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The Tomcat Web container provides a native clustering solution that can be configured through Geronimo using gbean definitions within config.xml or your deployment descriptors . This document will go through the available GBeans and how to configure them for clustering in a Geronimo server with a tomcat web container.
A cluster configuration should be considered when you want to improve the scalability and availability of your Web application. The following sections provide detailed instructions on how to set up your cluster nodes and how to deploy your applications with tomcat clustering enabled.
Table of Contents |
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Setting up a clustering environment
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- Ensure that every object placed in the HTTP session implements java.io.Serializable. The clustering feature serializes the objects when it distributes them to the other nodes in the cluster.
- The deployment descriptor for your Web application, that is the
web.xml
file in the Web archive, must indicate that your Web application is distributable. To do this, insert the distributable element in the deployment descriptor.Code Block XML XML borderStylesolid title Excerpt from web.xml borderStyle solid <?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd"> <web-app> <display-name> ... </display-name> <description> ... </description> <distributable> <distributable/> ... </web-app>
...
For every node in the cluster, update config.xml as follows after the server is stopped
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<gbean name="TomcatEngine"> <attribute name="initParams"> name=geronimo jvmRoute=nodeId </attribute> </gbean> |
Engaging load balancing and failover
Initially, the server configuration includes an AJP connector suitable for exchanging messages with a load balancing service. See Configuring a remote Apache HTTP server for more information about the HTTP server configuration.
Deploying your application to a cluster
To deploy your application to a cluster and make sure HTTP sessions are replicated successfully, cluster configuration elements of Tomcat Web containers must be configured using GBean definitions within deployment plans.
If you want to deploy your Web application to a cluster, install your WAR files to the appropriate cluster member, assuring that you use the correct deployment plan for each member. Here is the template for your Web application deployment plan
- Sample geronimo-web.xml for geronimo 2.1.4 and below
Code Block XML XML title geronimo-web.xml borderStyle solid <?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"> managerClassName=org.apache.catalina.ha.session.DeltaManager expireSessionsOnShutdown=false useDirtyFlag=true notifyListenersOnReplication=true </attribute> <reference name="TomcatValveChain"> <name>ReplicationValve</name> </reference> <reference name="ClusterListenerChain"> <name>ClusterSessionListener</name> </reference> <reference name="Channel"> <name>TomcatGroupChannel</name> </reference> </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>
- Sample geronimo-web.xml for geronimo versions above 2.1.4. This does not include g 2.2
After applying fix to 2.1 through GERONIMO-4187 there are some modifications which needs to picked up by your configuration through geronimo-web.xml
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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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where
- web-cluster-server1 should match the WAR file name. It can be different for each node in the cluster.
On each node, deploy your Web application, either via admin console or deploy command, following this syntax:
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where
- name is replaced with a user name authorized to manage the server. If you omit this option, you will be prompted to enter a user name.
- word is replaced with the password used to authenticate the user. If you omit this option, you will be prompted to enter a password.
- archive is replaced with a file specification to your Web application WAR file.
- plan is replaced with a file specification to your deployment plan.
Note: After server installation, the default user name is initially system, and the default password is manager.
Sample Tomcat clustering with unicast configuration
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 an application-scoped unicast clustering configuration on one node. The sample assumes there are only two static members in a cluster environment.
A few notes for better understanding of the sample deployment plan:
- 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 ofStaticMember1Interceptor
andStaticMember2Interceptor
. - Use
StaticMemberGBean
to specify the information of the second static member and port number used for communication. - Use
TcpPingInterceptor
to send a ping to another member periodically. You can manage ping interval by setting the interval attibute forTcpPingInterceptor
. It is a good practice to set interval to 240.
To convert this example to a multicast configuration, the DisableMCastInterceptor
, StaticMemberInterceptor
, and StaticMember
definitions should be removed. Also, the value for the address attribute for the ReceiverGBean
definition should be changed to auto.
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...
<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"/>
<reference name="ClusterListenerChain">
<name>TomcatClusterListenerChain</name>
</reference>
<reference name="TomcatValveChain">
<name>ReplicationValve</name>
</reference>
<reference name="Channel">
<name>TomcatChannel</name>
</reference>
<reference name="ClusterManager">
<name>TomcatClusterManager</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="TomcatClusterManager" class="org.apache.geronimo.tomcat.cluster.ClusterManagerGBean">
<attribute name="className">org.apache.catalina.ha.session.DeltaManager</attribute>
<attribute name="initParams">name=${clusterName}
channelSendOptions=6
expireSessionsOnShutdown=false
notifyListenersOnReplication=true
mapSendOptions=6
</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=TCP_port1
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>
</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.
Configuration 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.
Interceptors can perform actions when a message is sent or received. Use a reference NextInterceptor
in interceptor configurations to chain interceptors together. You can control how the client requests are processed by arranging the order of the interceptor chain. In the following sample code, when the TcpFailureDetector
intercepter catches errors, it calls the next interceptor StaticMember1Interceptor
. The static member referenced inside StaticMember1Interceptor
, static member 2 in this example, will immediately take over the work of the first static member.
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...
<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>
...
|
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. The request is passed along until a static member can handle the work or it gets to the end.
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...
<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 a complete example of setting up application-scoped unicast clustering with more than two nodes.
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...
<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=TCP_port1
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.