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

安装jdk和tomcat 两台虚拟机都要做

#下载最新的jdkcd /usr/local/srcwget tar zxvf  jdk-7u79-linux-x64.tar.gzmv mv jdk1.7.0_79/ /usr/local/java#输出环境变量vim /etc/profile.d/java.shJAVA_HOME=/usr/local/javaPATH=$JAVA_HOME/bin:$PATHexport JAVA_HOME PATH#使环境变量生效source /etc/profile.d/java.sh#下载最新的tomcatcd /usr/local/srcwget tar zxvf  apache-tomcat-7.0.63.tar.gzmv apache-tomcat-7.0.63 /usr/local/tomcat7#输出环境变量vim /etc/profile.d/tomcat.shCATALINA_HOME=/usr/local/tomcat7PATH=$CATALINA_HOME/bin:$PATHexport CATALINA_HOME PATH#使环境变量生效source /etc/profile.d/tomcat.sh#测试java和tomcat[root@localhost ~]# java -versionjava 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 versionUsing CATALINA_BASE:   /usr/local/tomcat7Using CATALINA_HOME:   /usr/local/tomcat7Using CATALINA_TMPDIR: /usr/local/tomcat7/tempUsing JRE_HOME:        /usr/local/javaUsing CLASSPATH:       /usr/local/tomcat7/bin/bootstrap.jar:/usr/local/tomcat7/bin/tomcat-juli.jarServer version: Apache Tomcat/7.0.63Server built:   Jun 30 2015 08:08:33 UTCServer number:  7.0.63.0OS Name:        LinuxOS Version:     2.6.32-358.el6.x86_64Architecture:   amd64JVM Version:    1.7.0_79-b15JVM 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
     
      #在默认主机上添加一个test应用
      
       #在tomcat7的应用目录下添加test目录和WEB-INFcd /usr/local/tomcat7/webappsmkdir testcp -r ROOT/WEB-INF test#新建测试的jsp文件cd testvim index.jsp<%@ page language="java" %> 
       TomcatA   
       
        
         TomcatA 
        
  
       
               Session ID  <% session.setAttribute("abc","abc"); %>    <%= session.getId() %>          Created on    <%= session.getCreationTime() %>      #tomcat2的配置基本同tomcat1，只需改动jvmRoute="tomcat2"#启动2个tomcatstartup.sh

安装jk

cd /usr/local/srcwget http://apache.fayea.com/tomcat/tomcat-connectors/jk/tomcat-connectors-1.2.40-src.tar.gztar -zxvf tomcat-connectors-1.2.40-src.tar.gzcd tomcat-connectors-1.2.40-src/native/./configure --with-apxs=/usr/local/apache/bin/apxs  --with-java-home=/usr/local/javamakemake install

配置mod_jk模块

vim conf/httpd.conf 添加一下内容LoadModule jk_module  modules/mod_jk.so
     
        JkWorkersFile conf/workers.properties  JkMount   /* controller  JkMount   /jkstatus jkstatus  JkLogFile     logs/mod_jk.log  JkLogLevel    info
      
         Options MultiViews  AuthType Basic  AuthName "Auther Center"  AuthUserFile conf/.htpasswd  require valid-user granted

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8009worker.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