[jboss-user] [Clustering] - Session replication in jBoss 5.1.0 GA

[KavithaAnbazhagan]

Hi,

I am trying the clustering in jboss 5.1.0 installed in two different machines with Apache 2.2.8 and mod_jk-1.2.28-httpd-2.2.3. The loadbalacing is working. But when i shut down one server, then the session of that particular server is not being maintained and am getting 503 exception with the below exception in mod_jk.log

Exception:
[Wed Sep 02 14:51:35 2009][3060:3416] [debug] jk_lb_worker.c (950): searching worker for session route node1
[Wed Sep 02 14:51:35 2009][3060:3416] [info] jk_lb_worker.c (981): all workers are in error state for session YcpysrgSEAz5HMz+mXxp3A__.node1
[Wed Sep 02 14:51:35 2009][3060:3416] [info] jk_lb_worker.c (1453): All tomcat instances failed, no more workers left (attempt=1, retry=1)
[Wed Sep 02 14:51:35 2009][3060:3416] [info] jk_lb_worker.c (1464): All tomcat instances are busy or in error state
[Wed Sep 02 14:51:35 2009][3060:3416] [error] jk_lb_worker.c (1469): All tomcat instances failed, no more workers left
[Wed Sep 02 14:51:35 2009]router 10.68.200.122 2.390595
[Wed Sep 02 14:51:35 2009][3060:3416] [info] mod_jk.c (2615): Service error=0 for worker=router

Below are my configuration:
httpd.conf
JkWorkersFile conf/workers.properties

JkLogFile logs/mod_jk.log

JkLogLevel debug

JkLogStampFormat "[%a %b %d %H:%M:%S %Y]"

JkMount /*.jsp router
JkMount /*.* router
JkMount /war31/* router   
JkMount /mbankserver2/* router
JkMount /jmx-console/* router

JkRequestLogFormat "%w %V %T" 

JkShmFile logs/jk.shm 

<Location /jkstatus/>
    JkMount jkstatus
    Order deny,allow
    Deny from all
    Allow from 127.0.0.1
   

workers.properties
worker.node1.port=8009
worker.node1.host=ip
worker.node1.type=ajp13
worker.node1.lbfactor=1
worker.node1.cachesize=10

worker.node2.port=8009
worker.node2.host=ip
worker.node2.type=ajp13
worker.node2.lbfactor=1
worker.node2.cachesize=10

worker.list=router,jkstatus
worker.router.type=lb
worker.router.balance_workers=node1,node2
worker.router.sticky_session=1

worker.jkstatus.type=status

In application
web.xml - Added the distributable tag

jboss-web.xml
<jboss-web>
    <replication-config>
        <replication-trigger>SET_AND_NON_PRIMITIVE_GET</replication-trigger>
        <replication-granularity>SESSION</replication-granularity>
        <replication-field-batch-mode>true</replication-field-batch-mode>
    </replication-config>
</jboss-web>

In both machine Jboss
1. Configured the jvmRoute in server.xml
2. Mentioned the path as SESSIONS.sar in context.xml

Starting the jboss with
run -c all -b ip

Please let me know if i am missing something in the configuration.

Thanks.



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