Re: Is it possible to send a 'keep-alive' packet back to client session every x seconds?
Thanks everyone, development tells me that their going to build the function into the application. trying to build custom kernels and then using a tcp_keepalive would be a logistic nightmare. Cheers, Matt On Fri, Mar 28, 2014 at 12:53 AM, Christopher Schultz < ch...@christopherschultz.net> wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA256 > > Mark, > > On 3/27/14, 5:38 AM, Mark Thomas wrote: > > On 27/03/2014 03:08, Matthew Turany wrote: > >> Is it possible to configure either apache or tomcat to send a > >> packet every x number of seconds so that at the client end the > >> gateway thinks the session is still active and will keep the > >> connection open, or is this something best put into the actual > >> web app? > > > > http://tomcat.apache.org/connectors-doc/reference/workers.html > > socket_keepalive > > > > You'll need to configure the OS to send the packets frequently > > enough. > > > > Alternatively, change the application design: - One request to > > trigger generation of the report - N requests to retrieve report > > which returns either "still processing" (maybe with an ETA) or > > "here it is". > > +1 > > I believe this is a better design in the long-run. It also allows you > to do things like off-line processing of batches without changing your UI. > > Another thing you could do is simulate the above by using a > report-builder thread launched from your servlet, and then have your > request-processing thread to a flush() on the response (causing > chunked encoding to be used), then sleep for some amount of time > (maybe 1-5 seconds), then check the status of the report, then flush() > again (not sure if it will keep emitting 0-length chunks if you flush > over and over again), then sleep again. > > This seems like a perfect use case for async processing. > > - -chris > -BEGIN PGP SIGNATURE- > Version: GnuPG v1 > Comment: GPGTools - http://gpgtools.org > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iQIcBAEBCAAGBQJTNFd6AAoJEBzwKT+lPKRYANwP/Rx3W5KQQnLzMx/xEY41cix0 > JuAEGxZVQyX5LDwLlB5iivIAGdVqLZxXGP/4on/sIgl+XjC59hkU4N77oLokb3Cl > heAgUmR9VA4KsUTMeSJmN0Km5lMOzCv3c+Ru5fAjSpsNKgp2SjsitpdGgRfebd1y > djQfemWIkC6bBHjtW4PbwGkva9Kny8FVx2Ius8f6V+jKcHGLGztWIfy99rR0Oya3 > 2dP/JboBPH0PYW19Jhor7qM7IMJXJjdRSswnBc63e7runvw8hA1DD3KDW0mHceVo > Q4Q0WW1zRaT1DOzkmQhOs4H68ev20EjV9DZu8Md17kJVrwkeFMN+GGNppLeivzdK > UZHkEWbZjDZRcIGR0iEQQZGLVCRMImNsm+fBoO6piXrr8UFpzMUqXLMiSuD3Woab > GFtvydUBuO4gyxAHXh2yW+XJ1iZBSfigUBvTZUKOyS1sEURBKmgTopySuJaKPhYN > OMYCQ8e5MKbcxl09qp7JRg+H/jfIr9NBgakWrQRe4R1Pox1doMaNZsJufwpkbxH2 > 0CKNuLClIrvQC/iw5D7McB0o5PY5brOMGzWfdb6Psgnrq/4FB3QDdSCbIaQ8JF+E > GfRZ5D2VE73ueb8dYiElA0t3fEV0DSdqOtxR40IwROlpR6My7HBUVgy/7dxkxEg7 > xXj/B0T5nbShYxZrlw3S > =RtBD > -END PGP SIGNATURE- > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
Re: Tomcat under load && frontend reverse proxy timeouts
On 27/03/2014 12:39 PM, "Frederik Nosi" wrote: > > Hi all, > > Having to deal with slow applications deployed under tomcat, with a reverse proxy in front, frequently i've noticed that even when the frontend timeouts and closes it's part of the TCP connection, the Tomcat thread processing the request goes on and on till it finishes. Is there a way to make the proccessing thread stop when the frontend connection get's closed? > > > Thanks in advance, > > Frederik > What kind of application is this? What is the reason that the thread takes longer than expected? Is it just the load on the app server or its waiting on the backend database maybe? If load then for sure you can limit the tomcat connector threads and the accept queue to reduce it and add some more app servers. If backend connection then you can sync the client timeout and the db connection timeout.
RE: Tomcat 8 Production read?
I'll help with whatever I can. Thanks! From: Christopher Schultz Sent: Thursday, March 27, 2014 12:27 PM To: Tomcat Users List Subject: Re: Tomcat 8 Production read? -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Dennis, On 3/27/14, 12:14 PM, Dennis Ross wrote: > Is Tomcat 8 enterprise production ready? > > Meaning can I use this reliably for clients or should I wait a > bit? There has not been a Tomcat 8 release voted as "stable" yet. The current release under a vote (8.0.5) is likely to pass as "beta". IIRC, Apache JIRA is running on top of Tomcat 8, so it *is* getting some in-the-wild play-time. IMO it's really close, except maybe for the NIO.2 connector which is completely new and experimental anyway. Looks like there might be a bug with sendfile in the 8.0.5 build, so you might want to disable that as well. It's certainly worth getting into your testing environment. Let us know if you find anything wrong with it ;) - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJTNFF+AAoJEBzwKT+lPKRYRnsP/3en7hhvWMD0yYwzVWB1r5QV IE41VRcEIwHsT2Dr90Wv13Hin78fVH3ndt8QZi1CEoUqOEu8Zd7Mijbkfg1aMYD5 mHDDQNA+kGtl9t7kvcPyGte0WiQYJViyx8clebb38nzitnv9lCaB0n8SgWUGxgdo a+7ACk+3IwXmuDRXHG9ntvTo3amOai1O5KMgEf4IvU3hoyBAHzffg8I2NU8KwizL HHJcG6GL9v9YGRNZwaIi5wgkKSXavY0+gtR3BHrccudO2T9T1A9I1i5WZ5uQg6ij lDCABXPMIWXttktdbyVv+nMyuY3IdJUF5EMbmx4CQ4JGiYqVE4m42qCE36/xxSev M37ZHCA1glZ7SCr3PB8dDctHKBudHwMZbJYwfB1gVdDeBdep1KTHOc95SYhiILd6 MkuLbmE3HKVQmKhGc2ipdcukRwmqncsBm1cOM4sb2MnJW5E9mT3BpmclsxYmmoh0 oX0QEH9I2slRqoVl+dKRH+cYS/X49Q5AdIywFka16M/0yo6S8ttv6k/inbTZjagN oqoXDwoZDrI5hxjwmHh7u0d42f91SNx6VySCJPzUjHdfwq/I4eAa6MJ/ZGFt5zeA 0R3wz267/kuq/MIEIYWWnJH2bPQIsZr3EF+FDNUOQCL4ObBCbYnSeDuAdGm9UOze jbHipXYwm4rCK6WGgiBp =A2iA -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Why Tomcat crashes
On Mar 27, 2014, at 3:01 PM, Daniel Mikusa wrote: > On Mar 27, 2014, at 2:10 PM, wangke wrote: > >> >> >>> Subject: Re: Why Tomcat crashes >>> From: dmik...@gopivotal.com >>> Date: Thu, 27 Mar 2014 07:24:38 -0400 >>> To: users@tomcat.apache.org >>> >>> On Mar 27, 2014, at 2:18 AM, wangke wrote: >>> Hi All: Recently I've encountered a very strange problem, I managed to crash tomcat entirely >>> >>> We need more specifics here. What exactly happens when it crashes? Has the >>> process exited? Do you see a JVM crash dump file? Is the process still >>> running, but your app is not responding (or responding with 404’s)? or >>> something else? >> >> First of all, I can no longer connect to the root directory for tomcat home >> page and secondly, I do have a JVM crash dump file. > > Since the JVM is crashing, it’s unlikely to be a Tomcat issue. Probably > something with the native code. If you can include the dump file output > here, perhaps someone can give you some clues as to why it’s crashing. > > Dan > > PS. the list doesn’t do well with attachments, it often strips them off. If > you just copy and paste stuff inline you should be safe. Disregard that. I see the attachment on your last email. Surprisingly it made it through. Dan > >> >> >> >>> with my application for a few times. Personally, I am quite suspicious about the the settings of a shared library libswipl. What I did according to https://code.google.com/p/javanaproche/wiki/HowToJPL >>> >>> If you’re seeing the process exit, it could be due to a crash in this >>> native code. Generally when this happens you’ll get a JVM crash dump file >>> in the working directory (or the location of -XX:ErrorFile). You’ll want to >>> locate this file as it will contain information about what happened. >> >> Please see the file attached. >> >> >> >>> is I have Java.library.path point to libswipl for a jar file called JPL (a bidirectional interface between Java and Prolog since I need to run some simple Prolog rules) and then when I start calling JPL provided interface in my application code, the following exceptions are thrown: Can anybody help me to figure out what happened exactly, BTW, Tomcat is not crashing all the time but fairly frequent though. Thanks very much. WARNING: Error while removing context [/XX] java.lang.NoClassDefFoundError: org/apache/struts2/util/ObjectFactoryDestroyable at org.apache.struts2.dispatcher.Dispatcher.cleanup(Dispatcher.java:265) at org.apache.struts2.dispatcher.ng.PrepareOperations.cleanupDispatcher(PrepareOperations.java:188) at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.destroy(StrutsPrepareAndExecuteFilter.java:100) at org.apache.catalina.core.ApplicationFilterConfig.release(ApplicationFilterConfig.java:358) at org.apache.catalina.core.StandardContext.filterStop(StandardContext.java:4107) at org.apache.catalina.core.StandardContext.stop(StandardContext.java:4876) at org.apache.catalina.core.ContainerBase.removeChild(ContainerBase.java:936) at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1212) at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1382) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:306) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142) at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1389) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1653) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1662) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1642) at java.lang.Thread.run(Thread.java:662) Caused by: java.lang.ClassNotFoundException: org.apache.struts2.util.ObjectFactoryDestroyable at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) ... 16 more >>> >>> This looks like you’re missing a JAR file, in particular the one that >>> contains “org.apache.struts2.util.ObjectFactoryDestroyable”. Although I’m >>> not sure this is critical as it appears to be happening as Tomcat is >>> shutting down. >>> >>> Dan >>> Mar 26, 2014 6:18:51 PM org.apache.catalina.core.ContainerBase stop INFO: Container org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/XX].[jsp] has not been started Mar 26, 2014 6:18:51 PM org.apache.catalina.core.ContainerBase stop I
Re: Why Tomcat crashes
On Mar 27, 2014, at 2:10 PM, wangke wrote: > > > > Subject: Re: Why Tomcat crashes > > From: dmik...@gopivotal.com > > Date: Thu, 27 Mar 2014 07:24:38 -0400 > > To: users@tomcat.apache.org > > > > On Mar 27, 2014, at 2:18 AM, wangke wrote: > > > > > > > > > > > > > > Hi All: > > > Recently I've encountered a very strange problem, I managed to crash > > > tomcat entirely > > > > We need more specifics here. What exactly happens when it crashes? Has the > > process exited? Do you see a JVM crash dump file? Is the process still > > running, but your app is not responding (or responding with 404’s)? or > > something else? > > First of all, I can no longer connect to the root directory for tomcat home > page and secondly, I do have a JVM crash dump file. Since the JVM is crashing, it’s unlikely to be a Tomcat issue. Probably something with the native code. If you can include the dump file output here, perhaps someone can give you some clues as to why it’s crashing. Dan PS. the list doesn’t do well with attachments, it often strips them off. If you just copy and paste stuff inline you should be safe. > > > > > > > > with my application for a few times. Personally, I am quite suspicious > > > about the the settings of a shared library libswipl. What I did according > > > to > > > https://code.google.com/p/javanaproche/wiki/HowToJPL > > > > If you’re seeing the process exit, it could be due to a crash in this > > native code. Generally when this happens you’ll get a JVM crash dump file > > in the working directory (or the location of -XX:ErrorFile). You’ll want to > > locate this file as it will contain information about what happened. > > Please see the file attached. > > > > > > > > is I have Java.library.path point to libswipl for a jar file called JPL > > > (a bidirectional interface between Java and Prolog since I need to run > > > some simple Prolog rules) and then when I start calling JPL provided > > > interface in my application code, the following exceptions are thrown: > > > Can anybody help me to figure out what happened exactly, BTW, Tomcat is > > > not crashing all the time but fairly frequent though. > > > Thanks very much. > > > > > > > > > > > > > > > > > > > > > > > > > > > WARNING: Error while removing context [/XX] > > > java.lang.NoClassDefFoundError: > > > org/apache/struts2/util/ObjectFactoryDestroyable > > > at org.apache.struts2.dispatcher.Dispatcher.cleanup(Dispatcher.java:265) > > > at > > > org.apache.struts2.dispatcher.ng.PrepareOperations.cleanupDispatcher(PrepareOperations.java:188) > > > at > > > org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.destroy(StrutsPrepareAndExecuteFilter.java:100) > > > at > > > org.apache.catalina.core.ApplicationFilterConfig.release(ApplicationFilterConfig.java:358) > > > at > > > org.apache.catalina.core.StandardContext.filterStop(StandardContext.java:4107) > > > at > > > org.apache.catalina.core.StandardContext.stop(StandardContext.java:4876) > > > at > > > org.apache.catalina.core.ContainerBase.removeChild(ContainerBase.java:936) > > > at > > > org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1212) > > > at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1382) > > > at > > > org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:306) > > > at > > > org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142) > > > at > > > org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1389) > > > at > > > org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1653) > > > at > > > org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1662) > > > at > > > org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1642) > > > at java.lang.Thread.run(Thread.java:662) > > > Caused by: java.lang.ClassNotFoundException: > > > org.apache.struts2.util.ObjectFactoryDestroyable > > > at > > > org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) > > > at > > > org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) > > > ... 16 more > > > > This looks like you’re missing a JAR file, in particular the one that > > contains “org.apache.struts2.util.ObjectFactoryDestroyable”. Although I’m > > not sure this is critical as it appears to be happening as Tomcat is > > shutting down. > > > > Dan > > > > > Mar 26, 2014 6:18:51 PM org.apache.catalina.core.ContainerBase stop > > > INFO: Container > > > org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/XX].[jsp] > > > has not been started > > > Mar 26, 2014 6:18:51 PM org.apache.catalina.core.ContainerBase stop > > > INFO: Container > > > org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/XX].[default] > > > has
RE: Why Tomcat crashes
> Date: Thu, 27 Mar 2014 12:20:28 -0400 > From: ch...@christopherschultz.net > To: users@tomcat.apache.org > Subject: Re: Why Tomcat crashes > > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA256 > > Wangke, > > On 3/27/14, 2:18 AM, wangke wrote: > > Hi All: Recently I've encountered a very strange problem, I managed > > to crash tomcat entirely with my application for a few times. > > Personally, I am quite suspicious about the the settings of a > > shared library libswipl. What I did according to > > https://code.google.com/p/javanaproche/wiki/HowToJPL is I have > > Java.library.path point to libswipl for a jar file called JPL (a > > bidirectional interface between Java and Prolog since I need to run > > some simple Prolog rules) and then when I start calling JPL > > provided interface in my application code, the following exceptions > > are thrown: > > That sounds like a lot of fun! > > > Can anybody help me to figure out what happened exactly, BTW, > > Tomcat is not crashing all the time but fairly frequent though. > > Thanks very much. > > > > WARNING: Error while removing context [/XX] > > java.lang.NoClassDefFoundError: > > org/apache/struts2/util/ObjectFactoryDestroyable at > > org.apache.struts2.dispatcher.Dispatcher.cleanup(Dispatcher.java:265) > > > > > at > org.apache.struts2.dispatcher.ng.PrepareOperations.cleanupDispatcher(PrepareOperations.java:188) > > at > > org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.destroy(StrutsPrepareAndExecuteFilter.java:100) > > > > > at > org.apache.catalina.core.ApplicationFilterConfig.release(ApplicationFilterConfig.java:358) > > at > > org.apache.catalina.core.StandardContext.filterStop(StandardContext.java:4107) > > > > > at org.apache.catalina.core.StandardContext.stop(StandardContext.java:4876) > > at > > org.apache.catalina.core.ContainerBase.removeChild(ContainerBase.java:936) > > > > > at > org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1212) > > at > > org.apache.catalina.startup.HostConfig.check(HostConfig.java:1382) > > at > > org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:306) > > > > > at > org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142) > > at > > org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1389) > > > > > at > org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1653) > > at > > org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1662) > > > > > at > org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1642) > > at java.lang.Thread.run(Thread.java:662) Caused by: > > java.lang.ClassNotFoundException: > > org.apache.struts2.util.ObjectFactoryDestroyable at > > org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) > > > > > at > org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) > > ... 16 more Mar 26, 2014 6:18:51 PM > > org.apache.catalina.core.ContainerBase stop INFO: Container > > org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/XX].[jsp] > > has not been started Mar 26, 2014 6:18:51 PM > > org.apache.catalina.core.ContainerBase stop INFO: Container > > org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/XX].[default] > > has not been started Mar 26, 2014 6:18:51 PM > > org.apache.catalina.startup.HostConfig checkResources WARNING: > > Error during context [/XX] destroy > > java.lang.NoClassDefFoundError: > > org/apache/struts2/util/ObjectFactoryDestroyable at > > org.apache.struts2.dispatcher.Dispatcher.cleanup(Dispatcher.java:265) > > > > > at > org.apache.struts2.dispatcher.ng.PrepareOperations.cleanupDispatcher(PrepareOperations.java:188) > > at > > org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.destroy(StrutsPrepareAndExecuteFilter.java:100) > > > > > at > org.apache.catalina.core.ApplicationFilterConfig.release(ApplicationFilterConfig.java:358) > > at > > org.apache.catalina.core.StandardContext.filterStop(StandardContext.java:4107) > > > > > at org.apache.catalina.core.StandardContext.stop(StandardContext.java:4876) > > at > > org.apache.catalina.core.ContainerBase.destroy(ContainerBase.java:1176) > > > > > at > org.apache.catalina.core.StandardContext.destroy(StandardContext.java:4976) > > at > > org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1219) > > > > > at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1382) > > at > > org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:306) > > > > > at > org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142) > > at > > org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1389) > > > > > at > org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.
Re: Realm ldaps
On Thu, Mar 27, 2014 at 10:20 AM, wrote: > > -Ursprüngliche Nachricht- > > Von: Leo Donahue [mailto:donahu...@gmail.com] > > Gesendet: Donnerstag, 27. März 2014 17:54 > > An: Tomcat Users List > > Betreff: Re: Realm ldaps > > > > On Thu, Mar 27, 2014 at 8:45 AM, wrote: > > > > > Hello, > > > > > > I like to change my ldap jndirealm to ldaps. > > > > > > > > > > > className="org.apache.catalina.realm.UserDatabaseRealm" > > > resourceName="UserDatabase"/> > > > > className="org.apache.catalina.realm.JNDIRealm" > > > > > > connectionName="CN=SVC_TomcatLdapQuery,OU=Service > > > Accounts,OU=Hamburg,OU=SITES,OU=\#KONFIGURATION,DC=,DC=de" > > > > > > How do you get away with an empty domainComponent? DC= ? > > Sorry for confusing, this seems to be a mistake. In my orginal config I of > course got DC=DOM,DC=de. > > Does fixing that solve the issue? Does Tomcat start with this configuration? Anything in the logs?
AW: Realm ldaps
> -Ursprüngliche Nachricht- > Von: Leo Donahue [mailto:donahu...@gmail.com] > Gesendet: Donnerstag, 27. März 2014 17:54 > An: Tomcat Users List > Betreff: Re: Realm ldaps > > On Thu, Mar 27, 2014 at 8:45 AM, wrote: > > > Hello, > > > > I like to change my ldap jndirealm to ldaps. > > > > > > > className="org.apache.catalina.realm.UserDatabaseRealm" > > resourceName="UserDatabase"/> > > className="org.apache.catalina.realm.JNDIRealm" > > > > connectionName="CN=SVC_TomcatLdapQuery,OU=Service > > Accounts,OU=Hamburg,OU=SITES,OU=\#KONFIGURATION,DC=,DC=de" > > > > How do you get away with an empty domainComponent? DC= ? Sorry for confusing, this seems to be a mistake. In my orginal config I of course got DC=DOM,DC=de. > > This doesn't say you can't have an empty name, but why would you. Just > curious. > http://msdn.microsoft.com/en-us/library/aa366101%28v=vs.85%29.aspx - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Realm ldaps
On Thu, Mar 27, 2014 at 8:45 AM, wrote: > Hello, > > I like to change my ldap jndirealm to ldaps. > > > className="org.apache.catalina.realm.UserDatabaseRealm" > resourceName="UserDatabase"/> > connectionName="CN=SVC_TomcatLdapQuery,OU=Service > Accounts,OU=Hamburg,OU=SITES,OU=\#KONFIGURATION,DC=,DC=de" > > How do you get away with an empty domainComponent? DC= ? This doesn't say you can't have an empty name, but why would you. Just curious. http://msdn.microsoft.com/en-us/library/aa366101%28v=vs.85%29.aspx
Re: Is it possible to send a 'keep-alive' packet back to client session every x seconds?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Mark, On 3/27/14, 5:38 AM, Mark Thomas wrote: > On 27/03/2014 03:08, Matthew Turany wrote: >> Is it possible to configure either apache or tomcat to send a >> packet every x number of seconds so that at the client end the >> gateway thinks the session is still active and will keep the >> connection open, or is this something best put into the actual >> web app? > > http://tomcat.apache.org/connectors-doc/reference/workers.html > socket_keepalive > > You'll need to configure the OS to send the packets frequently > enough. > > Alternatively, change the application design: - One request to > trigger generation of the report - N requests to retrieve report > which returns either "still processing" (maybe with an ETA) or > "here it is". +1 I believe this is a better design in the long-run. It also allows you to do things like off-line processing of batches without changing your UI. Another thing you could do is simulate the above by using a report-builder thread launched from your servlet, and then have your request-processing thread to a flush() on the response (causing chunked encoding to be used), then sleep for some amount of time (maybe 1-5 seconds), then check the status of the report, then flush() again (not sure if it will keep emitting 0-length chunks if you flush over and over again), then sleep again. This seems like a perfect use case for async processing. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJTNFd6AAoJEBzwKT+lPKRYANwP/Rx3W5KQQnLzMx/xEY41cix0 JuAEGxZVQyX5LDwLlB5iivIAGdVqLZxXGP/4on/sIgl+XjC59hkU4N77oLokb3Cl heAgUmR9VA4KsUTMeSJmN0Km5lMOzCv3c+Ru5fAjSpsNKgp2SjsitpdGgRfebd1y djQfemWIkC6bBHjtW4PbwGkva9Kny8FVx2Ius8f6V+jKcHGLGztWIfy99rR0Oya3 2dP/JboBPH0PYW19Jhor7qM7IMJXJjdRSswnBc63e7runvw8hA1DD3KDW0mHceVo Q4Q0WW1zRaT1DOzkmQhOs4H68ev20EjV9DZu8Md17kJVrwkeFMN+GGNppLeivzdK UZHkEWbZjDZRcIGR0iEQQZGLVCRMImNsm+fBoO6piXrr8UFpzMUqXLMiSuD3Woab GFtvydUBuO4gyxAHXh2yW+XJ1iZBSfigUBvTZUKOyS1sEURBKmgTopySuJaKPhYN OMYCQ8e5MKbcxl09qp7JRg+H/jfIr9NBgakWrQRe4R1Pox1doMaNZsJufwpkbxH2 0CKNuLClIrvQC/iw5D7McB0o5PY5brOMGzWfdb6Psgnrq/4FB3QDdSCbIaQ8JF+E GfRZ5D2VE73ueb8dYiElA0t3fEV0DSdqOtxR40IwROlpR6My7HBUVgy/7dxkxEg7 xXj/B0T5nbShYxZrlw3S =RtBD -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Scripting Tomcat installation versus multiple instances
On 3/27/2014 12:11 PM, Christopher Schultz wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 David, ... Yes, it is. When I am setting up a new install, I do the windows install and then unzip the .zip package on top of it, so I have all the .bat files as well. I don't fully automate my installations, but I do some scripting to make it easier to be consistent with my naming and configuration. https://issues.apache.org/bugzilla/show_bug.cgi?id=56323 Vote for it. done - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat 8 Production read?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Dennis, On 3/27/14, 12:14 PM, Dennis Ross wrote: > Is Tomcat 8 enterprise production ready? > > Meaning can I use this reliably for clients or should I wait a > bit? There has not been a Tomcat 8 release voted as "stable" yet. The current release under a vote (8.0.5) is likely to pass as "beta". IIRC, Apache JIRA is running on top of Tomcat 8, so it *is* getting some in-the-wild play-time. IMO it's really close, except maybe for the NIO.2 connector which is completely new and experimental anyway. Looks like there might be a bug with sendfile in the 8.0.5 build, so you might want to disable that as well. It's certainly worth getting into your testing environment. Let us know if you find anything wrong with it ;) - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJTNFF+AAoJEBzwKT+lPKRYRnsP/3en7hhvWMD0yYwzVWB1r5QV IE41VRcEIwHsT2Dr90Wv13Hin78fVH3ndt8QZi1CEoUqOEu8Zd7Mijbkfg1aMYD5 mHDDQNA+kGtl9t7kvcPyGte0WiQYJViyx8clebb38nzitnv9lCaB0n8SgWUGxgdo a+7ACk+3IwXmuDRXHG9ntvTo3amOai1O5KMgEf4IvU3hoyBAHzffg8I2NU8KwizL HHJcG6GL9v9YGRNZwaIi5wgkKSXavY0+gtR3BHrccudO2T9T1A9I1i5WZ5uQg6ij lDCABXPMIWXttktdbyVv+nMyuY3IdJUF5EMbmx4CQ4JGiYqVE4m42qCE36/xxSev M37ZHCA1glZ7SCr3PB8dDctHKBudHwMZbJYwfB1gVdDeBdep1KTHOc95SYhiILd6 MkuLbmE3HKVQmKhGc2ipdcukRwmqncsBm1cOM4sb2MnJW5E9mT3BpmclsxYmmoh0 oX0QEH9I2slRqoVl+dKRH+cYS/X49Q5AdIywFka16M/0yo6S8ttv6k/inbTZjagN oqoXDwoZDrI5hxjwmHh7u0d42f91SNx6VySCJPzUjHdfwq/I4eAa6MJ/ZGFt5zeA 0R3wz267/kuq/MIEIYWWnJH2bPQIsZr3EF+FDNUOQCL4ObBCbYnSeDuAdGm9UOze jbHipXYwm4rCK6WGgiBp =A2iA -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: {OT] Scripting Tomcat installation versus multiple instances
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 André, On 3/27/14, 12:13 PM, André Warnier wrote: > Christopher Schultz wrote: >> -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 >> >> André, >> >> On 3/26/14, 3:35 PM, André Warnier wrote: >>> Despite your name, you are too quick (and not lazy enough). >>> You could have waited an hour, to get that solution right here. >>> ;-) >> >> Please don't top-post. >> >> - -chris >> >> (Sorry... just had to do that) > > Well, you top-post all the time ! (see above) Do I? - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJTNE/7AAoJEBzwKT+lPKRYy2oP/0+krojpRSJWrukMOU1wb3ET D0ssGvojcv2vrr7zoSeGTvEV0Y+OxxalDNSOKMZsDaLwj9AkBnfGRYrMBDahnyNq cifzB3kK2G826sCg6owGv6gsd+YFJ03tqB9nuPpNtt/jTmafjDRSEEnBdj2VK3xr ZTnUSMz+jZ1EAy/OQAd4oIa5jOh5CxBsZa9Dux7MbGLV2UudqoKxTCjLx7I7FpWp p2zUuh3vNiF1XWNvxXnkLYB9xNHyPwPbfv6eRBXj9v5G993K6EalKMFPMoQcgw1k vzpboDVidjNHetWdIXbYDSIhFdgqhcZX7Gz0YrZ/yUDv77Mxr+Uu7xUAV3E+J2Z/ 9Sxx87C+dHGhatj8Q4SZScoDOHq+uInJLULq5KS18tprcDf6wOD4EBx2oTGw0npa pzZQaL5JXK/36K0ZpbkGQZWoxdh5ztPU25P6+HIOyo5EEeLvFNFWP2pClvaZcy4S 98S8G1OZvQpJrzc1RvBzd4a5Uxt+Jr0+KJCXqZAB976Wg8QwtaqGOAox0nvZpXqz /S6yRl/FOGskiXbNMrTeB9lztWECwZLA+WOhdyqERyElvbKNAr2aI9rZIs829QjF Xtb9VVkoa55otSmnNmIKE1DNClm44uOJhcLeMAZu8gEPCNqfs3wG7R0Sis67BlRL 6oTQlJto6mAzgscr8rg6 =9d0b -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat 8 Production read?
On Mar 27, 2014, at 12:14 PM, Dennis Ross wrote: > Is Tomcat 8 enterprise production ready? It’s a judgement call, but you should probably wait till there is a stable release first. See here for definition of Alpha / Beta / Stable. http://tomcat.apache.org/whichversion.html > Meaning can I use this reliably for clients or should I wait a bit? It’s a good time to start using it in development and testing environments. That way you can find and help squash bugs. Dan > > Thanks? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Why Tomcat crashes
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Wangke, On 3/27/14, 2:18 AM, wangke wrote: > Hi All: Recently I've encountered a very strange problem, I managed > to crash tomcat entirely with my application for a few times. > Personally, I am quite suspicious about the the settings of a > shared library libswipl. What I did according to > https://code.google.com/p/javanaproche/wiki/HowToJPL is I have > Java.library.path point to libswipl for a jar file called JPL (a > bidirectional interface between Java and Prolog since I need to run > some simple Prolog rules) and then when I start calling JPL > provided interface in my application code, the following exceptions > are thrown: That sounds like a lot of fun! > Can anybody help me to figure out what happened exactly, BTW, > Tomcat is not crashing all the time but fairly frequent though. > Thanks very much. > > WARNING: Error while removing context [/XX] > java.lang.NoClassDefFoundError: > org/apache/struts2/util/ObjectFactoryDestroyable at > org.apache.struts2.dispatcher.Dispatcher.cleanup(Dispatcher.java:265) > > at org.apache.struts2.dispatcher.ng.PrepareOperations.cleanupDispatcher(PrepareOperations.java:188) > at > org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.destroy(StrutsPrepareAndExecuteFilter.java:100) > > at org.apache.catalina.core.ApplicationFilterConfig.release(ApplicationFilterConfig.java:358) > at > org.apache.catalina.core.StandardContext.filterStop(StandardContext.java:4107) > > at org.apache.catalina.core.StandardContext.stop(StandardContext.java:4876) > at > org.apache.catalina.core.ContainerBase.removeChild(ContainerBase.java:936) > > at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1212) > at > org.apache.catalina.startup.HostConfig.check(HostConfig.java:1382) > at > org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:306) > > at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142) > at > org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1389) > > at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1653) > at > org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1662) > > at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1642) > at java.lang.Thread.run(Thread.java:662) Caused by: > java.lang.ClassNotFoundException: > org.apache.struts2.util.ObjectFactoryDestroyable at > org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) > > at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) > ... 16 more Mar 26, 2014 6:18:51 PM > org.apache.catalina.core.ContainerBase stop INFO: Container > org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/XX].[jsp] > has not been started Mar 26, 2014 6:18:51 PM > org.apache.catalina.core.ContainerBase stop INFO: Container > org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/XX].[default] > has not been started Mar 26, 2014 6:18:51 PM > org.apache.catalina.startup.HostConfig checkResources WARNING: > Error during context [/XX] destroy > java.lang.NoClassDefFoundError: > org/apache/struts2/util/ObjectFactoryDestroyable at > org.apache.struts2.dispatcher.Dispatcher.cleanup(Dispatcher.java:265) > > at org.apache.struts2.dispatcher.ng.PrepareOperations.cleanupDispatcher(PrepareOperations.java:188) > at > org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.destroy(StrutsPrepareAndExecuteFilter.java:100) > > at org.apache.catalina.core.ApplicationFilterConfig.release(ApplicationFilterConfig.java:358) > at > org.apache.catalina.core.StandardContext.filterStop(StandardContext.java:4107) > > at org.apache.catalina.core.StandardContext.stop(StandardContext.java:4876) > at > org.apache.catalina.core.ContainerBase.destroy(ContainerBase.java:1176) > > at org.apache.catalina.core.StandardContext.destroy(StandardContext.java:4976) > at > org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1219) > > at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1382) > at > org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:306) > > at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142) > at > org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1389) > > at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1653) > at > org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1662) > > at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1642) > at java.lang.Thread.run(Thread.java:662) Mar 26, 2014 6:19:05 PM > org.apache.coyote.http11.Http11Protocol pause INFO: Pausing Coyote
Tomcat 8 Production read?
Is Tomcat 8 enterprise production ready? Meaning can I use this reliably for clients or should I wait a bit? Thanks?
Re: {OT] Scripting Tomcat installation versus multiple instances
Christopher Schultz wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 André, On 3/26/14, 3:35 PM, André Warnier wrote: Despite your name, you are too quick (and not lazy enough). You could have waited an hour, to get that solution right here. ;-) Please don't top-post. - -chris (Sorry... just had to do that) Well, you top-post all the time ! (see above) - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Scripting Tomcat installation versus multiple instances
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 David, On 3/26/14, 3:35 PM, David kerber wrote: > On 3/26/2014 3:25 PM, André Warnier wrote: >> Leo Donahue wrote: >>> On Wed, Mar 26, 2014 at 11:32 AM, Sebastien Tardif < >>> sebastien.tardif.contrac...@gmo.com> wrote: >>> I'm confused by the commands given by Tomcat documentation about creating different instances, it says: "service install instance1" but "service" is not a command provided by Tomcat or Windows, see http://tomcat.apache.org/tomcat-7.0-doc/windows-service-howto.html#Multiple_Instances Almost everything I'm trying to automate using that page is not working, maybe it's rare people automate installation on Windows? >>> >>> The service command is located here: >>> \apache-tomcat-7.0.52\bin >>> >>> change directories to this location and run that command. >>> >> >> Maybe also the OP did not download the correct package to have >> that command. For some reason which is still mysterious to me, >> the "Service Installer" package does not contain all the files >> which the ZIP package contains. And "bin/service.bat" is probably >> among the ones missing. > > Yes, it is. When I am setting up a new install, I do the windows > install and then unzip the .zip package on top of it, so I have all > the .bat files as well. I don't fully automate my installations, > but I do some scripting to make it easier to be consistent with my > naming and configuration. https://issues.apache.org/bugzilla/show_bug.cgi?id=56323 Vote for it. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJTNE2VAAoJEBzwKT+lPKRYicoP/0wJYICuyIYTdbWeNEaxAVbA SPyrBpoiXRPZAMFm/tW0Epk2ruiVh/9SCqT3M1nbCM+ThBzMEYjaWf38v1zaGVgb HQUSww/2Vz7D3ZuuQz9GHA4OD9+5l+FFkTE6qAMZf6q9oEyzu6/ySGGyzWYVSRdw T+Buy6ZQHCVgbgB9wzZbGyHgwULEKnf/GUbCIlpx+kAiHhqnTPl/6QiXJpBaUPoE ZO7HPUNZFG/P2yjORalP/xsU0l2R/74pmySFUd8lP5oLevMNt3hoqjWHV1rVROuV pFpnaNPnbo2aeCHh1RNXNPP57ieiTmSdHgm+LghfPG7aVXPW1vsw5T10VqlxuEWN mf+GAmlpVzQl0NkqoIW4T0A0yjrVJHXqMmPnzQEE5xc7wwL86h/B2A+Gs47tXVrQ lvuicmQkqKJOyanriJ+dvP5ddDPKDlPPf4/oeLqZoPqpajpWI4/uAL4AhV24I7Lt sls4pR/rMc23ytujodKu3A+alANL6cz/279aHOUqkkpNOe5NuPqr9T1Vn/c4fPKr PXwzEmtVOLX4VRkB+bohqya5xwsb7lkDmzrS7LPAQj9/pd0lnVDd+2P0O02yvDM5 kaZIeRK4qa6RGJIcGv81hpiskbT3dcv23ALfYuQu87/MMeiNkDspY0OoZIRJS/qO jB6BBGKGgYLQYsIHUDVu =Amxm -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Scripting Tomcat installation versus multiple instances
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 André, On 3/26/14, 3:35 PM, André Warnier wrote: > Despite your name, you are too quick (and not lazy enough). You > could have waited an hour, to get that solution right here. ;-) Please don't top-post. - -chris (Sorry... just had to do that) -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJTNE0BAAoJEBzwKT+lPKRYZRYQAKaYJRoB4M4Fm4NnIW3Q2Ng/ Fs1dk96Ad1HdIPWgYUjnzRS3oOXXW+2ocOnn1LXUctjQRsdkruY0PmwrYThUZ8zB lZmJgSFBoi3w1c+HJ3KTchnx8+VQUDOeR0r++hmpvl0j92yNQz0a4mr7muyvoMs2 e7TAM3dRMAkcCX/W8In0SsOweHaSpUTOAnEkzGG4tGZKaPvAJ4fIEQ2Jra7bcHqQ U/u2VRlcXBemIoeOFYGANek1v/hvu7NelhDLwMLHgJYFoktxjSyWKpZ187OOkuU9 g/WOM2WIa/TzCMEPtA8QhD45biJmE+l4vvR4ScVgeC3eIxT0F6jNwvvcflEDEo0/ +SWonwmrKGvKbgvgBLM0VRXfbNXbFmaw1Vo8liT077BsmYNFrSP7eN51iiePH025 0O7dGAJQyi5fe3w6JP4WHh1rbYKOzmJMyyMQjKItSzy6Y07fK6qpbekb4VxnLrev Rvq0Xh/xpqgj1mtKip7JFBbJl1m/wu6suJCGuUOukm4sCqjcTYNUCBL67Md/ilR+ 6baBdUvNriznVxJsY7AOqAa5rCnU6iyBTOdBvduuw25+gED45aLpJUuL+OuHl5Ij 2U8s2rKWdrvIKWLpdRl8BYZksbQr7yMV5JJrh5ce679GHrduJv1xLkggdQRr5HMu kpvX512awxPkrnJ0xGkX =UxeD -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Realm ldaps
Hello, I like to change my ldap jndirealm to ldaps. Unfortunately, it's not working yet. I guess I need to disabled client cert verification, but I can't find any option for Realms. Do you know such an option? Best Regards, Bjoern - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat under load && frontend reverse proxy timeouts
Hi Andre', On 03/27/2014 02:37 PM, André Warnier wrote: Frederik Nosi wrote: First thanks for your reply, On 03/27/2014 10:32 AM, Mark Thomas wrote: On 27/03/2014 01:39, Frederik Nosi wrote: Hi all, Having to deal with slow applications deployed under tomcat, with a reverse proxy in front, frequently i've noticed that even when the frontend timeouts and closes it's part of the TCP connection, the Tomcat thread processing the request goes on and on till it finishes. Is there a way to make the proccessing thread stop when the frontend connection get's closed? No. Any hints on how to deal with situations like this? This is basically an issue similar to the one that is the subject of the other message thread "Re: Is it possible to send a 'keep-alive' packet back to client session every x seconds?". Not exactly, it's the opposite scenario, the load balancer and the firewall / NAT part is fine. Probably my english is a bit poor. What i wanted to acchieve is, without having the possibility to modify the webapp, when the uplink request (this can be mod_jk/apache or user's browser, whatever calls the application) timeouts to find a way to stop the tomcat / webapp proccessing thread. Though from Mark's reply i understand that this is not possible with tomcat. So, at this point, having to deal with such webapps, is there some common solution? My problem is that the failover mecchanism (mod_jk in my case) during peak usage amplifies the load on the application servers, it's a spiral of death :-) How do you guys deal with this situations? AFAIK, the only portable way to detect this situation, is by forcing the web application to regularly send some output to the client. If the connection has been closed, it will then (*) get an exception, which it can handle. in mod_jk cping/cpong, or the TCP stack (keepalive tcp). But is not my scenario unfortunately. Anyway, thanks for your reply! It implies that the webapp itself is not blocked waiting on some separate resource, and can regularly break out of its own main processing to send such output, resuming its main work if the result is ok. (*) with possibly some delay before everything gets flushed all the way to the client connection, and the disconnected state makes its way back up the chain. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org Frederik - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat under load && frontend reverse proxy timeouts
Frederik Nosi wrote: First thanks for your reply, On 03/27/2014 10:32 AM, Mark Thomas wrote: On 27/03/2014 01:39, Frederik Nosi wrote: Hi all, Having to deal with slow applications deployed under tomcat, with a reverse proxy in front, frequently i've noticed that even when the frontend timeouts and closes it's part of the TCP connection, the Tomcat thread processing the request goes on and on till it finishes. Is there a way to make the proccessing thread stop when the frontend connection get's closed? No. Any hints on how to deal with situations like this? This is basically an issue similar to the one that is the subject of the other message thread "Re: Is it possible to send a 'keep-alive' packet back to client session every x seconds?". AFAIK, the only portable way to detect this situation, is by forcing the web application to regularly send some output to the client. If the connection has been closed, it will then (*) get an exception, which it can handle. It implies that the webapp itself is not blocked waiting on some separate resource, and can regularly break out of its own main processing to send such output, resuming its main work if the result is ok. (*) with possibly some delay before everything gets flushed all the way to the client connection, and the disconnected state makes its way back up the chain. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: AW: tomcat 5.5.26 misses a jar contaning org.apache.tomcat.core.BaseInterceptor . . .
On 27/03/2014 11:58, Stadelmann Josef wrote: > Hi Mark > > My comment below ++> > > > > > -Ursprüngliche Nachricht- > Von: Mark Thomas [mailto:ma...@apache.org] > Gesendet: Mittwoch, 26. März 2014 20:53 > An: Tomcat Users List > Betreff: Re: tomcat 5.5.26 misses a jar contaning > org.apache.tomcat.core.BaseInterceptor . . . > > On 26/03/2014 19:10, Stadelmann Josef wrote: >> For trouble shooting I am about to build an old version 5.5.26 of >> Apache Jakarta Tomcat > > Why not just download a binary distribution from the ASF archives? > ++> as I said, I have to trouble shoot and look at the code You still do not need to build from source. If you want to debug a particular version of Tomcat, download the binary and the source bundles. Run the binary in JPDA mode, connect with your IDE and when your IDE asks for source code, point it at the downloaded source. > i.e. debugging it to find what triggers a background process at random > destroying all our contexts? > > ++> Also, why binary? hmmm, our Tomcat runs on OpenVMS 8.4 So? This is Java. You can still use binary distributions from the ASF. >> And I am missing a jar containing at least the following 4 members >> >> import org.apache.tomcat.core.BaseInterceptor; >> import org.apache.tomcat.core.Context; import >> org.apache.tomcat.core.ContextManager; >> import org.apache.tomcat.core.TomcatException; > > None of those classes exist in the 5.5.x branch. Neither will you find them > in 4.0.x, 4.1.x, 5.0.x, 6.0.x, 7.0.x or 8.0.x. > ++> how can you assume that 5.526 will build without this classes either as > source in a sub project or in a jar? > (which one?) It is not an assumption. It is knowledge. That knowledge is based on 10+ years as a Tomcat committer including several years where I was building 5.5.x from source multiple times on a daily basis. > Those classes are from Tomcat 3.3.x (and possibly earlier). > ++> I hope I will get it? > >> using SVN Tourtoise I to download the project; It does not build and > > Sure it does, if you follow the build instructions correctly. > Granted for 5.5.x that is more complicated than it is for 6.0.x onwards but > it is doable. > ++> OK that is motivation to startr over again, Again, you don't need to build Tomcat. > ++> BUT tell me how can it build without the mentioned classes not found by > import? > ++> when do they come down (downloaded somehow external to the sources of > 5.5.26 Again, those classes are not part of Tomcat 5.5.26. I have no interest in helping you understand how you screwed up your build environment so badly that you think you need classes from Tomcat 3.x for a Tomcat 5.5.x build. >> I cannot find the files above with this tags version > > You won't. See explanation above. > >> I have started to maven-ise this project, and are fare almost, > > Why? Why? Why? > > You have downloaded a project that uses Ant and was never structured to work > with Maven. > The chances of you getting a valid 5.5.x build using Maven are close to zero. > ++> OK,would not have done so if the ant build would build; So rather than fix the Ant build you decided to try and get it to build with Maven? Bad decision. > ++> BTW which java jdk was used for 5.5.26 builds? Tomcat is always built with the minimum Java version required by the specifications that it implements so for Java 5.5.x that would be Java 1.4. >> but struggle so far to find this members above, better I like to find >> the jar file with the package org.apache.tomcat.core > > I think you need to decide what version it is you actually want first. > ++> I just want to build tomcat 5.5.26 No you don't. And that is a major part of the problem here. What you want to be able to do is find out why contexts are getting undeployed. You have made a number of poor decisions up to this point. You need to stop and re-focus on the problem you are trying to solve. I strongly encourage you to (re-)start by looking at what triggers the undeployment process. If nothing comes of that then debugging is a possible future step but not one that would require you to build Tomcat from source. Better yet, I'll try and save you some time. Undeployment is triggered when Tomcat thinks that a WAR and/or directory has been deleted. Are all the components of your installation - including the web applications - installed on local disks? Is any form of network storage involved? Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
AW: tomcat 5.5.26 misses a jar contaning org.apache.tomcat.core.BaseInterceptor . . .
Hi Mark My comment below ++> -Ursprüngliche Nachricht- Von: Mark Thomas [mailto:ma...@apache.org] Gesendet: Mittwoch, 26. März 2014 20:53 An: Tomcat Users List Betreff: Re: tomcat 5.5.26 misses a jar contaning org.apache.tomcat.core.BaseInterceptor . . . On 26/03/2014 19:10, Stadelmann Josef wrote: > For trouble shooting I am about to build an old version 5.5.26 of > Apache Jakarta Tomcat Why not just download a binary distribution from the ASF archives? ++> as I said, I have to trouble shoot and look at the code i.e. debugging it to find what triggers a background process at random destroying all our contexts? ++> Also, why binary? hmmm, our Tomcat runs on OpenVMS 8.4 > And I am missing a jar containing at least the following 4 members > > import org.apache.tomcat.core.BaseInterceptor; > import org.apache.tomcat.core.Context; import > org.apache.tomcat.core.ContextManager; > import org.apache.tomcat.core.TomcatException; None of those classes exist in the 5.5.x branch. Neither will you find them in 4.0.x, 4.1.x, 5.0.x, 6.0.x, 7.0.x or 8.0.x. ++> how can you assume that 5.526 will build without this classes either as source in a sub project or in a jar? (which one?) Those classes are from Tomcat 3.3.x (and possibly earlier). ++> I hope I will get it? > using SVN Tourtoise I to download the project; It does not build and Sure it does, if you follow the build instructions correctly. Granted for 5.5.x that is more complicated than it is for 6.0.x onwards but it is doable. ++> OK that is motivation to startr over again, ++> BUT tell me how can it build without the mentioned classes not found by import? ++> when do they come down (downloaded somehow external to the sources of 5.5.26 > I cannot find the files above with this tags version You won't. See explanation above. > I have started to maven-ise this project, and are fare almost, Why? Why? Why? You have downloaded a project that uses Ant and was never structured to work with Maven. The chances of you getting a valid 5.5.x build using Maven are close to zero. ++> OK,would not have done so if the ant build would build; ++> BTW which java jdk was used for 5.5.26 builds? > but struggle so far to find this members above, better I like to find > the jar file with the package org.apache.tomcat.core I think you need to decide what version it is you actually want first. ++> I just want to build tomcat 5.5.26 > maybe somebody can give me groupId and artifactId and the maven repository > link. > > Looking at maven central is a no go either unless I did a mistake. Going back that far, only a few versions were uploaded to Maven. It depends exactly which version you want. You'd be better off (once you have decided which version that is) getting it from the ASF archives. ++> I toke it down using svn from apache asf archive ++> Josef Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat under load && frontend reverse proxy timeouts
First thanks for your reply, On 03/27/2014 10:32 AM, Mark Thomas wrote: On 27/03/2014 01:39, Frederik Nosi wrote: Hi all, Having to deal with slow applications deployed under tomcat, with a reverse proxy in front, frequently i've noticed that even when the frontend timeouts and closes it's part of the TCP connection, the Tomcat thread processing the request goes on and on till it finishes. Is there a way to make the proccessing thread stop when the frontend connection get's closed? No. Any hints on how to deal with situations like this? Mark Frederik. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Why Tomcat crashes
On Mar 27, 2014, at 2:18 AM, wangke wrote: > > > > Hi All: > Recently I've encountered a very strange problem, I managed to crash tomcat > entirely We need more specifics here. What exactly happens when it crashes? Has the process exited? Do you see a JVM crash dump file? Is the process still running, but your app is not responding (or responding with 404’s)? or something else? > with my application for a few times. Personally, I am quite suspicious about > the the settings of a shared library libswipl. What I did according to > https://code.google.com/p/javanaproche/wiki/HowToJPL If you’re seeing the process exit, it could be due to a crash in this native code. Generally when this happens you’ll get a JVM crash dump file in the working directory (or the location of -XX:ErrorFile). You’ll want to locate this file as it will contain information about what happened. > is I have Java.library.path point to libswipl for a jar file called JPL (a > bidirectional interface between Java and Prolog since I need to run some > simple Prolog rules) and then when I start calling JPL provided interface in > my application code, the following exceptions are thrown: > Can anybody help me to figure out what happened exactly, BTW, Tomcat is not > crashing all the time but fairly frequent though. > Thanks very much. > > > > > > > > > WARNING: Error while removing context [/XX] > java.lang.NoClassDefFoundError: > org/apache/struts2/util/ObjectFactoryDestroyable > at org.apache.struts2.dispatcher.Dispatcher.cleanup(Dispatcher.java:265) > at > org.apache.struts2.dispatcher.ng.PrepareOperations.cleanupDispatcher(PrepareOperations.java:188) > at > org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.destroy(StrutsPrepareAndExecuteFilter.java:100) > at > org.apache.catalina.core.ApplicationFilterConfig.release(ApplicationFilterConfig.java:358) > at > org.apache.catalina.core.StandardContext.filterStop(StandardContext.java:4107) > at > org.apache.catalina.core.StandardContext.stop(StandardContext.java:4876) > at > org.apache.catalina.core.ContainerBase.removeChild(ContainerBase.java:936) > at > org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1212) > at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1382) > at > org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:306) > at > org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142) > at > org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1389) > at > org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1653) > at > org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1662) > at > org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1642) > at java.lang.Thread.run(Thread.java:662) > Caused by: java.lang.ClassNotFoundException: > org.apache.struts2.util.ObjectFactoryDestroyable > at > org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) > at > org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) > ... 16 more This looks like you’re missing a JAR file, in particular the one that contains “org.apache.struts2.util.ObjectFactoryDestroyable”. Although I’m not sure this is critical as it appears to be happening as Tomcat is shutting down. Dan > Mar 26, 2014 6:18:51 PM org.apache.catalina.core.ContainerBase stop > INFO: Container > org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/XX].[jsp] > has not been started > Mar 26, 2014 6:18:51 PM org.apache.catalina.core.ContainerBase stop > INFO: Container > org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/XX].[default] > has not been started > Mar 26, 2014 6:18:51 PM org.apache.catalina.startup.HostConfig checkResources > WARNING: Error during context [/XX] destroy > java.lang.NoClassDefFoundError: > org/apache/struts2/util/ObjectFactoryDestroyable > at org.apache.struts2.dispatcher.Dispatcher.cleanup(Dispatcher.java:265) > at > org.apache.struts2.dispatcher.ng.PrepareOperations.cleanupDispatcher(PrepareOperations.java:188) > at > org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.destroy(StrutsPrepareAndExecuteFilter.java:100) > at > org.apache.catalina.core.ApplicationFilterConfig.release(ApplicationFilterConfig.java:358) > at > org.apache.catalina.core.StandardContext.filterStop(StandardContext.java:4107) > at > org.apache.catalina.core.StandardContext.stop(StandardContext.java:4876) > at > org.apache.catalina.core.ContainerBase.destroy(ContainerBase.java:1176) > at > org.apache.catalina.core.StandardContext.destroy(StandardContext
Re: Is it possible to send a 'keep-alive' packet back to client session every x seconds?
Mark Thomas wrote: On 27/03/2014 03:08, Matthew Turany wrote: Is it possible to configure either apache or tomcat to send a packet every x number of seconds so that at the client end the gateway thinks the session is still active and will keep the connection open, or is this something best put into the actual web app? http://tomcat.apache.org/connectors-doc/reference/workers.html socket_keepalive You'll need to configure the OS to send the packets frequently enough. That's a bit the hammer, isn't it ? Under Linux at least, this seems to be a global kernel setting, so it applies to all connections. Alternatively, change the application design: - One request to trigger generation of the report - N requests to retrieve report which returns either "still processing" (maybe with an ETA) or "here it is". Apart from any gateways/proxies/firewalls, there is also a browser timeout : if the browser sends a request, and then does not get a response for 4-5 minutes, eventually it will time-out, close the connection, and display "the server is not responding.. try again later". Another possibility is to have the application periodically send some kind of "partial response" to the browser (e.g., a line of ".."), to be replaced by the real response when it's ready. It's a 20-year old trick, and it is a bit tricky to get right, but it still works. Of course it means that the application has to be able to do that, and is not itself waiting on a call to a slow external resource. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
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Re: Is it possible to send a 'keep-alive' packet back to client session every x seconds?
On 27/03/2014 03:08, Matthew Turany wrote: > Is it possible to configure either apache or tomcat to send a packet every > x number of seconds so that at the client end the gateway thinks the > session is still active and will keep the connection open, or is this > something best put into the actual web app? http://tomcat.apache.org/connectors-doc/reference/workers.html socket_keepalive You'll need to configure the OS to send the packets frequently enough. Alternatively, change the application design: - One request to trigger generation of the report - N requests to retrieve report which returns either "still processing" (maybe with an ETA) or "here it is". Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat under load && frontend reverse proxy timeouts
On 27/03/2014 01:39, Frederik Nosi wrote: > Hi all, > > Having to deal with slow applications deployed under tomcat, with a > reverse proxy in front, frequently i've noticed that even when the > frontend timeouts and closes it's part of the TCP connection, the Tomcat > thread processing the request goes on and on till it finishes. Is there > a way to make the proccessing thread stop when the frontend connection > get's closed? No. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
