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  1. Define all the static members involved in the deployment plan for each node.
  2. Use a reference "NextInterceptor" in interceptor configurations to chain interceptor together as you can see the configurations of DisableMcastInterceptor and TcpPingInterceptor in the sample below. You can control how the client requests are processed by arranging the order of the interceptor chain.
    Code Block
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    borderStylesolid
    titleinterceptor chain
    ...
    <gbean name="DisableMcastInterceptor" class="org.apache.geronimo.tomcat.cluster.ChannelInterceptorGBean">
     	 <attribute name="className">org.apache.geronimo.tomcat.interceptor.DisableMcastInterceptor</attribute>
     	 <attribute name="initParams"/>
     	 <reference name="NextInterceptor">
     	 <name>TcpPingInterceptor</name>
     	 </reference>
     	 </gbean>
     	 
    <gbean name="TcpPingInterceptor" class="org.apache.geronimo.tomcat.cluster.ChannelInterceptorGBean">
     	 <attribute name="className">org.apache.catalina.tribes.group.interceptors.TcpPingInterceptor</attribute>
     	 <attribute name="initParams">Interval=240</attribute>
     	 <reference name="NextInterceptor">
     	 <name>TcpFailureDetector</name>
     	 </reference>
     	 </gbean>
    ...
    
  3. Use a reference "NextStaticMember" in the second and subsequent StaticMember definitions, but not the last, to chain multiple static members.
    Code Block
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    borderStylesolid
    titlestatic member chain
    ...
    <gbean name="StaticMember2" class="org.apache.geronimo.tomcat.cluster.StaticMemberGBean">
    	  	 <attribute name="className">org.apache.catalina.tribes.membership.StaticMember</attribute>
    	  	 <attribute name="initParams">port=TCP_port2
    	  	 securePort=-1
    	  	 host=IPAddress2
    	  	 domain=test-domain
    	  	 UniqueId={2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}
    	  	 </attribute>
    	  	         <reference name="NextStaticMember">
    	 	  	 <name>StaticMember3</name>
    	  	         </reference>
    </gbean> 
    ...
    

See the following deployment plan snippet as an complete example of setting up application-scoped unicast clustering with more than two nodes.

Code Block
XML
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borderStylesolid
titleexcerpt from geronimo-web.xml
...
 	 <cluster>TomcatCluster</cluster>
 	 <gbean name="TomcatCluster" class="org.apache.geronimo.tomcat.cluster.CatalinaClusterGBean">
 	 <attribute name="className">org.apache.catalina.ha.tcp.SimpleTcpCluster</attribute>
 	 <attribute name="initParams">managerClassName=org.apache.catalina.ha.session.DeltaManager
 	 expireSessionsOnShutdown=false
 	 useDirtyFlag=true
 	 notifyListenersOnReplication=true
 	 </attribute>
 	 <reference name="ClusterListenerChain">
 	 <name>TomcatClusterListenerChain</name>
 	 </reference>
 	 <reference name="TomcatValveChain">
 	 <name>ReplicationValve</name>
 	 </reference>
 	 <reference name="Channel">
 	 <name>TomcatChannel</name>
 	 </reference>
 	 </gbean>
 	 
 	 <gbean name="TomcatClusterListenerChain" class="org.apache.geronimo.tomcat.cluster.ClusterListenerGBean">
 	 <attribute name="className">org.apache.catalina.ha.session.ClusterSessionListener</attribute>
 	 <attribute name="initParams"/>
 	 </gbean>
 	 
 	 <gbean name="ReplicationValve" class="org.apache.geronimo.tomcat.ValveGBean">
 	 <attribute name="className">org.apache.catalina.ha.tcp.ReplicationValve</attribute>
 	 <attribute name="initParams">.*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;</attribute>
 	 <reference name="NextValve">
 	 <type>TomcatValve</type>
 	 <name>JvmRouteBinderValve</name>
 	 </reference>
 	 </gbean>
 	 
 	 <gbean name="JvmRouteBinderValve" class="org.apache.geronimo.tomcat.ValveGBean">
 	 <attribute name="className">org.apache.catalina.ha.session.JvmRouteBinderValve</attribute>
 	 <attribute name="initParams">enabled=true</attribute>
 	 </gbean>
 	 
 	 <gbean name="TomcatChannel" class="org.apache.geronimo.tomcat.cluster.ChannelGBean">
 	 <attribute name="className">org.apache.catalina.tribes.group.GroupChannel</attribute>
 	 <attribute name="initParams"/>
 	 <reference name="Membership">
 	 <name>ClusterMembership</name>
 	 </reference>
 	 <reference name="Receiver">
 	 <name>ClusterReceiver</name>
 	 </reference>
 	 <reference name="Sender">
 	 <name>ClusterSender</name>
 	 </reference>
 	 <reference name="ChannelInterceptor">
 	 <name>DisableMcastInterceptor</name>
 	 </reference>
 	 </gbean>
 	 
 	 <gbean name="ClusterMembership" class="org.apache.geronimo.tomcat.cluster.MembershipServiceGBean">
 	 <attribute name="className">org.apache.catalina.tribes.membership.McastService</attribute>
 	 <attribute name="initParams">address=228.0.0.4
 	 port=45564
 	 frequency=500
 	 dropTime=3000
 	 </attribute>
 	 </gbean>

 	 <gbean name="ClusterReceiver" class="org.apache.geronimo.tomcat.cluster.ReceiverGBean">
 	 <attribute name="className">org.apache.catalina.tribes.transport.nio.NioReceiver</attribute>
 	 <attribute name="initParams">address=IPAddress1
 	 port=10200
 	 selectorTimeout=100
 	 maxThreads=6
 	 </attribute>
 	 </gbean>
 	 
	 
 	 <gbean name="ClusterSender" class="org.apache.geronimo.tomcat.cluster.SenderGBean">
 	 <attribute name="className">org.apache.catalina.tribes.transport.ReplicationTransmitter</attribute>
 	 </gbean>
 	 
 	 <gbean name="DisableMcastInterceptor" class="org.apache.geronimo.tomcat.cluster.ChannelInterceptorGBean">
 	 <attribute name="className">org.apache.geronimo.tomcat.interceptor.DisableMcastInterceptor</attribute>
 	 <attribute name="initParams"/>
 	 <reference name="NextInterceptor">
 	 <name>TcpPingInterceptor</name>
 	 </reference>
 	 </gbean>
 	 
 	 <gbean name="TcpPingInterceptor" class="org.apache.geronimo.tomcat.cluster.ChannelInterceptorGBean">
 	 <attribute name="className">org.apache.catalina.tribes.group.interceptors.TcpPingInterceptor</attribute>
 	 <attribute name="initParams">Interval=240</attribute>
 	 <reference name="NextInterceptor">
 	 <name>TcpFailureDetector</name>
 	 </reference>
 	 </gbean>
 	 
 	 <gbean name="TcpFailureDetector" class="org.apache.geronimo.tomcat.cluster.ChannelInterceptorGBean">
 	 <attribute name="className">org.apache.catalina.tribes.group.interceptors.TcpFailureDetector</attribute>
 	 <attribute name="initParams"/>
 	 <reference name="NextInterceptor">
 	 <name>StaticMember1Interceptor</name>
 	 </reference>
 	 </gbean>
 	 
 	 <gbean name="StaticMember1Interceptor" class="org.apache.geronimo.tomcat.cluster.ChannelInterceptorGBean">
 	 <attribute name="className">org.apache.catalina.tribes.group.interceptors.StaticMembershipInterceptor</attribute>
 	 <attribute name="initParams"/>
 	 <reference name="StaticMember">
 	 <name>StaticMember2</name>
 	 </reference>
 	 <reference name="NextInterceptor">
 	 <name>MessageDispatch15Interceptor</name>
 	 </reference>
 	 </gbean>
 	 
 	 <gbean name="MessageDispatch15Interceptor" class="org.apache.geronimo.tomcat.cluster.ChannelInterceptorGBean">
 	 <attribute name="className">org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor</attribute>
 	 <attribute name="initParams"/>
 	 <reference name="NextInterceptor">
 	 <name>ThroughputInterceptor</name>
 	 </reference>
 	 </gbean>
 	 
 	 <gbean name="ThroughputInterceptor" class="org.apache.geronimo.tomcat.cluster.ChannelInterceptorGBean">
 	 <attribute name="className">org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor</attribute>
 	 <attribute name="initParams"/>
 	 </gbean>
 	 
 	 <gbean name="StaticMember2" class="org.apache.geronimo.tomcat.cluster.StaticMemberGBean">
	 <attribute name="className">org.apache.catalina.tribes.membership.StaticMember</attribute>
	 <attribute name="initParams">port=TCP_port2
	  	 securePort=-1
	  	 host=IPAddress2
	  	 domain=test-domain
	  	 UniqueId={2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}
	 </attribute>
	 <reference name="NextStaticMember">
	 <name>StaticMember3</name>
	 </reference>
	 </gbean> 
	  	 
	 <gbean name="StaticMember3" class="org.apache.geronimo.tomcat.cluster.StaticMemberGBean">
	 <attribute name="className">org.apache.catalina.tribes.membership.StaticMember</attribute>
	 <attribute name="initParams">port=TCP_port3
	 	  	 securePort=-1
	 	  	 host=IPAddress3
	 	  	 domain=test-domain
	 	  	 UniqueId={2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}
	 </attribute>
         </gbean>
...

Where

  • IPAddress1 is the IP address or host name of current static member.
  • TCP_port1 is the TCP port on the current node to listen for session replication data from other static members.
  • IPAddress2 is the IP address or host name of the second static member.
  • TCP_port2 is the TCP port on the second static member to listen for session replication data from other static members
  • IPAddress3 is the IP address or host name of the third static member.
  • TCP_port3 is the TCP port on the third static member to listen for session replication data from other static members