Hi Neha,
the stuff that you reference doing on Apache is not a cluster in the strict definition. It is load-balancing with some sticky info. Typically, J2EE clusters will do the load-balancing internally and I guess this is what is also causing your problems. Among the basics about clusters and namely J2EE clusters, each node will need to: - participate in session replication: Tomcat chooses to configure a ReplicationListener and a ReplicationSender - subscribe (and participate) in a cluster heartbeat communication, typically on multicast communication, hence there are the m-cast properties The cluster will typically manage a generic cluster IP address where requests will be sent from outside and from there, the cluster will do it's internal load balancing such that you do not have to bother with details of load balancing on the Apache layer (lb-algorithm, recognizing nodes that are ready for traffic etc.). Having said this, each ofbiz instance will require it's own configuration for a part of the below settings (while I am still puzzling through the Tomcat documentation and worked examples in the net in order to understand which ones they would be ... Using Tomcat (as OFBiz does), the respective configuration is also documented here: http://tomcat.apache.org/tomcat-6.0-doc/config/cluster.html ... and for a worked example (though overly complex since the tomcats in that example even run on the same port (but not unusual; we do that on our production environments very frequently, but for JBoss and WLS, that's why I do not have the Tomcat way to do things ready here) http://docs.zkoss.org/wiki/How_to_Run_ZK_on_Apache_%2B_Tomcat_clustering,_Part_I http://docs.zkoss.org/wiki/How_to_Run_ZK_on_Apache_%2B_Tomcat_clustering,_Part_II Hope this helps some ... Regards Carsten 2009/10/5 <[email protected]> > Hi, > > I am clustering OFBiz using Apache Http Server.I have load balanced two > nodes currently.Everything is working fine for sticky session state of > tomcat. > My requirement is to cluster OFBiz using session replication. > For this i have uncommented the following code in ofbiz-containers.xml > > <!-- uncomment for cluster support --> > <property name="default-server-cluster" value= > "cluster"> > <property name="rep-valve-filter"> > <property-value> > .*\.gif;.*\.js;.*\.jpg;.*\.htm;.*\.html;.*\.txt;</property-value> > </property> > <property name="manager-class" > value= > "org.apache.catalina.ha.session.DeltaManager"/> > <property name="debug" value="5"/> > <property name="replication-mode" > value= > "org.apache.catalina.tribes.transport.bio.PooledMultiSender"/> > > <property name="tcp-listen-host" value= > "auto"/> > <property name="tcp-listen-port" value= > "4001"/> > <property name="tcp-sector-timeout" value= > "100"/> > <property name="tcp-thread-count" value= > "6"/> > <property name="mcast-bind-addr" value= > "172.17.88.52"/> > <property name="mcast-addr" value= > "228.0.0.4"/> > <property name="mcast-port" value="45564" > /> > <property name="mcast-freq" value="500"/> > <property name="mcast-drop-time" value= > "3000"/> > </property> > > In mcast-bind-addr i have given the IP address of OFBiz host machine. > Also in <container name="catalina-container" tag , i have given jvm-route > property,same name as in my workers.properties file. > :jvm-route<property name="jvm-route" value="tomcat2"/> > > But i am not able to get session replication running on my load balanced > cluster. > > I also get the following message in OFBiz logs: > This operation will timeout if no session state has been received within > 60 sec. > > I am not able to understand what is missing in my settings.Kindly help me > out. > > Thanks & Regards, > Neha Mehta > > > ______________________________________________________________________ -- Best Carsten Schinzer Waisenhausstr. 53a 80637 München Germany
