Tomcat session persistence configuration scheme

1. Session retention based on Tomcat's own cluster session mode

 

1. This experiment is based on running 2 tomcat instances on the same machine for testing

tomcat01:  172.16.68.73:8080

tomcat02: 172.16.68.73:8081

tomcat version: 8.0.51

 

2.tomcat01 configuration

　　(1). Modify /usr/local/tomcat01/conf/server.xml to find the registered cluster node, and add the following code after it:

      

<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=" 172.16.68.73 "       --IP address 
                      port=" 4000 "　　　　　　　　　　--Port
                      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.ClusterSessionListener"/>
        </Cluster>    

　　

　　(2). Modify /usr/local/tomcat01/conf/web.xml and add the following code before the last </webapps> of the file

   <distributable/> -- add this code
</web-app>

　　

　　(3). Create a test project test, put /usr/local/tomcat01/conf/web.xml into the project,

#mkdir -p /usr/local/tomcat01/webapps/test/WEB-INF
#cp /usr/local/tomcat01/conf/web.xml /usr/local/tomcat01/webapps/test/WEB-INF

　　

　　Note: In the actual production environment, directly modify the web.xml under the corresponding project, and then add the following code. For example

#vi /usr/local/tomcat/webapps/b2c/web.xml

<distributable/> -- add this code 
</web-app>

　　

3.tomcat02 configuration

　　(1). Modify /usr/local/tomcat01/conf/server.xml to find the registered cluster node, and add the following code after it:

<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=" 172.16.68.73 " --IP address
                      port=" 4001 " -- because it is on the same machine, modify the port to 4001
                      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.ClusterSessionListener"/>
        </Cluster>

　　

　　(2). Modify /usr/local/tomcat02/conf/web.xml and add the following code before the last </webapps> of the file

   <distributable/> -- add this code
</web-app>

　　

　　(3). Create a test project test and put /usr/local/tomcat02/conf/web.xml into the project

#mkdir -p /usr/local/tomcat02/webapps/test/WEB-INF
#cp /usr/local/tomcat02/conf/web.xml /usr/local/tomcat02/webapps/test/WEB-INF