环境准备
2台虚拟机，centos6.6
apache + tomcat1 10.0.0.141
tomcat2 10.0.0.140
apache的安装参照之前的文章
http://jwh5566.blog.51cto.com/7394620/1656742
安装jdk和tomcat 两台虚拟机都要做
#下载最新的jdk cd /usr/local/src wget tar zxvf jdk-7u79-linux-x64.tar.gz mv mv jdk1.7.0_79/ /usr/local/java #输出环境变量 vim /etc/profile.d/java.sh JAVA_HOME=/usr/local/java PATH=$JAVA_HOME/bin:$PATH export JAVA_HOME PATH #使环境变量生效 source /etc/profile.d/java.sh #下载最新的tomcat cd /usr/local/src wget tar zxvf apache-tomcat-7.0.63.tar.gz mv apache-tomcat-7.0.63 /usr/local/tomcat7 #输出环境变量 vim /etc/profile.d/tomcat.sh CATALINA_HOME=/usr/local/tomcat7 PATH=$CATALINA_HOME/bin:$PATH export CATALINA_HOME PATH #使环境变量生效 source /etc/profile.d/tomcat.sh #测试java和tomcat [root@localhost ~]# java -version java version "1.7.0_79" Java(TM) SE Runtime Environment (build 1.7.0_79-b15) Java HotSpot(TM) 64-Bit Server VM (build 24.79-b02, mixed mode) [root@localhost ~]# catalina.sh version Using CATALINA_BASE: /usr/local/tomcat7 Using CATALINA_HOME: /usr/local/tomcat7 Using CATALINA_TMPDIR: /usr/local/tomcat7/temp Using JRE_HOME: /usr/local/java Using CLASSPATH: /usr/local/tomcat7/bin/bootstrap.jar:/usr/local/tomcat7/bin/tomcat-juli.jar Server version: Apache Tomcat/7.0.63 Server built: Jun 30 2015 08:08:33 UTC Server number: 7.0.63.0 OS Name: Linux OS Version: 2.6.32-358.el6.x86_64 Architecture: amd64 JVM Version: 1.7.0_79-b15 JVM Vendor: Oracle Corporation
修改tomcat1的server.xml
vim /usr/local/tomcat7/conf/server.xml
#在下面这一行添加jvmRoute="tomcat1" 标示后端的tomcat实例
<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat1">
#在默认主机上添加一个test应用
<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true">
<Context path="" docBase="test" debug="0"/>
#在tomcat7的应用目录下添加test目录和WEB-INF
cd /usr/local/tomcat7/webapps
mkdir test
cp -r ROOT/WEB-INF test
#新建测试的jsp文件
cd test
vim index.jsp
<%@ page language="java" %>
<html>
<head><title>TomcatA</title></head>
<body>
<h1><font color="red">TomcatA </h1>
<table align="centre" border="1">
<tr>
<td>Session ID</td>
<% session.setAttribute("abc","abc"); %>
<td><%= session.getId() %></td>
</tr>
<tr>
<td>Created on</td>
<td><%= session.getCreationTime() %></td>
</tr>
</table>
</body>
</html>
#tomcat2的配置基本同tomcat1，只需改动jvmRoute="tomcat2"
#启动2个tomcat
startup.sh安装jk
cd /usr/local/src wget http://apache.fayea.com/tomcat/tomcat-connectors/jk/tomcat-connectors-1.2.40-src.tar.gz tar -zxvf tomcat-connectors-1.2.40-src.tar.gz cd tomcat-connectors-1.2.40-src/native/ ./configure --with-apxs=/usr/local/apache/bin/apxs --with-java-home=/usr/local/java make make install
配置mod_jk模块
vim conf/httpd.conf 添加一下内容 LoadModule jk_module modules/mod_jk.so <IfModule jk_module> JkWorkersFile conf/workers.properties JkMount /* controller JkMount /jkstatus jkstatus JkLogFile logs/mod_jk.log JkLogLevel info </IfModule> <Location /jkstatus> Options MultiViews AuthType Basic AuthName "Auther Center" AuthUserFile conf/.htpasswd require valid-user granted </Location>
在conf目录下vim workers.properties加入如下内容
1 worker.list=controller,jkstatus #========tomcat1======== worker.tomcat1.port=8009 #指定tomcat1服务器AJP的端口,默认为8009 worker.tomcat1.host=10.0.0.141 #指定tomcat1服务器IP或域名 worker.tomcat1.type=ajp13 #指定tomcat1与apache AJP通讯协议 worker.tomcat1.lbfactor=1 #指定负载平衡因数,只有启用了负载平衡才有用. #========tomcat2======== worker.tomcat2.port=8009 worker.tomcat2.host=10.0.0.140 worker.tomcat2.type=ajp13 worker.tomcat2.lbfactor=1 #========controller负载平衡控制器======== worker.controller.type=lb #指定controller类型 worker.controller.balance_workers=tomcat1,tomcat2 #指定负载平衡的tomcat worker.controller.sticky_session=0 #worker.controller.sticky_session_force=0 #指定是否粘性session
最后重新启动httpd，刷新即可负载，持久会话的话，只需将上述
worker.controller.sticky_session=1
添加jkstatus访问用户
bin/htpasswd -c ../conf/.htpasswd admin
访问jkstatus
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原文地址：http://jwh5566.blog.51cto.com/7394620/1682071
