步骤:
修改应用1中server.xml中的
<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat1" >,修改应用2中server.xml中的
<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat2" >,注意jvmRoute不能相同
在server.xml中添加如下代码
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster" channelSendOptions="8"> <Manager className="org.apache.catalina.ha.session.DeltaManager" expireSessionsOnShutdown="false" notifyListenersOnReplication="true"/> <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="192.168.7.153" port="4000" 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"/> </Channel> <Valve className="org.apache.catalina.ha.tcp.ReplicationValve" filter=""/> <Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/> <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.JvmRouteSessionIDBinderListener"/> <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/> </Cluster>
注意receiver节点下的port 端口,两个tomcat端口不能相同 ,如果有多网卡或者虚拟网卡需要在membership中添加mcastBindAddress="127.0.0.1" 。
将两个tomcat里面的Server,Connector,Connector AJP端口改为不一样的。
将两个tomcat里面的web.xml文件</web-app>标签前面加上<distributable/> ,表示Tomcat要为此web应用复制 Session。
应用中存入session的对象需要实现Serializable,意为可序列化的。