Filip, Thanks for the input...any idea on the missing attribute?
Jeff Filip Hanik - Dev Lists wrote: > gentlemen, > looks like there is an attribute missing from the > "<Cluster...>*<Receiver.../>*</Cluster>" element. > the ReplicationListener.listen() method just gets the listen address (or > tries to resolve the name, then gets the port) > then it starts up a server socket using NIO. > > the other error, no active members in group, just means that the tomcat > instances didn't discover each other using multicast heart beats. > > Lets get the ReplicationListener error first, then we can move on to > membership, can you post your tomcat config file > PS. the error is not related to mod_jk, its in the tomcat java code. > thanks > Filip > > Phani Madgula wrote: >> Hi, >> >> I have been trying to use tomcat clustering with Geronimo for a >> customer application. Sometimes, I face the following problem. >> >> >> I downloaded apache2.0.54 and mod_jk_1.2.15 and tested clustering. I >> have three machines on a same subnet one windows and other are linux >> boxes. I have also enabled IPMulticast and no firewalls between systems. >> >> To my observation, session replication is not working. However, >> loadbalancer is able to fail-over successfully. >> >> When I shutdown the instance which is serving the HttpRequests, it >> will throw an exception stating "not able to start cluster listener" >> and also "no active members in the cluster" >> >> 11:09:10,572 DEBUG [WebappLoader] Stopping this Loader >> >> 11:09:10,573 ERROR [ReplicationListener] Unable to start cluster >> listener. >> >> java.lang.NullPointerException >> >> at >> org.apache.catalina.cluster.tcp.ReplicationListener.listen(ReplicationListener.java(Compiled >> Code)) >> >> at >> org.apache.catalina.cluster.tcp.ReplicationListener.run(ReplicationListener.java:125) >> >> >> at java.lang.Thread.run(Thread.java:570) >> >> 11:09:10,573 DEBUG [StandardContext] resetContext Geronimo >> :j2eeType=WebModule,name=//localhost/servlet-examples-cluster,J2EEApplication=none,J2EEServer=none >> null >> >> 11:09:10,575 DEBUG [StandardContext] Stopping complete >> >> or >> >> 11:03:07,998 INFO [DeltaManager] Manager [/servlet-examples-cluster]: >> skipping state transfer. No members active in cluster group. >> >> I have tested with both mod_jk_1.2.14 & mod_jk_1.2.15, but failed. >> >> Any ideas on why this error comes?.. >> >> Thx >> phani
