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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">I am trying to load balance JBoss servers(jboss 4.2.2) with session replication on windows.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">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.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">I have successfully load balanced jboss servers with mod proxy, but no session replication in this case.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">Kindly help me to load balance servers using mod_jk as well as replicating session in case of mod proxy.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><u><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">Settings for mod_jk :
<o:p></o:p></span></u></p>
<p class="MsoNormal"><u><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"><o:p><span style="text-decoration:none"> </span></o:p></span></u></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">I have done the following settings
<u>in httpd.conf:</u><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">LoadModule jk_module modules/mod_jk.so<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">Include conf/mod-jk.conf<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><u><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">In mod-jk.conf file:<o:p></o:p></span></u></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">JkWorkersFile conf/workers.properties<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">JkShmFile logs/mod_jk.shm<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">JkLogFile logs/mod_jk.log<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">JkLogLevel info<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">JkLogStampFormat "[%a %b %d %H:%M:%S %Y] "<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">JkOptions +ForwardKeySize +ForwardURICompat –ForwardDirectories<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">JkRequestLogFormat "%w %V %T"<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">JkMount /* loadbalancer<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"><Location /jkstatus/><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"> JkMount status<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"> Order deny,allow<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"> Deny from all<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"> Allow from 127.0.0.1<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"></Location>
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><u><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">In workers.properties file:
<o:p></o:p></span></u></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.list=loadbalancer,status<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.node1.port=8012<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.node1.host=172.17.88.53<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.node1.type=ajp13<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.node1.lbfactor=1<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.node1.cachesize=10<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.node1.redirect=node2<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.node2.port=8012<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.node2.host=172.17.88.46<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.node2.type=ajp13<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.node2.lbfactor=1<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.node2.cachesize=10<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.node2.redirect=node1<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.loadbalancer.type=lb<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.loadbalancer.balance_workers=node1,node2<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.loadbalancer.sticky_session=1<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">worker.status.type=status<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">The error that comes in apache server’s log file is :</span>
<span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">
No connection could be made because the target machine actively refused it. <o:p>
</o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">-----------------------------------------------------------------------------------------------------------------------------------------<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">But when I used mod_proxy, I was able to load balance JBoss servers but unable to replicate session.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">I did the following settings in httpd.conf for load balancing:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:48.0pt"><span style="font-size:8.0pt;
font-family:"Trebuchet MS","sans-serif";color:windowtext">ProxyRequests On<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:48.0pt"><span style="font-size:8.0pt;
font-family:"Trebuchet MS","sans-serif";color:windowtext">ProxyVia On<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"> ProxyPass / balancer://mycluster/
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"> <Proxy balancer://mycluster><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:48.0pt"><span style="font-size:8.0pt;
font-family:"Trebuchet MS","sans-serif";color:windowtext"> BalancerMember https://172.17.88.46:8444 smax=10<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:48.0pt"><span style="font-size:8.0pt;
font-family:"Trebuchet MS","sans-serif";color:windowtext"> BalancerMember https://172.17.88.53:8444 smax=1 loadfactor=20<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:96.0pt"><span style="font-size:8.0pt;
font-family:"Trebuchet MS","sans-serif";color:windowtext"></Proxy><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">----------------------------------------------------------------------------------------------------------------------------------------------<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">JBoss settings :
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">In server.xml : <Engine name="jboss.web" defaultHost="localhost" jvmRoute="node1"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">In web.xml : added the tag : <distributable/><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">In jboss-web.xml : added the following cluster configuration :<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"> <replication-config><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"> <replication-trigger>ACCESS</replication-trigger><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"> <replication-granularity>SESSION</replication-granularity><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"> </replication-config><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">In jboss-service.xml : <attribute name="UseJK">true</attribute><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">I am able to load balance the servers successfully using mod proxy but unable to replicate session.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext">Kindly let me know if I am missing something…<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";
color:windowtext"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="background:transparent;text-autospace:none"><i><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";color:#9BBB59"><o:p> </o:p></span></i></p>
<p class="MsoNormal" style="background:transparent;text-autospace:none"><i><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";color:#9BBB59">Thanks & Regards,<o:p></o:p></span></i></p>
<p class="MsoNormal" style="background:transparent;text-autospace:none"><i><span style="font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";color:#9BBB59">Neha Mehta<o:p></o:p></span></i></p>
</div>
<p class="MsoNormal" style="background:transparent"><span style="font-size:8.0pt;
font-family:"Trebuchet MS","sans-serif""><o:p> </o:p></span></p>
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