I am using tomcat 5.5 and have a clustering / replication problem.
I have a WAR file that i wish to deploy replicate and deploy across the
cluster, however because of the way this application conducts its own
upgrades, then the war files must be deployed serially.
That is to say that the primary node, where the new war is first
deployed, must complete before the next node is presented with (or
deploys) the new war. However for subsequent nodes it does not matter if
they are replicated concurrently.
I have been investigating the Cluster attributes in server.xml and in
particular the Sender attribute. After much STFW I have tried changing
waitForAck, replicationMode and timing parameters. However it seems
random when dropping war files in to the watched directory, whether the
replication is serial or not. Usually it is not. Is there any more
documentation other than the tomcat sites and FAQ linked from there?
<Cluster
className="org.apache.catalina.cluster.tcp.SimpleTcpCluster"
managerClassName="org.apache.catalina.session.StandardManager"
expireSessionsOnShutdown="false"
useDirtyFlag="true"
notifyListenersOnReplication="false">
<Sender
className="org.apache.catalina.cluster.tcp.ReplicationTransmitter"
replicationMode="synchronous"
recoverTimeout="5000"
recoverCounter="6"
doTransmitterProcessingStats="true"
doProcessingStats="true"
doWaitAckStats="true"
queueTimeWait="true"
queueDoStats="true"
queueCheckLock="true"
ackTimeout="15000"
waitForAck="true"
keepAliveTimeout="80000"
keepAliveMaxRequestCount="-1"/>
<Membership
className="org.apache.catalina.cluster.mcast.McastService"
mcastAddr="228.2.2.9"
mcastPort="45564"
mcastFrequency="500"
mcastDropTime="3000"
replicationMode="synchronous" />
<Deployer
className="org.apache.catalina.cluster.deploy.FarmWarDeployer"
tempDir="C:\GWServersTEMP\ClaimCenter2\Tomcat 5.5.17\temp"
deployDir="C:\GWServersTEMP\ClaimCenter2\Tomcat 5.5.17\webapps"
watchDir="C:\GWServersTEMP\ClaimCenter1\Tomcat 5.5.17\webapps"
watchEnabled="false" />
</Cluster>
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