apache+tomcat负载均衡

# 实验环境

Apache 192.168.200.101
Tomcat1 192.168.200.102
Tomcat2 192.168.200.103

# 一、安装tomcat1

# （1）解压jdk

tar xf jdk-7u65-linux-x64.gz
mv jdk1.7.0_65 /usr/local/java

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# （2）配置环境变量

vim /etc/profile.d/java.sh  #添加以下内容
export JAVA_HOME=/usr/local/java  #设置java的根目录
export PATH=$PATH:$JAVA_HOME/bin

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# （3）生效脚本

source /etc/profile.d/java.sh

# （4）安装tomcat

tar xf apache-tomcat-7.0.54.tar.gz
mv apache-tomcat-7.0.54 /usr/local/tomcat7
mkdir -p /webapp
cd /webapp
vim index.jsp   // 设置默认网页，新建jsp页面并添加以下内容 
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>  
<html>
        <head>
        <title> JSP test1 page</title>
        </head> 
        <body>
        <% out .println("welcom to test sits,http://www.text1.com");%>
        </body>
</html>

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编辑主配置文件

vim /usr/local/tomcat7/conf/server.xml  #在130行下添加以下红色部分内容

128       <Host name="localhost"  appBase="webapps"
129             unpackWARs="true" autoDeploy="true"
130             xmlValidation="false" xmlNamespaceAware="false">
             <Context docBase="/webapp" path="" reloadable="false" >
             </Context>

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启动tomcat

/usr/local/tomcat7/bin/startup.sh

# 二、安装tomcat2

# （1）解压jdk

tar xf jdk-7u65-linux-x64.gz
mv jdk1.7.0_65 /usr/local/java

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# （2）配置环境变量

vim /etc/profile.d/java.sh  #添加以下内容
export JAVA_HOME=/usr/local/java  #设置java的根目录
export PATH=$PATH:$JAVA_HOME/bin

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# （3）生效脚本

source /etc/profile.d/java.sh

# （4）安装tomcat

tar xf apache-tomcat-7.0.54.tar.gz
mv apache-tomcat-7.0.54 /usr/local/tomcat7
mkdir -p /webapp
cd /webapp

vim index.jsp   #设置默认网页，新建jsp页面并添加以下内容 
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>  
<html>
        <head>
        <title> JSP test2 page</title>
        </head> 
        <body>
        <% out .println("welcom to test sits,http://www.text2.com");%>
        </body>
</html>

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编辑主配置文件

vim /usr/local/tomcat7/conf/server.xml  #在130行下添加以下红色部分内容
128       <Host name="localhost"  appBase="webapps"
129             unpackWARs="true" autoDeploy="true"
130             xmlValidation="false" xmlNamespaceAware="false">
             <Context docBase="/webapp" path="" reloadable="false" >
             </Context>

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启动tomcat

/usr/local/tomcat7/bin/startup.sh

保证tomcat能够正常访问

# 三、安装apache

tar xf httpd-2.2.17.tar.gz
cd httpd-2.2.17
./configure --prefix=/usr/local/httpd --enable-so --enable-cgi --enable-charset --enable-charset-lite --enable-rewrite --enable-proxy --enable-proxy-http --enable-proxy-ajp --enable-proxy-balabcer --enable-lbmenthod-heartbeat --enable-slotmem-shm --enable-slotmem-plain --enable-watchdog

make && make install
ln -s /usr/local/httpd/bin/* /usr/local/bin
cp /usr/local/httpd/bin/apachectl  /etc/init.d/httpd

vi /etc/init.d/httpd  #编辑启动脚本 ，增加红色部分内容
#!/bin/sh
#chkconfig:345 66 88
#description:http apache

chmod +x /etc/init.d/httpd
chkconfig --add httpd

vim /usr/local/httpd/conf/httpd.conf   #修改配置文件
// 去掉388行的注释，改为：
Include conf/extra/httpd-vhosts.conf

// 修改虚拟主机配置文件
vim /usr/local/httpd/conf/extra/httpd-vhosts.conf
<VirtualHost *:80>
    DocumentRoot /webapp/index.jsp
    ServerName CentOS6-node1
    ProxyVia Off
    ProxyRequests Off
    ProxyPreserveHost On
    ProxyPass / http://192.168.200.102:8080/
    ProxyPassReverse / http://192.168.200.102:8080/
</VirtualHost>

<VirtualHost *:80>
    DocumentRoot /webapp/index.jsp
    ServerName CentOS6-node1
    ProxyVia Off
    ProxyRequests Off
    ProxyPreserveHost On
    ProxyPass / http://192.168.200.103:8080/
    ProxyPassReverse / http://192.168.200.103:8080/
</VirtualHost>

ProxyPass / balancer://proxy/
<Proxy balancer://proxy/>
BalancerMember http://192.168.200.102:8080/
BalancerMember http://192.168.200.103:8080/
</Proxy>

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启动apache

/etc/init.d/httpd start  //出现以下warning不用管
Warning: DocumentRoot [/webapp/index.jsp] does not exist
Warning: DocumentRoot [/webapp/index.jsp] does not exist

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# 四、==测试==

使用浏览器访问http://192.168.200.101 刷新轮流出现tomcat1和tomcat2界面如下：

上次更新: 2022/06/12, 15:48:09

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