Re: How to set apache load balancer for send request to 6 tomcat server

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

Giancarlo,

On 12/30/19 12:11, Giancarlo Celli wrote:
> Hi Chris, to avoid any kind of overload, I would like every single
> request to be forwarded to a backend server.

Session stickiness only determines WHICH backend server your request
will be routed to. If your session gets mapped to a server which has
failed, that request will fail-over to another server.

The advantage to sticky-sessions is two-fold:

1. When not clustering and user-sessions are required (i.e. for
login), then sticky-sessions are REQUIRED

2. When clustering sessions, sticky-sessions are also REQUIRED to
ensure that the same session object is being used for all requests,
limiting the possibility of race-conditions. There is no cross-cluster
synchronization to prevent simultaneous access to the same session on
two different nodes.

I can't really see a use-case for NOT using sticky-sessions unless you
have HUGE, bursty-load and the contents of the session aren't very
important. (Or you are using a non-standard session-manager.)

> I attach the files again hoping you can view them correctly. I
> await your suggestions.

A few thoughts:

> worker.node1.ping_mode=P

This will cause a ping to be sent for every request, but no periodic
checks will be made. It probably doesn't matter much, but you may want
to start with ping_mode=A and reduce the frequency if you observe any
performance problems.

> worker.node1.ping_timeout=1

10s is a long time. Do you want to wait 10s for a request to fail-over
to another server?

> worker.node1.lbfactor=1 worker.node1.socket_timeout=30

Same here: 30s is a long time. You may wait 30 seconds for a back-end
server to fail to respond to a request. Or maybe you have some
requests you expect to take as much as 30 seconds?

> worker.node1.connection_pool_timeout=20 
> worker.node1.recover_time=5

>  connectionTimeout="2" redirectPort="8443" />

Good: connectionTimeout == connection_pool_timeout

Everything looks okay to me. Are you having any specific problems, or
are you just asking if everything looks reasonable?

- -chris

> -- Messaggio originale -- Da: "Christopher Schultz"
>  > A: users@tomcat.apache.org
>  Inviato: 27/12/2019 16:29:28 
> Oggetto: Re: How to set apache load balancer for send request to 6 
> tomcat server
> 
>> Firma ha problemi -BEGIN PGP SIGNED MESSAGE-Hash:
>> SHA256Giancarlo,On 12/23/19 12:45,
>> Giancarlo Celli wrote: Hi, I need to configure a load
>> balancer with apache connector on a jelastic server
>> that redirects requests to 6 server workers with tomcat
>> 7 installed. Atteched you can find extract from httpd.conf> /> and workers.properties. I need to send single request to
>> tomcat server individually, so I set sticky_session to
>> 0.So you want your clients to switch servers even
>> when they don't have to? Could you tell me if
>> parameters are configured correctly? Is the collector 
>> able to handle all requests? Could you give me some
>> further advice?  Each tomcat server is
>> configured with the following parameters: 
>> Connector port="80" protocol="HTTP/1.1" maxThreads="400" > /> connectionTimeout="2" redirectPort="8443" /> />  The balancer has the following configuration:
>> Server version: Apache/2.4.39 (codeit) Server built:
>> Apr 3 2019 18:54:14  Architecture: 64-bit Server MPM:
>> event threaded: yes (fixed thread count) forked: yes
>> (variable process count)Your attachments were
>> stripped. Can you please post an example workerand your
>> JkMounts from httpd.conf? We don't need the whole httpd.conf.> />- -chris-BEGIN PGP SIGNATURE-Comment:
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>> 
>> -
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Re: [OT] Re: How to set apache load balancer for send request to 6 tomcat server

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

Zahid,

On 12/27/19 10:33, Zahid Rahman wrote:
> Good,  please expand

Please ask a separate wquestion on the list so we don't hijack this
thread.

- -chris

> On Fri, 27 Dec 2019, 15:27 Christopher Schultz, < 
> ch...@christopherschultz.net> wrote:
> 
> Zahid,
> 
> On 12/23/19 15:19, Zahid Rahman wrote:
 If your backend tomcat servers are running on different
 physical machines therefore with different ip addresses then
 there is nothing wrong with each backend  tomcat server
 listening on same port (80) of each machine. Further to
 mod_jk worker properties file redirection.
 
 It is pointless in having multiple tomcat instances running
 on same machine , because the kernel will slice and share
 resources as per priority level setting of OS.
> 
> I disagree. There are use-cases for running multiple Tomcat
> instances on the same machine.
> 
 If you don't have heavy user activity expectations   then
 this excercise is pointless.
> 
> ?
> 
> -chris
> 
 On Mon, 23 Dec 2019, 17:45 Giancarlo Celli, 
  wrote:
 
> Hi, I need to configure a load balancer with apache
> connector on a jelastic server that redirects requests to 6
> server workers with tomcat 7 installed. Atteched you can
> find extract from httpd.conf and workers.properties. I need
> to send single request to tomcat server individually, so I
> set sticky_session to 0. Could you tell me if parameters
> are configured correctly? Is the collector able to handle
> all requests? Could you give me some further advice?
> 
> Each tomcat server is configured with the following
> parameters:
> 
>  connectionTimeout="2" redirectPort="8443" />
> 
> The balancer has the following configuration: Server
> version: Apache/2.4.39 (codeit) Server built:   Apr  3 2019
> 18:54:14 Architecture:   64-bit Server MPM: event
> threaded: yes (fixed thread count) forked: yes
> (variable process count)
> 
> 
> Thanks. Best regards.
> 
> 
> --
- ---
>
>
>
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Re[2]: How to set apache load balancer for send request to 6 tomcat server

[Giancarlo Celli]

Hi Chris,
to avoid any kind of overload, I would like every single request to be 
forwarded to a backend server.

I attach the files again hoping you can view them correctly.
I await your suggestions.
Best regards.
Giancarlo


-- Messaggio originale --
Da: "Christopher Schultz" 
A: users@tomcat.apache.org
Inviato: 27/12/2019 16:29:28
Oggetto: Re: How to set apache load balancer for send request to 6 
tomcat server



Firma ha problemi
-BEGIN PGP SIGNED MESSAGE-Hash: SHA256/>Giancarlo,On 12/23/19 12:45, Giancarlo Celli wrote:/> Hi, I need to configure a load balancer with apache connector on 
a jelastic server that redirects requests to 6 server workers 
with tomcat 7 installed. Atteched you can find extract from 
httpd.conf and workers.properties. I need to send single 
request to tomcat server individually, so I set 
sticky_session to 0.So you want your clients to switch 
servers even when they don't have to? Could you tell me 
if parameters are configured correctly? Is the collector able 
to handle all requests? Could you give me some further 
advice?  Each tomcat server is configured with the 
following parameters:  Connector port="80" 
protocol="HTTP/1.1" maxThreads="400"  
connectionTimeout="2" redirectPort="8443" / /> The balancer has the following configuration: Server version:/> Apache/2.4.39 (codeit) Server built: Apr 3 2019 18:54:14 /> Architecture: 64-bit Server MPM: event threaded: yes 
(fixed thread count) forked: yes (variable process count)/>Your attachments were stripped. Can you please post an example 
workerand your JkMounts from httpd.conf? We don't need the whole 
httpd.conf.- -chris-BEGIN PGP SIGNATURE-/>Comment: Using GnuPG with Thunderbird - https://www.enigmail.net//>/>iQIzBAEBCAAdFiEEMmKgYcQvxMe7tcJcHPApP6U8pFgFAl4GI1cACgkQHPApP6U8/>pFjHPhAAyDpqNcDm5AIe+QcsF/dB0rEfWSrfXY3DFZUjvJVTLfeqhUxS+gKNbHBf/>iXhbxnXiFVMkHqgWxcMlrsQMGK5wWL00HCOrlijGbJYa52QCn2aLFJ6buf5kU+Cy/>SAXOIBbpz4x12QEU6x2LJGAEXa8fMx96xyTXl0SAiWQqQ/EtVw/0y+b5h97Zpej5/>kxR04IyOMDfqyEMVeKUVQNr46yZmscHE3r9Bo49mVqmLjD8a/tzHZybTuFVeW6xj/>lILNuPwBL+cMz5ImqfW3qQUKyKLC6Bo9gdeamIXYg4z/66XwFmBUTP/mcTf0Up67/>rbaJWgg8Si2exZhRJeB5z51hZiEXGWldkBljvwUjevZcjo9dEqvFCY7KtxdkuA/b/>ZWAyxaTJkRvzusJrRItdV6m66q5aLUKehPTeIe5zm0V10Ttfc6qOpncfULQh0d1N/>Ic719F1UKYOecqZXVqJJ+mDHhdMsulvWlV18if29riQe2mu+VUGlkjFYuxgm7TCp/>zKGzdDAI3v/9b5lLtKYqCDaIFjH0MnBjGo+x9gTvpvQRIrdC4OGPTiw8W3Urveln/>ZycUWihsb26vqaog7jJn6SLMJ/N8nVyw64Uc/slN3tCAIwHvzpu6dTVBEoXI6Jsx/>29Nqyx6B1tSXrSYXDN0PO7PmpBffS7LDEd1luYXqAtcUilgsb4Q==KK92/>-END PGP SIGNATURE-


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worker.list=loadbalancer
worker.maintain=300

worker.node1.port=8009
worker.node1.host=XX.XX.XX.01
worker.node1.type=ajp13
worker.node1.ping_mode=P
worker.node1.ping_timeout=1
worker.node1.lbfactor=1
worker.node1.socket_timeout=30
worker.node1.connection_pool_timeout=20
worker.node1.recover_time=5

worker.node2.reference=worker.node1
worker.node2.host=XX.XX.XX.02

worker.node3.reference=worker.node1
worker.node3.host=XX.XX.XX.03

worker.node4.reference=worker.node1
worker.node4.host=XX.XX.XX.04

worker.node5.reference=worker.node1
worker.node5.host=XX.XX.XX.05

worker.node6.reference=worker.node1
worker.node6.host=XX.XX.XX.06

worker.loadbalancer.type=lb
worker.loadbalancer.balance_workers=node1,node2,node3,node4,node5,node6
worker.loadbalancer.sticky_session=0
worker.loadbalancer.method=B

StartServers     1
MinSpareServers    1
MaxSpareServers    3
# ServerLimit     13
ServerLimit     13
# MaxRequestWorkers 13
MaxRequestWorkers 13
MaxConnectionsPerChild     500



StartServers     1
ServerLimit     13
MaxRequestWorkers     25
MinSpareThreads     25
MaxSpareThreads     75
ThreadsPerChild     25
MaxConnectionsPerChild     500



StartServers     2
# ServerLimit     13
ServerLimit     13
MaxRequestWorkers     325
ThreadsPerChild     25
AsyncRequestWorkerFactor   2
MaxConnectionsPerChild     500

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Re: [OT] Re: How to set apache load balancer for send request to 6 tomcat server

[Zahid Rahman]

Good,  please expand

On Fri, 27 Dec 2019, 15:27 Christopher Schultz, <
ch...@christopherschultz.net> wrote:

> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA256
>
> Zahid,
>
> On 12/23/19 15:19, Zahid Rahman wrote:
> > If your backend tomcat servers are running on different physical
> > machines therefore with different ip addresses then there is
> > nothing wrong with each backend  tomcat server listening on same
> > port (80) of each machine. Further to mod_jk worker properties file
> > redirection.
> >
> > It is pointless in having multiple tomcat instances running on same
> > machine , because the kernel will slice and share resources as per
> > priority level setting of OS.
>
> I disagree. There are use-cases for running multiple Tomcat instances
> on the same machine.
>
> > If you don't have heavy user activity expectations   then this
> > excercise is pointless.
>
> ?
>
> - -chris
>
> > On Mon, 23 Dec 2019, 17:45 Giancarlo Celli,
> >  wrote:
> >
> >> Hi, I need to configure a load balancer with apache connector on
> >> a jelastic server that redirects requests to 6 server workers
> >> with tomcat 7 installed. Atteched you can find extract from
> >> httpd.conf and workers.properties. I need to send single request
> >> to tomcat server individually, so I set sticky_session to 0.
> >> Could you tell me if parameters are configured correctly? Is the
> >> collector able to handle all requests? Could you give me some
> >> further advice?
> >>
> >> Each tomcat server is configured with the following parameters:
> >>
> >>  >> connectionTimeout="2" redirectPort="8443" />
> >>
> >> The balancer has the following configuration: Server version:
> >> Apache/2.4.39 (codeit) Server built:   Apr  3 2019 18:54:14
> >> Architecture:   64-bit Server MPM: event threaded: yes
> >> (fixed thread count) forked: yes (variable process count)
> >>
> >>
> >> Thanks. Best regards.
> >>
> >>
> >> -
> >>
> >>
> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
> >> For additional commands, e-mail: users-h...@tomcat.apache.org
> >
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Re: How to set apache load balancer for send request to 6 tomcat server

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

Giancarlo,

On 12/23/19 12:45, Giancarlo Celli wrote:
> Hi, I need to configure a load balancer with apache connector on a
> jelastic server that redirects requests to 6 server workers with
> tomcat 7 installed. Atteched you can find extract from httpd.conf
> and workers.properties. I need to send single request to tomcat
> server individually, so I set sticky_session to 0.

So you want your clients to switch servers even when they don't have to?

> Could you tell me if parameters are configured correctly? Is the
> collector able to handle all requests? Could you give me some
> further advice?
> 
> Each tomcat server is configured with the following parameters:
> 
>  connectionTimeout="2" redirectPort="8443" />
> 
> The balancer has the following configuration: Server version:
> Apache/2.4.39 (codeit) Server built:   Apr  3 2019 18:54:14 
> Architecture:   64-bit Server MPM: event threaded: yes
> (fixed thread count) forked: yes (variable process count)

Your attachments were stripped. Can you please post an example worker
and your JkMounts from httpd.conf? We don't need the whole httpd.conf.

- -chris
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[OT] Re: How to set apache load balancer for send request to 6 tomcat server

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

Zahid,

On 12/23/19 15:19, Zahid Rahman wrote:
> If your backend tomcat servers are running on different physical
> machines therefore with different ip addresses then there is
> nothing wrong with each backend  tomcat server listening on same
> port (80) of each machine. Further to mod_jk worker properties file
> redirection.
> 
> It is pointless in having multiple tomcat instances running on same
> machine , because the kernel will slice and share resources as per
> priority level setting of OS.

I disagree. There are use-cases for running multiple Tomcat instances
on the same machine.

> If you don't have heavy user activity expectations   then this
> excercise is pointless.

?

- -chris

> On Mon, 23 Dec 2019, 17:45 Giancarlo Celli,
>  wrote:
> 
>> Hi, I need to configure a load balancer with apache connector on
>> a jelastic server that redirects requests to 6 server workers
>> with tomcat 7 installed. Atteched you can find extract from
>> httpd.conf and workers.properties. I need to send single request
>> to tomcat server individually, so I set sticky_session to 0. 
>> Could you tell me if parameters are configured correctly? Is the
>> collector able to handle all requests? Could you give me some
>> further advice?
>> 
>> Each tomcat server is configured with the following parameters:
>> 
>> > connectionTimeout="2" redirectPort="8443" />
>> 
>> The balancer has the following configuration: Server version:
>> Apache/2.4.39 (codeit) Server built:   Apr  3 2019 18:54:14 
>> Architecture:   64-bit Server MPM: event threaded: yes
>> (fixed thread count) forked: yes (variable process count)
>> 
>> 
>> Thanks. Best regards.
>> 
>> 
>> -
>>
>> 
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
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Re: Re[2]: How to set apache load balancer for send request to 6 tomcat server

[Zahid Rahman]

This is what a typical workers.properties file look like.this is not same
as your configuration

*Workers properties*
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
worker.list=balancer,status

worker.tomcat1.type=ajp13
worker.tomcat1.port=8009
worker.tomcat1.host=localhost

worker.tomcat2.type=ajp13
worker.tomcat2.port=8010
worker.tomcat2.host=localhost

worker.tomcat3.type=ajp13
worker.tomcat3.port=8011
worker.tomcat3.host=localhost


worker.balancer.type=lb
worker.balancer.balance_workers=tomcat1,tomcat2,tomcat3

worker.status.type=status

On Tue, 24 Dec 2019, 09:17 Giancarlo Celli, 
wrote:

> Thanks for the reply.
> More than anything else my question is to know if the configuration
> parameters of the various threads, connections, etc. they are set up well
> or if they could somehow down the service.
> And if you recommend any changes to optimize the service itself.
> He again attached the files with the extracts of the configurations
> Thanks.
> Best regards.
> Giancarlo
>
>
> -- Messaggio originale --
> Da: "Zahid Rahman" 
> A: "Tomcat Users List" ; "Giancarlo Celli" <
> giancarlo.ce...@flottaweb.com>
> Inviato: 23/12/2019 23:56:41
> Oggetto: Re: How to set apache load balancer for send request to 6 tomcat
> server
>
> If you wish we can work the problem , piece by piece through logical
> construction of the solution.
>
>
>
> On Mon, 23 Dec 2019, 17:45 Giancarlo Celli,  >
> wrote:
>
>
> Hi,
> I need to configure a load balancer with apache connector on a jelastic
> server that redirects requests to 6 server workers with tomcat 7 installed.
> Atteched you can find extract from httpd.conf and workers.properties.
> I need to send single request to tomcat server individually, so I set
> sticky_session to 0.
> Could you tell me if parameters are configured correctly?
> Is the collector able to handle all requests?
> Could you give me some further advice?
>
> Each tomcat server is configured with the following parameters:
>
>  maxThreads="400"
> connectionTimeout="2"
> redirectPort="8443" />
>
> The balancer has the following configuration:
> Server version: Apache/2.4.39 (codeit)
> Server built: Apr 3 2019 18:54:14
> Architecture: 64-bit
> Server MPM: event
> threaded: yes (fixed thread count)
> forked: yes (variable process count)
>
>
> Thanks.
> Best regards.
>
>
> -
> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
> For additional commands, e-mail: users-h...@tomcat.apache.org
>
>
> -
> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
> For additional commands, e-mail: users-h...@tomcat.apache.org

Re: Re[2]: How to set apache load balancer for send request to 6 tomcat server

[Zahid Rahman]

Load balancing Algorithms

https://youtu.be/iqOTT7_7qXY

On Tue, 24 Dec 2019, 10:06 Zahid Rahman,  wrote:

> There is a really great series of videos on this subject. He is
> referencing tomcat Apache website.
> If you speak German
>
> https://youtu.be/mQKZ8-EfBHU
>
> On Tue, 24 Dec 2019, 09:17 Giancarlo Celli, 
> wrote:
>
>> Thanks for the reply.
>> More than anything else my question is to know if the configuration
>> parameters of the various threads, connections, etc. they are set up well
>> or if they could somehow down the service.
>> And if you recommend any changes to optimize the service itself.
>> He again attached the files with the extracts of the configurations
>> Thanks.
>> Best regards.
>> Giancarlo
>>
>>
>> -- Messaggio originale --
>> Da: "Zahid Rahman" 
>> A: "Tomcat Users List" ; "Giancarlo Celli" <
>> giancarlo.ce...@flottaweb.com>
>> Inviato: 23/12/2019 23:56:41
>> Oggetto: Re: How to set apache load balancer for send request to 6 tomcat
>> server
>>
>> If you wish we can work the problem , piece by piece through logical
>> construction of the solution.
>>
>>
>>
>> On Mon, 23 Dec 2019, 17:45 Giancarlo Celli, <
>> giancarlo.ce...@flottaweb.com>
>> wrote:
>>
>>
>> Hi,
>> I need to configure a load balancer with apache connector on a jelastic
>> server that redirects requests to 6 server workers with tomcat 7
>> installed.
>> Atteched you can find extract from httpd.conf and workers.properties.
>> I need to send single request to tomcat server individually, so I set
>> sticky_session to 0.
>> Could you tell me if parameters are configured correctly?
>> Is the collector able to handle all requests?
>> Could you give me some further advice?
>>
>> Each tomcat server is configured with the following parameters:
>>
>> > maxThreads="400"
>> connectionTimeout="2"
>> redirectPort="8443" />
>>
>> The balancer has the following configuration:
>> Server version: Apache/2.4.39 (codeit)
>> Server built: Apr 3 2019 18:54:14
>> Architecture: 64-bit
>> Server MPM: event
>> threaded: yes (fixed thread count)
>> forked: yes (variable process count)
>>
>>
>> Thanks.
>> Best regards.
>>
>>
>> -
>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
>> For additional commands, e-mail: users-h...@tomcat.apache.org
>>
>>
>> -
>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
>> For additional commands, e-mail: users-h...@tomcat.apache.org
>
>

Re: Re[2]: How to set apache load balancer for send request to 6 tomcat server

[Zahid Rahman]

There is a really great series of videos on this subject. He is referencing
tomcat Apache website.
If you speak German

https://youtu.be/mQKZ8-EfBHU

On Tue, 24 Dec 2019, 09:17 Giancarlo Celli, 
wrote:

> Thanks for the reply.
> More than anything else my question is to know if the configuration
> parameters of the various threads, connections, etc. they are set up well
> or if they could somehow down the service.
> And if you recommend any changes to optimize the service itself.
> He again attached the files with the extracts of the configurations
> Thanks.
> Best regards.
> Giancarlo
>
>
> -- Messaggio originale --
> Da: "Zahid Rahman" 
> A: "Tomcat Users List" ; "Giancarlo Celli" <
> giancarlo.ce...@flottaweb.com>
> Inviato: 23/12/2019 23:56:41
> Oggetto: Re: How to set apache load balancer for send request to 6 tomcat
> server
>
> If you wish we can work the problem , piece by piece through logical
> construction of the solution.
>
>
>
> On Mon, 23 Dec 2019, 17:45 Giancarlo Celli,  >
> wrote:
>
>
> Hi,
> I need to configure a load balancer with apache connector on a jelastic
> server that redirects requests to 6 server workers with tomcat 7 installed.
> Atteched you can find extract from httpd.conf and workers.properties.
> I need to send single request to tomcat server individually, so I set
> sticky_session to 0.
> Could you tell me if parameters are configured correctly?
> Is the collector able to handle all requests?
> Could you give me some further advice?
>
> Each tomcat server is configured with the following parameters:
>
>  maxThreads="400"
> connectionTimeout="2"
> redirectPort="8443" />
>
> The balancer has the following configuration:
> Server version: Apache/2.4.39 (codeit)
> Server built: Apr 3 2019 18:54:14
> Architecture: 64-bit
> Server MPM: event
> threaded: yes (fixed thread count)
> forked: yes (variable process count)
>
>
> Thanks.
> Best regards.
>
>
> -
> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
> For additional commands, e-mail: users-h...@tomcat.apache.org
>
>
> -
> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
> For additional commands, e-mail: users-h...@tomcat.apache.org

Re[2]: How to set apache load balancer for send request to 6 tomcat server

[Giancarlo Celli]

Thanks for the reply.
More than anything else my question is to know if the configuration 
parameters of the various threads, connections, etc. they are set up 
well or if they could somehow down the service.

And if you recommend any changes to optimize the service itself.
He again attached the files with the extracts of the configurations
Thanks.
Best regards.
Giancarlo


-- Messaggio originale --
Da: "Zahid Rahman" 
A: "Tomcat Users List" ; "Giancarlo Celli" 


Inviato: 23/12/2019 23:56:41
Oggetto: Re: How to set apache load balancer for send request to 6 
tomcat server



If you wish we can work the problem , piece by piece through logical
construction of the solution.



On Mon, 23 Dec 2019, 17:45 Giancarlo Celli, 
wrote:


 Hi,
 I need to configure a load balancer with apache connector on a jelastic
 server that redirects requests to 6 server workers with tomcat 7 installed.
 Atteched you can find extract from httpd.conf and workers.properties.
 I need to send single request to tomcat server individually, so I set
 sticky_session to 0.
 Could you tell me if parameters are configured correctly?
 Is the collector able to handle all requests?
 Could you give me some further advice?

 Each tomcat server is configured with the following parameters:

 

 The balancer has the following configuration:
 Server version: Apache/2.4.39 (codeit)
 Server built:   Apr  3 2019 18:54:14
 Architecture:   64-bit
 Server MPM: event
   threaded: yes (fixed thread count)
 forked: yes (variable process count)


 Thanks.
 Best regards.


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

Re: How to set apache load balancer for send request to 6 tomcat server

[Zahid Rahman]

If you wish we can work the problem , piece by piece through logical
construction of the solution.



On Mon, 23 Dec 2019, 17:45 Giancarlo Celli, 
wrote:

> Hi,
> I need to configure a load balancer with apache connector on a jelastic
> server that redirects requests to 6 server workers with tomcat 7 installed.
> Atteched you can find extract from httpd.conf and workers.properties.
> I need to send single request to tomcat server individually, so I set
> sticky_session to 0.
> Could you tell me if parameters are configured correctly?
> Is the collector able to handle all requests?
> Could you give me some further advice?
>
> Each tomcat server is configured with the following parameters:
>
> maxThreads="400"
>connectionTimeout="2"
>redirectPort="8443" />
>
> The balancer has the following configuration:
> Server version: Apache/2.4.39 (codeit)
> Server built:   Apr  3 2019 18:54:14
> Architecture:   64-bit
> Server MPM: event
>   threaded: yes (fixed thread count)
> forked: yes (variable process count)
>
>
> Thanks.
> Best regards.
>
>
> -
> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
> For additional commands, e-mail: users-h...@tomcat.apache.org

Re: How to set apache load balancer for send request to 6 tomcat server

[Zahid Rahman]

If your backend tomcat servers are running on different physical machines
therefore with different ip addresses then there is nothing wrong with each
backend  tomcat server listening on same port (80) of each machine. Further
to mod_jk worker properties file redirection.

It is pointless in having multiple tomcat instances running on same machine
, because the kernel will slice and share resources as per priority level
setting of OS.

If you don't have heavy user activity expectations   then this excercise is
pointless.


On Mon, 23 Dec 2019, 17:45 Giancarlo Celli, 
wrote:

> Hi,
> I need to configure a load balancer with apache connector on a jelastic
> server that redirects requests to 6 server workers with tomcat 7 installed.
> Atteched you can find extract from httpd.conf and workers.properties.
> I need to send single request to tomcat server individually, so I set
> sticky_session to 0.
> Could you tell me if parameters are configured correctly?
> Is the collector able to handle all requests?
> Could you give me some further advice?
>
> Each tomcat server is configured with the following parameters:
>
> maxThreads="400"
>connectionTimeout="2"
>redirectPort="8443" />
>
> The balancer has the following configuration:
> Server version: Apache/2.4.39 (codeit)
> Server built:   Apr  3 2019 18:54:14
> Architecture:   64-bit
> Server MPM: event
>   threaded: yes (fixed thread count)
> forked: yes (variable process count)
>
>
> Thanks.
> Best regards.
>
>
> -
> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
> For additional commands, e-mail: users-h...@tomcat.apache.org

Re: How to set apache load balancer for send request to 6 tomcat server

[Zahid Rahman]

Your home page is in Italian
https://www.flottaweb.com/en/

While your login page is in English
https://www.flottaweb.com/en/login/


On Mon, 23 Dec 2019, 17:45 Giancarlo Celli, 
wrote:

> Hi,
> I need to configure a load balancer with apache connector on a jelastic
> server that redirects requests to 6 server workers with tomcat 7 installed.
> Atteched you can find extract from httpd.conf and workers.properties.
> I need to send single request to tomcat server individually, so I set
> sticky_session to 0.
> Could you tell me if parameters are configured correctly?
> Is the collector able to handle all requests?
> Could you give me some further advice?
>
> Each tomcat server is configured with the following parameters:
>
> maxThreads="400"
>connectionTimeout="2"
>redirectPort="8443" />
>
> The balancer has the following configuration:
> Server version: Apache/2.4.39 (codeit)
> Server built:   Apr  3 2019 18:54:14
> Architecture:   64-bit
> Server MPM: event
>   threaded: yes (fixed thread count)
> forked: yes (variable process count)
>
>
> Thanks.
> Best regards.
>
>
> -
> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
> For additional commands, e-mail: users-h...@tomcat.apache.org

How to set apache load balancer for send request to 6 tomcat server

[Giancarlo Celli]

Hi,
I need to configure a load balancer with apache connector on a jelastic 
server that redirects requests to 6 server workers with tomcat 7 
installed.

Atteched you can find extract from httpd.conf and workers.properties.
I need to send single request to tomcat server individually, so I set 
sticky_session to 0.

Could you tell me if parameters are configured correctly?
Is the collector able to handle all requests?
Could you give me some further advice?

Each tomcat server is configured with the following parameters:



The balancer has the following configuration:
Server version: Apache/2.4.39 (codeit)
Server built:   Apr  3 2019 18:54:14
Architecture:   64-bit
Server MPM: event
  threaded: yes (fixed thread count)
forked: yes (variable process count)


Thanks.
Best regards.

-
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
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