I have been fighting with this for a while, still have no clue at all. Any help is appreciated!! we are running 2 tomcat instances (5.0.18) on one Solaris 9 box with SimpleTcpClustering. There are 4 applications needs to be clustered. However, there's only one application can transfer the session status over the cluster, in fact, it's always the first webapp ( in alphabet order) that can be clustered. For example, the 4 app's name are "comqa", "comstg", "hqqa", "hqstg", it's always "comqa" that successfully passes the session info. But if I rename "comstg" to "aaa" it becomes the one works fine while comqa stop working any more. For each application, I have tested leaving it as the only WEB APP in the cluster ( remove the rest app_name.xml under tomcat/conf/Catalina/localhost, and remove the rest app_name directories from tomcat/webapps) each one works fine for session replication individually. But as long as I put the rest back, again there's only "comqa" works. Is there any setting restricts the clusterable applications to be one only? Where is it? Every web application has < distributable /> in its web.xml. Here's the server.xml of the cluster: <Cluster className="org.apache.catalina.cluster.tcp.SimpleTcpCluster" name="FilipsCluster" debug="10" serviceclass="org.apache.catalina.cluster.mcast.McastService" mcastAddr="228.0.0.8 <http://228.0.0.8>" ## same mcastAddr on the other tomcat instance mcastPort="45565" ## same mcastPort on the other tomcat instance mcastFrequency="500" mcastDropTime="3000" tcpThreadCount="15" tcpListenAddress="auto" tcpListenPort="4001" ## tcpListenPort is "4002" on the other tomcat instance tcpSelectorTimeout="100" printToScreen="false" expireSessionsOnShutdown="false" useDirtyFlag="true" replicationMode="pooled" /> Here's the error message shown in catalina.out when starting tomcat showing the application's session state didn't transfered. WARNING: Manager[/comstg], requesting session state from org.apache.catalina.cluster.mcast.McastMember[ tcp://206.47.63.195:4002,206.47.63.195, 4002, alive=96819]. This operation will timeout if no session state has been received within 60 seconds Oct 25, 2005 10:41:53 AM org.apache.catalina.cluster.session.DeltaManagerstart SEVERE: Manager[/comstg], No session state received, timing out. Thanks!
