tomcat cluster session 复制方式集群配置

一、概述
   实现多个tomcat的集群，tomcat之间自动复制session，实现在一个tomcat失效后另一个tomcat可用，并有正确的session
二、软件
   tomcat6.029
三、配置步骤
   a.解压tomcat到文件夹，生成2分，tomcat1和tomcat2
   b.分别打开tomcat下的server.xml 设置或添加cluster 节点，设置下面蓝色字体处，jvmRoute用于区分不同的tomcat
     Receiver 下的address 和port用于设置本tomcat的tcpListenAddress和监听端口，如果两个tomcat在一台电脑需要设置不同的端口，如果不在同一台则可以用最简方式：<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat2"> 简单设置下jvmRoute ,cluster节点去除即可。注意：不同tomcat版本配置中的节点属性可能不一样，可以参考tomcat官网的说明文档http://tomcat.apache.org/tomcat-6.0-doc/cluster-howto.html

<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat1">

      

       <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="127.0.0.1"
                      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>

c. 在两个项目下的web.xml中分别添加

四，在项目下分别建立test测试文件，在浏览器输入localhost：8080/test.jsp和localhost:8081/test.jsp 发现session不变，tomcat标志改变说明在两个tomcat中用的是同一个sessionid。还可以添加session属性，访问两个tomcat的test.jsp都能成功。说明部署成功，
<%@ page contentType="text/html; charset=utf8" %>
<%@ page import="java.util.*" %>
<html><head><title>Cluster App Test</title></head>
<body>
Server Info:
<%
out.println(request.getLocalAddr() + " : " + request.getLocalPort()+"<br>");%>
<%
out.println("<br> ID " + session.getId()+"<br>");
// 如果有新的 Session 属性设置
String dataName = request.getParameter("dataName");
if (dataName != null && dataName.length() > 0) {
     String dataValue = request.getParameter("dataValue");
     session.setAttribute(dataName, dataValue);
}
out.println("<b>Session 列表</b><br>");
System.out.println("============================");
Enumeration e = session.getAttributeNames();
while (e.hasMoreElements()) {
     String name = (String)e.nextElement();
     String value = session.getAttribute(name).toString();
     out.println( name + " = " + value+"<br>");
         System.out.println( name + " = " + value);
   }
%>
<form action="test.jsp" method="POST">
    名称:<input type=text size=20 name="dataName">
     <br>
    值:<input type=text size=20 name="dataValue">
     <br>
    <input type=submit>
   </form>
</body>
</html>

tomcat cluster session 复制方式 集群配置

猜你喜欢

tomcat cluster session 复制方式集群配置