2、设置tomcat的java变量
cd /usr/local/tomcat_1/bin/ && vi setenv.sh 创建一个setenv.sh脚本文件，添加如下语句即可 JAVA_HOME=/usr/java/jdk1.6.0_18 JAVA_JRE=/usr/java/jdk1.6.0_18/jre 并且拷贝setenv.sh文件到tomcat_2/bin/下 ： cp -p /usr/local/tomcat_1/bin/setenv.sh /usr/local/tomcat_2/bin 下即可！ 保存退出 检查两个tomcat下bin目录的*.sh 文件是否有可执行权限，如果没有则进入到相应的目录执行 chmod o+x *.sh 即可！ 给两个tomcat分别创建不同的目录如下：mkdir -p /usr/webapps/{www_1,www_2}
3、设置Tomcat的 server.xml文件：
【以下是我的tomcat配置文件具体内容，本想已附件的形式发的，本博客目前还不支持附件功能，重要修改的地方供大家参考，如果把所有配置都粘贴在这里，显示有问题，所有用了两个web链接！这样一来部分解释就产生了影响。不明白的欢迎留言】
这个是完整的server.xml文件下载地址：
两个Tomcat配置的cluster里面的端口分别为4000、4001 ，必须设置成不同的端口；而且得分别设置两个jvmroute名称，一会在nginx中会用到！ 配置Tomcat session会话复制： 分别在两个tomcat的conf下web.xml文件里面加入如下一行即可: <distributable/> 这个是加入tomcat的session复制的，做tomcat集群必须需要这一步，否则用户的session就无法正常使用 <distributable/>直接加在</web-app>之前就可以了 配置完毕后，我们测试一下广播 java -cp tomcat-replication.jar MCaster 224.0.0.1 45564 Terminal1 java -cp tomcat-replication.jar MCaster 224.0.0.1 45564 Terminal2 如果不报错则能正常广播 tomcat-replication.jar 下载:~fhanik/tomcat-replication.jar 如果是两台机器的话，可以用tcpdump 抓包看看！
Tomcat配置完毕，启动两个tomcat，先启动tomcat1，tomcat_1启动日志如下：
信息: Initializing Coyote HTTP/1.1 on http-8080 2011-3-18 19:56:21 org.apache.catalina.startup.Catalina load 信息: Initialization processed in 1088 ms 2011-3-18 19:56:21 org.apache.catalina.core.StandardService start 信息: Starting service Catalina 2011-3-18 19:56:21 org.apache.catalina.core.StandardEngine start 信息: Starting Servlet Engine: Apache Tomcat/6.0.18 2011-3-18 19:56:21 org.apache.catalina.ha.tcp.SimpleTcpCluster start 信息: Cluster is about to start 2011-3-18 19:56:21 org.apache.catalina.tribes.transport.ReceiverBase bind 信息: Receiver Server Socket bound to:/192.168.2.79:4000 2011-3-18 19:56:21 org.apache.catalina.tribes.membership.McastServiceImpl setupSocket 信息: Setting cluster mcast soTimeout to 500 2011-3-18 19:56:21 org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers 信息: Sleeping for 1000 milliseconds to establish cluster membership, start level:4 2011-3-18 19:56:22 org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers 信息: Done sleeping, membership established, start level:4 2011-3-18 19:56:22 org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers 信息: Sleeping for 1000 milliseconds to establish cluster membership, start level:8 2011-3-18 19:56:23 org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers 信息: Done sleeping, membership established, start level:8 2011-3-18 19:56:23 org.apache.catalina.ha.deploy.FarmWarDeployer start 严重: FarmWarDeployer can only work as host cluster subelement! 2011-3-18 19:56:23 org.apache.catalina.ha.session.DeltaManager start 信息: Register manager to cluster element Engine with name Catalina 2011-3-18 19:56:23 org.apache.catalina.ha.session.DeltaManager start 信息: Starting clustering manager at 2011-3-18 19:56:23 org.apache.catalina.ha.session.DeltaManager getAllClusterSessions 信息: Manager [localhost#]: skipping state transfer. No members active in cluster group. 2011-3-18 19:56:23 org.apache.catalina.ha.session.JvmRouteBinderValve start 信息: JvmRouteBinderValve started 2011-3-18 19:56:23 org.apache.coyote.http11.Http11Protocol start 信息: Starting Coyote HTTP/1.1 on http-8080 2011-3-18 19:56:24 org.apache.jk.common.ChannelSocket init 信息: JK: ajp13 listening on /0.0.0.0:8411 2011-3-18 19:56:24 org.apache.jk.server.JkMain start 信息: Jk running ID=0 time=0/42 config=null 2011-3-18 19:56:24 org.apache.catalina.startup.Catalina start 信息: Server startup in 2676 ms
Tomcat_2的日志如下：
000,{-64, -88, 2, 79},4000, alive=86901,id={78 42 25 -19 -102 3 64 10 -76 93 69 -43 45 76 95 -112 }, payload={}, command={}, domain={}, ]. This operation will timeout if no session state has been received within 60 seconds. 2011-3-18 19:57:48 org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor report 信息: ThroughputInterceptor Report[ Tx Msg:1 messages Sent:0.00 MB (total) Sent:0.00 MB (application) Time:0.01 seconds Tx Speed:0.04 MB/sec (total) TxSpeed:0.04 MB/sec (application) Error Msg:0 Rx Msg:1 messages Rx Speed:0.00 MB/sec (since 1st msg) Received:0.00 MB] 2011-3-18 19:57:48 org.apache.catalina.ha.session.DeltaManager waitForSendAllSessions 信息: Manager [localhost#]; session state send at 11-3-18 下午7:57 received in 125 ms. 2011-3-18 19:57:48 org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor report 信息: ThroughputInterceptor Report[ Tx Msg:2 messages Sent:0.00 MB (total) Sent:0.00 MB (application) Time:0.05 seconds Tx Speed:0.02 MB/sec (total) TxSpeed:0.02 MB/sec (application) Error Msg:0 Rx Msg:2 messages Rx Speed:0.00 MB/sec (since 1st msg) Received:0.00 MB] 2011-3-18 19:57:49 org.apache.catalina.ha.session.JvmRouteBinderValve start 信息: JvmRouteBinderValve started 2011-3-18 19:57:49 org.apache.coyote.http11.Http11Protocol start 信息: Starting Coyote HTTP/1.1 on http-8081 2011-3-18 19:57:49 org.apache.jk.common.ChannelSocket init 信息: JK: ajp13 listening on /0.0.0.0:8412 2011-3-18 19:57:49 org.apache.jk.server.JkMain start 信息: Jk running ID=0 time=0/34 config=null 2011-3-18 19:57:49 org.apache.catalina.startup.Catalina start 信息: Server startup in 2962 ms
