Tomcat集群配置笔记

1. 软件环境：

 Apache: Apache_2.2.14 (1个)

 mod_jk: mod_jk_1.2.28_httpd_2.2.3.so (1个)

 tomcat: tomcat5.5.7(2个)

2.把mod_jk_1.2.28_httpd_2.2.3.so拷入apache安装目录modules下。

3.在apache的安装目录下找到httpd.conf文件,我的目录为D:\Apache2.2\conf。

 在该目录下新建mod_jk.conf文件，内容如上：

#============================================

#加载mod_jk Module

LoadModule jk_module modules/mod_jk-apache-2.0.55.so

#指定 workers.properties文件路径(在第三步我们建立该文件)

JkWorkersFile conf/workers.properties

#指定那些请求交给tomcat处理,”controller”为在workers.propertise里指定的负载分配控制器

JkMount /*.jsp controller

#==============================================

修改httpd.conf, 在文件最后加上下面一句话:

include “D:\Apache2.2\conf\mod_jk.conf”

3.同上一目录新建workers.properties,内容如下：

worker.list = controller,tomcat1,tomcat2  #server 列表

#========tomcat1========

worker.tomcat1.port=8009      #ajp13 端口号，在tomcat下server.xml配置,默认8009

worker.tomcat1.host=localhost #tomcat的主机地址，如不为本机，请填写ip地址

worker.tomcat1.type=ajp13

worker.tomcat1.lbfactor = 1   #server的加权比重，值越高，分得的请求越多

#========tomcat2========

worker.tomcat2.port=9009      #ajp13 端口号，在tomcat下server.xml配置,默认8009

worker.tomcat2.host=localhost #tomcat的主机地址，如不为本机，请填写ip地址

worker.tomcat2.type=ajp13

worker.tomcat2.lbfactor = 1   #server的加权比重，值越高，分得的请求越多

#========controller,负载均衡控制器========

worker.controller.type=lb

worker.controller.balanced_workers=tomcat1,tomcat2   #指定分担请求的tomcat

worker.controller.sticky_session=1 #会话粘性，大于0表示同一会有同一TOMCAT处理

4.修改TOMCAT的配置,这里主要是防止端口冲突，如果TOMCAT位于不同主机上，可SHIP该步。

   tomcat1: <Server port=”8005″ shutdown=”SHUTDOWN”>

            <!– Define a non-SSL HTTP/1.1 Connector on port 8080 –>

            <Connector port=”8080″ maxHttpHeaderSize=”8192″

               maxThreads=”150″ minSpareThreads=”25″ maxSpareThreads=”75″

               enableLookups=”false” redirectPort=”8443″ acceptCount=”100″

               connectionTimeout=”20000″ disableUploadTimeout=”true” />

   

   tomcat2: <Server port=”8005″ shutdown=”SHUTDOWN”>

             <!– Define a non-SSL HTTP/1.1 Connector on port 8080 –>

              <Connector port=”8090″ maxHttpHeaderSize=”8192″

               maxThreads=”150″ minSpareThreads=”25″ maxSpareThreads=”75″

               enableLookups=”false” redirectPort=”8443″ acceptCount=”100″

               connectionTimeout=”20000″ disableUploadTimeout=”true” />

5.配置集群打开各自的<Cluster>.

   

  tomcat1: <Cluster className=”org.apache.catalina.cluster.tcp.SimpleTcpCluster”

                 managerClassName=”org.apache.catalina.cluster.session.DeltaManager”

                 expireSessionsOnShutdown=”false”

                 useDirtyFlag=”true”

                 notifyListenersOnReplication=”true”>

            <Membership 

                className=”org.apache.catalina.cluster.mcast.McastService”

                mcastAddr=”228.0.0.4″

                mcastPort=”45564″

                mcastFrequency=”500″

                mcastDropTime=”3000″/>

            <Receiver 

                className=”org.apache.catalina.cluster.tcp.ReplicationListener”

                tcpListenAddress=”auto”

                tcpListenPort=”4001″

                tcpSelectorTimeout=”100″

                tcpThreadCount=”6″/>

            <Sender

                className=”org.apache.catalina.cluster.tcp.ReplicationTransmitter”

                replicationMode=”pooled”

                ackTimeout=”15000″

                waitForAck=”true”/>

            <Valve className=”org.apache.catalina.cluster.tcp.ReplicationValve”

                   filter=”.*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;”/>

                   

            <Deployer className=”org.apache.catalina.cluster.deploy.FarmWarDeployer”

                      tempDir=”/tmp/war-temp/”

                      deployDir=”/tmp/war-deploy/”

                      watchDir=”/tmp/war-listen/”

                      watchEnabled=”false”/>

            <ClusterListener className=”org.apache.catalina.cluster.session.ClusterSessionListener”/>

        </Cluster>      

   tomcat2: 同上,tcpListenPort=”4001″ 这里改为tcpListenPort=”4002″

6.添加<distributable/>到web.xml.

例：<?xml version=”1.0″ encoding=”UTF-8″?>

<web-app version=”2.5″ xmlns=”
http://java.sun.com/xml/ns/javaee”

 xmlns:xsi=”
http://www.w3.org/2001/XMLSchema-instance”

 xsi:schemaLocation=”
http://java.sun.com/xml/ns/javaee 

 
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd“>

 <distributable/>

….

本文转自 anranran 51CTO博客，原文链接:

http://blog.51cto.com/guojuanjun/327653