THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://geronimo.apache.org/xml/ns/j2ee/web/tomcat-2.0.1"
xmlns:dep="http://geronimo.apache.org/xml/ns/deployment-1.2">
<dep:environment>
<dep:moduleId>
<dep:groupId>org.mygroup</dep:groupId>
<dep:artifactId>web-cluster-server1</dep:artifactId>
<dep:version>2.1.1.2</dep:version>
<dep:type>war</dep:type>
</dep:moduleId>
<dep:dependencies/>
<dep:hidden-classes/>
<dep:non-overridable-classes/>
</dep:environment>
<context-root>/servlet-examples-cluster</context-root>
<security-realm-name>geronimo-properties-realm</security-realm-name>
<security>
<default-principal>
<principal name="anonymous" class="org.apache.geronimo.security.realm.providers.GeronimoUserPrincipal"/>
</default-principal>
<role-mappings>
<role role-name="tomcat">
<principal name="admin" class="org.apache.geronimo.security.realm.providers.GeronimoGroupPrincipal"/>
</role>
</role-mappings>
</security>
<cluster>TomcatCluster</cluster>
<gbean class="org.apache.geronimo.tomcat.cluster.CatalinaClusterGBean" name="TomcatCluster">
<attribute name="className">org.apache.catalina.ha.tcp.SimpleTcpCluster</attribute>
<attribute name="initParams"/>
<reference name="TomcatValveChain">
<name>ReplicationValve</name>
</reference>
<reference name="ClusterListenerChain">
<name>ClusterSessionListener</name>
</reference>
<reference name="Channel">
<name>TomcatGroupChannel</name>
</reference>
<reference name="ClusterManager">
<name>TomcatClusterManager</name>
</reference>
</gbean>
<gbean name="TomcatClusterManager"
class="org.apache.geronimo.tomcat.cluster.ClusterManagerGBean">
<attribute
name="className">org.apache.catalina.ha.session.DeltaManager</attribute>
<attribute name="initParams">name=somename
expireSessionsOnShutdown=false
useDirtyFlag=true
notifyListenersOnReplication=true
</attribute>
</gbean>
<gbean class="org.apache.geronimo.tomcat.cluster.ChannelGBean" name="TomcatGroupChannel">
<attribute name="className">org.apache.catalina.tribes.group.GroupChannel</attribute>
<attribute name="initParams"/>
<reference name="Membership">
<name>TomcatMembership</name>
</reference>
<reference name="Receiver">
<name>TomcatReceiver</name>
</reference>
<reference name="Sender">
<name>TomcatSender</name>
</reference>
<reference name="ChannelInterceptor">
<name>TomcatChannelInterceptor</name>
</reference>
</gbean>
<gbean class="org.apache.geronimo.tomcat.cluster.MembershipServiceGBean" name="TomcatMembership">
<attribute name="className">org.apache.catalina.tribes.membership.McastService</attribute>
<attribute name="initParams">
mcastAddr=228.0.0.4
mcastPort=45564
mcastFrequency=500
mcastDropTime=3000
</attribute>
</gbean>
<gbean class="org.apache.geronimo.tomcat.cluster.ReceiverGBean" name="TomcatReceiver">
<attribute name="className">org.apache.catalina.tribes.transport.nio.NioReceiver</attribute>
<attribute name="initParams">
tcpListenAddress=IPAddressIn
tcpListenPort=4001
tcpSelectorTimeout=100
tcpThreadCount=6
</attribute>
</gbean>
<gbean class="org.apache.geronimo.tomcat.cluster.SenderGBean" name="TomcatSender">
<attribute name="className">org.apache.catalina.tribes.transport.ReplicationTransmitter</attribute>
<attribute name="initParams">
replicationMode=pooled
waitForAck=true
</attribute>
</gbean>
<gbean class="org.apache.geronimo.tomcat.ValveGBean" name="ReplicationValve">
<attribute name="className">org.apache.catalina.ha.tcp.ReplicationValve</attribute>
<attribute name="initParams">filter=.*\.gif;.*\.js;.*\.css;.*\.png;.*\.jpeg;.*\.jpg;.*\.htm;.*\.html;.*\.txt;</attribute>
<reference name="NextValve">
<name>JvmRouteBinderValve</name>
</reference>
</gbean>
<gbean class="org.apache.geronimo.tomcat.ValveGBean" name="JvmRouteBinderValve">
<attribute name="className">org.apache.catalina.ha.session.JvmRouteBinderValve</attribute>
<attribute name="initParams">enabled=true</attribute>
</gbean>
<gbean class="org.apache.geronimo.tomcat.cluster.ClusterListenerGBean" name="ClusterSessionListener">
<attribute name="className">org.apache.catalina.ha.session.ClusterSessionListener</attribute>
<reference name="NextListener">
<name>JvmRouteSessionIDBinderListener</name>
</reference>
</gbean>
<gbean class="org.apache.geronimo.tomcat.cluster.ClusterListenerGBean" name="JvmRouteSessionIDBinderListener">
<attribute name="className">org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener</attribute>
</gbean>
<gbean class="org.apache.geronimo.tomcat.cluster.ChannelInterceptorGBean" name="TomcatChannelInterceptor">
<attribute name="className">org.apache.catalina.tribes.group.interceptors.TcpFailureDetector</attribute>
</gbean>
</web-app>
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Static members in a cluster are defined using org.apache.geronimo.tomcat.cluster.StaticMemberGBean in the deployment plan. You have to specify all static members within the deployment plan to make sure the application is clustered successfully. Refer to the sample code below for a an application-scoped unicast clustering configuration on one node. The sample assumes there are only two static members in a cluster environment.
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- Use ReceiverGBean to specify the information of the current node and port number used for communication.
- Use ChannelInterceptorGBeans to disable the multicast cluster configurations, and specify how the static member are chained together as you can see the configurations of StaticMember1Interceptor and StaticMember2Interceptor.
- Use StaticMemberGBean to specify the information of the second static member and port number used for communication.
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- 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
Configuration
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of unicast clustering with more than two nodes
To set up an application-scoped unicast clustering with more than two nodes, make sure you have defined all the static members in the deployment plan for each server node.
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All the static members involved should be defined in the deployment plan as well as the relationship between these static members. Use a reference NextStaticMember in the definition of each static member, except for the last one, to chain static members together. When static member 2 in this example fails to take over the work, static member 3 will immediately take over the work. It is the same for longer static member chain. When a static member fails to take over the work of the previous static member, it calls the next static member in the chain, . This operation is passed along until a static member can handle the work or it gets to the end.
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