Tomcat 集群部署配置（测试）

最近公司项目由于开发人员没有sessions共享的概念，所以准备使用tomcat集群来完成session的共享。

首先，测试环境如下：

      |-tomcat01 :8081   shutdown 8015

Nginx -|-tomcat02 :8082   shutdown 8025

      |_tomcat03 :8083   shutdown 8035

1，详细部署

1,1JDK安装

./jdk-6u25-linux-x64-rpm.bin 

vim /etc/profile

添加如下配置，由于打算在同一台服务器上安装多个tomcat，如下配置：

JAVA_HOME=/usr/java/jdk1.6.0_25

CLASS_PATH=$JAVA_HOME/lib:$JAVA_HOME/jre/lib

PATH=$PATH:$JAVA_HOME/bin:.

export  JAVA_HOME

1，2安装tomcat

tar -zxvf apache-tomcat-7.0.20.tar.gz 

  mv apache-tomcat-7.0.20 tomcat01

  cd /usr/tomcat01/conf/

vim /usr/tomcat01/conf/server.xml#分别更改tomcat目录下server.xml的配置，端口按照之前设置的。

tomcat01

 

 

 tomcat02

 

 

  tomcat03

   

 

1，3配置tomcat启动变量 同理tomcat01 tomcat02 tomcat03

vim /usr/tomcat01/bin/startup.sh 

添加如下定义

JAVA_HOME=/usr/java/jdk1.6.0_25

CATALINA_HOME=/usr/tomcat01

export  CATALINA_HOME

1，4配置集群

vim /usr/tomcat01/conf/server.xml

+++++++++++++++++++++++++++++++++++++++++++

channelSendOptions="8">


expireSessionsOnShutdown="false"
notifyListenersOnReplication="true"/>

#tomcat集群IO层配置

address="228.0.0.4"                                             #组播地址
port="45564"
frequency="500"
dropTime="3000"/>

address="auto"
port="4000"
autoBind="100"
selectorTimeout="5000"
maxThreads="6"/>









filter=""/>



tempDir="/tmp/war-temp/"
deployDir="/tmp/war-deploy/"
watchDir="/tmp/war-listen/"
watchEnabled="false"/>

按照如上的配置，分别配置tomcat01 02 03

然后在

vim /usr/tomcat01/webapps/ROOT/WEB-INF/web.xml

添加该配置

2，配置Nginx（略）

upstream bakend {
server 127.0.0.1:8081 weight=10;
server 127.0.0.1:8082 weight=10;
server 127.0.0.1:8083 weight=10;
}

3，分别在tomcat的webapps目录下放如下测试脚本:

<%@ page contentType="text/html; charset=Utf8" %>
<%@ page import="java.util.*" %>
Cluster App Test

Server Info:
<%
out.println(request.getLocalAddr() + " : " + request.getLocalPort()+"");%>
<%
out.println(" ID " + session.getId()+"");
String dataName = request.getParameter("dataName");

if (dataName != null && dataName.length() > 0) {
String dataValue = request.getParameter("dataValue");
session.setAttribute(dataName, dataValue);
}

out.print("Session List");

Enumeration e = session.getAttributeNames();

while (e.hasMoreElements()) {
String name = (String)e.nextElement();
String value = session.getAttribute(name).toString();
out.println( name + " = " + value+"");
System.out.println( name + " = " + value);
}
%>

Name:

Value:

4,启动nginx和tomcat集群

然后在浏览器输入

在name和Value输入

提交页面发现seession只会在各个tomcat直接复制，且输入的值不变

5，查看主机日志会有如下：

Sep 28, 2011 4:30:48 PM org.apache.catalina.ha.tcp.SimpleTcpCluster memberAdded
INFO: Replication member added:org.apache.catalina.tribes.membership.MemberImpl[tcp://{127, 0, 0, 1}:4002,{127, 0, 0, 1},4002, alive=58252, securePort=-1, UDP Port=-1, id={-103 -97 33 33 -4 -105 77 -113 -110 108 -31 122 67 -90 -22 123 }, payload={}, command={}, domain={}, ]
Sep 28, 2011 4:30:48 PM org.apache.catalina.ha.tcp.SimpleTcpCluster memberAdded
INFO: Replication member added:org.apache.catalina.tribes.membership.MemberImpl[tcp://{127, 0, 0, 1}:4001,{127, 0, 0, 1},4001, alive=79844, securePort=-1, UDP Port=-1, id={-29 -73 109 76 57 4 64 -50 -69 32 -7 -44 78 90 -115 -60 }, payload={}, command={}, domain={}, ]
Sep 28, 2011 4:30:48 PM org.apache.catalina.tribes.io.BufferPool getBufferPool
INFO: Created a buffer pool with max size:104857600 bytes of type:org.apache.catalina.tribes.io.BufferPool15Impl

通过监听端口可以发现，session正常进行复制了。

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