among the ones missing.


Yes, it is.  When I am setting up a new install, I do the windows 
install and then unzip the .zip package on top of it, so I have all the 
.bat files as well.  I don't fully automate my installations, but I do 
some scripting to make it easier to be consistent with my naming and 
configuration.




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Re: Scripting Tomcat installation versus multiple instances

[André Warnier]

Despite your name, you are too quick (and not lazy enough).
You could have waited an hour, to get that solution right here.
;-)

Sebastien Tardif wrote:

Ok, I got it.

When I installed Tomcat on Windows, I used the Windows Service Installer, the 
executable, not the zip.

It seems the installation will rename the executables to whatever name you give 
to your instance, but that executable can be used like service.bat for that 
command. The executables are renamed so that when you execute them they default 
to match the Windows service with the same name.

Also, the same Tomcat documentation mentions a batch file called service.bat, 
that file doesn't exist in the executable installer but does exists in the zip 
file for Windows.

To debug installation of Tomcat's services, it's useful to know that the 
registry location that persist all the settings is under: 
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Apache Software Foundation\Procrun 2.0

-Original Message-
From: Leo Donahue [mailto:donahu...@gmail.com] 
Sent: Wednesday, March 26, 2014 2:54 PM

To: Tomcat Users List
Subject: Re: Scripting Tomcat installation versus multiple instances

On Wed, Mar 26, 2014 at 11:32 AM, Sebastien Tardif  
sebastien.tardif.contrac...@gmo.com wrote:

I'm confused by the commands given by Tomcat documentation about 
creating different instances, it says: service install instance1 but 
service is not a command provided by Tomcat or Windows, see 
http://tomcat.apache.org/tomcat-7.0-doc/windows-service-howto.html#Mul

tiple_Instances

Almost everything I'm trying to automate using that page is not 
working, maybe it's rare people automate installation on Windows?




The service command is located here:  \apache-tomcat-7.0.52\bin

change directories to this location and run that command.

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Re: Scripting Tomcat installation versus multiple instances

[Leo Donahue]

On Wed, Mar 26, 2014 at 12:35 PM, André Warnier a...@ice-sa.com wrote:

 Despite your name, you are too quick (and not lazy enough).
 You could have waited an hour, to get that solution right here.
 ;-)


 Sebastien Tardif wrote:


 Oh no you didn't, just top post. ?

Re: [OT] Scripting Tomcat installation versus multiple instances

[André Warnier]

Leo Donahue wrote:

On Wed, Mar 26, 2014 at 12:35 PM, André Warnier a...@ice-sa.com wrote:


Despite your name, you are too quick (and not lazy enough).
You could have waited an hour, to get that solution right here.
;-)


Sebastien Tardif wrote:


Oh no you didn't, just top post. ?




Well, you see, it's all about the context.
It's a rather subtle thing really, and one needs a bit of feeling to do this 
just right.

If you are answering some particular question in the original text, or you are commenting 
on a particular section, then it makes it much easier for everyone (or at least Western 
readers), if you keep questions and answers in sequence.


See Mark's previous post in Re: tomcat 5.5.26 misses a jar contaning 
org.apache.tomcat.core.BaseInterceptor . . .

and imagine this all top-posted..

However, if you were to make a general comment or observation not really related to any 
section in particular, but to the message as a whole, then why not place it where it is 
easiest to read without scrolling ?


Now let's not allow this to spread unduly; I suggest that only long-time contributors to 
the list (3 years or more), would have the proper appreciation and restraint to be allowed 
to flaunt the general rules once in a while.





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RE: Scripting Tomcat installation versus multiple instances

[Jeffrey Janner]

 -Original Message-
 From: David kerber [mailto:dcker...@verizon.net]
 Sent: Wednesday, March 26, 2014 2:35 PM
 To: Tomcat Users List
 Subject: Re: Scripting Tomcat installation versus multiple instances
 
 On 3/26/2014 3:25 PM, André Warnier wrote:
  Leo Donahue wrote:
  On Wed, Mar 26, 2014 at 11:32 AM, Sebastien Tardif 
  sebastien.tardif.contrac...@gmo.com wrote:
 
  I'm confused by the commands given by Tomcat documentation about
  creating different instances, it says: service install instance1
  but service is not a command provided by Tomcat or Windows, see
  http://tomcat.apache.org/tomcat-7.0-doc/windows-service-
 howto.html#M
  ultiple_Instances
 
 
  Almost everything I'm trying to automate using that page is not
  working, maybe it's rare people automate installation on Windows?
 
 
  The service command is located here:  \apache-tomcat-7.0.52\bin
 
  change directories to this location and run that command.
 
 
  Maybe also the OP did not download the correct package to have that
  command.
  For some reason which is still mysterious to me, the Service
 Installer
  package does not contain all the files which the ZIP package
 contains.
  And bin/service.bat is probably among the ones missing.
 
 Yes, it is.  When I am setting up a new install, I do the windows
 install and then unzip the .zip package on top of it, so I have all the
 .bat files as well.  I don't fully automate my installations, but I do
 some scripting to make it easier to be consistent with my naming and
 configuration.
 

I've found with the Windows service installer that I've never needed the *.bat 
files that come with the zip file.
However, one thing I'm not sure about is if the WSI has a -silent mode.  It 
would be great if it did.  It really would help out in scripting the install as 
part of another install, etc.


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Re: Multiple instances of Tomcat 7.0 on one server

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

To whom it mat concern,

On 7/19/13 1:37 PM, Tomcat Random wrote:
 We currently are setting a site that receives fairly heavy traffic
 (5000 simultaneous users). We have two physical servers.
 
 As a general idea, is there performance to be gained by running
 multiple instances of Tomcat 7.0? For example, two instances on one
 physical server and two instances on the other physical server?
 Assume all are running the same webapp.

You are unlikely to see a performance benefit by running two (or more)
Tomcat instances on the same server.

There are other benefits, though. For instance, you can configure
Tomcat for load-balancing and then use a fronting server like httpd to
direct traffic to a subset of your instances in order to, for
instance, upgrade each instance individually with no (perceived)
downtime. You can of course do this with separate physical servers, too.

Separate Tomcat instances means that you can run separate Tomcat
versions and separate JVM versions in parallel. We find this very
valuable at $WORK and so we run each webapp in a separate JVM even
when multiple webapps are deployed on a single physical server.

- -chris
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Re: Multiple instances of Tomcat 7.0 on one server

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

Leon,

On 7/19/13 3:48 PM, Leon Rosenberg wrote:
 * you have multiple physical resources your app can't use properly.
 For example if you could give each instance its own database or its
 own file system.

Related: if you are running on a 32-bit OS, you can't use huge heaps.
You can load-balance between several JVM instances on the same
physical machine and effectively use more heap space (across the
cluster, not in a single JVM, of course).

- -chris
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Multiple instances of Tomcat 7.0 on one server

[Tomcat Random]

We currently are setting a site that receives fairly heavy traffic (5000
simultaneous users). We have two physical servers.

As a general idea, is there performance to be gained by running multiple
instances of Tomcat 7.0? For example, two instances on one physical server
and two instances on the other physical server? Assume all are running the
same webapp.

TIA

Re: Multiple instances of Tomcat 7.0 on one server

[Leon Rosenberg]

Hello Mr. Random,

as usual there is no easy answer here.
I think the most correct answer would be RATHER NOT.
There is rather no performance to be gained but running multiple instances
of the same app in multiple tomcats on the same physical machine except for:
* you need a lot of heap per session. In this case you will probably be
able to save gc time and performance. So in case you need more than 12 Gb
Heap separation would make sense.
* you have multiple physical resources your app can't use properly. For
example if you could give each instance its own database or its own file
system.
* you have concurrency issues in your application.

Drawbacks:
- Database. If you have one. You will have more connections and evtl. more
locks. And both are limited resources.

If you want a more detailed answer, you should tell us a bit about your
app.
Or, better, you start to monitor your app, run one physical server with one
instance and another one with two and compare.
By using a monitoring tool like moskito: http://www.moskito.org.

regards
Leon


On Fri, Jul 19, 2013 at 7:37 PM, Tomcat Random tomcat.ran...@gmail.comwrote:

 We currently are setting a site that receives fairly heavy traffic (5000
 simultaneous users). We have two physical servers.

 As a general idea, is there performance to be gained by running multiple
 instances of Tomcat 7.0? For example, two instances on one physical server
 and two instances on the other physical server? Assume all are running the
 same webapp.

 TIA

multiple instances of tomcat daemon

[Mohit.Garg]

Hi
 
I am using a tomcat server on a Linux machine.
Is there any way I can run multiple instances of apache daemon process so that 
if daemon for environment A do not have access to files for environment B.
In short I want to run multiple daemon processes.
 
Thanks  Regards

MOHIT GARG 
Analyst 
International Banking
RBS
Block No 1, Tower A, Unitech Infospace Complex Sector 21, Gurgaon, Haryana, 
122002, India
Office: +91 8860190177 


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Re: multiple instances of tomcat daemon

[André Warnier]

mohit.g...@rbs.com wrote:

Hi
 
I am using a tomcat server on a Linux machine.

Is there any way I can run multiple instances of apache daemon process so that 
if daemon for environment A do not have access to files for environment B.
In short I want to run multiple daemon processes.
 

That's not really what I meant by rephrasing your question.  Try again ?

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Re: multiple instances of tomcat daemon

[Mark Eggers]

On 2/6/2013 1:28 AM, mohit.g...@rbs.com wrote:

Hi

I am using a tomcat server on a Linux machine. Is there any way I can
run multiple instances of apache daemon process so that if daemon for
environment A do not have access to files for environment B. In short
I want to run multiple daemon processes.

Thanks  Regards


Read RUNNING.txt in the root directory of the downloaded Tomcat bundle.

. . . . just my two cents.
/mde/

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Re: Tomcat multiple instances runs as service from same exe file

[Pid]

On 05/01/2012 17:19, Khailovsky, Igor wrote:
 Hi Jeff,
 
 Our application should provide ability to manage the application instances 
 dynamically (runs into separate Tomcat container). One of requirements is 
 using same execution in case multiple instances - option to provide to 
 customer an easy way for update/upgrade Tomcat core.
 
 Thanks for your help. 

I will assume you have read the RUNNING.txt file in your distribution.

These are the relevant documentation pages:

 http://tomcat.apache.org/tomcat-6.0-doc/setup.html#Windows

 http://tomcat.apache.org/tomcat-6.0-doc/windows-service-howto.html


p

 -Original Message-
 From: Jeffrey Janner [mailto:jeffrey.jan...@polydyne.com] 
 Sent: Thursday, January 05, 2012 17:19
 To: 'Tomcat Users List'
 Subject: RE: Tomcat multiple instances runs as service from same exe file
 
 Igor -
 Since you are using Tomcat 6.x, why not just perform a second install.
 The latest installer lets you install multiple instances with different names.
 Each install only takes up 10MB and it is much easier doing it this way than 
 the old way of duplicating folders and running the procrun setups manually.
 I run several servers this way (5 to 6 instances per server), and it takes a 
 whole lot less effort to maintain than the old way of doing things that I had 
 to use back in the tomcat 5.5.x days.
 Jeff
 
 -Original Message-
 From: Khailovsky, Igor [mailto:igor.khailov...@verint.com]
 Sent: Thursday, January 05, 2012 6:01 AM
 To: users@tomcat.apache.org
 Subject: RE: Tomcat multiple instances runs as service from same exe 
 file

 Hello All,

 How to execute multiple instances of Tomcat server as windows services 
 from same physical location (CATALINA_HOME) without tomcat executable 
 replication? In other words, how to point a Tomcat windows service to 
 specific server.xml (not a default location)?

 I know that this option is available for Tomcat that was executed from 
 command line.

 The question is about Tomcat v.6.0 that runs as Windows 2008 service.



 Thanks!

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 If you have received this transmission in error, please immediately reply to 
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RE: Tomcat multiple instances runs as service from same exe file

[Khailovsky, Igor]

P-
I investigated these documents before asked the question, but did not find 
relevant answer. If you really know answer for my question, please specify it.

-Original Message-
From: Pid [mailto:p...@pidster.com] 
Sent: Friday, January 06, 2012 11:41
To: Tomcat Users List
Subject: Re: Tomcat multiple instances runs as service from same exe file

On 05/01/2012 17:19, Khailovsky, Igor wrote:
 Hi Jeff,
 
 Our application should provide ability to manage the application instances 
 dynamically (runs into separate Tomcat container). One of requirements is 
 using same execution in case multiple instances - option to provide to 
 customer an easy way for update/upgrade Tomcat core.
 
 Thanks for your help. 

I will assume you have read the RUNNING.txt file in your distribution.

These are the relevant documentation pages:

 http://tomcat.apache.org/tomcat-6.0-doc/setup.html#Windows

 http://tomcat.apache.org/tomcat-6.0-doc/windows-service-howto.html


p

 -Original Message-
 From: Jeffrey Janner [mailto:jeffrey.jan...@polydyne.com]
 Sent: Thursday, January 05, 2012 17:19
 To: 'Tomcat Users List'
 Subject: RE: Tomcat multiple instances runs as service from same exe 
 file
 
 Igor -
 Since you are using Tomcat 6.x, why not just perform a second install.
 The latest installer lets you install multiple instances with different names.
 Each install only takes up 10MB and it is much easier doing it this way than 
 the old way of duplicating folders and running the procrun setups manually.
 I run several servers this way (5 to 6 instances per server), and it takes a 
 whole lot less effort to maintain than the old way of doing things that I had 
 to use back in the tomcat 5.5.x days.
 Jeff
 
 -Original Message-
 From: Khailovsky, Igor [mailto:igor.khailov...@verint.com]
 Sent: Thursday, January 05, 2012 6:01 AM
 To: users@tomcat.apache.org
 Subject: RE: Tomcat multiple instances runs as service from same exe 
 file

 Hello All,

 How to execute multiple instances of Tomcat server as windows 
 services from same physical location (CATALINA_HOME) without tomcat 
 executable replication? In other words, how to point a Tomcat windows 
 service to specific server.xml (not a default location)?

 I know that this option is available for Tomcat that was executed 
 from command line.

 The question is about Tomcat v.6.0 that runs as Windows 2008 service.



 Thanks!

 This electronic message may contain proprietary and confidential 
 information of Verint Systems Inc., its affiliates and/or subsidiaries.
 The information is intended to be for the use of the individual(s) or
 entity(ies) named above.  If you are not the intended recipient (or 
 authorized to receive this e-mail for the intended recipient), you 
 may not use, copy, disclose or distribute to anyone this message or 
 any information contained in this message.  If you have received this 
 electronic message in error, please notify us by replying to this e- 
 mail.

 
 __
 
 
 Confidentiality Notice:  This Transmission (including any attachments) may 
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 disclosure under applicable law.  If the reader of this message is not the 
 intended recipient you are hereby notified that any dissemination, 
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 If you have received this transmission in error, please immediately reply to 
 the sender or telephone (512) 343-9100 and delete this transmission from your 
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Re: Tomcat multiple instances runs as service from same exe file

[Konstantin Kolinko]

2012/1/6 Khailovsky, Igor igor.khailov...@verint.com:
 P-
 I investigated these documents before asked the question, but did not find 
 relevant answer. If you really know answer for my question, please specify it.

You cannot run multiple services from the same exe.
Moreover, the exe file name is used as a key to look up service
configuration. So if you have several services all their exe files
must have different names regardless of their location.

The service launcher is not part of Apache Tomcat project. It is just
Apache Commons Daemon.



 -Original Message-
 From: Pid [mailto:p...@pidster.com]
 Sent: Friday, January 06, 2012 11:41
 To: Tomcat Users List
 Subject: Re: Tomcat multiple instances runs as service from same exe file

 On 05/01/2012 17:19, Khailovsky, Igor wrote:
 Hi Jeff,

 Our application should provide ability to manage the application instances 
 dynamically (runs into separate Tomcat container). One of requirements is 
 using same execution in case multiple instances - option to provide to 
 customer an easy way for update/upgrade Tomcat core.

 Thanks for your help.

 I will assume you have read the RUNNING.txt file in your distribution.

 These are the relevant documentation pages:

  http://tomcat.apache.org/tomcat-6.0-doc/setup.html#Windows

  http://tomcat.apache.org/tomcat-6.0-doc/windows-service-howto.html


 p

 -Original Message-
 From: Jeffrey Janner [mailto:jeffrey.jan...@polydyne.com]
 Sent: Thursday, January 05, 2012 17:19
 To: 'Tomcat Users List'
 Subject: RE: Tomcat multiple instances runs as service from same exe
 file

 Igor -
 Since you are using Tomcat 6.x, why not just perform a second install.
 The latest installer lets you install multiple instances with different 
 names.
 Each install only takes up 10MB and it is much easier doing it this way than 
 the old way of duplicating folders and running the procrun setups manually.
 I run several servers this way (5 to 6 instances per server), and it takes a 
 whole lot less effort to maintain than the old way of doing things that I 
 had to use back in the tomcat 5.5.x days.
 Jeff

 -Original Message-
 From: Khailovsky, Igor [mailto:igor.khailov...@verint.com]
 Sent: Thursday, January 05, 2012 6:01 AM
 To: users@tomcat.apache.org
 Subject: RE: Tomcat multiple instances runs as service from same exe
 file

 Hello All,

 How to execute multiple instances of Tomcat server as windows
 services from same physical location (CATALINA_HOME) without tomcat
 executable replication? In other words, how to point a Tomcat windows
 service to specific server.xml (not a default location)?

 I know that this option is available for Tomcat that was executed
 from command line.

 The question is about Tomcat v.6.0 that runs as Windows 2008 service.



 Thanks!

 This electronic message may contain proprietary and confidential
 information of Verint Systems Inc., its affiliates and/or subsidiaries.
 The information is intended to be for the use of the individual(s) or
 entity(ies) named above.  If you are not the intended recipient (or
 authorized to receive this e-mail for the intended recipient), you
 may not use, copy, disclose or distribute to anyone this message or
 any information contained in this message.  If you have received this
 electronic message in error, please notify us by replying to this e-
 mail.


 __
 

 Confidentiality Notice:  This Transmission (including any attachments) may 
 contain information that is privileged, confidential, and exempt from 
 disclosure under applicable law.  If the reader of this message is not the 
 intended recipient you are hereby notified that any dissemination, 
 distribution, or copying of this communication is strictly prohibited.

 If you have received this transmission in error, please immediately reply to 
 the sender or telephone (512) 343-9100 and delete this transmission from 
 your system.


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 This electronic

RE: Tomcat multiple instances runs as service from same exe file

[Khailovsky, Igor]

Hello All,

How to execute multiple instances of Tomcat server as windows services from 
same physical location (CATALINA_HOME) without tomcat executable replication? 
In other words, how to point a Tomcat windows service to specific server.xml 
(not a default location)?

I know that this option is available for Tomcat that was executed from command 
line.

The question is about Tomcat v.6.0 that runs as Windows 2008 service.



Thanks!

This electronic message may contain proprietary and confidential information of 
Verint Systems Inc., its affiliates and/or subsidiaries.
The information is intended to be for the use of the individual(s) or
entity(ies) named above.  If you are not the intended recipient (or authorized 
to receive this e-mail for the intended recipient), you may not use, copy, 
disclose or distribute to anyone this message or any information contained in 
this message.  If you have received this electronic message in error, please 
notify us by replying to this e-mail.

RE: Tomcat multiple instances runs as service from same exe file

[Jeffrey Janner]

Igor -
Since you are using Tomcat 6.x, why not just perform a second install.
The latest installer lets you install multiple instances with different names.
Each install only takes up 10MB and it is much easier doing it this way than 
the old way of duplicating folders and running the procrun setups manually.
I run several servers this way (5 to 6 instances per server), and it takes a 
whole lot less effort to maintain than the old way of doing things that I had 
to use back in the tomcat 5.5.x days.
Jeff

 -Original Message-
 From: Khailovsky, Igor [mailto:igor.khailov...@verint.com]
 Sent: Thursday, January 05, 2012 6:01 AM
 To: users@tomcat.apache.org
 Subject: RE: Tomcat multiple instances runs as service from same exe
 file
 
 Hello All,
 
 How to execute multiple instances of Tomcat server as windows services
 from same physical location (CATALINA_HOME) without tomcat executable
 replication? In other words, how to point a Tomcat windows service to
 specific server.xml (not a default location)?
 
 I know that this option is available for Tomcat that was executed from
 command line.
 
 The question is about Tomcat v.6.0 that runs as Windows 2008 service.
 
 
 
 Thanks!
 
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RE: Tomcat multiple instances runs as service from same exe file

[Khailovsky, Igor]

Hi Jeff,

Our application should provide ability to manage the application instances 
dynamically (runs into separate Tomcat container). One of requirements is using 
same execution in case multiple instances - option to provide to customer an 
easy way for update/upgrade Tomcat core.

Thanks for your help. 

-Original Message-
From: Jeffrey Janner [mailto:jeffrey.jan...@polydyne.com] 
Sent: Thursday, January 05, 2012 17:19
To: 'Tomcat Users List'
Subject: RE: Tomcat multiple instances runs as service from same exe file

Igor -
Since you are using Tomcat 6.x, why not just perform a second install.
The latest installer lets you install multiple instances with different names.
Each install only takes up 10MB and it is much easier doing it this way than 
the old way of duplicating folders and running the procrun setups manually.
I run several servers this way (5 to 6 instances per server), and it takes a 
whole lot less effort to maintain than the old way of doing things that I had 
to use back in the tomcat 5.5.x days.
Jeff

 -Original Message-
 From: Khailovsky, Igor [mailto:igor.khailov...@verint.com]
 Sent: Thursday, January 05, 2012 6:01 AM
 To: users@tomcat.apache.org
 Subject: RE: Tomcat multiple instances runs as service from same exe 
 file
 
 Hello All,
 
 How to execute multiple instances of Tomcat server as windows services 
 from same physical location (CATALINA_HOME) without tomcat executable 
 replication? In other words, how to point a Tomcat windows service to 
 specific server.xml (not a default location)?
 
 I know that this option is available for Tomcat that was executed from 
 command line.
 
 The question is about Tomcat v.6.0 that runs as Windows 2008 service.
 
 
 
 Thanks!
 
 This electronic message may contain proprietary and confidential 
 information of Verint Systems Inc., its affiliates and/or subsidiaries.
 The information is intended to be for the use of the individual(s) or
 entity(ies) named above.  If you are not the intended recipient (or 
 authorized to receive this e-mail for the intended recipient), you may 
 not use, copy, disclose or distribute to anyone this message or any 
 information contained in this message.  If you have received this 
 electronic message in error, please notify us by replying to this e- 
 mail.
 

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Re: running multiple instances of Tomcat on same server

[Peter Crowther]

On 4 February 2011 14:27, James Godrej jamesgod...@yahoo.in wrote:

 I have to run multiple instances of Tomcat.
 The reason I am doing so is I have a server where I hosted a learning
 management
 system known as
 Sakai which runs on Tomcat 5.5.30 and now on same server I have to host
 another
 learning management system known as OLAT.


Sakai 2.x makes enough weird modifications to the classloading mechanisms
that I wouldn't recommend running *anything* else in the same JVM as it!
Hopefully v3 will alleviate some of the worse problems.



 As per OLAT  doc here in Tomcat section
 http://www.olat.org/docu/install/olat_install_admin_docu_one_page.html
 it says
 In situations where more than one instance is required (e.g.,
  multiple
 cluster nodes on the same host) it is worth setting up each OLAT instance
 in its
 own JVM and sharing a common base installation
 (see Tomcat documentation
 concerning CATALINA_BASE installations.)

 Can some one point me where is that given on Tomcat official docs or what
 is the
 doc which I gave link above trying to say.

 In the Tomcat installation root, there's a file called RUNNING.txt.  It
gives details on how to run multiple instances of Tomcat side-by-side.  In
essence, you copy the directories that are per-Tomcat (conf, work, webapps
etc.) and leave the read-only directories (bin etc) in one place.

Chuck's point is important.  Each Tomcat instance will need a unique
endpoint for its shutdown port and each connector - you can't run both on
port 80 on the same IP address unless you use some kind of reverse proxy
(there are many options here).

- Peter

Re: Security question about Multiple instances of Tomcat running as non-admin users on a single box

[Guy Pontecorvo]

Our decision to replace the Mac os Xservers with Windows is purely
financial. We already run our software on Windows and though Linux would be
a good choice it is less expensive to support a single platform.

We run as many as 15 apps on a single xServe box. The corresponding Oracle
10g databases run on a separate server. Everything is automated. Start up,
shutdown, updates etc. are scripted and executed using sudo. Each app runs
as a non-admin user and is secure and isolated from the other apps running
on that box.

The more I discuss this it appears to be more of an OS question than a
tomcat question. Someone suggested a pilot program. We are currently
replicating our multi-app server configuration on a windows box...trust but
verify.

Thanks to everyone for their replies on this question.

Guy


On 1/22/11 2:23 AM, Brett Delle Grazie brett.dellegra...@gmail.com
wrote:

 On 21 January 2011 19:29, Jeffrey Janner jeffrey.jan...@polydyne.com wrote:
 Guy -
 
 Why switch to Windows when you can still get OSX Server for Mac Pros or
 Minis?
 
 Why run Windows at all when you can switch to Linux and have all the
 command line goodness you were used to in Xserver?
 ;)
 
 
 That out of the way, Tomcat works basically the same on Windows as on Mac,
 except where running as a service is concerned.  Yes, Tomcat will respect
 Windows permission settings, etc., just like any other Windows app.  It
 should run under a non-admin account.  You might have some issues allowing
 non-admins to start/stop the service however - if that is in your
 requirements.
 
 When all else fails, get you a Windows box and set Tomcat up as you'd like on
 it and see what problems occur when you try to use it the way you do now.
  It's called a pilot program.
 
 Jeff
 
 -Original Message-
 From: Guy Pontecorvo [mailto:guy.ponteco...@pearson.com]
 Sent: Friday, January 21, 2011 11:56 AM
 To: users@tomcat.apache.org
 Subject: Security question about Multiple instances of Tomcat running
 as non-admin users on a single box
 
 
 We currently run multiple instances of tomcat Version 6.0.20, each in
 its
 own non-admin user account under Mac OSX 10.5. This has been a great
 way to
 host multiple web applications (student information systems) on a
 single
 box. Each app is secure in its own user account space and can't read or
 write outside of its user directory. An administrator can manage them
 as a
 whole using sudo.
 
 Because Xserve is being discontinued we are considering the possibility
 of
 migrating our environment to Windows 2008 R2
 
 We can create the users, run windows services using the credentials as
 a
 local user, name the service whatever we'd like, and stop, start it by
 that name via scripts. The biggest gotchas I can think of is can we get
 tomcat to run as a non-admin user and will tomcat respect ntfs file
 system permissions that should be setup for separate logs, temp files,
 etc.?
 
 We have too many instances to consider running each hosted app in its
 own
 vm.
 
 Thanks in advance for any advice or experience you can share.
 
 
 Guy Pontecorvo
 Engineering Manager
 School Systems
 
 10911 White Rock Road
 Rancho Cordova, CA 95630
 
 O:  (916) 288-1804
 M:  (530) 701-8842
 E: guy.ponteco...@pearson.com
 
 Pearson
 Always Learning
 Learn more at http://www.pearson.com
 
 
 
 -
 To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
 For additional commands, e-mail: users-h...@tomcat.apache.org
 
 
 __
 
 Confidentiality Notice:  This Transmission (including any attachments) may
 contain information that is privileged, confidential, and exempt from
 disclosure under applicable law.  If the reader of this message is not the
 intended recipient you are hereby notified that any dissemination,
 distribution, or copying of this communication is strictly prohibited.
 
 If you have received this transmission in error, please immediately reply to
 the sender or telephone (512) 343-9100 and delete this transmission from your
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Re: Security question about Multiple instances of Tomcat running as non-admin users on a single box

[Brett Delle Grazie]

Hi,

On 25 January 2011 18:00, Guy Pontecorvo guy.ponteco...@pearson.com wrote:

 We run as many as 15 apps on a single xServe box. The corresponding Oracle
 10g databases run on a separate server. Everything is automated. Start up,
 shutdown, updates etc. are scripted and executed using sudo. Each app runs
 as a non-admin user and is secure and isolated from the other apps running
 on that box.

For this reason alone I would use Linux.

From what you have said, it should be near trivial to move your 15
apps from Xserve to Linux
whereas to Windows you're going to have to configure everything again
(separate user accounts,
separate instances etc).

Both solutions are feasible, it just depends upon:
(a) the amount of work you want to do and
(b) the experience you have with both operating systems.

Good luck.

-- 
Best Regards,

Brett Delle Grazie

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Re: Security question about Multiple instances of Tomcat running as non-admin users on a single box

[Brett Delle Grazie]

On 21 January 2011 19:29, Jeffrey Janner jeffrey.jan...@polydyne.com wrote:
 Guy -

 Why switch to Windows when you can still get OSX Server for Mac Pros or Minis?

Why run Windows at all when you can switch to Linux and have all the
command line goodness you were used to in Xserver?
;)


 That out of the way, Tomcat works basically the same on Windows as on Mac, 
 except where running as a service is concerned.  Yes, Tomcat will respect 
 Windows permission settings, etc., just like any other Windows app.  It 
 should run under a non-admin account.  You might have some issues allowing 
 non-admins to start/stop the service however - if that is in your 
 requirements.

 When all else fails, get you a Windows box and set Tomcat up as you'd like on 
 it and see what problems occur when you try to use it the way you do now.  
 It's called a pilot program.

 Jeff

 -Original Message-
 From: Guy Pontecorvo [mailto:guy.ponteco...@pearson.com]
 Sent: Friday, January 21, 2011 11:56 AM
 To: users@tomcat.apache.org
 Subject: Security question about Multiple instances of Tomcat running
 as non-admin users on a single box


 We currently run multiple instances of tomcat Version 6.0.20, each in
 its
 own non-admin user account under Mac OSX 10.5. This has been a great
 way to
 host multiple web applications (student information systems) on a
 single
 box. Each app is secure in its own user account space and can't read or
 write outside of its user directory. An administrator can manage them
 as a
 whole using sudo.

 Because Xserve is being discontinued we are considering the possibility
 of
 migrating our environment to Windows 2008 R2

 We can create the users, run windows services using the credentials as
 a
 local user, name the service whatever we'd like, and stop, start it by
 that name via scripts. The biggest gotchas I can think of is can we get
 tomcat to run as a non-admin user and will tomcat respect ntfs file
 system permissions that should be setup for separate logs, temp files,
 etc.?

 We have too many instances to consider running each hosted app in its
 own
 vm.

 Thanks in advance for any advice or experience you can share.

 
 Guy Pontecorvo
 Engineering Manager
 School Systems

 10911 White Rock Road
 Rancho Cordova, CA 95630

 O:  (916) 288-1804
 M:  (530) 701-8842
 E: guy.ponteco...@pearson.com

 Pearson
 Always Learning
 Learn more at http://www.pearson.com
 


 -
 To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
 For additional commands, e-mail: users-h...@tomcat.apache.org


 __

 Confidentiality Notice:  This Transmission (including any attachments) may 
 contain information that is privileged, confidential, and exempt from 
 disclosure under applicable law.  If the reader of this message is not the 
 intended recipient you are hereby notified that any dissemination, 
 distribution, or copying of this communication is strictly prohibited.

 If you have received this transmission in error, please immediately reply to 
 the sender or telephone (512) 343-9100 and delete this transmission from your 
 system.


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-- 
Best Regards,

Brett Delle Grazie

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Re: Security question about Multiple instances of Tomcat running as non-admin users on a single box

[Michael Ludwig]

Guy Pontecorvo schrieb am 21.01.2011 um 09:56 (-0800):
 
 We currently run multiple instances of tomcat Version 6.0.20, each in
 its own non-admin user account under Mac OSX 10.5. This has been a
 great way to host multiple web applications (student information
 systems) on a single box. Each app is secure in its own user account
 space and can't read or write outside of its user directory.

But at the end of your message you write:

 We have too many instances to consider running each hosted app in its
 own vm.

Well, why would you want to do that anyway? To increase application
isolation?

So do you have, say, three Tomcats, each in its own JVM, running under a
user account of your choice, and each hosting, say, five apps?

 The biggest gotchas I can think of is can we get tomcat to run as a
 non-admin user and will tomcat respect ntfs file system permissions
 that should be setup for separate logs, temp files, etc.?

Of course you can run Tomcat as non-admin.

NTFS permissions is not something Tomcat may choose to respect or
ignore, but something that is forced upon Tomcat by the OS.

-- 
Michael Ludwig

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Re: Security question about Multiple instances of Tomcat running as non-admin users on a single box

[Pid]

On 1/21/11 5:56 PM, Guy Pontecorvo wrote:
 Because Xserve is being discontinued we are considering the possibility of
 migrating our environment to Windows 2008 R2

The JDK tools have a few more small functions on *nix than Windows -
small but rather useful.  This IMHO, is one key reason to stick with the
same ancestry you have now.


p


0x62590808.asc
Description: application/pgp-keys


signature.asc
Description: OpenPGP digital signature

Security question about Multiple instances of Tomcat running as non-admin users on a single box

[Guy Pontecorvo]

We currently run multiple instances of tomcat Version 6.0.20, each in its
own non-admin user account under Mac OSX 10.5. This has been a great way to
host multiple web applications (student information systems) on a single
box. Each app is secure in its own user account space and can't read or
write outside of its user directory. An administrator can manage them as a
whole using sudo.

Because Xserve is being discontinued we are considering the possibility of
migrating our environment to Windows 2008 R2

We can create the users, run windows services using the credentials as a
local user, name the service whatever we'd like, and stop, start it by
that name via scripts. The biggest gotchas I can think of is can we get
tomcat to run as a non-admin user and will tomcat respect ntfs file
system permissions that should be setup for separate logs, temp files,
etc.?

We have too many instances to consider running each hosted app in its own
vm.

Thanks in advance for any advice or experience you can share.


Guy Pontecorvo
Engineering Manager
School Systems
 
10911 White Rock Road
Rancho Cordova, CA 95630

O:  (916) 288-1804
M:  (530) 701-8842
E: guy.ponteco...@pearson.com

Pearson 
Always Learning
Learn more at http://www.pearson.com



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RE: Security question about Multiple instances of Tomcat running as non-admin users on a single box

[Jeffrey Janner]

Guy -

Why switch to Windows when you can still get OSX Server for Mac Pros or Minis?

That out of the way, Tomcat works basically the same on Windows as on Mac, 
except where running as a service is concerned.  Yes, Tomcat will respect 
Windows permission settings, etc., just like any other Windows app.  It should 
run under a non-admin account.  You might have some issues allowing non-admins 
to start/stop the service however - if that is in your requirements.

When all else fails, get you a Windows box and set Tomcat up as you'd like on 
it and see what problems occur when you try to use it the way you do now.  It's 
called a pilot program.

Jeff

 -Original Message-
 From: Guy Pontecorvo [mailto:guy.ponteco...@pearson.com]
 Sent: Friday, January 21, 2011 11:56 AM
 To: users@tomcat.apache.org
 Subject: Security question about Multiple instances of Tomcat running
 as non-admin users on a single box
 
 
 We currently run multiple instances of tomcat Version 6.0.20, each in
 its
 own non-admin user account under Mac OSX 10.5. This has been a great
 way to
 host multiple web applications (student information systems) on a
 single
 box. Each app is secure in its own user account space and can't read or
 write outside of its user directory. An administrator can manage them
 as a
 whole using sudo.
 
 Because Xserve is being discontinued we are considering the possibility
 of
 migrating our environment to Windows 2008 R2
 
 We can create the users, run windows services using the credentials as
 a
 local user, name the service whatever we'd like, and stop, start it by
 that name via scripts. The biggest gotchas I can think of is can we get
 tomcat to run as a non-admin user and will tomcat respect ntfs file
 system permissions that should be setup for separate logs, temp files,
 etc.?
 
 We have too many instances to consider running each hosted app in its
 own
 vm.
 
 Thanks in advance for any advice or experience you can share.
 
 
 Guy Pontecorvo
 Engineering Manager
 School Systems
 
 10911 White Rock Road
 Rancho Cordova, CA 95630
 
 O:  (916) 288-1804
 M:  (530) 701-8842
 E: guy.ponteco...@pearson.com
 
 Pearson
 Always Learning
 Learn more at http://www.pearson.com
 
 
 
 -
 To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
 For additional commands, e-mail: users-h...@tomcat.apache.org
 

__

Confidentiality Notice:  This Transmission (including any attachments) may 
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disclosure under applicable law.  If the reader of this message is not the 
intended recipient you are hereby notified that any dissemination, 
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If you have received this transmission in error, please immediately reply to 
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Re: Tomcat 6 performance multiple instances

[Pid]

On 12/9/10 9:04 PM, John Goodleaf wrote:
 Google is giving me too many different answers!
 
 I need to serve a single webapp to a lot of people with acceptable latency.
 There's no need for multiple contexts or any other funkines. Tomcat 6, JVM
 1.6x. I have a hardware load balancer and two 64-bit machines (Windows 2003
 Server--not my choice, yes I'd have preferred Linux) each with two CPUs and
 8GB RAM.
 
 I also have a consultant who insists we need to set up at least two,
 possibly more, instances of Tomcat on each machine for good performance.

I'm late to this thread, but I'd still be interested to hear the
reasoning behind the above.  There are (largely historical) reasons for
doing this for some setups, but I don't see it as required/standard
practice for high performance sites.

(Maybe we don't know enough about your environment.)


p

 I'm
 more inclined to think that a single instance with tuned Java options will
 provide the same performance, but be easier to set up and maintain. If I
 needed to serve different webapps or somehow needed to separate things for
 some reason, I could see it, but given just the one app/context. it seems
 like multiple instances really amounts to second-guessing the OS scheduler.
 
 Also notable: the servers are VMs.
 
 Anyway, I'd appreciate advice, and I don't mind being wrong if you need to
 side with the consultant. If it needs to be complicated to go fast, then
 that's what we'll do... Ideally, I'd try both ways and hit it with JMeter,
 but I lack the time and resources (because mgmt spent the money on our
 consultant). So I must beg for answers here...
 
 Thanks in advance.
 J
 



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Description: application/pgp-keys


signature.asc
Description: OpenPGP digital signature

Re: Tomcat 6 performance multiple instances

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Chuck,

On 12/9/2010 11:09 PM, Caldarale, Charles R wrote:
 I'm also very, very interested in the exact cause for the improvement
 observed with multiple JVMs using another servlet container - which
 may have no applicability to Tomcat.

Glad to see someone else is skeptical. I wonder what the environment
was, too: the JRE version is very sensitive: older versions of the
runtime were much slower for even uncontended locks, etc. and of course
GC gets better with every release.

- -chris

 It's worse than that - the compressed OOPs are relative as well, so
 it's an add and a shift.  However, if you keep the heap size down (so
 that direct 32-bit pointers are used), that extra overhead is
 eliminated - but now you're constrained by a small heap.

I hadn't thought of them being relative, but I guess the OS is obviously
doing some virtual memory mapping as well. Heh... running a 32-bit JVM
will certainly speed-up memory access, as long as you're willing to live
inside a 1.6GiB heap :)

- -chris
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Tomcat 6 performance multiple instances

[John Goodleaf]

Google is giving me too many different answers!

I need to serve a single webapp to a lot of people with acceptable latency.
There's no need for multiple contexts or any other funkines. Tomcat 6, JVM
1.6x. I have a hardware load balancer and two 64-bit machines (Windows 2003
Server--not my choice, yes I'd have preferred Linux) each with two CPUs and
8GB RAM.

I also have a consultant who insists we need to set up at least two,
possibly more, instances of Tomcat on each machine for good performance. I'm
more inclined to think that a single instance with tuned Java options will
provide the same performance, but be easier to set up and maintain. If I
needed to serve different webapps or somehow needed to separate things for
some reason, I could see it, but given just the one app/context. it seems
like multiple instances really amounts to second-guessing the OS scheduler.

Also notable: the servers are VMs.

Anyway, I'd appreciate advice, and I don't mind being wrong if you need to
side with the consultant. If it needs to be complicated to go fast, then
that's what we'll do... Ideally, I'd try both ways and hit it with JMeter,
but I lack the time and resources (because mgmt spent the money on our
consultant). So I must beg for answers here...

Thanks in advance.
J

Re: Tomcat 6 performance multiple instances

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

John,

On 12/9/2010 4:04 PM, John Goodleaf wrote:
 Google is giving me too many different answers!

:(

 I need to serve a single webapp to a lot of people with acceptable latency.

That ought to be possible. What is acceptable latency for your system?
Do you just want to get byte 1 as fast as possible? Or do you mean that
you want total response times to be acceptable?

 There's no need for multiple contexts or any other funkines. Tomcat 6, JVM
 1.6x. I have a hardware load balancer and two 64-bit machines (Windows 2003
 Server--not my choice, yes I'd have preferred Linux) each with two CPUs and
 8GB RAM.

Sounds good. You didn't mention what kinds of CPUs you have. Since they
are 64-bit, they are probably of reasonably recent manufacture.

 I also have a consultant who insists we need to set up at least two,
 possibly more, instances of Tomcat on each machine for good performance.

At this point, I'm skeptical of that argument, though under certain
conditions it might make sense.

 I'm
 more inclined to think that a single instance with tuned Java options will
 provide the same performance, but be easier to set up and maintain.

I agree with you thus far -- without any other requirements being indicated.

 If I
 needed to serve different webapps or somehow needed to separate things for
 some reason, I could see it, but given just the one app/context. it seems
 like multiple instances really amounts to second-guessing the OS scheduler.

Not really, since the threads in one instance aren't that different than
the threads in multiple instances. What you're doing is limiting the
effectiveness of things like VM-based synchronization, etc.

 Also notable: the servers are VMs.

Hmm... which one? Some of them have terrible performance under certain
conditions. For instance, we have some OpenVZ instances that have
horrible I/O performance, stalls, etc. while the CPU seems to be great.

 Anyway, I'd appreciate advice, and I don't mind being wrong if you need to
 side with the consultant. If it needs to be complicated to go fast, then
 that's what we'll do... Ideally, I'd try both ways and hit it with JMeter,
 but I lack the time and resources (because mgmt spent the money on our
 consultant). So I must beg for answers here...

Honestly, benchmarking should be the root of all your decisions when
performance is concerned.

A couple of thoughts on the whole thing:

Each JVM has a minimum amount of memory under which it can possible
operate. Running multiple JVMs (as opposed to a single one) on a single
machine will inflate the amount of memory required for the whole system
with no perceivable benefit in and of itself. If your consultant tells
you that the garbage collector will have to work less, he or she is
right in that each JVM will (likely) have fewer objects to deal with but
then you've got two (or more) GCs operating on the same set of CPUs, so
it's basically a wash.

Since Java is greedy about memory, it's generally best to give the JVM
as much memory as you can afford to. If you split a JVM into two JVMs,
you're lowering the ceiling of each JVM's max memory and potentially
opening yourself up to an OutOfMemoryError if you have certain
operations that require lots of memory. This is a very tough thing to
get a handle on, since any operation that could potentially take down a
small JVM can certainly take down a big one, too. But, if the
memory-heavy operations are relatively infrequent, or you can limit the
number of simultaneous memory-heavy operations, you can have more of
them running in one big heap than in two (or more) smaller ones.

Monitor locks (aka synchronization) can be improved by running
multiple JVMs. Let's say you have a shared resource that is very
popular. One obvious example is a database connection pool. If you have,
say, 1000 threads actively requesting connections from that pool,
contention is relatively high for the lock that protects the integrity
of the pool regardless of the size of the pool. If you split into two
JVMs, then you only have (on average) 500 active threads fighting for
the lock, and you may see performance improve slightly. There is another
edge to that sword, though: you are likely to sacrifice any performance
gains with (somewhat) limited contention by putting another component in
front of Tomcat to decide which JVM handles the request.

If you have an unstable application, running additional JVMs (that is,
more than your hardware and/or network setup requires) can help
alleviate those stability problems: instead of 1/2 of your users getting
their sessions expired because the webapp and/or JVM crashed, you might
be able to get away with 1/4 or 1/8 of your users being interrupted.
That's only a stop-gap solution, though: you should fix your webapp :)

Finally, if you are running a fault-tolerant website with all the
bells-and-whistles, you are probably using either distributable sessions
or something reasonably comparable

Re: Tomcat 6 performance multiple instances

[Tony Anecito]

Hi,

I have done alot of work with another servlet container and your consultant is 
correct. More instances do make a difference. Mainly because certain resources 
like ports/threads and memory management for the heap it makes sense. But you 
still need to test to determine what works best.

I agree about the context funkyness. Been there done that. I went from 2 cpu to 
6 cpu (AMD not Intel) and then tuned my html page size and that made a huge 
difference. My own IT group was floored by the performance. My web service 
response times are down in the 1.5msec range using Tomcat and APR. I used to 
have around 1msec but I think the CPU management and added cpu count caused 
that 
to happen.

Remember to turn off services you do not need and use NUMA and any other 
settings that might help like operand compression for the 64-bit jvm if you use 
it.

Regards,
Tony Anecito
Founder/CEO
MyUniPortal (2010 JavaOne Dukes award)
http://www.myuniportal.com



- Original Message 
From: John Goodleaf j...@goodleaf.net
To: users@tomcat.apache.org
Sent: Thu, December 9, 2010 2:04:16 PM
Subject: Tomcat 6 performance  multiple instances

Google is giving me too many different answers!

I need to serve a single webapp to a lot of people with acceptable latency.
There's no need for multiple contexts or any other funkines. Tomcat 6, JVM
1.6x. I have a hardware load balancer and two 64-bit machines (Windows 2003
Server--not my choice, yes I'd have preferred Linux) each with two CPUs and
8GB RAM.

I also have a consultant who insists we need to set up at least two,
possibly more, instances of Tomcat on each machine for good performance. I'm
more inclined to think that a single instance with tuned Java options will
provide the same performance, but be easier to set up and maintain. If I
needed to serve different webapps or somehow needed to separate things for
some reason, I could see it, but given just the one app/context. it seems
like multiple instances really amounts to second-guessing the OS scheduler.

Also notable: the servers are VMs.

Anyway, I'd appreciate advice, and I don't mind being wrong if you need to
side with the consultant. If it needs to be complicated to go fast, then
that's what we'll do... Ideally, I'd try both ways and hit it with JMeter,
but I lack the time and resources (because mgmt spent the money on our
consultant). So I must beg for answers here...

Thanks in advance.
J



  

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Re: Tomcat 6 performance multiple instances

[John Goodleaf]

On Thu, Dec 9, 2010 at 1:28 PM, Christopher Schultz 
ch...@christopherschultz.net wrote:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1

 John,

 On 12/9/2010 4:04 PM, John Goodleaf wrote:
  Google is giving me too many different answers!

 :(

  I need to serve a single webapp to a lot of people with acceptable
 latency.

 That ought to be possible. What is acceptable latency for your system?
 Do you just want to get byte 1 as fast as possible? Or do you mean that
 you want total response times to be acceptable?


I guess that IS a bit vague. I think the measure the users will use
implicitly is page turn. Total response time, in other words.


  There's no need for multiple contexts or any other funkines. Tomcat 6,
 JVM
  1.6x. I have a hardware load balancer and two 64-bit machines (Windows
 2003
  Server--not my choice, yes I'd have preferred Linux) each with two CPUs
 and
  8GB RAM.

 Sounds good. You didn't mention what kinds of CPUs you have. Since they
 are 64-bit, they are probably of reasonably recent manufacture.


They are VM, so, fake 2.4Ghz Xeon


  I also have a consultant who insists we need to set up at least two,
  possibly more, instances of Tomcat on each machine for good performance.

 At this point, I'm skeptical of that argument, though under certain
 conditions it might make sense.

  I'm
  more inclined to think that a single instance with tuned Java options
 will
  provide the same performance, but be easier to set up and maintain.

 I agree with you thus far -- without any other requirements being
 indicated.

  If I
  needed to serve different webapps or somehow needed to separate things
 for
  some reason, I could see it, but given just the one app/context. it seems
  like multiple instances really amounts to second-guessing the OS
 scheduler.

 Not really, since the threads in one instance aren't that different than
 the threads in multiple instances. What you're doing is limiting the
 effectiveness of things like VM-based synchronization, etc.

  Also notable: the servers are VMs.


VMWare ESX. I do not know exactly which ESX version (hosting provider walls
this off...).


 Hmm... which one? Some of them have terrible performance under certain
 conditions. For instance, we have some OpenVZ instances that have
 horrible I/O performance, stalls, etc. while the CPU seems to be great.

  Anyway, I'd appreciate advice, and I don't mind being wrong if you need
 to
  side with the consultant. If it needs to be complicated to go fast, then
  that's what we'll do... Ideally, I'd try both ways and hit it with
 JMeter,
  but I lack the time and resources (because mgmt spent the money on our
  consultant). So I must beg for answers here...

 Honestly, benchmarking should be the root of all your decisions when
 performance is concerned.

 I agree and wish I had the time and resources to do it. I need to deploy on
very short timelines. There actually was a performance testing phase
budgeted, but it got killed after the business owner dragged her feet on
requirements early in the project. Not that I'm bitter or anything...


 A couple of thoughts on the whole thing:

 Each JVM has a minimum amount of memory under which it can possible
 operate. Running multiple JVMs (as opposed to a single one) on a single
 machine will inflate the amount of memory required for the whole system
 with no perceivable benefit in and of itself. If your consultant tells
 you that the garbage collector will have to work less, he or she is
 right in that each JVM will (likely) have fewer objects to deal with but
 then you've got two (or more) GCs operating on the same set of CPUs, so
 it's basically a wash.

 Since Java is greedy about memory, it's generally best to give the JVM
 as much memory as you can afford to. If you split a JVM into two JVMs,
 you're lowering the ceiling of each JVM's max memory and potentially
 opening yourself up to an OutOfMemoryError if you have certain
 operations that require lots of memory. This is a very tough thing to
 get a handle on, since any operation that could potentially take down a
 small JVM can certainly take down a big one, too. But, if the
 memory-heavy operations are relatively infrequent, or you can limit the
 number of simultaneous memory-heavy operations, you can have more of
 them running in one big heap than in two (or more) smaller ones.


The application in question is pretty damned fat. It's typical corporate
bloatware (it's an interface to Documentum). However, there aref ew
operations that are noticeably more memory intensive than others. Many parts
of the app actually rely on pushing an applet to the client. There are
several of these applets, each relatively small, and they account for about
1 in 25 transactions based on my admittedly sketchy profiling. (User
operation profiling; I have not profiled the code.)


 Monitor locks (aka synchronization) can be improved by running
 multiple JVMs. Let's say you have a shared resource that is very
 popular. One

Re: Tomcat 6 performance multiple instances

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

John,

On 12/9/2010 5:15 PM, John Goodleaf wrote:
 I agree [about benchmarking] and wish I had the time and resources to
 do it. I need to deploy on very short timelines. There actually was a
 performance testing phase budgeted, but it got killed after the
 business owner dragged her feet on requirements early in the
 project. Not that I'm bitter or anything...

So... there was a benchmarking stage planned, but it's been bagged in
favor of a consultant who simply tells you how to improve performance
without any way to verify that the improvements are accomplishing
anything?

 The application in question is pretty damned fat. It's typical corporate
 bloatware (it's an interface to Documentum). However, there are few
 operations that are noticeably more memory intensive than others. Many parts
 of the app actually rely on pushing an applet to the client. There are
 several of these applets, each relatively small, and they account for about
 1 in 25 transactions based on my admittedly sketchy profiling. (User
 operation profiling; I have not profiled the code.)

Pushing an applet to a client should be roughly equivalent to the client
downloading static content. Are you saying that those transactions are
minimal (/only/ 1 in 25) or quite frequent?

 There is a pool as you describe, and it will be a big, deep pool. The other
 edge probably applies though.

How many simultaneous requests do you expect to service at any one
point? The connection pool only needs to be (roughly) that big. Also,
you can't possibly use more db connections than the (sum of) maxActive
setting(s) on your Connector(s) in a single Tomcat instance. How big are
we talking?

The good part about synchronization on something like a db connection
pool is that only the borrow/return operations are synchronized... the
duration of the borrow is not relevant to performance -- except that
obviously connection unavailability for other requests might be an
issue. If you have a big enough pool, though, then you shouldn't be
worried about that.

 The app is fairly stable. However, it requires IE 6 or 7 (don't blame me)
 and insofar as I've seen stability problems, it has more to do with IE. In
 other words, on the vast majority of hangs/freezes/whathaveyou, the server
 logs show no problem at all. The catch is on the IE side. In any case, I
 don't anticipate crashing JVMs.

So, your clients crash but the server hums along? I guess if MSIE is the
client platform, that's the best you can do :)

(To be fair, MSIE 9 looks great... finally. It only took Microsoft 4
versions to get MSIE to be good again.)

 I'll see what I can get him to cough up. My suspicion is that he's
 repeating a formula arrived at long, long ago by a guy who doesn't work
 there any longer. I have not observed him to possess any special skills in
 the Apache/Tomcat arenas.

If he tells you to change all your StringBuffers to StringBuilders then
you know he's just wasting your time ;)

 Thanks for your well written and thoughtful response. Can I hire you as a
 consultant?

If you're serious, contact me off-list if you need anything specific.
I'm willing to give general advice for free on the list. ;)

- -chris
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Re: Tomcat 6 performance multiple instances

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Tony,

On 12/9/2010 5:15 PM, Tony Anecito wrote:
 I have done alot of work with another servlet container and your
 consultant is correct. More instances do make a difference. Mainly
 because certain resources like ports/threads and memory management
 for the heap it makes sense.

Ports shouldn't be an issue, though dispatching requests to threads
could be depending on the connector in use. Can you give us an example
of the resource contention you saw drop dramatically with a simple JVM
split?

I'm not sold on the heap: if you have two GC processes running in
parallel (that is, in separate JVMs) I'm not convinced that you are
saving yourself any CPU time. Sure, the CPU time required in a single
JVM might drop in half, but then you double the number of JVMs so you're
back where you started. What kind of GC were you using?

 But you still need to test to determine what works best.

Thank you for saying that, regardless of any other comments ;)

 I agree about the context funkyness. Been there done that. I went
 from 2 cpu to 6 cpu (AMD not Intel) and then tuned my html page size
 and that made a huge difference. My own IT group was floored by the
 performance. My web service response times are down in the 1.5msec
 range using Tomcat and APR. I used to have around 1msec but I think
 the CPU management and added cpu count caused that to happen.

Please clarify: did you simply get a bigger box and experience leaps and
bounds of performance increases, or are you saying that you got a bigger
box /and/ split into multiple JVMs? I just want to be clear... in your
first paragraph above, you said that John's consultant was right and
were very vague about why things might go faster. In the second
paragraph, you talk about upgrading memory and tweaking application
settings and /then/ the IT folks were happy with the performance
characteristics you observed. Were these two separate incidents, or was
everything together? It's just not that surprising to me that tripling
the number of CPUs would improve your webapp's performance -- though
most applications are /not/ CPU bound in my experience.

 Remember to turn off services you do not need and use NUMA and any
 other settings that might help

Using NUMA-aware GC would probably help.

 like operand compression for the 64-bit jvm if you use it.

Er, do you mean compressed OOPs? I think that will actually slow
things down, since it requires an extra ADD (more likely SHIFT)
operation to decode each OOP when referencing the associated object.

- -chris
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RE: Tomcat 6 performance multiple instances

[Caldarale, Charles R]

 From: Christopher Schultz [mailto:ch...@christopherschultz.net] 
 Subject: Re: Tomcat 6 performance  multiple instances

 I'm not sold on the heap: if you have two GC processes running in
 parallel (that is, in separate JVMs) I'm not convinced that you are
 saving yourself any CPU time. Sure, the CPU time required in a single
 JVM might drop in half, but then you double the number of JVMs so you're
 back where you started. What kind of GC were you using?

There's also the issue of doubling the number of other daemon threads the JVM 
uses internally, such as the compiler threads, finalizer, reference handler, 
etc.  They don't use much time, but they do take up resources.

I'm also very, very interested in the exact cause for the improvement observed 
with multiple JVMs using another servlet container - which may have no 
applicability to Tomcat.

 Using NUMA-aware GC would probably help.

Not available on Windows.

 Er, do you mean compressed OOPs? I think that will actually slow
 things down, since it requires an extra ADD (more likely SHIFT)
 operation to decode each OOP when referencing the associated object.

It's worse than that - the compressed OOPs are relative as well, so it's an add 
and a shift.  However, if you keep the heap size down (so that direct 32-bit 
pointers are used), that extra overhead is eliminated - but now you're 
constrained by a small heap.

 - Chuck


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Re: multiple instances on a server

[Rainer Frey]

On Saturday 28 August 2010 00:11:11 Rainer Jung wrote:
 On 27.08.2010 21:58, Wesley Acheson wrote:
  On Fri, Aug 27, 2010 at 9:41 PM, Pidp...@pidster.com  wrote:
  On 27/08/2010 18:51, Wesley Acheson wrote:
  I think the reason for doing this in ruby is that ruby is single
  threaded, I've been told. The JVM isn't.

 Adding unqualified rumors: Ruby is not single-threaded, 

Right - the language has a thread concept that can be explored as true multi-
threading by interpreters. But the original C-based ruby interpreters for do 
have a global interpreter lock that causes only one native thread to be 
running within one ruby process. This makes these interpreters effectively 
single threaded. (Ruby up to 1.8 only used 1 native thread at all, Ruby 1.9 
maps ruby threads to multiple native threads, but still has the global 
interpreter lock.)

 but the Rails
 framework has a huge lock that effectively make the biggest part of
 request handling serialized. Usually Ruby webapps are based on Rails. So
 yes, Ruby on Rails needs multiple server processes in parallel to
 effectively scale. That might be an outdated rumor though.

It is in so far outdated that Rails from 2.3 on has a threadsafe configuration 
option that enables multi-threaded request processing. This needs a multi-
threaded runtime though to make any sense. JRuby is (of course) multi-
threaded, I'm not sure if there is any other Ruby interpreter that is multi-
threaded.

 Regards,
 
 Rainer

Rainer

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multiple instances on a server

[S Ahmed]

Hi,

If you have a server with 15 GB of ram (or any large number for arguments
sake), does it ever make sense to run multiple instances of tomcat on the
same server?  (serving http requests for the same web application)

Or can a single instance utilize all the server resources just
fine efficiently?


The reason I am asking is that I have read that those hosting ruby on rails,
or python web applications usually run multiple instances of their
respective web server, each running on its own port, and then proxied using
haproxy or the like.

Re: multiple instances on a server

[Pid]

On 27/08/2010 17:57, S Ahmed wrote:
 Hi,
 
 If you have a server with 15 GB of ram (or any large number for arguments
 sake), does it ever make sense to run multiple instances of tomcat on the
 same server?  (serving http requests for the same web application)

If you have a 64bit JVM, probably not.

 Or can a single instance utilize all the server resources just
 fine efficiently?

If you have a 64bit JVM, probably.

 The reason I am asking is that I have read that those hosting ruby on rails,
 or python web applications usually run multiple instances of their
 respective web server, each running on its own port, and then proxied using
 haproxy or the like.

Each having separate resource (DB) pools, which must make managing them
a tad tricky.  Or maybe that's not a consideration...


p


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RE: multiple instances on a server

[Jeffrey Janner]

The only reasons I have ever come up with are all operations-related,
not techincal.
For example, different maintenance windows requirements get different
Tomcat instances.

 -Original Message-
 From: S Ahmed [mailto:sahmed1...@gmail.com]
 Sent: Friday, August 27, 2010 11:57 AM
 To: users@tomcat.apache.org
 Subject: multiple instances on a server
 
 Hi,
 
 If you have a server with 15 GB of ram (or any large number for
 arguments
 sake), does it ever make sense to run multiple instances of tomcat on
 the
 same server?  (serving http requests for the same web application)
 
 Or can a single instance utilize all the server resources just
 fine efficiently?
 
 
 The reason I am asking is that I have read that those hosting ruby on
 rails,
 or python web applications usually run multiple instances of their
 respective web server, each running on its own port, and then proxied
 using
 haproxy or the like.
__

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Re: multiple instances on a server

[Wesley Acheson]

I think the reason for doing this in ruby is that ruby is single
threaded, I've been told. The JVM isn't.


This is of course muddied with Jruby.


 
http://stackoverflow.com/questions/3086467/confused-are-languages-like-python-ruby-single-threaded-unlike-say-java-for

Anyway I don't see any reason you should need to install two
instances. I believe that they'll both end up running in the same JVM
also but again could be wrong.

On Fri, Aug 27, 2010 at 6:57 PM, S Ahmed sahmed1...@gmail.com wrote:
 Hi,

 If you have a server with 15 GB of ram (or any large number for arguments
 sake), does it ever make sense to run multiple instances of tomcat on the
 same server?  (serving http requests for the same web application)

 Or can a single instance utilize all the server resources just
 fine efficiently?


 The reason I am asking is that I have read that those hosting ruby on rails,
 or python web applications usually run multiple instances of their
 respective web server, each running on its own port, and then proxied using
 haproxy or the like.


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RE: multiple instances on a server

[Caldarale, Charles R]

 From: Wesley Acheson [mailto:wesley.ache...@gmail.com] 
 Subject: Re: multiple instances on a server

 I believe that they'll both end up running in the same JVM
 also but again could be wrong.

No, separate Tomcat instances would run in separate JVM instances (processes).

 - Chuck


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Re: multiple instances on a server

[Pid]

On 27/08/2010 18:51, Wesley Acheson wrote:
 I think the reason for doing this in ruby is that ruby is single
 threaded, I've been told. The JVM isn't.

I'm raising an eyebrow.

 This is of course muddied with Jruby.
 
  
 http://stackoverflow.com/questions/3086467/confused-are-languages-like-python-ruby-single-threaded-unlike-say-java-for
 
 Anyway I don't see any reason you should need to install two
 instances. I believe that they'll both end up running in the same JVM
 also but again could be wrong.

 [ ]  Correct
 [x]  Incorrect

Not unless you deliberately configure two Service instances in
server.xml.  Which would be unusual  probably self-defeating, if the
goal was separate JVMs.


p

 On Fri, Aug 27, 2010 at 6:57 PM, S Ahmed sahmed1...@gmail.com wrote:
 Hi,

 If you have a server with 15 GB of ram (or any large number for arguments
 sake), does it ever make sense to run multiple instances of tomcat on the
 same server?  (serving http requests for the same web application)

 Or can a single instance utilize all the server resources just
 fine efficiently?


 The reason I am asking is that I have read that those hosting ruby on rails,
 or python web applications usually run multiple instances of their
 respective web server, each running on its own port, and then proxied using
 haproxy or the like.

 
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Re: multiple instances on a server

[Wesley Acheson]

On Fri, Aug 27, 2010 at 9:41 PM, Pid p...@pidster.com wrote:
 On 27/08/2010 18:51, Wesley Acheson wrote:
 I think the reason for doing this in ruby is that ruby is single
 threaded, I've been told. The JVM isn't.

 I'm raising an eyebrow.


Huh?

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Re: multiple instances on a server

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Ahmed,

On 8/27/2010 12:57 PM, S Ahmed wrote:
 If you have a server with 15 GB of ram (or any large number for arguments
 sake), does it ever make sense to run multiple instances of tomcat on the
 same server?  (serving http requests for the same web application)

If you want complete isolation between the webapps, then it might make
sense to run separate instances of Tomcat. We do this in production so
we can bring one instance of Tomcat down without disturbing the others.
It also allows us to mix/match JVM and Tomcat versions between the webapps.

 Or can a single instance utilize all the server resources just
 fine efficiently?

Generally, yes. As Pid points out, you'll need a 64-bit JVM to use all
that RAM.

- -chris
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Re: multiple instances on a server

[Rainer Jung]

On 27.08.2010 21:58, Wesley Acheson wrote:

On Fri, Aug 27, 2010 at 9:41 PM, Pidp...@pidster.com  wrote:

On 27/08/2010 18:51, Wesley Acheson wrote:

I think the reason for doing this in ruby is that ruby is single
threaded, I've been told. The JVM isn't.


I'm raising an eyebrow.



Huh?


Adding unqualified rumors: Ruby is not single-threaded, but the Rails 
framework has a huge lock that effectively make the biggest part of 
request handling serialized. Usually Ruby webapps are based on Rails. So 
yes, Ruby on Rails needs multiple server processes in parallel to 
effectively scale. That might be an outdated rumor though.


Regards,

Rainer

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Multiple instances using catalina.base

[Vinicius Carvalho]

Hello there! I've followed the instructions on RUNNING.TXT and a great
presentation by Mark Thomas and Filip Hanik I've found on the net. But
after creating a directory structure:

/tomcat-6.0.20 {catalina_home}
 - bin
 - conf
 - webapps
 -work
 - temp
 - lib
 - logs
 - instance-01 {catalina_base}
  -bin
  -logs
  -conf
  -webapps
  -temp
  -work

I've just added server.xml and catalina.properties to conf, and
setenv.sh to bin of my catalina_base instance.

But after exporting the CATALINA_BASE and running startup.sh:


Using CATALINA_BASE:   /home/vinicius/java/apache-tomcat-6.0.20/instance-01
Using CATALINA_HOME:   /home/vinicius/java/apache-tomcat-6.0.20
Using CATALINA_TMPDIR: /home/vinicius/java/apache-tomcat-6.0.20/instance-01/temp
Using JRE_HOME:   /usr/lib/jvm/java-6-sun

I get this at my catalina.out

java.lang.ClassNotFoundException: org.apache.catalina.startup.Catalina
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at org.apache.catalina.startup.Bootstrap.init(Bootstrap.java:215)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:390)


Can't figure out what am I doing wrong. I don't think I need to copy lib folder.

Any ideas?

Regards

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Re: Multiple instances using catalina.base

[Jason Brittain]

Does your CATALINA_BASE's catalina.properties file have completely stock
settings?  What is common.loader set to in there?  It appears that you
have it set up right, and your startup output shows good environment
variable and Java values.  You should not need to copy the CATALINA_HOME/lib
dir into your CATALINA_BASE.

--
Jason Brittain


On Thu, Oct 1, 2009 at 11:57 AM, Vinicius Carvalho
java.vinic...@gmail.comwrote:

 Hello there! I've followed the instructions on RUNNING.TXT and a great
 presentation by Mark Thomas and Filip Hanik I've found on the net. But
 after creating a directory structure:

 /tomcat-6.0.20 {catalina_home}
  - bin
  - conf
  - webapps
  -work
  - temp
  - lib
  - logs
  - instance-01 {catalina_base}
  -bin
  -logs
  -conf
  -webapps
  -temp
  -work

 I've just added server.xml and catalina.properties to conf, and
 setenv.sh to bin of my catalina_base instance.

 But after exporting the CATALINA_BASE and running startup.sh:


 Using CATALINA_BASE:   /home/vinicius/java/apache-tomcat-6.0.20/instance-01
 Using CATALINA_HOME:   /home/vinicius/java/apache-tomcat-6.0.20
 Using CATALINA_TMPDIR:
 /home/vinicius/java/apache-tomcat-6.0.20/instance-01/temp
 Using JRE_HOME:   /usr/lib/jvm/java-6-sun

 I get this at my catalina.out

 java.lang.ClassNotFoundException: org.apache.catalina.startup.Catalina
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at org.apache.catalina.startup.Bootstrap.init(Bootstrap.java:215)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:390)


 Can't figure out what am I doing wrong. I don't think I need to copy lib
 folder.

 Any ideas?

 Regards

Do multiple Hosts force multiple instances of webapps?

[Ken Bowen]

[Feels like a newbie question, but I don't know the anwser.]

I have a web app (myapp) which has its context.xml in META-INF.

When I run it on a local vanilla Tomcat 6.0.18 (Apache download) with  
the standard unzipped
server.xml, only one instance of myapp is started (as observed in  
catalina.out).


I have a Tomcat 6.0.18 running on a CentOS 5 Linux on a remote hosting  
service.

(Actually running in a Parallels virtual VPS.)
That system has two hosts in the server.xml (set up by the remote  
hosting service) as follows:


  Host name=localhost  appBase=webapps
unpackWARs=true autoDeploy=true
xmlValidation=false xmlNamespaceAware=false
  /Host

  Host appBase=webapps name=mydomain.com unpackWARs=true  
autoDeploy=true

  Aliaswww.mydomain.com/Alias
  Alias123.123.123.123/Alias
  /Host

Note that they share the appBase.
When I drop myapp.war in webapps, and observe catalina.out, I see that  
it is started twice.

I assume that this is the expected behavior?

And so then the question is:  In a remote hosting setting like this,  
what is the purpose
of the localhost Host: Host name=localhost Do I need this  
at all?
Maybe it was just cruft left lying around by the person who set things  
up?


I certainly want to avoid two copies of myapp running.

Thanks in advance
Ken


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RE: Do multiple Hosts force multiple instances of webapps?

[Caldarale, Charles R]

 From: Ken Bowen [mailto:kbo...@als.com]
 Subject: Do multiple Hosts force multiple instances of webapps?

 Note that they share the appBase.

Which can lead to interesting events when updating on the fly.

 When I drop myapp.war in webapps, and observe catalina.out, I see that
 it is started twice. I assume that this is the expected behavior?

Yes; there's a separate classloader created for each Host/Context 
combination.

 And so then the question is:  In a remote hosting setting 
 like this, what is the purpose of the localhost Host: 
 Host name=localhost 

You might well ask what's the purpose of the other Host with the domain name. 
 You really only need one, and its name is irrelevant, as long as that name 
appears on the defaultHost attribute of the Engine.

Multiple Host elements are useful when you really are serving separate, 
multiple domains.

 - Chuck


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Re: Do multiple Hosts force multiple instances of webapps?

[André Warnier]

Ken Bowen wrote:

[Feels like a newbie question, but I don't know the anwser.]

I have a web app (myapp) which has its context.xml in META-INF.

When I run it on a local vanilla Tomcat 6.0.18 (Apache download) with 
the standard unzipped
server.xml, only one instance of myapp is started (as observed in 
catalina.out).


I have a Tomcat 6.0.18 running on a CentOS 5 Linux on a remote hosting 
service.

(Actually running in a Parallels virtual VPS.)
That system has two hosts in the server.xml (set up by the remote 
hosting service) as follows:


  Host name=localhost  appBase=webapps
unpackWARs=true autoDeploy=true
xmlValidation=false xmlNamespaceAware=false
  /Host

  Host appBase=webapps name=mydomain.com unpackWARs=true 
autoDeploy=true

  Aliaswww.mydomain.com/Alias
  Alias123.123.123.123/Alias
  /Host

Note that they share the appBase.
When I drop myapp.war in webapps, and observe catalina.out, I see that 
it is started twice.

I assume that this is the expected behavior?

And so then the question is:  In a remote hosting setting like this, 
what is the purpose
of the localhost Host: Host name=localhost Do I need this at 
all?

Maybe it was just cruft left lying around by the person who set things up?


It is the standard server.xml setting, and normally it is enough, because...

The first Host defined is the default host.  Any request that comes 
in to this server on a part on which Tomcat is listening, and whose 
Host: header does not match any other Host name=... tag, will be 
handled by that default host.
In other words, if you have only that first Host tag, then it will 
handle all requests.


Because you have a second Host tag defined, now you have two (virtual) 
hosts. Your Host #2 now matches all requests for mydomain.com, 
www.mydomain.com and 123.123.123.123.
Your first Host still matches all requests addresses to localhost, 
and all the ones not matched by your Host #2.

(Because it is still the default host).

To make a longer story shorter, just do this :
- remove the second Host
- add 3 aliases to the first localhost Host :
   Aliaswww.mydomain.com/Alias
   Alias123.123.123.123/Alias
Aliasmydomain.com/Alias





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Re: Do multiple Hosts force multiple instances of webapps?

[André Warnier]

André Warnier wrote:

Ken Bowen wrote:

[Feels like a newbie question, but I don't know the anwser.]

I have a web app (myapp) which has its context.xml in META-INF.

When I run it on a local vanilla Tomcat 6.0.18 (Apache download) with 
the standard unzipped
server.xml, only one instance of myapp is started (as observed in 
catalina.out).


I have a Tomcat 6.0.18 running on a CentOS 5 Linux on a remote hosting 
service.

(Actually running in a Parallels virtual VPS.)
That system has two hosts in the server.xml (set up by the remote 
hosting service) as follows:


  Host name=localhost  appBase=webapps
unpackWARs=true autoDeploy=true
xmlValidation=false xmlNamespaceAware=false
  /Host

  Host appBase=webapps name=mydomain.com unpackWARs=true 
autoDeploy=true

  Aliaswww.mydomain.com/Alias
  Alias123.123.123.123/Alias
  /Host

Note that they share the appBase.
When I drop myapp.war in webapps, and observe catalina.out, I see that 
it is started twice.

I assume that this is the expected behavior?

And so then the question is:  In a remote hosting setting like this, 
what is the purpose
of the localhost Host: Host name=localhost Do I need this 
at all?
Maybe it was just cruft left lying around by the person who set things 
up?


It is the standard server.xml setting, and normally it is enough, 
because...


The first Host defined is the default host.  Any request that comes 
in to this server on a part on which Tomcat is listening, and whose 
Host: header does not match any other Host name=... tag, will be 
handled by that default host.
In other words, if you have only that first Host tag, then it will 
handle all requests.


Because you have a second Host tag defined, now you have two (virtual) 
hosts. Your Host #2 now matches all requests for mydomain.com, 
www.mydomain.com and 123.123.123.123.
Your first Host still matches all requests addresses to localhost, 
and all the ones not matched by your Host #2.

(Because it is still the default host).

To make a longer story shorter, just do this :
- remove the second Host
- add 3 aliases to the first localhost Host :
Aliaswww.mydomain.com/Alias
Alias123.123.123.123/Alias
Aliasmydomain.com/Alias

Of course, as Charles pointed out, these 3 aliases are totally 
superfluous, for the reason I myself outlined above. Duh..

Time to go to bed here too.

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RE: Do multiple Hosts force multiple instances of webapps?

[Caldarale, Charles R]

 From: André Warnier [mailto:a...@ice-sa.com]
 Subject: Re: Do multiple Hosts force multiple instances of webapps?
 
 The first Host defined is the default host.

No - the defaultHost is the defined by the defaultHost attribute of the 
Engine.  It can be any of the Host elements.

 To make a longer story shorter, just do this :
 - remove the second Host
 - add 3 aliases to the first localhost Host :
 Aliaswww.mydomain.com/Alias
 Alias123.123.123.123/Alias
  Aliasmydomain.com/Alias

Or, just use one Host and no aliases.  What you're suggesting is 
unnecessarily complex and serves no real purpose.

 - Chuck


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Re: Do multiple Hosts force multiple instances of webapps?

[Ken Bowen]

Thanks!   To both Chuck  Andre.
Not only does the simple solution work, but I understand a tiny bit  
more.


Have a good night.
Ken

On Apr 7, 2009, at 7:20 PM, Caldarale, Charles R wrote:


From: André Warnier [mailto:a...@ice-sa.com]
Subject: Re: Do multiple Hosts force multiple instances of webapps?

The first Host defined is the default host.


No - the defaultHost is the defined by the defaultHost attribute of  
the Engine.  It can be any of the Host elements.



To make a longer story shorter, just do this :
- remove the second Host
- add 3 aliases to the first localhost Host :

 Aliaswww.mydomain.com/Alias
 Alias123.123.123.123/Alias

Aliasmydomain.com/Alias


Or, just use one Host and no aliases.  What you're suggesting is  
unnecessarily complex and serves no real purpose.


- Chuck


THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE  
PROPRIETARY MATERIAL and is thus for use only by the intended  
recipient. If you received this in error, please contact the sender  
and delete the e-mail and its attachments from all computers.



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RE: Installing Multiple Instances on Windows Server 2003

[Steve G.B.]

Found the issue.

I just needed a for cicle with millions of loops.

There was only kernel calls that saturated CPU till 45-50%.
A resource was waiting something. Don't know if it was the HDD or the
network.

I have to check.
Thanks for the tip, Peter :)



Peter Crowther wrote:
 
 From: Steve G.B. [mailto:[EMAIL PROTECTED]
 I've created a VM with 4 VCores, and all of the cores are
 allocated to the VM.
 
 OK, so 50% CPU = 2 cores maxed out.  Out of interest, is it 25% with only
 one Tomcat started?
 
 I'm using Sun JVM 1.6, and stressing the Guest with
 Loadrunner on another
 machine (if you ask: this machine with loadrunner isn't the
 bottleneck)

 No Databases, no I/O requests, no Network saturation.
 
 OK.
 
 Given that you're getting exactly 50% CPU use (it *is* exact, right?) that
 indicates the test harness is very unlikely to be the problem.  It would
 almost certainly bottleneck at some other CPU value.
 
 that's why I think it's the JVM.
 For my tests I used the standard demo webapp in Loarunner
 (Mercury Tours),
 and a couple of stupid jsp pages. So Apache and Tomcat both.
 
 I'll highlight that to the folks who know the demo app better: does it run
 properly under load?  I'd assume so...
 
 Fun thing is that when using Tomcat and Apache combined, I
 can get an 80-85% CPU Utilization.
 
 Yes.  If you've got httpd passing everything through it as well, you'll
 increase the CPU load - that's expected!
 
 Problem is that for my tests I need
 something more simple and the same server.
 
 Yes.  Why add complexity when it's not required? :-)
 
 How do you saturate an 8-core host?
 
 With some reasonably complex code in the JSPs :-).  Out of interest, if
 your JSPs call something that loops a couple of million times before
 returning, what happens to the CPU use?
 
 - Peter
 
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Installing Multiple Instances on Windows Server 2003

[Steve G.B.]

Hi,

I need to install multiple instances of Tomcat on my server.

I changed all the connection and redirect ports, but the second Tomcat still
doesn't start.

What should I do?

Thank you,

Steve
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Re: Installing Multiple Instances on Windows Server 2003

[bhooshanpandit]

Can you post the error that it spits out while starting up?


-Original Message-
From: Steve G.B. [EMAIL PROTECTED]
To: users@tomcat.apache.org
Sent: Tue, 2 Sep 2008 3:49 pm
Subject: Installing Multiple Instances on Windows Server 2003











Hi,

I need to install multiple instances of Tomcat on my server.

I changed all the connection and redirect ports, but the second Tomcat 
still

doesn't start.

What should I do?

Thank you,

Steve
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RE: Installing Multiple Instances on Windows Server 2003

[Peter Crowther]

 From: Steve G.B. [mailto:[EMAIL PROTECTED]
 I need to install multiple instances of Tomcat on my server.

 I changed all the connection and redirect ports, but the
 second Tomcat still
 doesn't start.

 What should I do?

Give us more information - that's far too vague for us to help you.

Post:
- Tomcat versions;
- Any error messages you get in either set of logs while starting Tomcat.

Also: If you start the two services in the opposite order, which one fails?  Is 
it always one instance of Tomcat (in which case you should be looking for 
config errors in that Tomcat) or is it always the second one started (in which 
case you should be looking for contention issues)?

- Peter

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Re: Installing Multiple Instances on Windows Server 2003

[Steve G.B.]

in catalina.log I have this:

Sep 2, 2008 12:34:44 PM org.apache.catalina.core.StandardServer await
SEVERE: StandardServer.await: create[8005]: 
java.net.BindException: Address already in use: JVM_Bind
at java.net.PlainSocketImpl.socketBind(Native Method)
at java.net.PlainSocketImpl.bind(Unknown Source)
at java.net.ServerSocket.bind(Unknown Source)
at java.net.ServerSocket.init(Unknown Source)
at 
org.apache.catalina.core.StandardServer.await(StandardServer.java:373)
at org.apache.catalina.startup.Catalina.await(Catalina.java:642)
at org.apache.catalina.startup.Catalina.start(Catalina.java:602)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Sep 2, 2008 12:34:44 PM org.apache.coyote.http11.Http11AprProtocol pause
INFO: Pausing Coyote HTTP/1.1 on http-8080
Sep 2, 2008 12:34:44 PM org.apache.coyote.ajp.AjpAprProtocol pause
INFO: Pausing Coyote AJP/1.3 on ajp-8009
Sep 2, 2008 12:34:45 PM org.apache.catalina.core.StandardService stop
INFO: Stopping service Catalina


the problem is:

I have Tomcat 6.0 on Connection port 8080 and redirect port 8443. AJP port
is 8009 (standard installation ports)
I then have Tomcat 4.1 on Connection port 8083 and redirect port 8447. AJP
is 8011.

Still it logs me there's an address already in use.


bhooshanpandit wrote:
 
 Can you post the error that it spits out while starting up?
 
 
 -Original Message-
 From: Steve G.B. [EMAIL PROTECTED]
 To: users@tomcat.apache.org
 Sent: Tue, 2 Sep 2008 3:49 pm
 Subject: Installing Multiple Instances on Windows Server 2003
 
 
 
 
 
 
 
 
 
 
 
 Hi,
 
 I need to install multiple instances of Tomcat on my server.
 
 I changed all the connection and redirect ports, but the second Tomcat 
 still
 doesn't start.
 
 What should I do?
 
 Thank you,
 
 Steve
 --
 View this message in context: 
 http://www.nabble.com/Installing-Multiple-Instances-on-Windows-Server-2003-tp19267576p19267576.html
 Sent from the Tomcat - User mailing list archive at Nabble.com.
 
 
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 To start a new topic, e-mail: users@tomcat.apache.org
 To unsubscribe, e-mail: [EMAIL PROTECTED]
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RE: Installing Multiple Instances on Windows Server 2003

[Steve G.B.]

I posted logs and ports in the other reply.

Here I can tell you that the first service started is running quite good,
the seconds starts and then crashes.


Peter Crowther wrote:
 
 From: Steve G.B. [mailto:[EMAIL PROTECTED]
 I need to install multiple instances of Tomcat on my server.

 I changed all the connection and redirect ports, but the
 second Tomcat still
 doesn't start.

 What should I do?
 
 Give us more information - that's far too vague for us to help you.
 
 Post:
 - Tomcat versions;
 - Any error messages you get in either set of logs while starting Tomcat.
 
 Also: If you start the two services in the opposite order, which one
 fails?  Is it always one instance of Tomcat (in which case you should be
 looking for config errors in that Tomcat) or is it always the second one
 started (in which case you should be looking for contention issues)?
 
 - Peter
 
 -
 To start a new topic, e-mail: users@tomcat.apache.org
 To unsubscribe, e-mail: [EMAIL PROTECTED]
 For additional commands, e-mail: [EMAIL PROTECTED]
 
 
 

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Re: Installing Multiple Instances on Windows Server 2003

[bhooshanpandit]

The error clearly indicates that something is running on port 8080. 
It's not the other tomcat but probably some other process.. if you 
have oracle it's app server runs on 8080 by default


Try changing the connector and redirector ports to non default values 
(say 18080 and 18443) and see if it works.



-Original Message-
From: Steve G.B. [EMAIL PROTECTED]
To: users@tomcat.apache.org
Sent: Tue, 2 Sep 2008 4:10 pm
Subject: Re: Installing Multiple Instances on Windows Server 2003











in catalina.log I have this:

Sep 2, 2008 12:34:44 PM org.apache.catalina.core.StandardServer await
SEVERE: StandardServer.await: create[8005]:
java.net.BindException: Address already in use: JVM_Bind
   at java.net.PlainSocketImpl.socketBind(Native Method)
   at java.net.PlainSocketImpl.bind(Unknown Source)
   at java.net.ServerSocket.bind(Unknown Source)
   at java.net.ServerSocket.init(Unknown Source)
at 
org.apache.catalina.core.StandardServer.await(StandardServer.java:373)

   at org.apache.catalina.startup.Catalina.await(Catalina.java:642)
   at org.apache.catalina.startup.Catalina.start(Catalina.java:602)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
   at java.lang.reflect.Method.invoke(Unknown Source)
   at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
   at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Sep 2, 2008 12:34:44 PM org.apache.coyote.http11.Http11AprProtocol pause
INFO: Pausing Coyote HTTP/1.1 on http-8080
Sep 2, 2008 12:34:44 PM org.apache.coyote.ajp.AjpAprProtocol pause
INFO: Pausing Coyote AJP/1.3 on ajp-8009
Sep 2, 2008 12:34:45 PM org.apache.catalina.core.StandardService stop
INFO: Stopping service Catalina


the problem is:

I have Tomcat 6.0 on Connection port 8080 and redirect port 8443. AJP 
port

is 8009 (standard installation ports)
I then have Tomcat 4.1 on Connection port 8083 and redirect port 8447. 
AJP

is 8011.

Still it logs me there's an address already in use.


bhooshanpandit wrote:


Can you post the error that it spits out while starting up?


-Original Message-
From: Steve G.B. [EMAIL PROTECTED]
To: users@tomcat.apache.org
Sent: Tue, 2 Sep 2008 3:49 pm
Subject: Installing Multiple Instances on Windows Server 2003











Hi,

I need to install multiple instances of Tomcat on my server.

I changed all the connection and redirect ports, but the second 

Tomcat

still
doesn't start.

What should I do?

Thank you,

Steve
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Re: Installing Multiple Instances on Windows Server 2003

[Steve G.B.]

Ok got it.

It was the server port 8005 that should be changed.

Thank you!


bhooshanpandit wrote:
 
 The error clearly indicates that something is running on port 8080. 
 It's not the other tomcat but probably some other process.. if you 
 have oracle it's app server runs on 8080 by default
 
 Try changing the connector and redirector ports to non default values 
 (say 18080 and 18443) and see if it works.
 
 
 -Original Message-
 From: Steve G.B. [EMAIL PROTECTED]
 To: users@tomcat.apache.org
 Sent: Tue, 2 Sep 2008 4:10 pm
 Subject: Re: Installing Multiple Instances on Windows Server 2003
 
 
 
 
 
 
 
 
 
 
 
 in catalina.log I have this:
 
 Sep 2, 2008 12:34:44 PM org.apache.catalina.core.StandardServer await
 SEVERE: StandardServer.await: create[8005]:
 java.net.BindException: Address already in use: JVM_Bind
 at java.net.PlainSocketImpl.socketBind(Native Method)
 at java.net.PlainSocketImpl.bind(Unknown Source)
 at java.net.ServerSocket.bind(Unknown Source)
 at java.net.ServerSocket.init(Unknown Source)
  at 
 org.apache.catalina.core.StandardServer.await(StandardServer.java:373)
 at org.apache.catalina.startup.Catalina.await(Catalina.java:642)
 at org.apache.catalina.startup.Catalina.start(Catalina.java:602)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
 at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
 Sep 2, 2008 12:34:44 PM org.apache.coyote.http11.Http11AprProtocol pause
 INFO: Pausing Coyote HTTP/1.1 on http-8080
 Sep 2, 2008 12:34:44 PM org.apache.coyote.ajp.AjpAprProtocol pause
 INFO: Pausing Coyote AJP/1.3 on ajp-8009
 Sep 2, 2008 12:34:45 PM org.apache.catalina.core.StandardService stop
 INFO: Stopping service Catalina
 
 
 the problem is:
 
 I have Tomcat 6.0 on Connection port 8080 and redirect port 8443. AJP 
 port
 is 8009 (standard installation ports)
 I then have Tomcat 4.1 on Connection port 8083 and redirect port 8447. 
 AJP
 is 8011.
 
 Still it logs me there's an address already in use.
 
 
 bhooshanpandit wrote:

 Can you post the error that it spits out while starting up?


 -Original Message-
 From: Steve G.B. [EMAIL PROTECTED]
 To: users@tomcat.apache.org
 Sent: Tue, 2 Sep 2008 3:49 pm
 Subject: Installing Multiple Instances on Windows Server 2003











 Hi,

 I need to install multiple instances of Tomcat on my server.

 I changed all the connection and redirect ports, but the second 
 Tomcat
 still
 doesn't start.

 What should I do?

 Thank you,

 Steve
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Re: Installing Multiple Instances on Windows Server 2003

[Steve G.B.]

I have another question.

I'm trying to overload the Virtual Machine on which I've installed the two
Tomcats.
But I can't exceed a 50% of CPU Utilization.

I believe it's a JVM limitation. Is there a way to change jvm configurations
in order, for example, to create even more threads?


Thank you!
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RE: Installing Multiple Instances on Windows Server 2003

[Peter Crowther]

 From: Steve G.B. [mailto:[EMAIL PROTECTED]
 I'm trying to overload the Virtual Machine on which I've
 installed the two Tomcats.

To check: this is a virtual computer (on a physical host computer) running a 
virtual operating system on which you are running two copies of Tomcat in two 
separate Java virtual machines?

 But I can't exceed a 50% of CPU Utilization.

How many virtual cores have you set up?  How many physical cores on the host 
computer do you have?  How many of those are allocated to the virtual computer?

 I believe it's a JVM limitation.

What JVM are you using?  If it's a Sun one, I don't believe you ;-).  I've 
saturated 8-core processors on 1.4 and 1.5 with no issues; I can't see that 
having regressed in 1.6, although I don't have personal experience.

 Is there a way to change jvm configurations
 in order, for example, to create even more threads?

Depends on your JVM.  But I'm willing to bet that the bottleneck is in one or 
more of:
- Your test harness;
- Your web app (do all the threads access a common object?);
- A library you're using that single-threads;
- Your back-end systems, such as your database server.

- Peter

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RE: Installing Multiple Instances on Windows Server 2003

[Steve G.B.]

It's a Quad Core Intel Xeon with 4GB of RAM and ESX running on it.

I've created a VM with 4 VCores, and all of the cores are allocated to the
VM.

I'm using Sun JVM 1.6, and stressing the Guest with Loadrunner on another
machine (if you ask: this machine with loadrunner isn't the bottleneck)

No Databases, no I/O requests, no Network saturation.

that's why I think it's the JVM.
For my tests I used the standard demo webapp in Loarunner (Mercury Tours),
and a couple of stupid jsp pages. So Apache and Tomcat both. 

Fun thing is that when using Tomcat and Apache combined, I can get an 80-85%
CPU Utilization. Problem is that for my tests I need something more simple
and the same server.

So today I've installed the second Tomcat running calling the same jsp page
of the other.

No think time set.

How do you saturate an 8-core host?

Please help me :)

Stefano


Peter Crowther wrote:
 
 From: Steve G.B. [mailto:[EMAIL PROTECTED]
 I'm trying to overload the Virtual Machine on which I've
 installed the two Tomcats.
 
 To check: this is a virtual computer (on a physical host computer) running
 a virtual operating system on which you are running two copies of Tomcat
 in two separate Java virtual machines?
 
 But I can't exceed a 50% of CPU Utilization.
 
 How many virtual cores have you set up?  How many physical cores on the
 host computer do you have?  How many of those are allocated to the virtual
 computer?
 
 I believe it's a JVM limitation.
 
 What JVM are you using?  If it's a Sun one, I don't believe you ;-).  I've
 saturated 8-core processors on 1.4 and 1.5 with no issues; I can't see
 that having regressed in 1.6, although I don't have personal experience.
 
 Is there a way to change jvm configurations
 in order, for example, to create even more threads?
 
 Depends on your JVM.  But I'm willing to bet that the bottleneck is in one
 or more of:
 - Your test harness;
 - Your web app (do all the threads access a common object?);
 - A library you're using that single-threads;
 - Your back-end systems, such as your database server.
 
 - Peter
 
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 To start a new topic, e-mail: users@tomcat.apache.org
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RE: Installing Multiple Instances on Windows Server 2003

[Peter Crowther]

 From: Steve G.B. [mailto:[EMAIL PROTECTED]
 I've created a VM with 4 VCores, and all of the cores are
 allocated to the VM.

OK, so 50% CPU = 2 cores maxed out.  Out of interest, is it 25% with only one 
Tomcat started?

 I'm using Sun JVM 1.6, and stressing the Guest with
 Loadrunner on another
 machine (if you ask: this machine with loadrunner isn't the
 bottleneck)

 No Databases, no I/O requests, no Network saturation.

OK.

Given that you're getting exactly 50% CPU use (it *is* exact, right?) that 
indicates the test harness is very unlikely to be the problem.  It would almost 
certainly bottleneck at some other CPU value.

 that's why I think it's the JVM.
 For my tests I used the standard demo webapp in Loarunner
 (Mercury Tours),
 and a couple of stupid jsp pages. So Apache and Tomcat both.

I'll highlight that to the folks who know the demo app better: does it run 
properly under load?  I'd assume so...

 Fun thing is that when using Tomcat and Apache combined, I
 can get an 80-85% CPU Utilization.

Yes.  If you've got httpd passing everything through it as well, you'll 
increase the CPU load - that's expected!

 Problem is that for my tests I need
 something more simple and the same server.

Yes.  Why add complexity when it's not required? :-)

 How do you saturate an 8-core host?

With some reasonably complex code in the JSPs :-).  Out of interest, if your 
JSPs call something that loops a couple of million times before returning, what 
happens to the CPU use?

- Peter

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Tomcat 5.0.27 multiple instances in Solaris

[sridharmnj]

Hi,

I have a working tomcat5.0.27 in /export/ae/tomcat5.027 folder. (os is
solaris)
Now I am creating one more tomcat instance. So, I created one directory
Instance1 in /export/ae/tomcat5.0.27 folder and copied conf, logs, temp,
webapps, work folders.
I also modified port nubmers 8080, 8005, 8009 to 9080, 9005, 9009.
I tried to start Instance1 using the following command.
/export/ae/tomcat5.0.27/bin startup.sh
-Dcatalina.base=/export/ae/tomcat5.0.27/Instance1.

But, its starting the old server (8080) only. Could any one please guide me
in right direction, how to start and stop the new instance. I appreciate
your help.

Thanks,
Sridhar

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Re: Tomcat 5.0.27 multiple instances in Solaris

[Steve Ochani]

Date sent:  Thu, 17 Jul 2008 15:30:33 -0700 (PDT)
From:   sridharmnj [EMAIL PROTECTED]
Subject:Tomcat 5.0.27 multiple instances in Solaris
To: users@tomcat.apache.org
Send reply to:  Tomcat Users List users@tomcat.apache.org

 
 Hi,
 
 I have a working tomcat5.0.27 in /export/ae/tomcat5.027 folder. (os is
 solaris) Now I am creating one more tomcat instance. So, I created one
 directory Instance1 in /export/ae/tomcat5.0.27 folder and copied
 conf, logs, temp, webapps, work folders. I also modified port nubmers
 8080, 8005, 8009 to 9080, 9005, 9009. I tried to start Instance1 using
 the following command. /export/ae/tomcat5.0.27/bin startup.sh
 -Dcatalina.base=/export/ae/tomcat5.0.27/Instance1.
 

Copy the entire /export/ae/tomcat5.027 dir. to another separate dir, not a 
subdir. and then 
change the ports and use its startup.sh.


-Steve O.




 

 But, its starting the old server (8080) only. Could any one please
 guide me in right direction, how to start and stop the new instance. I
 appreciate your help.
 
 Thanks,
 Sridhar
 
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 at Nabble.com.
 
 
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Re: Tomcat 5.0.27 multiple instances in Solaris

[sridharmnj]

Hi Steve,

Thanks for your guidence.

Yes, I can do that. But copying the entire tomcat folder means, it needs
multiple binarys (bin folder). Somewhere in forums I read that there is way
to work with single binary and multiple tomcat instances.

Actually, my current tomcat server serving for 10 different sites, If I
chose to copy tomcat binary 10 times, it may consume resources.

Do you suggest to use individual binary for each site or is it better to
have a single binary with multiple tomcat instances.

If yes, Could you please point me, what are advantages to use multiple
binaries insted of single binary with multiple instances.

Thanks,
Sridhar


Steve Ochani wrote:
 
 Date sent:Thu, 17 Jul 2008 15:30:33 -0700 (PDT)
 From: sridharmnj [EMAIL PROTECTED]
 Subject:  Tomcat 5.0.27 multiple instances in Solaris
 To:   users@tomcat.apache.org
 Send reply to:Tomcat Users List users@tomcat.apache.org
 
 
 Hi,
 
 I have a working tomcat5.0.27 in /export/ae/tomcat5.027 folder. (os is
 solaris) Now I am creating one more tomcat instance. So, I created one
 directory Instance1 in /export/ae/tomcat5.0.27 folder and copied
 conf, logs, temp, webapps, work folders. I also modified port nubmers
 8080, 8005, 8009 to 9080, 9005, 9009. I tried to start Instance1 using
 the following command. /export/ae/tomcat5.0.27/bin startup.sh
 -Dcatalina.base=/export/ae/tomcat5.0.27/Instance1.
 
 
 Copy the entire /export/ae/tomcat5.027 dir. to another separate dir, not a
 subdir. and then 
 change the ports and use its startup.sh.
 
 
 -Steve O.
 
 
 
 
  
 
 But, its starting the old server (8080) only. Could any one please
 guide me in right direction, how to start and stop the new instance. I
 appreciate your help.
 
 Thanks,
 Sridhar
 
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 519218p18519218.html Sent from the Tomcat - User mailing list archive
 at Nabble.com.
 
 
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Re: Tomcat 5.0.27 multiple instances in Solaris

[Charles Caldarale]

 Somewhere in forums I read that
 there is way to work with single
 binary and multiple tomcat
 instances.

Read the RUNNING.txt file that's in the Tomcat home directory.

 Actually, my current tomcat server
 serving for 10 different sites,

Why don't you use Tomcat's virtual host capability (multiple Host  
elements) and only run one copy of Tomcat?


BTW, 5.0.27 is no longer supported; you might want to consider moving  
up.


 - Chuck


























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Re: multiple instances and context roots

[tom_goring]

Thanks for the info Guys.

I'm already using proxy forwarding but it is not really acceptable for
production env's (e.g. you loose the clients IP, error handling is not as
good, etc).  

I'm after a simple setting that appends a prefix on the URI so a WAR dropped
in webapp's dir is prefixed with dev/test/etc.  Does not look like there is
one though.

Again my setup is:

https://www.myserver.com/test/WebApp/test.jsp maps to using mod_jk
http://www.myserver.com:8181/test/WebApp/test.jsp 

https://www.myserver.com/dev/WebApp/test.jsp maps to using mod_jk
http://www.myserver.com:8182/dev/WebApp/test.jsp

Any other ideas?

Thanks in advance.




Johnny Kewl wrote:
 
 
 - Original Message - 
 From: Johnny Kewl [EMAIL PROTECTED]
 To: Tomcat Users List users@tomcat.apache.org
 Sent: Thursday, June 26, 2008 3:15 PM
 Subject: Re: multiple instances and context roots
 
 

 - Original Message - 
 From: tom_goring [EMAIL PROTECTED]
 To: users@tomcat.apache.org
 Sent: Thursday, June 26, 2008 12:09 PM
 Subject: multiple instances and context roots



 Hi,

 I've posted this on the jboss forum but had no response... it's really a
 tomcat question.

 jboss-4.2.2 (not sure of the tomcat version used)

 I have several jboss installs running behind apache using mod_jk (dev, 
 test,
 production, etc)

 I can't use virtual hosts as all my instances require SSL and this is 
 only
 set up for 1 domain. Each instance runs on it's own ports.

 I want a simple way to tell each jboss/tomcat instance to use a
 reliative
 context.

 E.g.

 https://www.myserver.com/dev/MYAPP/hello.jsp
 https://www.myserver.com/test/MYAPP/hello.jsp

 I.e. I want to know where I can set dev/test, etc.

 I don't really want to change the application.xml (context-root) for
 each
 EAR file when installed (as that would require rebuilding the EAR 
 dependent
 on the instance).

 Ideas ?

 Tom, I have no knowledge of Jboss... we dont use EJB at all, so I'm just 
 going to tell you what TC does to get sub contexts, and then you on your 
 own.

 Say you want /dev/MyApp
 The context file name in conf/host  becomes

 dev#MyApp.xml

 The path in the context file becomes

 path=/dev/MyApp/

 And in webapps folder it becomes

 /dev/The UnPacked Webapp

 Deployment is not possible by dropping a war into tomcat... the war must 
 not be there, else TC will auto deploy and mess up your config.

 Then I guess JkMount /dev/*  theWorker.  may work...

 And hopefully nothing in those apps is hardcoded... like URI's in jsp 
 pages etc.
 And EJB is still happy...

 Some really creative guy Alex Mestiashvili showed us a way (unrelated) to 
 map different IP's to different webapps a while back using a reverse
 proxy 
 and some other incredible rewrite stuff that Apache can do... JK works on 
 relative uri's, but I think its worth a bash asking the Apached guys if 
 one cant map

 https://www.myserver.com/dev/MYAPP/hello.jsp
 https://www.myserver.com/test/MYAPP/hello.jsp

 to

 https://www.myserver.com:8080/MYAPP/hello.jsp
 https://www.myserver.com:8081/MYAPP/hello.jsp

 etc...

 Or something even more creative... ie try get apache to present TC/JBoss 
 with something it likes...
 Maybe mod proxy has a few tricks that jk does not... worth getting into 
 the Httpd mailing list and asking, I think.
 JK is terrific at load balancing, but you just trying to use it as a kind 
 of gateway... Apached is probably good at that.

 Good luck sorry cant be more helpful

 ---
 HARBOR : http://www.kewlstuff.co.za/index.htm
 The most powerful application server on earth.
 The only real POJO Application Server.
 See it in Action : http://www.kewlstuff.co.za/cd_tut_swf/whatisejb1.htm
 ---
 
 After Thought...
 Been thinking about the idea of mapping
 
  https://www.myserver.com/dev/MYAPP/hello.jsp
  https://www.myserver.com/prod/MYAPP/hello.jsp
 
  to
 
  https://www.myserver.com:8080/MYAPP/hello.jsp
 https://www.myserver.com:8081/MYAPP/hello.jsp
 
 asked the Apache guys... maybe there is a guru out there with an alt plan, 
 but I think it needs planning when making the WebApp
 This will map incoming requests
 
 ProxyRequests Off
 
 Proxy *
 Order deny,allow
 Allow from all
 /Proxy
 
 ProxyPass /dev http://localhost:8080
 ProxyPassReverse /dev http://localhost:8080
 
 ProxyPass /prod http://localhost:8081
 ProxyPassReverse /prod http://localhost:8081
 
 but the problem is that the actual links on your pages are going to still
 be
 
 http://www.myserver.com/MYAPP/hello.jsp
 
 so... one would have to plan for it and have say a context parameter that 
 one could also set... so that it adjusts
 page urls to /dev/MYAPP
 
 The above mod proxy stuff... does this maps
 
 domain/dev/MyApp
 to
 localhost:8080/MyApp
 
 so the incoming is adjusted... which leaves getting your own links
 right... 
 so maybe TC sub contexts and JK