tomcat集群

修改service.xml文件
       <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster" channelSendOptions="6">
 <Manager className="org.apache.catalina.ha.session.BackupManager" expireSessionsOnShutdown="false" notifyListenersOnReplication="true" mapSendOptions="6"/>
<Channel className="org.apache.catalina.tribes.group.GroupChannel">
<Membership className="org.apache.catalina.tribes.membership.McastService" address="228.0.0.4" port="45564" frequency="500" dropTime="3000"/>
<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver" address="auto" port="4001" selectorTimeout="100" 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=".*.gif;.*.js;.*.jpg;.*.png;.*.htm;.*.html;.*.css;.*.txt;"/>
 <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer" tempDir="/tmp/war-temp/" deployDir="/tmp/war-deploy/" watchDir="/tmp/war-listen/" watchEnabled="false"/>
<ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/>
</Cluster>
    在项目web.xml中的web-app前添加<distributable />
或者在context.xml中修改contest <Context distributable="true">

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