windows下apache服务器和tomcat集群

http://lym6520.iteye.com/blog/416280

上篇文章呢将乐如何集成apache服务器和tomcat服务器，见文章http://lym6520.iteye.com/admin/blogs/412046，接下来讲讲如何tomcat集群
首先呢，修改配置文件workers.properties

# the list of workers
worker.list=router,worker1,worker2

worker.worker1.type=ajp13
worker.worker1.host=ip
worker.worker1.port=port
worker.worker1.lbfactor=100

worker.worker2.type=ajp13
worker.worker2.host=ip
worker.worker2.port=port
worker.worker2.lbfactor=100

worker.router.type = lb
worker.router.balance_workers=worker1,worker2
worker.router.sticky_session = true
worker.router.sticky_session_force = false

这个配置文件，配置了两个tomcat和一个负载平衡器router（要注意的是，worker1和worker2分别对应各自tomcat服务器server.xml的 Engine的jvmRoute值）
这样tomcat集群基本上配置完成了，但是这样会有个问题，会话不能共享，也就是说我将同一个项目分别部署在这两个tomcat上，通过apache服务器访问这个项目，发现会话不能共享，需要重复登入，为了解决这个问题，可以再两个tomcat服务器的server.xml里的Engine元素增加以下配置信息（该配置信息可以再tomcat官网中找到）：

<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="auto"
                     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>

 <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="auto"
                      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> 

（在Membership 元素中有个bind属性，可以明确的指定当前服务器的ip地址）
这样就能保证会话可以在两个tomcat将共享了，当然在项目的web.xml中加入如下配置：

<!--  将会话移交给tomcat server.xml配置的会话管理器管理 -->
  <distributable />

<!--  将会话移交给tomcat server.xml配置的会话管理器管理 --> 
  <distributable /> 

ok，大功告成！下次我将介绍如何在linux下配置apache服务器！