Re: Virtual Hosts with Apache and Tomcat
Antonio, In fact, cap it at 10 and watch the app dring to a halt before it even gets going. This is a pretty compelling example. If the pool is drying up, they're definately screwing up. It is. But developers may reply: You are using less connections than those specified in (the contract) / (the manual) / (fill in yourself). I thinks we're misunderstanding each other. I think that when the pool is capped, and the connections are never returned, you get to a point where the pool refuses to give you a new connection, no matter how long you wait. This is a pretty good idea for some basic debugging. You should only have to demonstrate to your devs that you can deadlock their server by capping the connection pool. After that, it's their problem, right? :) With the proposal, you demonstrate they have a connection leak, which is the real problem. Once you showed them they had ONE connection leak, you can urge them to dig for other connection leaks themselves. But, of course, the idea about the deadlock seems really good also. If I understood, what you mean is: If you set the connection pool size too low for the app, it should crash at will (or better, show an 'unavailable' screen), but it should continue working as soon as load permits it. Am I wrong? I'm thinking that the connections are added to the pool upon request (from his observationa, it looks like the 10 pre-allocated connections are always ignored), and then never returned. The pool remembers the pre-allocated ones, plus the ones it created on-the-fly. I think that if he caps the connection pool size at 25, it will only take 20 requests to lock up the server for want of a DB connection. Try setting the pool size to 11 and see if you lock up after one request ;) -chris signature.asc Description: OpenPGP digital signature
RE: Virtual Hosts with Apache and Tomcat
Sysadmins are sysadmins AND developers are developers. No one cannot cross the borderline or even compare. They are clowns. I wouldn't call the developers or professionals like this. I can agree partially to yours. But if you see him, he doesn't know about the impact of JVM and tuning parameters, as he mentioned in his email. Do you expect him to take a lead in fixing that? I have seen the projects losing its focus by the nature of peoples deviating to get their interests fulfilled. I would appreciate, if the developer and sysadmin working together in this problem (i doubt verymuch as sysadmin involvment, all he can do is give top or sar reports). Sysadmin has much knowledge in configuring servers, architect the infrastructure, manage the network, backups etc. I never seen any sysadmin trying to fine tune any Application Servers. If that is the case, then the project sucess will be in stake. Everyone has to do their own roles. If I would be the sysadmin, then i would tell the developers to go these newsgroups. Dont you think that most of developers resolve their issues by newsgroups and websites for their problems. This isn't about communication or a sysadmin whining to the devs about something he doesn't understand. He clearly mentioned that the developeers raised that questions and trying to get the verification from the newsgroups. Dont you think that is the part of communication gap between the developers and him. If he is very keen, why not one of the developers responding his thread and get the issues fixed for the project. -Original Message- From: Christopher Schultz [mailto:[EMAIL PROTECTED] Sent: Monday, March 01, 2004 9:49 PM To: Tomcat Users List Subject: Re: Virtual Hosts with Apache and Tomcat Kannan, Being yourself as SYSADMIN for UNIX and Network, it would be nice that developers or professional should take a lead into get into this problem. Easy for you to say. Let's face it: these guys have a connection leak. Plain and simple. Your devs need to find their leak. It is demonstrable. It locks up the server. QED. Make them fix it. This isn't about communication or a sysadmin whining to the devs about something he doesn't understand. This is a resource leak. It is apparently well-understood. He's done his homework. They are clowns. -chris - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Virtual Hosts with Apache and Tomcat
On Monday March 01 2004 06:42 pm, Christopher Schultz wrote: Tried that. Capped it at 35 and the webserver stopped servicing any DB request as soon as the pool reached 35. This is why I believe the pool management is faulty and/or something is hogging all the connections. I share your belief. Let's try to prove it. Raise it to some other figure, and see if the same happens again. Ask them how big should the figure be. In fact, cap it at 10 and watch the app dring to a halt before it even gets going. This is a pretty compelling example. If the pool is drying up, they're definately screwing up. Whoa there pardner: I am not going to deliberately cripple a production box. The problem has been demonstated in test environments and that is as far as I will intentionally let it go. That said, the information i've gathered here has been helpful. I am a great sysadmin but not a great java programmer so I appreciate it to. -- Stephen Carville UNIX and Network Administrator DPSI 310-342-3602 [EMAIL PROTECTED] -- Most people prefer believing their leaders are just and fair even in the face of contrary evidence. Perhaps this is because, once a man acknowledges that the government he lives under is corrupt and cares nothing for justice or fairness, that man also has to choose what he will do about it. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Virtual Hosts with Apache and Tomcat
No that's not true, My colleges and me are doing both sides of the border (me being mainly a developer, others being mainly sysadmins but we don't have any person that's not doing at least 20% of the other side's job (It's a bit of pair sysadministration) I don't like the notion of pure programmers and pure sys admins. (If the the organsation gets big enough you need such roles, but it's alway good to have some people in each group that know the other side well enough) -Original Message- From: Kannan Sundararajan [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 02, 2004 4:31 PM To: 'Tomcat Users List' Subject: RE: Virtual Hosts with Apache and Tomcat Sysadmins are sysadmins AND developers are developers. No one cannot cross the borderline or even compare. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Virtual Hosts with Apache and Tomcat
Stephen, In fact, cap it at 10 and watch the app dring to a halt before it even gets going. This is a pretty compelling example. If the pool is drying up, they're definately screwing up. Whoa there pardner: I am not going to deliberately cripple a production box. The problem has been demonstated in test environments and that is as far as I will intentionally let it go. Oh, I totally meant in a development setting. I would never suggest that you cripple a production box. You can easily demonstrate the problem. Do that in dev, and make them fix it. Then, deploy the fix as part of your regular deployment procedure. -chris signature.asc Description: OpenPGP digital signature
RE: Virtual Hosts with Apache and Tomcat
Yes, But that doesn't mean that we can put and point on developers for any problem. -Original Message- From: Ralph Einfeldt [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 02, 2004 10:59 AM To: Tomcat Users List Subject: RE: Virtual Hosts with Apache and Tomcat No that's not true, My colleges and me are doing both sides of the border (me being mainly a developer, others being mainly sysadmins but we don't have any person that's not doing at least 20% of the other side's job (It's a bit of pair sysadministration) I don't like the notion of pure programmers and pure sys admins. (If the the organsation gets big enough you need such roles, but it's alway good to have some people in each group that know the other side well enough) -Original Message- From: Kannan Sundararajan [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 02, 2004 4:31 PM To: 'Tomcat Users List' Subject: RE: Virtual Hosts with Apache and Tomcat Sysadmins are sysadmins AND developers are developers. No one cannot cross the borderline or even compare. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Virtual Hosts with Apache and Tomcat
Kennan, I can agree partially to yours. But if you see him, he doesn't know about the impact of JVM and tuning parameters, as he mentioned in his email. Do you expect him to take a lead in fixing that? I have seen the projects losing its focus by the nature of peoples deviating to get their interests fulfilled. This is not a 'special' interest. This is a legitimate resource leak that he wants them to fix. He can demonstrate the leak. That's all that's necessary on his part. The rest is up to the developers. I'm not suggesting that he fix the problem. Only to demonstrate it and get the developers to fix the problem. I would appreciate, if the developer and sysadmin working together in this problem (i doubt verymuch as sysadmin involvment, all he can do is give top or sar reports). Sysadmin has much knowledge in configuring servers, architect the infrastructure, manage the network, backups etc. Yes, but *this* sysadmin also has enpirical data that demonstrates the resource leak. Forget sar and top. How about the app locks up. That should be motivating enough. I never seen any sysadmin trying to fine tune any Application Servers. Actually, the sysadmin is the /perfect/ person to fine-tune app servers. Most devs don't know jack about the app server they use. That's why they deploy onto app servers with standard interfaces and services (Servlet and JSP spec). The deployment and admin folks are the ones who should know how to configure the app servers. If that is the case, then the project sucess will be in stake. Everyone has to do their own roles. If I would be the sysadmin, then i would tell the developers to go these newsgroups. Dont you think that most of developers resolve their issues by newsgroups and websites for their problems. Here's the problem: the devs refuse to admit there's a problem. They won't go to the newsgroups to ask about a problem that they don't believe exists. That's why the sysadmin is here. He wanted to get some information on how to prove that there's a leak. He's gotton that information. Let's wait for the devs to visit the group, now ;) He clearly mentioned that the developeers raised that questions and trying to get the verification from the newsgroups. Dont you think that is the part of communication gap between the developers and him. If he is very keen, why not one of the developers responding his thread and get the issues fixed for the project. I think the problem is that the devs think the sysadmin is foolish and wrong about the resource leak. Now that he can demonstrate the leak, they will take him more seriously. I believe that we have helped in this situation, and that the devs will now address the problem instead of sticking their heads in the sand. -chris signature.asc Description: OpenPGP digital signature
Re: Virtual Hosts with Apache and Tomcat
With due respect to everyone's opinion on this thread, I really appreciate it if this topic was taken offline. I think other than filling up people's mailbox, I don't seem to see any technical knowledge being shared. Just my 2 cents. Thanks, RS Christopher Schultz [EMAIL PROTECTED]To: Tomcat Users List omcast.net [EMAIL PROTECTED] cc: 03/02/2004 10:42 AM Subject: Re: Virtual Hosts with Apache and Tomcat Please respond to Tomcat Users List Kennan, I can agree partially to yours. But if you see him, he doesn't know about the impact of JVM and tuning parameters, as he mentioned in his email. Do you expect him to take a lead in fixing that? I have seen the projects losing its focus by the nature of peoples deviating to get their interests fulfilled. This is not a 'special' interest. This is a legitimate resource leak that he wants them to fix. He can demonstrate the leak. That's all that's necessary on his part. The rest is up to the developers. I'm not suggesting that he fix the problem. Only to demonstrate it and get the developers to fix the problem. I would appreciate, if the developer and sysadmin working together in this problem (i doubt verymuch as sysadmin involvment, all he can do is give top or sar reports). Sysadmin has much knowledge in configuring servers, architect the infrastructure, manage the network, backups etc. Yes, but *this* sysadmin also has enpirical data that demonstrates the resource leak. Forget sar and top. How about the app locks up. That should be motivating enough. I never seen any sysadmin trying to fine tune any Application Servers. Actually, the sysadmin is the /perfect/ person to fine-tune app servers. Most devs don't know jack about the app server they use. That's why they deploy onto app servers with standard interfaces and services (Servlet and JSP spec). The deployment and admin folks are the ones who should know how to configure the app servers. If that is the case, then the project sucess will be in stake. Everyone has to do their own roles. If I would be the sysadmin, then i would tell the developers to go these newsgroups. Dont you think that most of developers resolve their issues by newsgroups and websites for their problems. Here's the problem: the devs refuse to admit there's a problem. They won't go to the newsgroups to ask about a problem that they don't believe exists. That's why the sysadmin is here. He wanted to get some information on how to prove that there's a leak. He's gotton that information. Let's wait for the devs to visit the group, now ;) He clearly mentioned that the developeers raised that questions and trying to get the verification from the newsgroups. Dont you think that is the part of communication gap between the developers and him. If he is very keen, why not one of the developers responding his thread and get the issues fixed for the project. I think the problem is that the devs think the sysadmin is foolish and wrong about the resource leak. Now that he can demonstrate the leak, they will take him more seriously. I believe that we have helped in this situation, and that the devs will now address the problem instead of sticking their heads in the sand. -chris (See attached file: signature.asc) This transmission is intended to be strictly confidential. If you are not the intended recipient of this message, you may not disclose, print, copy or disseminate this information. If you have received this in error, please reply and notify the sender (only) and delete the message. Unauthorized interception of this e-mail is a violation of federal criminal law. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Virtual Hosts with Apache and Tomcat
Here is some more information on the problem. From a developer: According to the document that the link below refers to, a single instance of Tomcat will have multiple JVMs, where each JVM represents a virtual host. The following link clearly states this virtual host concept as it applies to Tomcat. http://jakarta.apache.org/tomcat/tomcat-3.2-doc/uguide/tomcat_ug.html (please refer the virtual host section).} As per the above document, each JVM corresponding to a virtual host contains a database connection pool object. Hence the connection pool that has been implemented seems to be in-line with the virtual host definition in the above document. Also, we are also using the same concept of DBCP in our applications. The difference in our case is that we have chosen to use Oracle that also uses the same DataSource class. OK, it is my understanding that the problem of a new JVM for each virtual host was fixed in 4.X. True? I RT'ed some more FM on 4.2 and found that the Tomcat developers suggest that the connection code be placed in $CATALINA_HOME/common/lib. I passed that to the developers and: As regards putting the flood.jar in $CATALINA_HOME/common/lib, we tried it and the behavior was no different. Is there anyone running tomcat with virtual hosts and do you also have this problem? It is a little hard to beleive this is so difficult to implement but hasn't come up before. (at least I couldn't find it in the archives) -- Stephen Carville UNIX and Network Administrator DPSI 310-342-3602 [EMAIL PROTECTED] -- Most people prefer believing their leaders are just and fair even in the face of contrary evidence. Perhaps this is because, once a man acknowledges that the government he lives under is corrupt and cares nothing for justice or fairness, that man also has to choose what he will do about it. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Virtual Hosts with Apache and Tomcat
I have a sneaking suspicion that someone is still blowing smoke. ;) Either 1) the oracle pool has a leak 2) oracle server has a problem closing connections 3) you have a leak in the application. For problem 3), I find the DBCP's ability to 'tattle' on bad JSP pages/classes invaluable in tracking down this type of behaviour. Here's a (big) snip. I've removed a bunch of parameters, as they would change for your app. But the key ones are included at the bottom. Context path= docBase=/home/webhome/buzz/ defaultSessionTimeout=60 reloadable=true Resource name=jdbc/BuzzDB auth=Container type=javax.sql.DataSource / ResourceParams name=jdbc/BuzzDB parameter namefactory/name valueorg.apache.commons.dbcp.BasicDataSourceFactory/value /parameter !-- Max number of dB connections. Set to 0 for no limit. -- !-- Max number of idle dB connections to retain. Set to 0 for no limit. -- !-- Max wait for dB connection to become available (in ms), -1 to wait indefinitely. -- !-- MySQL dB username, password, driver, URL -- parameter nameremoveAbandoned/name valuetrue/value /parameter parameter nameremoveAbandonedTimeout/name value20/value /parameter parameter namelogAbandoned/name valuetrue/value /parameter /ResourceParams When you have a mis-behaving JSP (one that doesn't return its connection), you'll get a stack trace in catalina.out (or wherever you have redirected catalina.out) that contains the name of the JSP or class that did not return a connection, and that was forced abandoned by the pool. With the above config, this happens in 20 seconds (though it won't be logged until the *next* access of the pool). I'm not familiar with the Oracle drivers, but hopefully they have something similar? The reason I think your developers are blowing smoke... You are using 4.1.x and they are quoting 3.x docs. They should know better! -Original Message- From: Stephen Carville [mailto:[EMAIL PROTECTED] Sent: Monday, March 01, 2004 9:18 AM To: Tomcat Users List Subject: Re: Virtual Hosts with Apache and Tomcat Here is some more information on the problem. From a developer: According to the document that the link below refers to, a single instance of Tomcat will have multiple JVMs, where each JVM represents a virtual host. The following link clearly states this virtual host concept as it applies to Tomcat. http://jakarta.apache.org/tomcat/tomcat-3.2-doc/uguide/tomcat_ug.html (please refer the virtual host section).} As per the above document, each JVM corresponding to a virtual host contains a database connection pool object. Hence the connection pool that has been implemented seems to be in-line with the virtual host definition in the above document. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Virtual Hosts with Apache and Tomcat
Being yourself as SYSADMIN for UNIX and Network, it would be nice that developers or professional should take a lead into get into this problem. It looks like that to me that it has been stepping or bossing up the developers up there. And since there is lot of techonology involved, it would be much difficult for anyone to fix your problem. I guess there might be some senior developer, who can do the situation much better. You have been trying to getinto JVMs and tuning and so on... the best is developers to be involved actively. There could be lot of documents and phrases from a developer side, which you are conveying. But for me looks like that you are trying to put your own things into them, which may be difficult as a communication area of project management( which is very crucial to success of a project). -Original Message- From: Stephen Carville [mailto:[EMAIL PROTECTED] Sent: Monday, March 01, 2004 10:18 AM To: Tomcat Users List Subject: Re: Virtual Hosts with Apache and Tomcat Here is some more information on the problem. From a developer: According to the document that the link below refers to, a single instance of Tomcat will have multiple JVMs, where each JVM represents a virtual host. The following link clearly states this virtual host concept as it applies to Tomcat. http://jakarta.apache.org/tomcat/tomcat-3.2-doc/uguide/tomcat_ug.html (please refer the virtual host section).} As per the above document, each JVM corresponding to a virtual host contains a database connection pool object. Hence the connection pool that has been implemented seems to be in-line with the virtual host definition in the above document. Also, we are also using the same concept of DBCP in our applications. The difference in our case is that we have chosen to use Oracle that also uses the same DataSource class. OK, it is my understanding that the problem of a new JVM for each virtual host was fixed in 4.X. True? I RT'ed some more FM on 4.2 and found that the Tomcat developers suggest that the connection code be placed in $CATALINA_HOME/common/lib. I passed that to the developers and: As regards putting the flood.jar in $CATALINA_HOME/common/lib, we tried it and the behavior was no different. Is there anyone running tomcat with virtual hosts and do you also have this problem? It is a little hard to beleive this is so difficult to implement but hasn't come up before. (at least I couldn't find it in the archives) -- Stephen Carville UNIX and Network Administrator DPSI 310-342-3602 [EMAIL PROTECTED] -- Most people prefer believing their leaders are just and fair even in the face of contrary evidence. Perhaps this is because, once a man acknowledges that the government he lives under is corrupt and cares nothing for justice or fairness, that man also has to choose what he will do about it. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Virtual Hosts with Apache and Tomcat
Antonio,
And bad. Every time I restart, Tomcat loses the state information for
established login sessions. Customer don't like that.
That (with a high probability) is because some objects they store in
sessions are not Serializable. IOW, they violate the Servlet Specification.
I'm just curious: is this actually a violation of the servlet spec? The
API seems to indicate that you can put anything in the session that you
want. I don't think it has to be Serializable... thought I was wrong
before, once ;)
Tried that. Capped it at 35 and the webserver stopped servicing any
DB request as soon as the pool reached 35. This is why I believe the
pool management is faulty and/or something is hogging all the
connections.
I share your belief. Let's try to prove it. Raise it to some other
figure, and see if the same happens again. Ask them how big should the
figure be.
In fact, cap it at 10 and watch the app dring to a halt before it even
gets going. This is a pretty compelling example. If the pool is drying
up, they're definately screwing up.
Oracle 9i takes 16M per connections. So Oracle claims. I've tested
it as high as 20M. I generally use 18M as a guideline
I've heard (not a DBA, though) that Oracle 9i has a mode where it does
not spawn a process per connection, but uses threads instead (?) and in
that mode it uses far less resources. This way, we have some modest
Oracle servers hjandling up to 300 simultaneous (mostly idle) connections.
It depends on the size of your rollback segments and the number of
transactions you are doing. If you do big transactions, each DB
connection (thread *or* process) wioll need a big chunk of memory. I
wouldn't kill yourself trying to figure out how to reduce this process
size. Fix the real problem, which is poor connection management.
I'll mention DBCP and see what happens
DBCP has a nice removeAbandoned feature.
Otherwise, you can use this code (tweak it to your needs) to track where
connections are opened and closed from:
(code not tested at all)
// open method signature
// code that opens the connection (and stores it in conn variable)
try {
throw new Exception(Pool Debugger says: Connection + conn +
opened:);
} catch (Exception e) {
e.printStackTrace();
}
I've seen code like this before. Many people think you can't get a stack
trace unless you throw an exception. Not so. All you have to do is
instantiate it, and you get the stack trace. So, the following will
produce identical results, without the nasty try/throw/catch:
new Exception(Pool debugged says: ...).printStackTrace();
I would recommend explicitly printing out the hashCode of the Connection
object itself, just in case the connection doesn't include any
identifying information in it's .toString method.
Then you can...
#!/bin/sh
# Filter pool debugger statements.
This is a pretty good idea for some basic debugging. You should only
have to demonstrate to your devs that you can deadlock their server by
capping the connection pool. After that, it's their problem, right? :)
-chris
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Re: Virtual Hosts with Apache and Tomcat
Kannan, Being yourself as SYSADMIN for UNIX and Network, it would be nice that developers or professional should take a lead into get into this problem. Easy for you to say. Let's face it: these guys have a connection leak. Plain and simple. Your devs need to find their leak. It is demonstrable. It locks up the server. QED. Make them fix it. This isn't about communication or a sysadmin whining to the devs about something he doesn't understand. This is a resource leak. It is apparently well-understood. He's done his homework. They are clowns. -chris signature.asc Description: OpenPGP digital signature
Re: Virtual Hosts with Apache and Tomcat
That (with a high probability) is because some objects they store in sessions are not Serializable. IOW, they violate the Servlet Specification. I'm just curious: is this actually a violation of the servlet spec? The API seems to indicate that you can put anything in the session that you want. I don't think it has to be Serializable... thought I was wrong before, once ;) I'm not 100% sure. What I am sure is that you cannot user session replication or session persistence without this. Tried that. Capped it at 35 and the webserver stopped servicing any DB request as soon as the pool reached 35. This is why I believe the pool management is faulty and/or something is hogging all the connections. In fact, cap it at 10 and watch the app dring to a halt before it even gets going. This is a pretty compelling example. If the pool is drying up, they're definately screwing up. It is. But developers may reply: You are using less connections than those specified in (the contract) / (the manual) / (fill in yourself). It depends on the size of your rollback segments and the number of transactions you are doing. If you do big transactions, each DB connection (thread *or* process) wioll need a big chunk of memory. I wouldn't kill yourself trying to figure out how to reduce this process size. Fix the real problem, which is poor connection management. No doubt... I've seen code like this before. Many people think you can't get a stack trace unless you throw an exception. Not so. All you have to do is instantiate it, and you get the stack trace. So, the following will produce identical results, without the nasty try/throw/catch: new Exception(Pool debugged says: ...).printStackTrace(); I thought I had tried that (JDK1.3) and I thought it had not worked. Glad to know it does... I would recommend explicitly printing out the hashCode of the Connection object itself, just in case the connection doesn't include any identifying information in it's .toString method. Oh. Of course... I never happened to come across such a braindead Connection class. Then you can... #!/bin/sh # Filter pool debugger statements. This is a pretty good idea for some basic debugging. You should only have to demonstrate to your devs that you can deadlock their server by capping the connection pool. After that, it's their problem, right? :) With the proposal, you demonstrate they have a connection leak, which is the real problem. Once you showed them they had ONE connection leak, you can urge them to dig for other connection leaks themselves. But, of course, the idea about the deadlock seems really good also. If I understood, what you mean is: If you set the connection pool size too low for the app, it should crash at will (or better, show an 'unavailable' screen), but it should continue working as soon as load permits it. Am I wrong? Yours, Antonio Fiol smime.p7s Description: S/MIME Cryptographic Signature
Virtual Hosts with Apache and Tomcat
I am having a problem with tomcat opening up up a number of connections to an oracle server that never get closed. This causes the number of open connections to build up over time and, eventually, causes the oracle server to use all of its swap. Restarting tomcat clers this up. I think there is a problem with some jsp's opening connections and then not closig them but the developers claim (surprise) their code is clean. The explanation they give is: The increase in number of connections beyond the CACHE_MAX_SIZE setting in the app1.properties file is due to the private labeled sites. For each virtual host (private labeled site), there will be a separate JVM running the Tomcat web server space. For each of these JVMs, there will be a separate database connection cache pool to serve the user requests. This is the designed functionality of a web server that will support virtual hosts. I don't know tomcat near as well as I do Apache but this sounds like someone is blowing smoke. If I run ps on the server it looks to me like there is only one instance and if I restart tomcat, _all_ virtual hosts are restarted. As near as I can tell from RTFM, tomcat fully supports named based virtual domains since about 3.2 or so. I am using: Redhat Linux 7.2 Kernel: 2.4.7-10 Apache: 1.3.22 Tomcat: 4.1.24 mod_jk: 1.2.4 I don't care who is right or wrong but I do want to clear up this problem. Any ideas? If you need any more information, just ask. -- Stephen Carville UNIX and Network Administrator DPSI 310-342-3602 [EMAIL PROTECTED] -- Most people prefer believing their leaders are just and fair even in the face of contrary evidence. Perhaps this is because, once a man acknowledges that the government he lives under is corrupt and cares nothing for justice or fairness, that man also has to choose what he will do about it. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Virtual Hosts with Apache and Tomcat
Stephen, I am having a problem with tomcat opening up up a number of connections to an oracle server that never get closed. This causes the number of open connections to build up over time and, eventually, causes the oracle server to use all of its swap. That's not good :( Restarting tomcat clers this up. That's good! :) I think there is a problem with some jsp's opening connections and then not closig them but the developers claim (surprise) their code is clean. It's tough to make sure that database connections (and statements, and result sets) get cleaned up in JSPs, unless you have a talented JSP author. (Most JSP authors aren't that talented, unless they are also good Java developers, in which case they would have implemented the DB access in a servlet and just used the JSP for display. Anywho...) If the number of connections keeps going up and never tapers off or stops altogether, then something is misconfigured with your connection pools. Even if the engineers say that the pages are clean, you should protect the app server (and the DB server) from being swamped by capping the number of DB connections allowed. Ever. Any decent DB connection pool lets you specify this kind of thing. You should set that value to something reasonable. You can get away with a suprisingly low number of these. (I was consulting on a big project that was a somewhat DB intensive, web-based app. They had the app server configured to accept 75 simultaneous connections. They also set the db connection pool size to 75. I asked why and they basically said so that every HTTP connection can get a db connection. Duh. I talked to management and make them put in debugging information to find out how many connections were ever in use simultaneously. Seven. (Suckers). They also didn't realize that Oracle takes like 10MB per connection on the backend, and they had six physical app servers running two separate copies of the application. That's 75 * 6 * 2 * 10MB = 900MB. Good thing the DB server had 3.5GB of RAM, but still...) The explanation they give is: The increase in number of connections beyond the CACHE_MAX_SIZE setting in the app1.properties file is due to the private labeled sites. For each virtual host (private labeled site), there will be a separate JVM running the Tomcat web server space. For each of these JVMs, there will be a separate database connection cache pool to serve the user requests. This is the designed functionality of a web server that will support virtual hosts. I don't know tomcat near as well as I do Apache but this sounds like someone is blowing smoke. This isn't too outrageous, actually. If each webapp has its own connection pool, and they are configured to have at maximum, say, 10 connections, then you'll probably end up with 10 * webapp_count connections to the database server, regardless of the number of Tomcats/JVMs are running. If Tomcat is configured to handle the connection to the database (say, through a Realm and a JNDI-configured connection pool), you might be able to share connections between all of the webapps. If you solve the private-labelling problem by using multiple webapps, but through the same database, this approach seems like an excellent idea; configure Tomcat to provide a JNDI-based connection pool, and then configure the separate applications to use that pool. That way, you can control the total number of connections across all private labels, instead of having them be independent. If I run ps on the server it looks to me like there is only one instance and if I restart tomcat, _all_ virtual hosts are restarted. Yeah, then it's definately separate webapps running on a single instance of Tomcat. Try to pitch the above idea to your engineers and see what they say (probably something like it's fine the way it is!). I don't care who is right or wrong but I do want to clear up this problem. Any ideas? If you need any more information, just ask. I think I'd need to know if the connections were really never going away. Use netstat to find out what state they're in. If they all say ESTABLISHED, then you've got a connection leak. If many of them say TIME_WAIT or something like that, then you might have a problem with either the client or the server not properly hanging up the phone. If it's the former, then yell at your engineers. Cap that connection pool size at something reasonable, like ten connections. After that, the application starves. That's good for the app server and the database, while bad for your application. You can use Jakarta Commons' DBCP as your connections pool. It has some wonderful debug options, like giving you a stack trace for the code that obtained the connection if that connection isn't returned within a certain amount of time. That can save days or weeks of code reviews. If your connections are in TIME_WAIT, see how long they stay that way. Waiting 5-10 minutes for a connection like that to get
Re: Virtual Hosts with Apache and Tomcat
On Sunday February 29 2004 11:58 am, Christopher Schultz wrote: Stephen, I am having a problem with tomcat opening up up a number of connections to an oracle server that never get closed. This causes the number of open connections to build up over time and, eventually, causes the oracle server to use all of its swap. That's not good :( Tell me about it :-) Restarting tomcat clers this up. That's good! :) And bad. Every time I restart, Tomcat loses the state information for established login sessions. Customer don't like that. I think there is a problem with some jsp's opening connections and then not closig them but the developers claim (surprise) their code is clean. It's tough to make sure that database connections (and statements, and result sets) get cleaned up in JSPs, unless you have a talented JSP author. (Most JSP authors aren't that talented, unless they are also good Java developers, in which case they would have implemented the DB access in a servlet and just used the JSP for display. Anywho...) I know they use ODBC for the database connections and there is a pool manager in there somewhere. there is a jar file shared by all the jsp's that handles the connection pooling and a bunch of other stuff. The pool manager is PoolmanBean.class. I don't know enough about Java to say if that is a standard library or not. I guess I don't know a lot about this case but I'm learning more :-) Anyway, right after startup there are 10 connections. If I open the main page and login, opens another connection closes. Logging out adds another connection. Both of these close but, apparently, none of the tne original connectiions are not being used and, as time goes on, more connections get added to this anomolous pool. I see someone just uploaded a new version of the jar file with the connection code in it so teh above may not be accurate If the number of connections keeps going up and never tapers off or stops altogether, then something is misconfigured with your connection pools. Even if the engineers say that the pages are clean, you should protect the app server (and the DB server) from being swamped by capping the number of DB connections allowed. Ever. Any decent DB connection pool lets you specify this kind of thing. You should set that value to something reasonable. You can get away with a suprisingly low number of these. Tried that. Capped it at 35 and the webserver stopped servicing any DB request as soon as the pool reached 35. This is why I believe the pool management is faulty and/or something is hogging all the connections. (I was consulting on a big project that was a somewhat DB intensive, web-based app. They had the app server configured to accept 75 simultaneous connections. They also set the db connection pool size to 75. I asked why and they basically said so that every HTTP connection can get a db connection. Duh. I talked to management and make them put in debugging information to find out how many connections were ever in use simultaneously. Seven. (Suckers). They also didn't realize that Oracle takes like 10MB per connection on the backend, and they had six physical app servers running two separate copies of the application. That's 75 * 6 * 2 * 10MB = 900MB. Good thing the DB server had 3.5GB of RAM, but still...) Oracle 9i takes 16M per connections. So Oracle claims. I've tested it as high as 20M. I generally use 18M as a guideline The explanation they give is: The increase in number of connections beyond the CACHE_MAX_SIZE setting in the app1.properties file is due to the private labeled sites. For each virtual host (private labeled site), there will be a separate JVM running the Tomcat web server space. For each of these JVMs, there will be a separate database connection cache pool to serve the user requests. This is the designed functionality of a web server that will support virtual hosts. I don't know tomcat near as well as I do Apache but this sounds like someone is blowing smoke. This isn't too outrageous, actually. If each webapp has its own connection pool, and they are configured to have at maximum, say, 10 connections, then you'll probably end up with 10 * webapp_count connections to the database server, regardless of the number of Tomcats/JVMs are running. If Tomcat is configured to handle the connection to the database (say, through a Realm and a JNDI-configured connection pool), you might be able to share connections between all of the webapps. If you solve the private-labelling problem by using multiple webapps, but through the same database, this approach seems like an excellent idea; configure Tomcat to provide a JNDI-based connection pool, and then configure the separate applications to use that pool. That way, you can control the total number of connections across all private labels, instead of having them be independent. If I run ps on the
RE: Virtual Hosts with Apache and Tomcat
Your developers may be right in the end but with wrong arguments. With virtual hosting or several webapps you have just one jvm. But each webapp has it's own classloader. If the pool is loaded by the wepapp classloader you will have one instance of the pool for each webapp. -Original Message- From: Stephen Carville [mailto:[EMAIL PROTECTED] Sent: Sunday, February 29, 2004 5:48 PM To: Tomcat Users Subject: Virtual Hosts with Apache and Tomcat The increase in number of connections beyond the CACHE_MAX_SIZE setting in the app1.properties file is due to the private labeled sites. For each virtual host (private labeled site), there will be a separate JVM running the Tomcat web server space. For each of these JVMs, there will be a separate database connection cache pool to serve the user requests. This is the designed functionality of a web server that will support virtual hosts.
Re: Virtual Hosts with Apache and Tomcat
Stephen Carville wrote: Restarting tomcat clers this up. That's good! :) And bad. Every time I restart, Tomcat loses the state information for established login sessions. Customer don't like that. That (with a high probability) is because some objects they store in sessions are not Serializable. IOW, they violate the Servlet Specification. I think there is a problem with some jsp's opening connections and then not closig them but the developers claim (surprise) their code is clean. It's tough to make sure that database connections (and statements, and result sets) get cleaned up in JSPs, unless you have a talented JSP author. (Most JSP authors aren't that talented, unless they are also good Java developers, in which case they would have implemented the DB access in a servlet and just used the JSP for display. Anywho...) I know they use ODBC for the database connections and there is a pool manager in there somewhere. there is a jar file shared by all the jsp's that handles the connection pooling and a bunch of other stuff. The pool manager is PoolmanBean.class. I don't know enough about Java to say if that is a standard library or not. I guess I don't know a lot about this case but I'm learning more :-) Anyway, right after startup there are 10 connections. If I open the main page and login, opens another connection closes. Logging out adds another connection. Both of these close but, apparently, none of the tne original connectiions are not being used and, as time goes on, more connections get added to this anomolous pool. I see someone just uploaded a new version of the jar file with the connection code in it so teh above may not be accurate Most developers think their code is beautiful, and so on (and I am a developer)... unless you prove they are wrong. One point on your side is that they probably *are* wrong. If the number of connections keeps going up and never tapers off or stops altogether, then something is misconfigured with your connection pools. Even if the engineers say that the pages are clean, you should protect the app server (and the DB server) from being swamped by capping the number of DB connections allowed. Ever. Any decent DB connection pool lets you specify this kind of thing. You should set that value to something reasonable. You can get away with a suprisingly low number of these. Tried that. Capped it at 35 and the webserver stopped servicing any DB request as soon as the pool reached 35. This is why I believe the pool management is faulty and/or something is hogging all the connections. I share your belief. Let's try to prove it. Raise it to some other figure, and see if the same happens again. Ask them how big should the figure be. (I was consulting on a big project that was a somewhat DB intensive, web-based app. They had the app server configured to accept 75 simultaneous connections. They also set the db connection pool size to 75. I asked why and they basically said so that every HTTP connection can get a db connection. Duh. I talked to management and make them put in debugging information to find out how many connections were ever in use simultaneously. Seven. (Suckers). They also didn't realize that Oracle takes like 10MB per connection on the backend, and they had six physical app servers running two separate copies of the application. That's 75 * 6 * 2 * 10MB = 900MB. Good thing the DB server had 3.5GB of RAM, but still...) Oracle 9i takes 16M per connections. So Oracle claims. I've tested it as high as 20M. I generally use 18M as a guideline I've heard (not a DBA, though) that Oracle 9i has a mode where it does not spawn a process per connection, but uses threads instead (?) and in that mode it uses far less resources. This way, we have some modest Oracle servers hjandling up to 300 simultaneous (mostly idle) connections. Cap that connection pool size at something reasonable, like ten connections. After that, the application starves. That's good for the app server and the database, while bad for your application. You can use Jakarta Commons' DBCP as your connections pool. It has some wonderful debug options, like giving you a stack trace for the code that obtained the connection if that connection isn't returned within a certain amount of time. That can save days or weeks of code reviews. If your connections are in TIME_WAIT, see how long they stay that way. Waiting 5-10 minutes for a connection like that to get cleaned up is not unheard of. If they're piling up on top of one anothor and /never/ going away, it's time to talk to a system administrator. If the syadmin is you, it's time to talk to the guy you go to when you don't know things. Everyone needs a guy (or girl!) like that. :) I'll mention DBCP and see what happens DBCP has a nice removeAbandoned feature. Otherwise, you can use this code (tweak it to your needs) to track where connections are opened and
RE: JK and multiple virtual hosts on Apache (repost)
This has come up quite often in the past. Search the archives for JkUriSet. When using apache/modssl make sure you use IP based virtual hosts. rls Madere, Colin [EMAIL PROTECTED] 12/08/2002 08:00 PM Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:RE: JK and multiple virtual hosts on Apache (repost) Thanks for the input, but I don't want any port numbers in the URLs for a number of reasons. Hence my use of the JK connector (that and only wanting to set up SSL through Apache and not Tomcat). I'm quite surprised no one else on this list has a setup similar to what I'm doing -Original Message- From: David Brown [SMTP:[EMAIL PROTECTED]] Sent: Friday, December 06, 2002 7:48 PM To:'Tomcat Users List' Subject: Re: JK and multiple virtual hosts on Apache (repost) Madere, Colin writes: I might have had some list trouble so I'm reposting this (since I got no responses so far). -Original Message- From: Madere, Colin [SMTP:[EMAIL PROTECTED]] Sent: Thursday, December 05, 2002 5:55 PM To: '[EMAIL PROTECTED]' Subject:4 Apache2 VirtualHosts + 1 Tomcat4 = ? JK connectors? Before I go off into JK configuration craziness, I thought I'd post my situation and see what rises to the top. What I have: 1 Apache 2.0.43 with 4 virutal hosts (3 w/ SSL) 1 Tomcat 4.12 (no virtual hosts as of yet) 1 JK 1.2.0 connector working properly with the non-SSL host from Apache What I want to do: Have any requests for apps running on Tomcat from any of the 4 virtual hosts to be redirected to the same Tomcat instance. This is mainly for simplicity since I will be using Tomcat Realms for login to determine what to do for a user in the app based on role. If I have to do 4 virtual hosts in Tomcat, then let me know :) Is the correct way to make this work with JK to create 4 Connector instances at, say, ports 8009-8012 in my tomcat server.xml, then set up 4 JK workers in workers.properties with each respective virtual host's domain name and redirection port? Or is there some way to use a single connector? (I'm guessing NOT the latter due to the port probably being bound by the connector process) Having said this and if my former idea is the correct way, for the JK connector entry in my Tomcat server.xml, is the redirectPort arbitrarily chosen? I have 8443 in for my single connector/site/host setup, would I simply use 8443-8446? Any input on this setup appreciated. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] Hello Colin, i'm unsure about advising on this because i'm running the non-threading apache 1.3.27. i have a very similar setup as u describe that works 4 me: i have 4 virtual hosts running on the public wire plus a dns server. the virtual hosts 4 defined in apache only w/ all https JDBCRealm protected directories serving jsp and servlets redirected from apache on port 8443. all https cgi-bin is redirected through port 443. otherwise all http is port 80 and 8080 for jsp/servlets. this config is pretty much out-of-the-box w/o any undue config on the tc side except for the JDBCRealm and a custom web.xml for each webapp both secure and non-secure. only server.xml editing done was basically to uncomment the connectors for port 8443 (ssl and non-ssl connectors). no extra stuff like Host tags or anything like that to confuse the issue. hope this helps, david. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: JK and multiple virtual hosts on Apache (repost)
Those all reference JK2, but I'm using JK (since it is suggested you use JK in production environments due to stability... not to mention the likely build problems I'll experience on Solaris 7 ). Going to hack away at this for a while and then try to compile JK2 again if all fails. And yes, I'm using IP-based Virtual Hosts on Apache. -Original Message- From: Robert L Sowders [SMTP:[EMAIL PROTECTED]] Sent: Monday, December 09, 2002 2:48 AM To: Tomcat Users List Subject: RE: JK and multiple virtual hosts on Apache (repost) This has come up quite often in the past. Search the archives for JkUriSet. When using apache/modssl make sure you use IP based virtual hosts. rls Madere, Colin [EMAIL PROTECTED] 12/08/2002 08:00 PM Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:RE: JK and multiple virtual hosts on Apache (repost) Thanks for the input, but I don't want any port numbers in the URLs for a number of reasons. Hence my use of the JK connector (that and only wanting to set up SSL through Apache and not Tomcat). I'm quite surprised no one else on this list has a setup similar to what I'm doing -Original Message- From: David Brown [SMTP:[EMAIL PROTECTED]] Sent: Friday, December 06, 2002 7:48 PM To:'Tomcat Users List' Subject: Re: JK and multiple virtual hosts on Apache (repost) Madere, Colin writes: I might have had some list trouble so I'm reposting this (since I got no responses so far). -Original Message- From: Madere, Colin [SMTP:[EMAIL PROTECTED]] Sent: Thursday, December 05, 2002 5:55 PM To: '[EMAIL PROTECTED]' Subject:4 Apache2 VirtualHosts + 1 Tomcat4 = ? JK connectors? Before I go off into JK configuration craziness, I thought I'd post my situation and see what rises to the top. What I have: 1 Apache 2.0.43 with 4 virutal hosts (3 w/ SSL) 1 Tomcat 4.12 (no virtual hosts as of yet) 1 JK 1.2.0 connector working properly with the non-SSL host from Apache What I want to do: Have any requests for apps running on Tomcat from any of the 4 virtual hosts to be redirected to the same Tomcat instance. This is mainly for simplicity since I will be using Tomcat Realms for login to determine what to do for a user in the app based on role. If I have to do 4 virtual hosts in Tomcat, then let me know :) Is the correct way to make this work with JK to create 4 Connector instances at, say, ports 8009-8012 in my tomcat server.xml, then set up 4 JK workers in workers.properties with each respective virtual host's domain name and redirection port? Or is there some way to use a single connector? (I'm guessing NOT the latter due to the port probably being bound by the connector process) Having said this and if my former idea is the correct way, for the JK connector entry in my Tomcat server.xml, is the redirectPort arbitrarily chosen? I have 8443 in for my single connector/site/host setup, would I simply use 8443-8446? Any input on this setup appreciated. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] Hello Colin, i'm unsure about advising on this because i'm running the non-threading apache 1.3.27. i have a very similar setup as u describe that works 4 me: i have 4 virtual hosts running on the public wire plus a dns server. the virtual hosts 4 defined in apache only w/ all https JDBCRealm protected directories serving jsp and servlets redirected from apache on port 8443. all https cgi-bin is redirected through port 443. otherwise all http is port 80 and 8080 for jsp/servlets. this config is pretty much out-of-the-box w/o any undue config on the tc side except for the JDBCRealm and a custom web.xml for each webapp both secure and non-secure. only server.xml editing done was basically to uncomment the connectors for port 8443 (ssl and non-ssl connectors). no extra stuff like Host tags or anything like that to confuse the issue. hope this helps, david. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED
RE: JK and multiple virtual hosts on Apache (repost)
Perhaps this document can help you a little. rls Madere, Colin [EMAIL PROTECTED] 12/09/2002 12:13 PM Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:RE: JK and multiple virtual hosts on Apache (repost) Those all reference JK2, but I'm using JK (since it is suggested you use JK in production environments due to stability... not to mention the likely build problems I'll experience on Solaris 7 ). Going to hack away at this for a while and then try to compile JK2 again if all fails. And yes, I'm using IP-based Virtual Hosts on Apache. -Original Message- From: Robert L Sowders [SMTP:[EMAIL PROTECTED]] Sent: Monday, December 09, 2002 2:48 AM To:Tomcat Users List Subject: RE: JK and multiple virtual hosts on Apache (repost) This has come up quite often in the past. Search the archives for JkUriSet. When using apache/modssl make sure you use IP based virtual hosts. rls Madere, Colin [EMAIL PROTECTED] 12/08/2002 08:00 PM Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:RE: JK and multiple virtual hosts on Apache (repost) Thanks for the input, but I don't want any port numbers in the URLs for a number of reasons. Hence my use of the JK connector (that and only wanting to set up SSL through Apache and not Tomcat). I'm quite surprised no one else on this list has a setup similar to what I'm doing -Original Message- From: David Brown [SMTP:[EMAIL PROTECTED]] Sent: Friday, December 06, 2002 7:48 PM To:'Tomcat Users List' Subject: Re: JK and multiple virtual hosts on Apache (repost) Madere, Colin writes: I might have had some list trouble so I'm reposting this (since I got no responses so far). -Original Message- From: Madere, Colin [SMTP:[EMAIL PROTECTED]] Sent: Thursday, December 05, 2002 5:55 PM To: '[EMAIL PROTECTED]' Subject:4 Apache2 VirtualHosts + 1 Tomcat4 = ? JK connectors? Before I go off into JK configuration craziness, I thought I'd post my situation and see what rises to the top. What I have: 1 Apache 2.0.43 with 4 virutal hosts (3 w/ SSL) 1 Tomcat 4.12 (no virtual hosts as of yet) 1 JK 1.2.0 connector working properly with the non-SSL host from Apache What I want to do: Have any requests for apps running on Tomcat from any of the 4 virtual hosts to be redirected to the same Tomcat instance. This is mainly for simplicity since I will be using Tomcat Realms for login to determine what to do for a user in the app based on role. If I have to do 4 virtual hosts in Tomcat, then let me know :) Is the correct way to make this work with JK to create 4 Connector instances at, say, ports 8009-8012 in my tomcat server.xml, then set up 4 JK workers in workers.properties with each respective virtual host's domain name and redirection port? Or is there some way to use a single connector? (I'm guessing NOT the latter due to the port probably being bound by the connector process) Having said this and if my former idea is the correct way, for the JK connector entry in my Tomcat server.xml, is the redirectPort arbitrarily chosen? I have 8443 in for my single connector/site/host setup, would I simply use 8443-8446? Any input on this setup appreciated. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] Hello Colin, i'm unsure about advising on this because i'm running the non-threading apache 1.3.27. i have a very similar setup as u describe that works 4 me: i have 4 virtual hosts running on the public wire plus a dns server. the virtual hosts 4 defined in apache only w/ all https JDBCRealm protected directories serving jsp and servlets redirected from apache on port 8443. all https cgi-bin is redirected through port 443. otherwise all http is port 80 and 8080 for jsp/servlets. this config is pretty much out-of-the-box w/o any undue config on the tc side except for the JDBCRealm and a custom web.xml for each webapp both secure and non-secure. only server.xml editing done was basically to uncomment the connectors for port 8443 (ssl and non-ssl connectors). no extra stuff like Host tags or anything like that to confuse the issue. hope this helps, david. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional
RE: JK and multiple virtual hosts on Apache (repost)
Any chance you can get the workers.properties file this person used for configuring JK? -Original Message- From: Robert L Sowders [SMTP:[EMAIL PROTECTED]] Sent: Monday, December 09, 2002 3:48 PM To: Tomcat Users List Cc: 'Tomcat Users List' Subject: RE: JK and multiple virtual hosts on Apache (repost) Perhaps this document can help you a little. rls Madere, Colin [EMAIL PROTECTED] 12/09/2002 12:13 PM Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:RE: JK and multiple virtual hosts on Apache (repost) Those all reference JK2, but I'm using JK (since it is suggested you use JK in production environments due to stability... not to mention the likely build problems I'll experience on Solaris 7 ). Going to hack away at this for a while and then try to compile JK2 again if all fails. And yes, I'm using IP-based Virtual Hosts on Apache. -Original Message- From: Robert L Sowders [SMTP:[EMAIL PROTECTED]] Sent: Monday, December 09, 2002 2:48 AM To:Tomcat Users List Subject: RE: JK and multiple virtual hosts on Apache (repost) This has come up quite often in the past. Search the archives for JkUriSet. When using apache/modssl make sure you use IP based virtual hosts. rls Madere, Colin [EMAIL PROTECTED] 12/08/2002 08:00 PM Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:RE: JK and multiple virtual hosts on Apache (repost) Thanks for the input, but I don't want any port numbers in the URLs for a number of reasons. Hence my use of the JK connector (that and only wanting to set up SSL through Apache and not Tomcat). I'm quite surprised no one else on this list has a setup similar to what I'm doing -Original Message- From: David Brown [SMTP:[EMAIL PROTECTED]] Sent: Friday, December 06, 2002 7:48 PM To:'Tomcat Users List' Subject: Re: JK and multiple virtual hosts on Apache (repost) Madere, Colin writes: I might have had some list trouble so I'm reposting this (since I got no responses so far). -Original Message- From: Madere, Colin [SMTP:[EMAIL PROTECTED]] Sent: Thursday, December 05, 2002 5:55 PM To: '[EMAIL PROTECTED]' Subject:4 Apache2 VirtualHosts + 1 Tomcat4 = ? JK connectors? Before I go off into JK configuration craziness, I thought I'd post my situation and see what rises to the top. What I have: 1 Apache 2.0.43 with 4 virutal hosts (3 w/ SSL) 1 Tomcat 4.12 (no virtual hosts as of yet) 1 JK 1.2.0 connector working properly with the non-SSL host from Apache What I want to do: Have any requests for apps running on Tomcat from any of the 4 virtual hosts to be redirected to the same Tomcat instance. This is mainly for simplicity since I will be using Tomcat Realms for login to determine what to do for a user in the app based on role. If I have to do 4 virtual hosts in Tomcat, then let me know :) Is the correct way to make this work with JK to create 4 Connector instances at, say, ports 8009-8012 in my tomcat server.xml, then set up 4 JK workers in workers.properties with each respective virtual host's domain name and redirection port? Or is there some way to use a single connector? (I'm guessing NOT the latter due to the port probably being bound by the connector process) Having said this and if my former idea is the correct way, for the JK connector entry in my Tomcat server.xml, is the redirectPort arbitrarily chosen? I have 8443 in for my single connector/site/host setup, would I simply use 8443-8446? Any input on this setup appreciated. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] Hello Colin, i'm unsure about advising on this because i'm running the non-threading apache 1.3.27. i have a very similar setup as u describe that works 4 me: i have 4 virtual hosts running on the public wire plus a dns server. the virtual hosts 4 defined in apache only w/ all https JDBCRealm protected directories serving jsp and servlets redirected from apache on port 8443. all https cgi-bin is redirected through port 443. otherwise all http is port 80 and 8080
RE: JK and multiple virtual hosts on Apache (repost)
When multiple hosting you usually auto-generate the file. John turners web site has instructions on how to do this. http://www.johnturner.com/howto/apache1-tomcat404-howto.html See step 3. rls Madere, Colin [EMAIL PROTECTED] 12/09/2002 02:04 PM Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:RE: JK and multiple virtual hosts on Apache (repost) Any chance you can get the workers.properties file this person used for configuring JK? -Original Message- From: Robert L Sowders [SMTP:[EMAIL PROTECTED]] Sent: Monday, December 09, 2002 3:48 PM To:Tomcat Users List Cc:'Tomcat Users List' Subject: RE: JK and multiple virtual hosts on Apache (repost) Perhaps this document can help you a little. rls Madere, Colin [EMAIL PROTECTED] 12/09/2002 12:13 PM Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:RE: JK and multiple virtual hosts on Apache (repost) Those all reference JK2, but I'm using JK (since it is suggested you use JK in production environments due to stability... not to mention the likely build problems I'll experience on Solaris 7 ). Going to hack away at this for a while and then try to compile JK2 again if all fails. And yes, I'm using IP-based Virtual Hosts on Apache. -Original Message- From: Robert L Sowders [SMTP:[EMAIL PROTECTED]] Sent: Monday, December 09, 2002 2:48 AM To:Tomcat Users List Subject: RE: JK and multiple virtual hosts on Apache (repost) This has come up quite often in the past. Search the archives for JkUriSet. When using apache/modssl make sure you use IP based virtual hosts. rls Madere, Colin [EMAIL PROTECTED] 12/08/2002 08:00 PM Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:RE: JK and multiple virtual hosts on Apache (repost) Thanks for the input, but I don't want any port numbers in the URLs for a number of reasons. Hence my use of the JK connector (that and only wanting to set up SSL through Apache and not Tomcat). I'm quite surprised no one else on this list has a setup similar to what I'm doing -Original Message- From: David Brown [SMTP:[EMAIL PROTECTED]] Sent: Friday, December 06, 2002 7:48 PM To:'Tomcat Users List' Subject: Re: JK and multiple virtual hosts on Apache (repost) Madere, Colin writes: I might have had some list trouble so I'm reposting this (since I got no responses so far). -Original Message- From: Madere, Colin [SMTP:[EMAIL PROTECTED]] Sent: Thursday, December 05, 2002 5:55 PM To: '[EMAIL PROTECTED]' Subject:4 Apache2 VirtualHosts + 1 Tomcat4 = ? JK connectors? Before I go off into JK configuration craziness, I thought I'd post my situation and see what rises to the top. What I have: 1 Apache 2.0.43 with 4 virutal hosts (3 w/ SSL) 1 Tomcat 4.12 (no virtual hosts as of yet) 1 JK 1.2.0 connector working properly with the non-SSL host from Apache What I want to do: Have any requests for apps running on Tomcat from any of the 4 virtual hosts to be redirected to the same Tomcat instance. This is mainly for simplicity since I will be using Tomcat Realms for login to determine what to do for a user in the app based on role. If I have to do 4 virtual hosts in Tomcat, then let me know :) Is the correct way to make this work with JK to create 4 Connector instances at, say, ports 8009-8012 in my tomcat server.xml, then set up 4 JK workers in workers.properties with each respective virtual host's domain name and redirection port? Or is there some way to use a single connector? (I'm guessing NOT the latter due to the port probably being bound by the connector process) Having said this and if my former idea is the correct way, for the JK connector entry in my Tomcat server.xml, is the redirectPort arbitrarily chosen? I have 8443 in for my single connector/site/host setup, would I simply use 8443-8446? Any input on this setup appreciated. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] Hello Colin, i'm unsure about
RE: JK and multiple virtual hosts on Apache (repost)
Thanks for the input, but I don't want any port numbers in the URLs for a number of reasons. Hence my use of the JK connector (that and only wanting to set up SSL through Apache and not Tomcat). I'm quite surprised no one else on this list has a setup similar to what I'm doing -Original Message- From: David Brown [SMTP:[EMAIL PROTECTED]] Sent: Friday, December 06, 2002 7:48 PM To: 'Tomcat Users List' Subject: Re: JK and multiple virtual hosts on Apache (repost) Madere, Colin writes: I might have had some list trouble so I'm reposting this (since I got no responses so far). -Original Message- From: Madere, Colin [SMTP:[EMAIL PROTECTED]] Sent: Thursday, December 05, 2002 5:55 PM To:'[EMAIL PROTECTED]' Subject: 4 Apache2 VirtualHosts + 1 Tomcat4 = ? JK connectors? Before I go off into JK configuration craziness, I thought I'd post my situation and see what rises to the top. What I have: 1 Apache 2.0.43 with 4 virutal hosts (3 w/ SSL) 1 Tomcat 4.12 (no virtual hosts as of yet) 1 JK 1.2.0 connector working properly with the non-SSL host from Apache What I want to do: Have any requests for apps running on Tomcat from any of the 4 virtual hosts to be redirected to the same Tomcat instance. This is mainly for simplicity since I will be using Tomcat Realms for login to determine what to do for a user in the app based on role. If I have to do 4 virtual hosts in Tomcat, then let me know :) Is the correct way to make this work with JK to create 4 Connector instances at, say, ports 8009-8012 in my tomcat server.xml, then set up 4 JK workers in workers.properties with each respective virtual host's domain name and redirection port? Or is there some way to use a single connector? (I'm guessing NOT the latter due to the port probably being bound by the connector process) Having said this and if my former idea is the correct way, for the JK connector entry in my Tomcat server.xml, is the redirectPort arbitrarily chosen? I have 8443 in for my single connector/site/host setup, would I simply use 8443-8446? Any input on this setup appreciated. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] Hello Colin, i'm unsure about advising on this because i'm running the non-threading apache 1.3.27. i have a very similar setup as u describe that works 4 me: i have 4 virtual hosts running on the public wire plus a dns server. the virtual hosts 4 defined in apache only w/ all https JDBCRealm protected directories serving jsp and servlets redirected from apache on port 8443. all https cgi-bin is redirected through port 443. otherwise all http is port 80 and 8080 for jsp/servlets. this config is pretty much out-of-the-box w/o any undue config on the tc side except for the JDBCRealm and a custom web.xml for each webapp both secure and non-secure. only server.xml editing done was basically to uncomment the connectors for port 8443 (ssl and non-ssl connectors). no extra stuff like Host tags or anything like that to confuse the issue. hope this helps, david. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
JK and multiple virtual hosts on Apache (repost)
I might have had some list trouble so I'm reposting this (since I got no responses so far). -Original Message- From: Madere, Colin [SMTP:[EMAIL PROTECTED]] Sent: Thursday, December 05, 2002 5:55 PM To: '[EMAIL PROTECTED]' Subject: 4 Apache2 VirtualHosts + 1 Tomcat4 = ? JK connectors? Before I go off into JK configuration craziness, I thought I'd post my situation and see what rises to the top. What I have: 1 Apache 2.0.43 with 4 virutal hosts (3 w/ SSL) 1 Tomcat 4.12 (no virtual hosts as of yet) 1 JK 1.2.0 connector working properly with the non-SSL host from Apache What I want to do: Have any requests for apps running on Tomcat from any of the 4 virtual hosts to be redirected to the same Tomcat instance. This is mainly for simplicity since I will be using Tomcat Realms for login to determine what to do for a user in the app based on role. If I have to do 4 virtual hosts in Tomcat, then let me know :) Is the correct way to make this work with JK to create 4 Connector instances at, say, ports 8009-8012 in my tomcat server.xml, then set up 4 JK workers in workers.properties with each respective virtual host's domain name and redirection port? Or is there some way to use a single connector? (I'm guessing NOT the latter due to the port probably being bound by the connector process) Having said this and if my former idea is the correct way, for the JK connector entry in my Tomcat server.xml, is the redirectPort arbitrarily chosen? I have 8443 in for my single connector/site/host setup, would I simply use 8443-8446? Any input on this setup appreciated. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: JK and multiple virtual hosts on Apache (repost)
Madere, Colin writes: I might have had some list trouble so I'm reposting this (since I got no responses so far). -Original Message- From: Madere, Colin [SMTP:[EMAIL PROTECTED]] Sent: Thursday, December 05, 2002 5:55 PM To: '[EMAIL PROTECTED]' Subject: 4 Apache2 VirtualHosts + 1 Tomcat4 = ? JK connectors? Before I go off into JK configuration craziness, I thought I'd post my situation and see what rises to the top. What I have: 1 Apache 2.0.43 with 4 virutal hosts (3 w/ SSL) 1 Tomcat 4.12 (no virtual hosts as of yet) 1 JK 1.2.0 connector working properly with the non-SSL host from Apache What I want to do: Have any requests for apps running on Tomcat from any of the 4 virtual hosts to be redirected to the same Tomcat instance. This is mainly for simplicity since I will be using Tomcat Realms for login to determine what to do for a user in the app based on role. If I have to do 4 virtual hosts in Tomcat, then let me know :) Is the correct way to make this work with JK to create 4 Connector instances at, say, ports 8009-8012 in my tomcat server.xml, then set up 4 JK workers in workers.properties with each respective virtual host's domain name and redirection port? Or is there some way to use a single connector? (I'm guessing NOT the latter due to the port probably being bound by the connector process) Having said this and if my former idea is the correct way, for the JK connector entry in my Tomcat server.xml, is the redirectPort arbitrarily chosen? I have 8443 in for my single connector/site/host setup, would I simply use 8443-8446? Any input on this setup appreciated. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] Hello Colin, i'm unsure about advising on this because i'm running the non-threading apache 1.3.27. i have a very similar setup as u describe that works 4 me: i have 4 virtual hosts running on the public wire plus a dns server. the virtual hosts 4 defined in apache only w/ all https JDBCRealm protected directories serving jsp and servlets redirected from apache on port 8443. all https cgi-bin is redirected through port 443. otherwise all http is port 80 and 8080 for jsp/servlets. this config is pretty much out-of-the-box w/o any undue config on the tc side except for the JDBCRealm and a custom web.xml for each webapp both secure and non-secure. only server.xml editing done was basically to uncomment the connectors for port 8443 (ssl and non-ssl connectors). no extra stuff like Host tags or anything like that to confuse the issue. hope this helps, david. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Virtual hosts with Apache 2.0.43 Tomcat 4.1.12 mod_jk2 on Linux
OK, just figured it out. Duh! I just had to add [uri:www.mydomain.tld/*] entry in addition to an existing [uri:mydomain.tld/*]. Now it works. :-) Ed - Original Message - From: Tomcat Newbie [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Wednesday, October 30, 2002 9:27 PM Subject: Virtual hosts with Apache 2.0.43 Tomcat 4.1.12 mod_jk2 on Linux I can't seem to figure out why my setup behaves differently when I access the same host with and without 'www.'. I used to run Apache 1.3.x and Tomcat 4.0.x, where my setup included aliases in Apache config file as well as two virtual hosts in Tomcat (with 'www.' and without) for each domain. Not sure if that was the way to do it, but it worked! My present setup, aside from upgraded software, has Aliases both in Apache and Tomcat config files, however such setup does not seem to help. Apache handles requests properly and forwards them to the same directory, however with 'www.' I get a directory listing, while without Tomcat picks up the request and processes it. What am I missing? Or do I have to setup two hosts for each domain again? Thanks, Ed -- To unsubscribe, e-mail: mailto:tomcat-user-unsubscribe;jakarta.apache.org For additional commands, e-mail: mailto:tomcat-user-help;jakarta.apache.org
Virtual hosts with Apache 2.0.43 Tomcat 4.1.12 mod_jk2 on Linux
I can't seem to figure out why my setup behaves differently when I access the same host with and without 'www.'. I used to run Apache 1.3.x and Tomcat 4.0.x, where my setup included aliases in Apache config file as well as two virtual hosts in Tomcat (with 'www.' and without) for each domain. Not sure if that was the way to do it, but it worked! My present setup, aside from upgraded software, has Aliases both in Apache and Tomcat config files, however such setup does not seem to help. Apache handles requests properly and forwards them to the same directory, however with 'www.' I get a directory listing, while without Tomcat picks up the request and processes it. What am I missing? Or do I have to setup two hosts for each domain again? Thanks, Ed -- To unsubscribe, e-mail: mailto:tomcat-user-unsubscribe;jakarta.apache.org For additional commands, e-mail: mailto:tomcat-user-help;jakarta.apache.org
virtual hosts in Apache and Tomcat conf files
What is the difference between specifying VirtualHost in apache conf file vs. Host element in Tomcat server.xml file? Does this depend on the connector used? Would using Host elements in server.xml remove dependency on what connector is used? Thanks, d. -- David Mossakowski [EMAIL PROTECTED] Instinet Corporation 212.310.7275 *** Disclaimer This message is intended only for the use of the Addressee and may contain information that is PRIVILEGED and/or CONFIDENTIAL or both. This email is intended only for the personal and confidential use of the recipient(s) named above. If the reader of this email is not an intended recipient, you have received this email in error and any review, dissemination, distribution or copying is strictly prohibited. If you have received this email in error, please notify the sender immediately by return mail and permanently deleting the copy you received. Thank you. *** -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Virtual Hosts: Connecting Apache 2.x to Tomcat 4.x (was mod_jk, WindowsXP, Tomcat 4.0.5 - issues)
It depends on your situation. With just a few VirtualHosts it's easier to have the client domains aliased to your interface. Here's a nice article that was posted here a couple of months ago. Matt Raible [EMAIL PROTECTED] 09/25/2002 08:29 PM Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:Virtual Hosts: Connecting Apache 2.x to Tomcat 4.x (was mod_jk, Windows XP, Tomcat 4.0.5 - issues) Sweet - I got it all working - now for a new question. What is the recommended setup for an ISP/ASP with one box? The article I modified my workers.properties after (http://www.ubeans.com/tomcat/) seems to be geared for load-balancing rather than an ISP/ASP situation. So I added the following and it seemed to achieve what I wanted. VirtualHost 192.168.0.3:80 ServerName localhost JkMount /*.jsp tomcat1 JkMount /servlet/* tomcat1 /VirtualHost # Second Virtual Host. Also accessible via HTTPS # VirtualHost 192.168.0.3:80 ServerName fatbastard JkMount /*.jsp tomcat2 JkMount /servlet/* tomcat2 /VirtualHost Where requests to http://localhost will go to tomcat 1 and http://fatbastard will go to tomcat 2. So if I now have to configure this on one Linux server for approx 5 (initially) different tomcat instances. So do you recommend setting up a bunch of customer1.mycompany.com aliases that go to the same IP, or stuffing a bunch of NIC cards into the one box? Thanks for all your help - this stuff is great, and folks on this list have made it very easy to setup. Matt -Original Message- From: Robert L Sowders [mailto:[EMAIL PROTECTED]] Sent: Wednesday, September 25, 2002 6:25 PM To: Tomcat Users List Subject: Re: mod_jk, Windows XP, Tomcat 4.0.5 - issues No, you should stay with 2.0.42. You need the dll from the Jakarta build web site, it has been built against 2.0.42. The one you downloaded has not been up-graded yet to work with 2.0.42 yet. http://jakarta.apache.org/builds/jakarta-tomcat-connectors/jk2 /nightly/win32/ rls Matt Raible [EMAIL PROTECTED] 09/25/2002 05:10 PM Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:mod_jk, Windows XP, Tomcat 4.0.5 - issues I'm trying to use one of the mod_jk.dll downloads at http://www.acg-gmbh.de/mod_jk/ and having no luck. The errors I'm getting is: 1. The Apache service named reported the following error: Apache.exe: module C:\jakarta-tomcat-connectors-4.0.4-src\jk\native\apache-2.0\mod_jk.c is not compatible with this version of Apache (found 20020628, need 20020903). . 2. The Apache service named reported the following error: Please contact the vendor for the correct version. . I have the following in http.conf # Using mod_jk.dll to redirect dynamic calls to Tomcat LoadModule jk_module modules/mod_jk.dll # # Configure mod_jk # JkWorkersFile conf/workers.properties JkLogFile logs/mod_jk.log JkLogLevel info And I've downloaded http://www.acg-gmbh.de/mod_jk/Release/mod_jk.dll. My configuration is Windows XP SP1, Apache 2.0.42, Tomcat 4.0.5. Looks like I need Apache 2.0.40 eh? Thanks, Matt -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] Web Hosting with Tomcat 4 and Apache Overview There are a number of configuration issues and security concerns which must be addressed when setting up Apache and Tomcat 4 for virtual hosting of customer sites in a web hosting environment. The major conerns are: 1. Delegating to untrusted customers maintenance of their applications without compromising server security. 2. Configuring Apache and Tomcat for virtual hosting. 3. Surviving poorly written web applications installed by customers. This includes fault tolerance and identifying which customer's web application is causing problems. 4. Mimimize the amount of hand holding or config changes the apache and tomcat system administrators have to make. This is written based on my experiences setting up this type of hosting environment on Sun Solaris hardware. Some of this will be specific to Solaris, but in general should work for almost any flavor of Unix. Unix accounts and groups The user tomcat was created for running tomcat, it should be created similar to the nobody account used for running Apache. The tomcat user is assigned to the group tomcat. The tomcat user is a member of group user. The group tomcat was created as the group the user tomcat is assigned to. The group user was created, this is the group customer ftp accounts are assigned to. The tomcat account is a member of this group so that both customers and tomcat can write files
Re: Virtual Hosts: Connecting Apache 2.x to Tomcat 4.x (was mod_jk, WindowsXP, Tomcat 4.0.5 - issues)
Also don't forget that with Apache2 you have access to mod_vhost_alias and mod_vhost_aliasIP which can simplify things greatly. Examples are in the Apache documentation that is installed with Apache 2.0.42 http://localhost/manual/mod/mod_vhost_alias.html http://localhost/manual/vhosts/mass.html See also http://localhost/manual/vhosts/name-based.html rls Matt Raible [EMAIL PROTECTED] 09/25/2002 08:29 PM Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:Virtual Hosts: Connecting Apache 2.x to Tomcat 4.x (was mod_jk, Windows XP, Tomcat 4.0.5 - issues) Sweet - I got it all working - now for a new question. What is the recommended setup for an ISP/ASP with one box? The article I modified my workers.properties after (http://www.ubeans.com/tomcat/) seems to be geared for load-balancing rather than an ISP/ASP situation. So I added the following and it seemed to achieve what I wanted. VirtualHost 192.168.0.3:80 ServerName localhost JkMount /*.jsp tomcat1 JkMount /servlet/* tomcat1 /VirtualHost # Second Virtual Host. Also accessible via HTTPS # VirtualHost 192.168.0.3:80 ServerName fatbastard JkMount /*.jsp tomcat2 JkMount /servlet/* tomcat2 /VirtualHost Where requests to http://localhost will go to tomcat 1 and http://fatbastard will go to tomcat 2. So if I now have to configure this on one Linux server for approx 5 (initially) different tomcat instances. So do you recommend setting up a bunch of customer1.mycompany.com aliases that go to the same IP, or stuffing a bunch of NIC cards into the one box? Thanks for all your help - this stuff is great, and folks on this list have made it very easy to setup. Matt -Original Message- From: Robert L Sowders [mailto:[EMAIL PROTECTED]] Sent: Wednesday, September 25, 2002 6:25 PM To: Tomcat Users List Subject: Re: mod_jk, Windows XP, Tomcat 4.0.5 - issues No, you should stay with 2.0.42. You need the dll from the Jakarta build web site, it has been built against 2.0.42. The one you downloaded has not been up-graded yet to work with 2.0.42 yet. http://jakarta.apache.org/builds/jakarta-tomcat-connectors/jk2 /nightly/win32/ rls Matt Raible [EMAIL PROTECTED] 09/25/2002 05:10 PM Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:mod_jk, Windows XP, Tomcat 4.0.5 - issues I'm trying to use one of the mod_jk.dll downloads at http://www.acg-gmbh.de/mod_jk/ and having no luck. The errors I'm getting is: 1. The Apache service named reported the following error: Apache.exe: module C:\jakarta-tomcat-connectors-4.0.4-src\jk\native\apache-2.0\mod_jk.c is not compatible with this version of Apache (found 20020628, need 20020903). . 2. The Apache service named reported the following error: Please contact the vendor for the correct version. . I have the following in http.conf # Using mod_jk.dll to redirect dynamic calls to Tomcat LoadModule jk_module modules/mod_jk.dll # # Configure mod_jk # JkWorkersFile conf/workers.properties JkLogFile logs/mod_jk.log JkLogLevel info And I've downloaded http://www.acg-gmbh.de/mod_jk/Release/mod_jk.dll. My configuration is Windows XP SP1, Apache 2.0.42, Tomcat 4.0.5. Looks like I need Apache 2.0.40 eh? Thanks, Matt -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Virtual Hosts: Connecting Apache 2.x to Tomcat 4.x (was mod_jk, Windows XP, Tomcat 4.0.5 - issues)
Sweet - I got it all working - now for a new question. What is the recommended setup for an ISP/ASP with one box? The article I modified my workers.properties after (http://www.ubeans.com/tomcat/) seems to be geared for load-balancing rather than an ISP/ASP situation. So I added the following and it seemed to achieve what I wanted. VirtualHost 192.168.0.3:80 ServerName localhost JkMount /*.jsp tomcat1 JkMount /servlet/* tomcat1 /VirtualHost # Second Virtual Host. Also accessible via HTTPS # VirtualHost 192.168.0.3:80 ServerName fatbastard JkMount /*.jsp tomcat2 JkMount /servlet/* tomcat2 /VirtualHost Where requests to http://localhost will go to tomcat 1 and http://fatbastard will go to tomcat 2. So if I now have to configure this on one Linux server for approx 5 (initially) different tomcat instances. So do you recommend setting up a bunch of customer1.mycompany.com aliases that go to the same IP, or stuffing a bunch of NIC cards into the one box? Thanks for all your help - this stuff is great, and folks on this list have made it very easy to setup. Matt -Original Message- From: Robert L Sowders [mailto:[EMAIL PROTECTED]] Sent: Wednesday, September 25, 2002 6:25 PM To: Tomcat Users List Subject: Re: mod_jk, Windows XP, Tomcat 4.0.5 - issues No, you should stay with 2.0.42. You need the dll from the Jakarta build web site, it has been built against 2.0.42. The one you downloaded has not been up-graded yet to work with 2.0.42 yet. http://jakarta.apache.org/builds/jakarta-tomcat-connectors/jk2 /nightly/win32/ rls Matt Raible [EMAIL PROTECTED] 09/25/2002 05:10 PM Please respond to Tomcat Users List To: 'Tomcat Users List' [EMAIL PROTECTED] cc: Subject:mod_jk, Windows XP, Tomcat 4.0.5 - issues I'm trying to use one of the mod_jk.dll downloads at http://www.acg-gmbh.de/mod_jk/ and having no luck. The errors I'm getting is: 1. The Apache service named reported the following error: Apache.exe: module C:\jakarta-tomcat-connectors-4.0.4-src\jk\native\apache-2.0\mod_jk.c is not compatible with this version of Apache (found 20020628, need 20020903). . 2. The Apache service named reported the following error: Please contact the vendor for the correct version. . I have the following in http.conf # Using mod_jk.dll to redirect dynamic calls to Tomcat LoadModule jk_module modules/mod_jk.dll # # Configure mod_jk # JkWorkersFile conf/workers.properties JkLogFile logs/mod_jk.log JkLogLevel info And I've downloaded http://www.acg-gmbh.de/mod_jk/Release/mod_jk.dll. My configuration is Windows XP SP1, Apache 2.0.42, Tomcat 4.0.5. Looks like I need Apache 2.0.40 eh? Thanks, Matt -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Virtual hosts using Apache 2.0.40, Tomcat 4.1.10 and mod_jk2
Can anyone please provide a working configuration for Apache 2.0.40 virtual hosts with Tomcat 4.1.10 (running in-process) and mod_jk2? Defining a virtual host in Apache, redirecting to Tomcat (via workers.properties), defining a virtual host and context in the server.xml file isn't working somehow. The examples example works just fine when defined without a virtual host in Apache. When defined as a virtual host, Tomcat seems unable to find Java classes and import files. No errors are written anywhere (that I can find) and the jsp executes ok, but any Java classes are not called. If I run the date example form a non virtual host Apache, everything works. When running the same example with an Apache virtual host set up, the date jsp is executed but the date class it calls is not invoked. The date example boiler plate text is displayed without values. Any help would be greatly appreciated. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Virtual hosts using Apache 2.0.40, Tomcat 4.1.10 and mod_jk2
Hi I'm having the same trouble using Apache 2.0.40, Tomcat 4.1.10 and mod_jk2 with virtual hosts It works without problem without v.h., but the only doc I've found about mod_jk2 doesn't talk about v.h.( http://www.apache.org/~jfclere/jk2_docs/configweb.html) Maybe mod_jk2 isn't ready for v.h ? (I don't have any trouble with the same configuration but mod_jk instead of mod_jk2) Dom - Original Message - From: Short, Dave [EMAIL PROTECTED] To: 'Tomcat Users List' [EMAIL PROTECTED] Sent: Tuesday, September 17, 2002 7:30 PM Subject: Virtual hosts using Apache 2.0.40, Tomcat 4.1.10 and mod_jk2 Can anyone please provide a working configuration for Apache 2.0.40 virtual hosts with Tomcat 4.1.10 (running in-process) and mod_jk2? Defining a virtual host in Apache, redirecting to Tomcat (via workers.properties), defining a virtual host and context in the server.xml file isn't working somehow. The examples example works just fine when defined without a virtual host in Apache. When defined as a virtual host, Tomcat seems unable to find Java classes and import files. No errors are written anywhere (that I can find) and the jsp executes ok, but any Java classes are not called. If I run the date example form a non virtual host Apache, everything works. When running the same example with an Apache virtual host set up, the date jsp is executed but the date class it calls is not invoked. The date example boiler plate text is displayed without values. Any help would be greatly appreciated. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: Virtual hosts using Apache 2.0.40, Tomcat 4.1.10 and mod_jk2
For reference, the official URL is here: http://jakarta.apache.org/tomcat/tomcat-4.1-doc/jk2/jk2/configweb.html It's the same page, but just in case the other one gets moved out of a user dir, the official version would be the one above. John -Original Message- From: Dom [mailto:[EMAIL PROTECTED]] Sent: Tuesday, September 17, 2002 4:16 PM To: Tomcat Users List Subject: Re: Virtual hosts using Apache 2.0.40, Tomcat 4.1.10 and mod_jk2 Hi I'm having the same trouble using Apache 2.0.40, Tomcat 4.1.10 and mod_jk2 with virtual hosts It works without problem without v.h., but the only doc I've found about mod_jk2 doesn't talk about v.h.( http://www.apache.org/~jfclere/jk2_docs/configweb.html) Maybe mod_jk2 isn't ready for v.h ? (I don't have any trouble with the same configuration but mod_jk instead of mod_jk2) Dom -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
virtual hosts and apache
I know how i must to configure the virtual hosts in apache but in the tomcat server.xml i don't know. 1.- can any body send me one sample? 2.- in the apache httpd.conf file, in the virtual host description i have the normal virtual host description but for the interaction with tomcat, must i add some lines? which lines are these?(for the integration with tomcat) i am running in one linux platform (SuSE 8). thanks -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: virtual hosts and apache
Hi there ! Which connectro are you using? If it's mod_jk, you can use the autoconf feature, so you don't have to worry about the virtual host configuration in httpd.conf. Just add Include path to tomcat/conf/auto/mod_jk.conf to httpd.conf and something like Listener className=org.apache.ajp.tomcat4.config.ApacheConfig jkDebug=info modJk=/opt/apache2/modules/mod_jk.so / to the Server section of your server.xml file and something like Listener className=org.apache.ajp.tomcat4.config.ApacheConfig append=true forwardAll=true noRoot=false jkDebug=info / to the Host section of your server.xml file You probably have to adjust the parameters for the Listener directive, for a description of the parameters have a look at http://jakarta.apache.org/tomcat/tomcat-3.3-doc/mod_jk-howto.html It's for tomcat 3.3, but I am using 4.0.4 and it's still useful. Now, everytime you start tomcat, the file path to tomcat/conf/auto/mod_jk.conf will be created and includes the neccessary configuration for apache Ciao, Branko. Am Donnerstag, 5. September 2002 08:16 schrieb Dionisio Ruiz de Zarate: I know how i must to configure the virtual hosts in apache but in the tomcat server.xml i don't know. 1.- can any body send me one sample? 2.- in the apache httpd.conf file, in the virtual host description i have the normal virtual host description but for the interaction with tomcat, must i add some lines? which lines are these?(for the integration with tomcat) i am running in one linux platform (SuSE 8). thanks -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: virtual hosts and apache
I am using tomcat 4.0.2 or 1. web_apps can you help me? thanks Branko Kannenberg Hi there ! Which connectro are you using? If it's mod_jk, you can use the autoconf feature, so you don't have to worry about the virtual host configuration in httpd.conf. Just add Include path to tomcat/conf/auto/mod_jk.conf to httpd.conf and something like Listener className=org.apache.ajp.tomcat4.config.ApacheConfig jkDebug=info modJk=/opt/apache2/modules/mod_jk.so / to the Server section of your server.xml file and something like Listener className=org.apache.ajp.tomcat4.config.ApacheConfig append=true forwardAll=true noRoot=false jkDebug=info / to the Host section of your server.xml file You probably have to adjust the parameters for the Listener directive, for a description of the parameters have a look at http://jakarta.apache.org/tomcat/tomcat-3.3-doc/mod_jk-howto.html It's for tomcat 3.3, but I am using 4.0.4 and it's still useful. Now, everytime you start tomcat, the file path to tomcat/conf/auto/mod_jk.conf will be created and includes the neccessary configuration for apache Ciao, Branko. Am Donnerstag, 5. September 2002 08:16 schrieb Dionisio Ruiz de Zarate: I know how i must to configure the virtual hosts in apache but in the tomcat server.xml i don't know. 1.- can any body send me one sample? 2.- in the apache httpd.conf file, in the virtual host description i have the normal virtual host description but for the interaction with tomcat, must i add some lines? which lines are these?(for the integration with tomcat) i am running in one linux platform (SuSE 8). thanks -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: virtual hosts and apache
Hi there ! I'm sorry, I have no knowledge about the webapp connector. You could switch to the mod_jk connector, it has advantages like load balancing and serving only dynamic content. But you have to compile it for yourself to get a version which works which the apache version you have. The compiling is a bit tricky but can be done. There are numerous mails in this list about compiling the connector package. Two very helpful howtos can be found at http://www.pubbitch.org/jboss/mod_jk2.html and http://www.johnturner.com/howto/apache-tomcat-howto.html Ciao, Branko. Am Donnerstag, 5. September 2002 11:00 schrieb Dionisio Ruiz de Zarate: I am using tomcat 4.0.2 or 1. web_apps can you help me? thanks Branko Kannenberg Hi there ! Which connectro are you using? If it's mod_jk, you can use the autoconf feature, so you don't have to worry about the virtual host configuration in httpd.conf. Just add Include path to tomcat/conf/auto/mod_jk.conf to httpd.conf and something like Listener className=org.apache.ajp.tomcat4.config.ApacheConfig jkDebug=info modJk=/opt/apache2/modules/mod_jk.so / to the Server section of your server.xml file and something like Listener className=org.apache.ajp.tomcat4.config.ApacheConfig append=true forwardAll=true noRoot=false jkDebug=info / to the Host section of your server.xml file You probably have to adjust the parameters for the Listener directive, for a description of the parameters have a look at http://jakarta.apache.org/tomcat/tomcat-3.3-doc/mod_jk-howto.html It's for tomcat 3.3, but I am using 4.0.4 and it's still useful. Now, everytime you start tomcat, the file path to tomcat/conf/auto/mod_jk.conf will be created and includes the neccessary configuration for apache Ciao, Branko. Am Donnerstag, 5. September 2002 08:16 schrieb Dionisio Ruiz de Zarate: I know how i must to configure the virtual hosts in apache but in the tomcat server.xml i don't know. 1.- can any body send me one sample? 2.- in the apache httpd.conf file, in the virtual host description i have the normal virtual host description but for the interaction with tomcat, must i add some lines? which lines are these?(for the integration with tomcat) i am running in one linux platform (SuSE 8). thanks -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: virtual hosts and apache
Hosts are configured in the Host element of server.xml. For demonstration purposes, the Host element with the name localhost in server.xml is a virtual host. Copy all of that, and change the name parameter in the Host element to match Apache's VirtualHost. John -Original Message- From: Dionisio Ruiz de Zarate [mailto:[EMAIL PROTECTED]] Sent: Thursday, September 05, 2002 2:16 AM To: [EMAIL PROTECTED] Subject: virtual hosts and apache I know how i must to configure the virtual hosts in apache but in the tomcat server.xml i don't know. 1.- can any body send me one sample? 2.- in the apache httpd.conf file, in the virtual host description i have the normal virtual host description but for the interaction with tomcat, must i add some lines? which lines are these?(for the integration with tomcat) i am running in one linux platform (SuSE 8). thanks -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: virtual hosts and apache
apache and tomcat 4.0.1, web_apps can you help me? thanks - Original Message - From: Branko Kannenberg [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Thursday, September 05, 2002 11:55 AM Subject: Re: virtual hosts and apache Hi there ! Which connectro are you using? If it's mod_jk, you can use the autoconf feature, so you don't have to worry about the virtual host configuration in httpd.conf. Just add Include path to tomcat/conf/auto/mod_jk.conf to httpd.conf and something like Listener className=org.apache.ajp.tomcat4.config.ApacheConfig jkDebug=info modJk=/opt/apache2/modules/mod_jk.so / to the Server section of your server.xml file and something like Listener className=org.apache.ajp.tomcat4.config.ApacheConfig append=true forwardAll=true noRoot=false jkDebug=info / to the Host section of your server.xml file You probably have to adjust the parameters for the Listener directive, for a description of the parameters have a look at http://jakarta.apache.org/tomcat/tomcat-3.3-doc/mod_jk-howto.html It's for tomcat 3.3, but I am using 4.0.4 and it's still useful. Now, everytime you start tomcat, the file path to tomcat/conf/auto/mod_jk.conf will be created and includes the neccessary configuration for apache Ciao, Branko. Am Donnerstag, 5. September 2002 08:16 schrieb Dionisio Ruiz de Zarate: I know how i must to configure the virtual hosts in apache but in the tomcat server.xml i don't know. 1.- can any body send me one sample? 2.- in the apache httpd.conf file, in the virtual host description i have the normal virtual host description but for the interaction with tomcat, must i add some lines? which lines are these?(for the integration with tomcat) i am running in one linux platform (SuSE 8). thanks -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
