Hi,

 

I am trying to load balance JBoss servers(jboss 4.2.2) with session replication on windows.

I have tried using mod_jk(version 1.2.27) as connector, but unable to connect apache http server(version 2.2.13) to jboss server.

I have successfully load balanced jboss servers with mod proxy, but no session replication in this case.

Kindly help me to load balance servers using mod_jk as well as replicating session in case of mod proxy.

 

Settings for mod_jk :

 

I have done the following settings in httpd.conf:

LoadModule jk_module modules/mod_jk.so

Include conf/mod-jk.conf

 

In mod-jk.conf file:

 

JkWorkersFile conf/workers.properties

JkShmFile     logs/mod_jk.shm

JkLogFile     logs/mod_jk.log

JkLogLevel    info

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

JkOptions +ForwardKeySize +ForwardURICompat –ForwardDirectories

JkRequestLogFormat "%w %V %T"

JkMount /* loadbalancer

<Location /jkstatus/>

 JkMount status

 Order deny,allow

 Deny from all

 Allow from 127.0.0.1

</Location>  

 

In workers.properties file:

worker.list=loadbalancer,status

worker.node1.port=8012

worker.node1.host=172.17.88.53

worker.node1.type=ajp13

worker.node1.lbfactor=1

worker.node1.cachesize=10

worker.node1.redirect=node2

 

worker.node2.port=8012

worker.node2.host=172.17.88.46

worker.node2.type=ajp13

worker.node2.lbfactor=1

worker.node2.cachesize=10

worker.node2.redirect=node1

 

worker.loadbalancer.type=lb

worker.loadbalancer.balance_workers=node1,node2

worker.loadbalancer.sticky_session=1

worker.status.type=status

 

The error that comes in apache server’s log file is : No connection could be made because the target machine actively refused it.

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But when I used mod_proxy, I was able to load balance JBoss servers but unable to replicate session.

I did the following settings in httpd.conf for load balancing:

ProxyRequests On

ProxyVia On

                   ProxyPass / balancer://mycluster/

                  <Proxy balancer://mycluster>

    BalancerMember https://172.17.88.46:8444 smax=10

    BalancerMember https://172.17.88.53:8444  smax=1 loadfactor=20

</Proxy>

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JBoss settings :

In server.xml : <Engine name="jboss.web" defaultHost="localhost" jvmRoute="node1">

In web.xml : added the tag : <distributable/>

In jboss-web.xml : added the following cluster configuration :

         <replication-config>

              <replication-trigger>ACCESS</replication-trigger>

              <replication-granularity>SESSION</replication-granularity>

        </replication-config>

In jboss-service.xml : <attribute name="UseJK">true</attribute>

 

I am able to load balance the servers successfully using mod proxy but unable to replicate session.

 

Kindly let me know if I am missing something…