Tomcat 6.0.35 : Cluster and new node

Mon, 26 Dec 2011 06:33:32 -0800 

Hi all,


Context :
  I have a cluster with 2 nodes (both on linux).

  * The master node is configured as below : *

<Engine name="Catalina" defaultHost="localhost" jvmRoute="Tomcat-1">
<Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> 

<Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true"
            xmlValidation="false" xmlNamespaceAware="false">
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster" channelSendOptions="8"> 

<Manager className="org.apache.catalina.ha.session.DeltaManager"
                   expireSessionsOnShutdown="false"
                   notifyContainerListenersOnReplication="true"
                   notifySessionListenersOnReplication="true"
                   notifyListenersOnReplication="true"/>

<Channel className="org.apache.catalina.tribes.group.GroupChannel">

<Membership className="org.apache.catalina.tribes.membership.McastService"
                        address="228.0.0.3"
                        port="45566"
                        frequency="500"
                        dropTime="3000"/>
<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
                      address="192.168.30.51"
                      port="3100"
                      autoBind="100"
                      selectorTimeout="5000"
                      maxThreads="6"/>
<Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter"> <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/> 
</Sender>
<Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/> <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/> <Interceptor className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/> 
</Channel>
<Valve className="org.apache.catalina.ha.tcp.ReplicationValve" filter="" statistics="true"/> 
<Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>

<Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer"
                    tempDir="/usr/local/tomcat/webapps/tempdir"
                    deployDir="/usr/local/tomcat/webapps/"
                    watchDir="/usr/local/tomcat/watchdir/"
                    watchEnabled="true"/>
<ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/> <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/> 

</Cluster>

</Host>
</Engine>

  * The slave node is configured as below : *

<Engine name="Catalina" defaultHost="localhost" jvmRoute="Tomcat-1">
<Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> 

<Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true"
            xmlValidation="false" xmlNamespaceAware="false">
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster" channelSendOptions="8"> 

<Manager className="org.apache.catalina.ha.session.DeltaManager"
                   expireSessionsOnShutdown="false"
                   notifyContainerListenersOnReplication="true"
                   notifySessionListenersOnReplication="true"
                   notifyListenersOnReplication="true"/>

<Channel className="org.apache.catalina.tribes.group.GroupChannel">

<Membership className="org.apache.catalina.tribes.membership.McastService"
                        address="228.0.0.3"
                        port="45566"
                        frequency="500"
                        dropTime="3000"/>
<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
                      address="192.168.30.54"
                      port="3100"
                      autoBind="100"
                      selectorTimeout="5000"
                      maxThreads="6"/>
<Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter"> <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/> 
</Sender>
<Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/> <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/> <Interceptor className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/> 
</Channel>
<Valve className="org.apache.catalina.ha.tcp.ReplicationValve" filter="" statistics="true"/> 
<Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>

<Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer"
                    tempDir="/usr/local/tomcat/webapps/tempdir"
                    deployDir="/usr/local/tomcat/webapps/"
                    watchDir="/usr/local/tomcat/watchdir/"
                    watchEnabled="false"/>
<ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/> <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/> 

</Cluster>

</Host>
</Engine>

All works fine.
I try to add a new war file in the master node folder "/usr/local/tomcat/watchdir/", after few seconds, the war is correctly deployed on both nodes. Now i try to add a third node configured exactily as the slave (i just change the IP address of receiver to match with the one of the machine). In the master node log, i can see a new member is added, with the correct IP, but the war already deployed on the cluster aren't deployed on the new node. 

 * Question : *
What's the way to be able to auto deploy on new node without restart the master node ? (when i restart the master node, all the nodes of the cluster are OK). 

Best regards


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