一、环境介绍
二、安装后端服务器

三、安装前端Apache服务

四、配置Apache使用mod_jk模块实现代理及负载均衡

五、配置Apache基于mod_proxy模块实现代理及负载均衡

六、论坛安装

七、安装并配置Keepalived实现前端高可用

 

一、环境介绍

Apache+Tomcat构建Tomcat负载均衡集群_第1张图片

系统版本：CentOS 6.4_x86_64 

Mysql版本：mysql-5.1.66-2.el6_3.x86_64 

Apache版本：httpd-2.2.25 点此下载

Keepalived版本：keepalived-1.2.7 点此下载

Tomcat版本：apache-tomcat-7.0.33 点此下载

Jdk版本： jdk-7u40-linux-x64 点此下载

Tomcat-commectors版本：tomcat-connectors-1.2.37 点此下载

论坛版本：JspRun!_6.0.0_GBK 点此下载

环境介绍：

当用户通过 "www.allen.com" 域名访问时，首先是由前端两台Apache代理服务器响应并转发到后端Tomcat服务器上，而在Apache上做的是反向代理负载均衡到后端Tomcat服务器上，前端服务器使用Keepalived做的高可用集群，【Apache1默认为Master，Apache2为Backup】虚拟IP地址为"172.16.14.10"模拟为公网IP；当然这里数据库只有一台主机会成为点故障，这里不要介绍Mysql的高可用，如果有兴趣可以看前面写的博客 

提示：这里使用Keepalived做高可用时，前面所有的服务都已完成后，最后实现的对前端服务器做高可用

二、安装后端Tomcat与Mysql服务器

1、在Tomcat1与Tomcat2服务器上安装Tomcat，安装方法相同，这里只介绍一次

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安装JDK
# rpm -ivh jdk-7u40-linux-x64.rpm
# vim /etc/profile.d/java.sh
exportJAVA_HOME=/usr/java/latest
exportPATH=$JAVA_HOME/bin:$PATH
# . /etc/profile.d/java.sh
# java -version
java version "1.7.0_40"
Java(TM) SE Runtime Environment (build 1.7.0_40-b43)
Java HotSpot(TM) 64-Bit Server VM (build 24.0-b56, mixed mode)
------------------------------------------------------------------------
安装Tomcat
# tar xf apache-tomcat-7.0.33.tar.gz -C /usr/local/
# cd /usr/local/
# ln -s apache-tomcat-7.0.33 tomcat
# vim /etc/profile.d/tomcat.sh
exportCATALINA_HOME=/usr/local/tomcat
exportPATH=$CATALINA_HOME/bin:$PATH
# . /etc/profile.d/tomcat.sh
# catalina.sh version
Using CATALINA_BASE: /usr/local/tomcat
Using CATALINA_HOME: /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME: /usr/java/latest
Using CLASSPATH: /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
Server version: Apache Tomcat/7.0.33
Server built: Nov 18 2012 04:15:21
Server number: 7.0.33.0
OS Name: Linux
OS Version: 2.6.32-358.el6.x86_64
Architecture: amd64
JVM Version: 1.7.0_40-b43
JVM Vendor: Oracle Corporation

2、启动Tomcat服务并访问测试，默认访问端口为"8080";如下

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# catalina.sh start
Using CATALINA_BASE: /usr/local/tomcat
Using CATALINA_HOME: /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME: /usr/java/latest
Using CLASSPATH: /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
# jps
2283 Jps
2272 Bootstrap
# ss -tanlp | grep 8080
LISTEN 0 100 :::8080 :::* users:(("java",2272,40))

Apache+Tomcat构建Tomcat负载均衡集群_第2张图片

3、开启Tomcat管理及状态页面

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# vim /usr/local/tomcat/conf/tomcat-users.xml
"manager-gui"/>
"admin-gui"/>
"allen"password="admin"roles="manager-gui,admin-gui"/>
# catalina.sh stop
# catalina.sh start

4、访问Tomcat后台管理

Apache+Tomcat构建Tomcat负载均衡集群_第3张图片

Apache+Tomcat构建Tomcat负载均衡集群_第4张图片

5、安装Mysql服务器

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######安装Mysql并创建数据库，授权用户访问新创建的数据库有所有权，方便后面使用
[root@Mysql ~]# yum -y install mysql-server
[root@Mysql ~]# service mysqld start
[root@Mysql ~]# mysql
mysql> create database bbs;
mysql> grant all on bbs.* to  'bbsuser'@'172.16.%.%'identified by 'bbspass';
mysql> flush privileges;
----------------------------------------------------------------------
远程连接数据库测试授权用户是否能连接成功
# mysql -ubbsuser -pbbspass -h 172.16.14.5 -e 'show databases';
+--------------------+
| Database |
+--------------------+
| information_schema |
| bbs |
|  test|
+--------------------+

三、安装前端Apache服务

1、在Apache1与Apache2服务器上安装Httpd软件，安装方法相同，这里只介绍一次

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# tar xf httpd-2.2.25.tar.bz2
# cd httpd-2.2.25
# yum -y install gcc gcc-c++ openssl-devel pcre-devel
# ./configure --prefix=/usr/local/apache --sysconfdir=/etc/httpd --enable-modules=most --enable-so --enable-ssl --enable-cgi --enable-rewrite --with-zlib --with-pcre --enable-mpms-shared=all --with-mpm=prefork --enable-proxy --enable-proxy-http --enable-proxy-ajp --enable-proxy-balancer --enable-cache --enable-cache-disk --enable-mem-cache --enable-file-cache --enable-proxy-connect
# make && make install
# cp build/rpm/httpd.init /etc/init.d/httpd
------修改如下内容
# vim /etc/init.d/httpd
httpd=${HTTPD-/usr/local/apache/bin/httpd}
pidfile=${PIDFILE-/usr/local/apache/logs/${prog}.pid}
lockfile=${LOCKFILE-/var/lock/subsys/${prog}}
RETVAL=0
# check for 1.3 configuration
check13 () {
CONFFILE=/etc/httpd/httpd.conf
----------------------------------------------------------------------
修改环境变量并把Httpd加入到系统服务
# echo "PATH=/usr/local/apache/bin:$PATH" >> /etc/profile.d/http.sh
# . /etc/profile.d/http.sh
# ln -s /usr/local/apache/include/ /usr/include/httpd
# chkconfig --add httpd
----------------------------------------------------------------------
创建测试页
# echo "

APACHE

" > /usr/local/apache/htdocs/index.html

2、在Apache1与Apache2服务器上安装"tomcat-connectors"

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# tar xf tomcat-connectors-1.2.37-src.tar.gz
# cd tomcat-connectors-1.2.37-src/native/
# ./configure --with-apxs=/usr/local/apache/bin/apxs
# make && make install
------------------------------------------------------------------------
安装完成后会生成如下文件
# ls /usr/local/apache/modules/
mod_jk.so
------------------------------------------------------------------------
启动Httpd服务
#service httpd start
# ss -tanl |grep 80
LISTEN 0 128 :::80 :::*

3、访问测试Apache是否正常工作

Apache+Tomcat构建Tomcat负载均衡集群_第5张图片

四、配置Apache使用mod_jk模块实现代理及负载均衡

1、修改Apache主配置文件，包含一个文件并创建该文件；实现代理功能

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将下面指令添加到文件末尾即可
# vim /etc/httpd/httpd.conf
Include /etc/httpd/extra/mod_jk.conf
------------------------------------------------------------------------
创建文件添加如下内容
# vim /etc/httpd/extra/mod_jk.conf
LoadModule jk_module modules/mod_jk.so
JkWorkersFile /etc/httpd/extra/workers.properties
JkLogFile logs/mod_jk.log
JkLogLevel debug
JkMount /* TomcatA
JkMount /status/ stat1
------------------------------------------------------------------------
# vim /etc/httpd/extra/workers.properties
worker.list=TomcatA,stat1
worker.TomcatA.port=8009
worker.TomcatA.host=172.16.14.3
worker.TomcatA.type=ajp13
worker.TomcatA.lbfactor=1
worker.stat1. type= status
----------------------------------------------------------------------
# service httpd restart

2、修改后端Tomcat1服务器，添加一个虚拟主机并提供测试页面

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[root@Tomcat1 ~]# cd /usr/local/tomcat/conf/
[root@Tomcat1 conf]# cp server.xml server.xml.bak
[root@Tomcat1 conf]# vim server.xml
######修改如下内容
"Catalina"defaultHost="www.allen.com"jvmRoute="TomcatA">
######在"Engine"中添加如下内容
"www.allen.com"appBase="/web/allen"
unpackWARs= "true"autoDeploy="true">
"org.apache.catalina.valves.AccessLogValve"directory="logs"
prefix= "allen_access_log."suffix=".txt"
pattern= "%h %l %u %t "%r" %s %b"/>
""docBase="/web/allen"/>
</Host>
----------------------------------------------------------------------
######创建网站存放目录并创建测试页
[root@Tomcat1 ~]# mkdir -p /web/allen
[root@Tomcat1 ~]# vim /web/allen/index.jsp
<%@ page language= "java"%>
<head>TomcatA<</code><code class="bash plain">/title</code><code class="bash plain">><</code><code class="bash plain">/head</code><code class="bash plain">></code></span></span> </div> <div class="line number21 index20 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;"><body></span></code> </div> <div class="line number22 index21 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><h1><font color=</code><span style="color:#000000;"><code class="bash string">"red"</code><code class="bash plain">>TomcatA <</code><code class="bash plain">/font</code><code class="bash plain">><</code><code class="bash plain">/h1</code><code class="bash plain">></code></span></span> </div> <div class="line number23 index22 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;"><table align=</span></code> <span style="color:#000000;"><code class="bash string"><span style="font-family:nsimsun;">"centre"</span></code><span style="font-family:nsimsun;"><code class="bash plain">border=</code><code class="bash string">"1"</code><code class="bash plain">></code></span></span> </div> <div class="line number24 index23 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><</code><span style="color:#000000;"><code class="bash functions">tr</code><code class="bash plain">></code></span></span> </div> <div class="line number25 index24 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><td>Session ID<</code><code class="bash plain">/td</code><code class="bash plain">></code></span> </div> <div class="line number26 index25 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><% session.setAttribute(</code><span style="color:#000000;"><code class="bash string">"abc"</code><code class="bash plain">,</code><code class="bash string">"abc"</code><code class="bash plain">); %></code></span></span> </div> <div class="line number27 index26 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><td><%= session.getId() %><</code><code class="bash plain">/td</code><code class="bash plain">></code></span> </div> <div class="line number28 index27 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/tr</code><code class="bash plain">></code></span> </div> <div class="line number29 index28 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><</code><span style="color:#000000;"><code class="bash functions">tr</code><code class="bash plain">></code></span></span> </div> <div class="line number30 index29 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><td>Created on<</code><code class="bash plain">/td</code><code class="bash plain">></code></span> </div> <div class="line number31 index30 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><td><%= session.getCreationTime() %><</code><code class="bash plain">/td</code><code class="bash plain">></code></span> </div> <div class="line number32 index31 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/tr</code><code class="bash plain">></code></span> </div> <div class="line number33 index32 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/table</code><code class="bash plain">></code></span> </div> <div class="line number34 index33 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/body</code><code class="bash plain">></code></span> </div> <div class="line number35 index34 alt2"> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/html</code><code class="bash plain">></code></span> </div> <div class="line number36 index35 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">----------------------------------------------------------------------</span></code> </div> <div class="line number37 index36 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;">######重启Tomcat服务并查看是否启动成功</span></code> </div> <div class="line number38 index37 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Tomcat1 ~]</code><code class="bash comments"><span style="color:#000000;"># catalina.sh stop</span></code></span> </div> <div class="line number39 index38 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Tomcat1 ~]</code><code class="bash comments"><span style="color:#000000;"># catalina.sh configtest</span></code></span> </div> <div class="line number40 index39 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Tomcat1 ~]</code><code class="bash comments"><span style="color:#000000;"># catalina.sh start</span></code></span> </div> <div class="line number41 index40 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Tomcat1 ~]</code><code class="bash comments"><span style="color:#000000;"># ss -tanlp | grep java</span></code></span> </div> <div class="line number42 index41 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">LISTEN 0 100 :::8080 :::* </code><span style="color:#000000;"><code class="bash functions">users</code><code class="bash plain">:((</code><code class="bash string">"java"</code><code class="bash plain">,6323,40))</code></span></span> </div> <div class="line number43 index42 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">LISTEN 0 1 ::ffff:127.0.0.1:8005 :::* </code><span style="color:#000000;"><code class="bash functions">users</code><code class="bash plain">:((</code><code class="bash string">"java"</code><code class="bash plain">,6323,52))</code></span></span> </div> <div class="line number44 index43 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">LISTEN 0 100 :::8009 :::* </code><span style="color:#000000;"><code class="bash functions">users</code><code class="bash plain">:((</code><code class="bash string">"java"</code><code class="bash plain">,6323,41))</code></span></span> </div> </div></td> </tr> </tbody> </table> </div> </div> <p><span style="font-family:'宋体', simsun;">3、访问Apache1主机，验证是否代理成功</span></p> <p><a href="http://img.e-com-net.com/image/info3/d27c79fb3f6d4424adcabb14a3765dee.jpg" target="_blank"><img title="2013-10-01_153314.gif" alt="Apache+Tomcat构建Tomcat负载均衡集群_第6张图片" src="http://img.e-com-net.com/image/info3/d27c79fb3f6d4424adcabb14a3765dee.jpg" width="650" height="152" style="border:1px solid black;"></a></p> <p><span style="color:#000000;"><span style="font-family:'宋体', simsun;color:#000000;">4、修改Apache配置文件(mod_jk.conf、workers.properties)；</span><strong><span style="font-family:'宋体', simsun;color:#000000;">实现负载均衡</span></strong></span><br></p> <div> <div class="syntaxhighlighter bash ie"> <table> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> <div class="line number14 index13 alt1"> 14 </div> <div class="line number15 index14 alt2"> 15 </div> <div class="line number16 index15 alt1"> 16 </div> <div class="line number17 index16 alt2"> 17 </div> <div class="line number18 index17 alt1"> 18 </div> <div class="line number19 index18 alt2"> 19 </div> <div class="line number20 index19 alt1"> 20 </div> <div class="line number21 index20 alt2"> 21 </div> <div class="line number22 index21 alt1"> 22 </div> <div class="line number23 index22 alt2"> 23 </div> <div class="line number24 index23 alt1"> 24 </div></td> <td class="code"> <div class="container"> <div class="line number1 index0 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># vim /etc/httpd/extra/mod_jk.conf</span></code> </div> <div class="line number2 index1 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">LoadModule jk_module modules</code><code class="bash plain">/mod_jk</code><code class="bash plain">.so</code></span> </div> <div class="line number3 index2 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">JkWorkersFile </code><code class="bash plain">/etc/httpd/extra/workers</code><code class="bash plain">.properties</code></span> </div> <div class="line number4 index3 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">JkLogFile logs</code><code class="bash plain">/mod_jk</code><code class="bash plain">.log</code></span> </div> <div class="line number5 index4 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">JkLogLevel debug</span></code> </div> <div class="line number6 index5 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">JkMount /* lbcluster</span></code> </div> <div class="line number7 index6 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">JkMount </code><code class="bash plain">/status/</code></span> <code class="bash plain"><span style="font-family:nsimsun;">stat1</span></code> </div> <div class="line number8 index7 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">------------------------------------------------------------------------</span></code> </div> <div class="line number9 index8 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># vim /etc/httpd/extra/workers.properties</span></code> </div> <div class="line number10 index9 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">worker.list=lbcluster,stat1</span></code> </div> <div class="line number11 index10 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">worker.TomcatA.port=8009</span></code> </div> <div class="line number12 index11 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">worker.TomcatA.host=172.16.14.3</span></code> </div> <div class="line number13 index12 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">worker.TomcatA.</code><span style="color:#000000;"><code class="bash functions">type</code><code class="bash plain">=ajp13</code></span></span> </div> <div class="line number14 index13 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">worker.TomcatA.lbfactor=1</span></code> </div> <div class="line number15 index14 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">worker.TomcatB.port = 8009</span></code> </div> <div class="line number16 index15 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">worker.TomcatB.host=172.16.14.4</span></code> </div> <div class="line number17 index16 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">worker.TomcatB.</span></code> <span style="color:#000000;"><code class="bash functions"><span style="font-family:nsimsun;">type</span></code><code class="bash plain"><span style="font-family:nsimsun;">= ajp13</span></code></span> </div> <div class="line number18 index17 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">worker.TomcatB.lbfactor = 1</span></code> </div> <div class="line number19 index18 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">worker.lbcluster.</span></code> <span style="color:#000000;"><code class="bash functions"><span style="font-family:nsimsun;">type</span></code><code class="bash plain"><span style="font-family:nsimsun;">= lb</span></code></span> </div> <div class="line number20 index19 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">worker.lbcluster.sticky_session = 0 </code><code class="bash comments"><span style="color:#000000;">#取值为{1|0}1将用户session与后端服务器绑定，0为不绑定，如果支持session复制或session共享可以设置为0</span></code></span> </div> <div class="line number21 index20 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">worker.lbcluster.balance_workers = TomcatA, TomcatB</span></code> </div> <div class="line number22 index21 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">worker.stat1.</span></code> <span style="color:#000000;"><code class="bash functions"><span style="font-family:nsimsun;">type</span></code><code class="bash plain"><span style="font-family:nsimsun;">= status</span></code></span> </div> <div class="line number23 index22 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">----------------------------------------------------------------------</span></code> </div> <div class="line number24 index23 alt1"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># service httpd reload</span></code> </div> </div></td> </tr> </tbody> </table> </div> </div> <p><span style="font-family:'宋体', simsun;">5、修改后端Tomcat2服务器，添加一个虚拟主机并提供测试页面</span></p> <div> <div class="syntaxhighlighter bash ie"> <table> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> <div class="line number14 index13 alt1"> 14 </div> <div class="line number15 index14 alt2"> 15 </div> <div class="line number16 index15 alt1"> 16 </div> <div class="line number17 index16 alt2"> 17 </div> <div class="line number18 index17 alt1"> 18 </div> <div class="line number19 index18 alt2"> 19 </div> <div class="line number20 index19 alt1"> 20 </div> <div class="line number21 index20 alt2"> 21 </div> <div class="line number22 index21 alt1"> 22 </div> <div class="line number23 index22 alt2"> 23 </div> <div class="line number24 index23 alt1"> 24 </div> <div class="line number25 index24 alt2"> 25 </div> <div class="line number26 index25 alt1"> 26 </div> <div class="line number27 index26 alt2"> 27 </div> <div class="line number28 index27 alt1"> 28 </div> <div class="line number29 index28 alt2"> 29 </div> <div class="line number30 index29 alt1"> 30 </div> <div class="line number31 index30 alt2"> 31 </div> <div class="line number32 index31 alt1"> 32 </div> <div class="line number33 index32 alt2"> 33 </div> <div class="line number34 index33 alt1"> 34 </div> <div class="line number35 index34 alt2"> 35 </div> <div class="line number36 index35 alt1"> 36 </div> <div class="line number37 index36 alt2"> 37 </div> <div class="line number38 index37 alt1"> 38 </div> <div class="line number39 index38 alt2"> 39 </div> <div class="line number40 index39 alt1"> 40 </div> <div class="line number41 index40 alt2"> 41 </div> <div class="line number42 index41 alt1"> 42 </div> <div class="line number43 index42 alt2"> 43 </div> <div class="line number44 index43 alt1"> 44 </div></td> <td class="code"> <div class="container"> <div class="line number1 index0 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Tomcat2 ~]</code><code class="bash comments"><span style="color:#000000;"># cd /usr/local/tomcat/conf/</span></code></span> </div> <div class="line number2 index1 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Tomcat2 conf]</code><code class="bash comments"><span style="color:#000000;"># cp server.xml server.xml.bak</span></code></span> </div> <div class="line number3 index2 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Tomcat2 conf]</code><code class="bash comments"><span style="color:#000000;"># vim server.xml</span></code></span> </div> <div class="line number4 index3 alt1"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;">######修改如下内容</span></code> </div> <div class="line number5 index4 alt2"> <code class="bash plain"><span style="font-family:nsimsun;"><Engine name=</span></code> <span style="color:#000000;"><code class="bash string"><span style="font-family:nsimsun;">"Catalina"</span></code><span style="font-family:nsimsun;"><code class="bash plain">defaultHost=</code><code class="bash string">"www.allen.com"</code></span><span style="font-family:nsimsun;"><code class="bash plain">jvmRoute=</code><code class="bash string">"TomcatB"</code><code class="bash plain">></code></span></span> </div> <div class="line number6 index5 alt1"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;">######在"Engine"中添加如下内容</span></code> </div> <div class="line number7 index6 alt2"> <code class="bash plain"><span style="font-family:nsimsun;"><Host name=</span></code> <span style="color:#000000;"><code class="bash string"><span style="font-family:nsimsun;">"www.allen.com"</span></code><span style="font-family:nsimsun;"><code class="bash plain">appBase=</code><code class="bash string">"/web/allen"</code></span></span> </div> <div class="line number8 index7 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">unpackWARs=</span></code> <span style="color:#000000;"><code class="bash string"><span style="font-family:nsimsun;">"true"</span></code><span style="font-family:nsimsun;"><code class="bash plain">autoDeploy=</code><code class="bash string">"true"</code><code class="bash plain">></code></span></span> </div> <div class="line number9 index8 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;"><Valve className=</span></code> <span style="color:#000000;"><code class="bash string"><span style="font-family:nsimsun;">"org.apache.catalina.valves.AccessLogValve"</span></code><span style="font-family:nsimsun;"><code class="bash plain">directory=</code><code class="bash string">"logs"</code></span></span> </div> <div class="line number10 index9 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">prefix=</span></code> <span style="color:#000000;"><code class="bash string"><span style="font-family:nsimsun;">"allen_access_log."</span></code><span style="font-family:nsimsun;"><code class="bash plain">suffix=</code><code class="bash string">".txt"</code></span></span> </div> <div class="line number11 index10 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">pattern=</span></code> <span style="color:#000000;"><code class="bash string"><span style="font-family:nsimsun;">"%h %l %u %t "%r" %s %b"</span></code><code class="bash plain"><span style="font-family:nsimsun;">/></span></code></span> </div> <div class="line number12 index11 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;"><Context path=</span></code> <span style="color:#000000;"><code class="bash string"><span style="font-family:nsimsun;">""</span></code><span style="font-family:nsimsun;"><code class="bash plain">docBase=</code><code class="bash string">"/web/allen"</code></span><code class="bash plain"><span style="font-family:nsimsun;">/></span></code></span> </div> <div class="line number13 index12 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/Host</code><code class="bash plain">></code></span> </div> <div class="line number14 index13 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">----------------------------------------------------------------------</span></code> </div> <div class="line number15 index14 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;">######创建网站存放目录并创建测试页</span></code> </div> <div class="line number16 index15 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Tomcat2 ~]</code><code class="bash comments"><span style="color:#000000;"># mkdir -p /web/allen</span></code></span> </div> <div class="line number17 index16 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Tomcat2 ~]</code><code class="bash comments"><span style="color:#000000;"># vim /web/allen/index.jsp</span></code></span> </div> <div class="line number18 index17 alt1"> <code class="bash plain"><span style="font-family:nsimsun;"><%@ page language=</span></code> <span style="color:#000000;"><code class="bash string"><span style="font-family:nsimsun;">"java"</span></code><code class="bash plain"><span style="font-family:nsimsun;">%></span></code></span> </div> <div class="line number19 index18 alt2"> <code class="bash plain"><span style="font-family:nsimsun;"><html></span></code> </div> <div class="line number20 index19 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><</code><span style="color:#000000;"><code class="bash functions">head</code><code class="bash plain">><title>TomcatB<</code><code class="bash plain">/title</code><code class="bash plain">><</code><code class="bash plain">/head</code><code class="bash plain">></code></span></span> </div> <div class="line number21 index20 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;"><body></span></code> </div> <div class="line number22 index21 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><h1><font color=</code><span style="color:#000000;"><code class="bash string">"blue"</code><code class="bash plain">>TomcatB <</code><code class="bash plain">/font</code><code class="bash plain">><</code><code class="bash plain">/h1</code><code class="bash plain">></code></span></span> </div> <div class="line number23 index22 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;"><table align=</span></code> <span style="color:#000000;"><code class="bash string"><span style="font-family:nsimsun;">"centre"</span></code><span style="font-family:nsimsun;"><code class="bash plain">border=</code><code class="bash string">"1"</code><code class="bash plain">></code></span></span> </div> <div class="line number24 index23 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><</code><span style="color:#000000;"><code class="bash functions">tr</code><code class="bash plain">></code></span></span> </div> <div class="line number25 index24 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><td>Session ID<</code><code class="bash plain">/td</code><code class="bash plain">></code></span> </div> <div class="line number26 index25 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><% session.setAttribute(</code><span style="color:#000000;"><code class="bash string">"abc"</code><code class="bash plain">,</code><code class="bash string">"abc"</code><code class="bash plain">); %></code></span></span> </div> <div class="line number27 index26 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><td><%= session.getId() %><</code><code class="bash plain">/td</code><code class="bash plain">></code></span> </div> <div class="line number28 index27 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/tr</code><code class="bash plain">></code></span> </div> <div class="line number29 index28 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><</code><span style="color:#000000;"><code class="bash functions">tr</code><code class="bash plain">></code></span></span> </div> <div class="line number30 index29 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><td>Created on<</code><code class="bash plain">/td</code><code class="bash plain">></code></span> </div> <div class="line number31 index30 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><td><%= session.getCreationTime() %><</code><code class="bash plain">/td</code><code class="bash plain">></code></span> </div> <div class="line number32 index31 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/tr</code><code class="bash plain">></code></span> </div> <div class="line number33 index32 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/table</code><code class="bash plain">></code></span> </div> <div class="line number34 index33 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/body</code><code class="bash plain">></code></span> </div> <div class="line number35 index34 alt2"> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/html</code><code class="bash plain">></code></span> </div> <div class="line number36 index35 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">----------------------------------------------------------------------</span></code> </div> <div class="line number37 index36 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;">######重启Tomcat服务并查看是否启动成功</span></code> </div> <div class="line number38 index37 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Tomcat2 ~]</code><code class="bash comments"><span style="color:#000000;"># catalina.sh stop</span></code></span> </div> <div class="line number39 index38 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Tomcat2 ~]</code><code class="bash comments"><span style="color:#000000;"># catalina.sh configtest</span></code></span> </div> <div class="line number40 index39 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Tomcat2 ~]</code><code class="bash comments"><span style="color:#000000;"># catalina.sh start</span></code></span> </div> <div class="line number41 index40 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Tomcat2 ~]</code><code class="bash comments"><span style="color:#000000;"># ss -tanlp | grep java</span></code></span> </div> <div class="line number42 index41 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">LISTEN 0 100 :::8080 :::* </code><span style="color:#000000;"><code class="bash functions">users</code><code class="bash plain">:((</code><code class="bash string">"java"</code><code class="bash plain">,6323,40))</code></span></span> </div> <div class="line number43 index42 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">LISTEN 0 1 ::ffff:127.0.0.1:8005 :::* </code><span style="color:#000000;"><code class="bash functions">users</code><code class="bash plain">:((</code><code class="bash string">"java"</code><code class="bash plain">,6323,52))</code></span></span> </div> <div class="line number44 index43 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">LISTEN 0 100 :::8009 :::* </code><span style="color:#000000;"><code class="bash functions">users</code><code class="bash plain">:((</code><code class="bash string">"java"</code><code class="bash plain">,6323,41))</code></span></span> </div> </div></td> </tr> </tbody> </table> </div> </div> <p><span style="font-family:'宋体', simsun;">6、访问Apache服务器，测试是否实现负载均衡<br></span></p> <p><a href="http://img.e-com-net.com/image/info3/3af82d490bd44eef92607722cc2fafdd.jpg" target="_blank"><img style="float:none;;border:1px solid black;" title="a.gif" alt="Apache+Tomcat构建Tomcat负载均衡集群_第7张图片" src="http://img.e-com-net.com/image/info3/3af82d490bd44eef92607722cc2fafdd.jpg" width="650" height="151"></a></p> <p><a href="http://img.e-com-net.com/image/info3/8931d7126392457f9702d14b59659f98.jpg" target="_blank"><img style="float:none;;border:1px solid black;" title="b.gif" alt="Apache+Tomcat构建Tomcat负载均衡集群_第8张图片" src="http://img.e-com-net.com/image/info3/8931d7126392457f9702d14b59659f98.jpg" width="650" height="152"></a></p> <p><strong><span style="font-family:'宋体', simsun;color:#e36c09;">由上可见，基于Apache的mod_jk模块已成功实现负载均衡功能</span></strong></p> <hr> <p><strong><span style="font-family:'宋体', simsun;color:#000000;font-size:18px;">五、配置Apache基于mod_proxy模块实现代理及负载均衡</span></strong></p> <p><span style="font-family:'宋体', simsun;">1、修改Apache的主配置文件，包含一个文件并创建该文件；</span><strong><span style="font-family:'宋体', simsun;">实现代理功能</span></strong></p> <p><strong><span style="font-family:'宋体', simsun;"></span></strong></p> <div> <div class="syntaxhighlighter bash ie"> <table> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> <div class="line number14 index13 alt1"> 14 </div> <div class="line number15 index14 alt2"> 15 </div> <div class="line number16 index15 alt1"> 16 </div> <div class="line number17 index16 alt2"> 17 </div> <div class="line number18 index17 alt1"> 18 </div> <div class="line number19 index18 alt2"> 19 </div> <div class="line number20 index19 alt1"> 20 </div> <div class="line number21 index20 alt2"> 21 </div> <div class="line number22 index21 alt1"> 22 </div> <div class="line number23 index22 alt2"> 23 </div> <div class="line number24 index23 alt1"> 24 </div> <div class="line number25 index24 alt2"> 25 </div> <div class="line number26 index25 alt1"> 26 </div> <div class="line number27 index26 alt2"> 27 </div> <div class="line number28 index27 alt1"> 28 </div></td> <td class="code"> <div class="container"> <div class="line number1 index0 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># vim /etc/httpd/httpd.conf</span></code> </div> <div class="line number2 index1 alt1"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;">#Include /etc/httpd/extra/mod_jk.conf #注释此行</span></code> </div> <div class="line number3 index2 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">Include </code><code class="bash plain">/etc/httpd/extra/mod_proxy</code><code class="bash plain">.conf</code></span> </div> <div class="line number4 index3 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">------------------------------------------------------------------------</span></code> </div> <div class="line number5 index4 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># vim /etc/httpd/extra/mod_proxy.conf</span></code> </div> <div class="line number6 index5 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">ProxyVia On</span></code> </div> <div class="line number7 index6 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">ProxyRequests Off</span></code> </div> <div class="line number8 index7 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">ProxyPreserveHost Off</span></code> </div> <div class="line number9 index8 alt2"> <code class="bash plain"><span style="font-family:nsimsun;"><Proxy *></span></code> </div> <div class="line number10 index9 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">Order allow,deny</span></code> </div> <div class="line number11 index10 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">Allow from all</span></code> </div> <div class="line number12 index11 alt1"> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/Proxy</code><code class="bash plain">></code></span> </div> <div class="line number13 index12 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">ProxyPass / ajp:</code><code class="bash plain">//172</code><code class="bash plain">.16.14.3:8009/</code></span> </div> <div class="line number14 index13 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">ProxyPa***everse / ajp:</code><code class="bash plain">//172</code><code class="bash plain">.16.14.3:8009/</code></span> </div> <div class="line number15 index14 alt2"> <code class="bash plain"><span style="font-family:nsimsun;"><Location / ></span></code> </div> <div class="line number16 index15 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">Order allow,deny</span></code> </div> <div class="line number17 index16 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">Allow from all</span></code> </div> <div class="line number18 index17 alt1"> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/Location</code><code class="bash plain">></code></span> </div> <div class="line number19 index18 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">----------------------------------------------------------------------</span></code> </div> <div class="line number20 index19 alt1"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># service httpd reload</span></code> </div> <div class="line number21 index20 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">======================================================================</span></code> </div> <div class="line number22 index21 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">注释：</span></code> </div> <div class="line number23 index22 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">ProxyPass / ajp:</code><code class="bash plain">//172</code><code class="bash plain">.16.14.3:8009/ </code><code class="bash comments"><span style="color:#000000;">#使用的是ajp协议</span></code></span> </div> <div class="line number24 index23 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">ProxyPa***everse / ajp:</code><code class="bash plain">//172</code><code class="bash plain">.16.14.3:8009/</code></span> </div> <div class="line number25 index24 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">可以更改为使用http协议；如下</span></code> </div> <div class="line number26 index25 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">ProxyPass / http:</code><code class="bash plain">//172</code><code class="bash plain">.16.14.3:8080/</code></span> </div> <div class="line number27 index26 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">ProxyPa***everse / http:</code><code class="bash plain">//172</code><code class="bash plain">.16.14.3:8080/</code></span> </div> <div class="line number28 index27 alt1"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;">######这里只演示使用ajp协议,如果是Apache与Tomcat结合建议使用ajp协议</span></code> </div> </div></td> </tr> </tbody> </table> </div> </div> <p><span style="font-family:'宋体', simsun;">2、访问Apache1服务器，测试是否代理成功</span><br></p> <p><a href="http://img.e-com-net.com/image/info3/b80dd84478c44c96be17f47e260f40dd.jpg" target="_blank"><img title="2013-10-01_163003.gif" alt="Apache+Tomcat构建Tomcat负载均衡集群_第9张图片" src="http://img.e-com-net.com/image/info3/b80dd84478c44c96be17f47e260f40dd.jpg" width="650" height="152" style="border:1px solid black;"></a></p> <p><span style="font-family:'宋体', simsun;">3、修改Apache配置文件(mod_proxy.conf)；</span><strong><span style="font-family:'宋体', simsun;">实现负载均衡</span></strong></p> <div> <div class="syntaxhighlighter bash ie"> <table> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> <div class="line number14 index13 alt1"> 14 </div> <div class="line number15 index14 alt2"> 15 </div> <div class="line number16 index15 alt1"> 16 </div> <div class="line number17 index16 alt2"> 17 </div> <div class="line number18 index17 alt1"> 18 </div> <div class="line number19 index18 alt2"> 19 </div> <div class="line number20 index19 alt1"> 20 </div> <div class="line number21 index20 alt2"> 21 </div> <div class="line number22 index21 alt1"> 22 </div> <div class="line number23 index22 alt2"> 23 </div> <div class="line number24 index23 alt1"> 24 </div> <div class="line number25 index24 alt2"> 25 </div> <div class="line number26 index25 alt1"> 26 </div> <div class="line number27 index26 alt2"> 27 </div> <div class="line number28 index27 alt1"> 28 </div> <div class="line number29 index28 alt2"> 29 </div> <div class="line number30 index29 alt1"> 30 </div> <div class="line number31 index30 alt2"> 31 </div> <div class="line number32 index31 alt1"> 32 </div> <div class="line number33 index32 alt2"> 33 </div> <div class="line number34 index33 alt1"> 34 </div> <div class="line number35 index34 alt2"> 35 </div> <div class="line number36 index35 alt1"> 36 </div> <div class="line number37 index36 alt2"> 37 </div> <div class="line number38 index37 alt1"> 38 </div> <div class="line number39 index38 alt2"> 39 </div> <div class="line number40 index39 alt1"> 40 </div></td> <td class="code"> <div class="container"> <div class="line number1 index0 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># vim /etc/httpd/extra/mod_proxy.conf</span></code> </div> <div class="line number2 index1 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">ProxyVia Off</span></code> </div> <div class="line number3 index2 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">ProxyRequests Off</span></code> </div> <div class="line number4 index3 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">ProxyPreserveHost Off</span></code> </div> <div class="line number5 index4 alt2"> <span style="font-family:nsimsun;"><code class="bash plain"><Proxy balancer:</code><code class="bash plain">//allen</code><code class="bash plain">></code></span> </div> <div class="line number6 index5 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">BalancerMember ajp:</code><code class="bash plain">//172</code><code class="bash plain">.16.14.3:8009 loadfactor=1</code></span> </div> <div class="line number7 index6 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">BalancerMember ajp:</code><code class="bash plain">//172</code><code class="bash plain">.16.14.4:8009 loadfactor=1</code></span> </div> <div class="line number8 index7 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">ProxySet lbmethod=bytraffic</span></code> </div> <div class="line number9 index8 alt2"> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/Proxy</code><code class="bash plain">></code></span> </div> <div class="line number10 index9 alt1"> <span style="font-family:nsimsun;"><code class="bash plain"><Location </code><code class="bash plain">/allen</code><code class="bash plain">> </code><code class="bash comments"><span style="color:#000000;">#设置状态及管理页面</span></code></span> </div> <div class="line number11 index10 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">SetHandler balancer-manager</span></code> </div> <div class="line number12 index11 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">Proxypass !</span></code> </div> <div class="line number13 index12 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">Order allow,deny</span></code> </div> <div class="line number14 index13 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">Allow from all</span></code> </div> <div class="line number15 index14 alt2"> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/Location</code><code class="bash plain">></code></span> </div> <div class="line number16 index15 alt1"> <code class="bash plain"><span style="font-family:nsimsun;"><Proxy *></span></code> </div> <div class="line number17 index16 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">Order allow,deny</span></code> </div> <div class="line number18 index17 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">Allow from all</span></code> </div> <div class="line number19 index18 alt2"> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/Proxy</code><code class="bash plain">></code></span> </div> <div class="line number20 index19 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">ProxyPass / balancer:</code><code class="bash plain">//allen/</code></span> <code class="bash plain"><span style="font-family:nsimsun;">stickysession=JSESSIONID</span></code> </div> <div class="line number21 index20 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">ProxyPa***everse / balancer:</code><code class="bash plain">//allen/</code></span> </div> <div class="line number22 index21 alt1"> <code class="bash plain"><span style="font-family:nsimsun;"><Location / ></span></code> </div> <div class="line number23 index22 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">Order allow,deny</span></code> </div> <div class="line number24 index23 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">Allow from all</span></code> </div> <div class="line number25 index24 alt2"> <span style="font-family:nsimsun;"><code class="bash plain"><</code><code class="bash plain">/Location</code><code class="bash plain">></code></span> </div> <div class="line number26 index25 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">----------------------------------------------------------------------</span></code> </div> <div class="line number27 index26 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">注释：</span></code> </div> <div class="line number28 index27 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">BalancerMember ajp:</code><code class="bash plain">//172</code><code class="bash plain">.16.14.3:8009 loadfactor=1 </code><code class="bash comments"><span style="color:#000000;">#使用ajp协议</span></code></span> </div> <div class="line number29 index28 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">BalancerMember ajp:</code><code class="bash plain">//172</code><code class="bash plain">.16.14.4:8009 loadfactor=1</code></span> </div> <div class="line number30 index29 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">可更改为使用http协议</span></code> </div> <div class="line number31 index30 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">BalancerMember http:</code><code class="bash plain">//172</code><code class="bash plain">.16.14.3:8080 loadfactor=1</code></span> </div> <div class="line number32 index31 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">BalancerMember http:</code><code class="bash plain">//172</code><code class="bash plain">.16.14.4:8080 loadfactor=1</code></span> </div> <div class="line number33 index32 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;">######这里只介绍使用ajp协议，如果有兴趣可以更改一下；loadfactor：权重</span></code> </div> <div class="line number34 index33 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">----------------------------------------------------------------------</span></code> </div> <div class="line number35 index34 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">ProxySet lbmethod=bytraffic </code><code class="bash comments"><span style="color:#000000;">#设置调度算法</span></code></span> </div> <div class="line number36 index35 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">byrequests：即基于权重将统计请求个数进行调度(默认)</span></code> </div> <div class="line number37 index36 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">bytraffic：则执行基于权重的流量计数调度</span></code> </div> <div class="line number38 index37 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">bybusyness：通过考量每个后端服务器的当前负载进行调度</span></code> </div> <div class="line number39 index38 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">----------------------------------------------------------------------</span></code> </div> <div class="line number40 index39 alt1"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># service httpd reload</span></code> </div> </div></td> </tr> </tbody> </table> </div> </div> <p><span style="font-family:'宋体', simsun;">4、访问Apache服务器，测试基于mod_proxy模块是否实现负载均衡</span></p> <p><a href="http://img.e-com-net.com/image/info3/ceb0f28f12a94681a1bc1ced7007b07e.jpg" target="_blank"><img style="float:none;;border:1px solid black;" title="2013-10-01_164655.gif" alt="Apache+Tomcat构建Tomcat负载均衡集群_第10张图片" src="http://img.e-com-net.com/image/info3/ceb0f28f12a94681a1bc1ced7007b07e.jpg" width="650" height="150"></a></p> <p><a href="http://img.e-com-net.com/image/info3/3bc409e30749427b87265290ed74dd49.jpg" target="_blank"><img style="float:none;;border:1px solid black;" title="2013-10-01_164739.gif" alt="Apache+Tomcat构建Tomcat负载均衡集群_第11张图片" src="http://img.e-com-net.com/image/info3/3bc409e30749427b87265290ed74dd49.jpg" width="650" height="149"></a></p> <p><span style="font-family:'宋体', simsun;">5、访问状态页面</span></p> <p><a href="http://img.e-com-net.com/image/info3/828f03e305ec478299b8e961f942615e.jpg" target="_blank"><img title="2013-10-01_174628.gif" alt="Apache+Tomcat构建Tomcat负载均衡集群_第12张图片" src="http://img.e-com-net.com/image/info3/828f03e305ec478299b8e961f942615e.jpg" width="650" height="307" style="border:1px solid black;"></a></p> <hr> <p><strong><span style="font-family:'宋体', simsun;font-size:18px;">六、论坛安装</span></strong></p> <p><span style="font-family:'宋体', simsun;">1、在Tomcat1服务器上安装<br></span></p> <div> <div class="syntaxhighlighter bash ie"> <table> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> <div class="line number14 index13 alt1"> 14 </div></td> <td class="code"> <div class="container"> <div class="line number1 index0 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># unzip JspRun\!_6.0.0_GBK.zip</span></code> </div> <div class="line number2 index1 alt1"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># mv /web/allen/index.jsp /web/allen/test.jsp</span></code> </div> <div class="line number3 index2 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># cp -r upload/* /web/allen/</span></code> </div> <div class="line number4 index3 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">------------------------------------------------------------------------</span></code> </div> <div class="line number5 index4 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">修改论坛数据库连接文件</span></code> </div> <div class="line number6 index5 alt1"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># vim /web/allen/config.properties</span></code> </div> <div class="line number7 index6 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">dbhost = 172.16.14.5</span></code> </div> <div class="line number8 index7 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">dbport=3306</span></code> </div> <div class="line number9 index8 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">dbuser = bbsuser</span></code> </div> <div class="line number10 index9 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">dbpw = bbspass</span></code> </div> <div class="line number11 index10 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">dbname = bbs</span></code> </div> <div class="line number12 index11 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">------------------------------------------------------------------------</span></code> </div> <div class="line number13 index12 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># catalina.sh stop</span></code> </div> <div class="line number14 index13 alt1"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># catalina.sh start</span></code> </div> </div></td> </tr> </tbody> </table> </div> </div> <p><span style="font-family:'宋体', simsun;">2、安装论坛程序<br></span></p> <p><a href="http://img.e-com-net.com/image/info3/ee6c8b12ef634aa989fa4cea79adb8ec.jpg" target="_blank"><img title="2013-10-01_181046.gif" alt="Apache+Tomcat构建Tomcat负载均衡集群_第13张图片" src="http://img.e-com-net.com/image/info3/ee6c8b12ef634aa989fa4cea79adb8ec.jpg" width="650" height="332" style="border:1px solid black;"></a></p> <p><span style="line-height:28px;background-color:#ffffff;font-family:'宋体', simsun;color:#2c2c2c;font-size:14px;"><span style="line-height:28px;background-color:#ffffff;font-family:'宋体', simsun;color:#2c2c2c;font-size:16px;">3、</span><span style="line-height:28px;background-color:#ffffff;font-family:'宋体', simsun;color:#2c2c2c;font-size:14px;">点击下一步-->我同意-->下一步，进入数据库配置页面</span></span></p> <p><a href="http://img.e-com-net.com/image/info3/558e49cc3e6344e0bd3104c84e2be2a1.gif" target="_blank"><img title="2013-10-01_181210.gif" alt="Apache+Tomcat构建Tomcat负载均衡集群_第14张图片" src="http://img.e-com-net.com/image/info3/558e49cc3e6344e0bd3104c84e2be2a1.gif" width="906" height="559" style="border:1px solid black;"></a></p> <p><span style="line-height:28px;background-color:#ffffff;margin:0px;font-family:'宋体', simsun;color:#2c2c2c;font-size:16px;padding:0px;">4、点下一步-->(填写管理员密码)下一步-->进入创建数据表阶段-->然后点</span><img style="margin:0px;vertical-align:top;padding:0px;" title="2013-09-30_103504.gif" alt="103517659.gif" src="http://img.e-com-net.com/image/info3/d8e5fc53c2154cbd824fdef383ac44c7.gif" width="236" height="22"><span style="line-height:28px;background-color:#ffffff;margin:0px;font-family:'宋体', simsun;color:#2c2c2c;font-size:16px;padding:0px;">-->进入首页</span></p> <p><a href="http://img.e-com-net.com/image/info3/1f178148cf3045ed811e1fdf8c729950.jpg" target="_blank"><img title="2013-10-01_181420.gif" alt="Apache+Tomcat构建Tomcat负载均衡集群_第15张图片" src="http://img.e-com-net.com/image/info3/1f178148cf3045ed811e1fdf8c729950.jpg" width="650" height="401" style="border:1px solid black;"></a></p> <p><span style="line-height:28px;background-color:#ffffff;font-family:'宋体', simsun;color:#2c2c2c;font-size:16px;">5、将论坛程序拷贝到Tomcat2服务器上一份并访问测试</span></p> <div> <div class="syntaxhighlighter bash ie"> <table> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div></td> <td class="code"> <div class="container"> <div class="line number1 index0 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># mv /web/allen/index.jsp /web/allen/test.jsp #把原来的测试页重命名</span></code> </div> <div class="line number2 index1 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">------------------------------------------------------------------------</span></code> </div> <div class="line number3 index2 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># scp -r 172.16.14.3:/web/allen/* /web/allen/</span></code> </div> <div class="line number4 index3 alt1"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># catalina.sh stop</span></code> </div> <div class="line number5 index4 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;"># catalina.sh start</span></code> </div> </div></td> </tr> </tbody> </table> </div> </div> <p><span style="font-family:nsimsun;color:#000000;"><a href="http://img.e-com-net.com/image/info3/54a9117fc072436486820e471b888c7f.jpg" target="_blank"><img title="2013-10-01_182238.gif" alt="Apache+Tomcat构建Tomcat负载均衡集群_第16张图片" src="http://img.e-com-net.com/image/info3/54a9117fc072436486820e471b888c7f.jpg" width="650" height="401" style="border:1px solid black;"></a></span></p> <p><span style="font-family:'宋体', simsun;">6、访问Apache服务器，测试是否能正常访问论坛程序，这里就不在做访问测试</span></p> <hr> <p><strong><span style="font-family:'宋体', simsun;font-size:18px;">七、安装并配置Keepalived</span></strong></p> <p><span style="font-family:'宋体', simsun;">1、将Apache1服务器的Httpd配置文件复制到Apache2服务器</span></p> <div> <div class="syntaxhighlighter bash ie"> <table> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div></td> <td class="code"> <div class="container"> <div class="line number1 index0 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache1 ~]</code><code class="bash comments"><span style="color:#000000;"># cd /etc/httpd/</span></code></span> </div> <div class="line number2 index1 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache1 httpd]</code><code class="bash comments"><span style="color:#000000;"># scp httpd.conf 172.16.14.2:/etc/httpd/</span></code></span> </div> <div class="line number3 index2 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache1 httpd]</code><code class="bash comments"><span style="color:#000000;"># cd extra/</span></code></span> </div> <div class="line number4 index3 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache1 extra]</code><code class="bash comments"><span style="color:#000000;"># scp mod_jk.conf mod_proxy.conf workers.properties 172.16.14.2:/etc/httpd/extra/</span></code></span> </div> </div></td> </tr> </tbody> </table> </div> </div> <p><span style="font-family:'宋体', simsun;">2、在Apache1与Apache2服务器上安装Keepalived；这里使用rpm包安装，光盘映像中有</span></p> <div> <div class="syntaxhighlighter bash ie"> <table> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div></td> <td class="code"> <div class="container"> <div class="line number1 index0 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache1 ~]</code><code class="bash comments"><span style="color:#000000;"># yum -y install keepalived</span></code></span> </div> <div class="line number2 index1 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">--------------------------------------------</span></code> </div> <div class="line number3 index2 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache2 ~]</code><code class="bash comments"><span style="color:#000000;"># yum -y install keepalived</span></code></span> </div> </div></td> </tr> </tbody> </table> </div> </div> <p><span style="font-family:'宋体', simsun;">3、配置Apache1服务器上的Keepalived</span></p> <div> <div class="syntaxhighlighter bash ie"> <table> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> <div class="line number14 index13 alt1"> 14 </div> <div class="line number15 index14 alt2"> 15 </div> <div class="line number16 index15 alt1"> 16 </div> <div class="line number17 index16 alt2"> 17 </div> <div class="line number18 index17 alt1"> 18 </div> <div class="line number19 index18 alt2"> 19 </div> <div class="line number20 index19 alt1"> 20 </div> <div class="line number21 index20 alt2"> 21 </div> <div class="line number22 index21 alt1"> 22 </div> <div class="line number23 index22 alt2"> 23 </div> <div class="line number24 index23 alt1"> 24 </div> <div class="line number25 index24 alt2"> 25 </div> <div class="line number26 index25 alt1"> 26 </div> <div class="line number27 index26 alt2"> 27 </div> <div class="line number28 index27 alt1"> 28 </div> <div class="line number29 index28 alt2"> 29 </div> <div class="line number30 index29 alt1"> 30 </div> <div class="line number31 index30 alt2"> 31 </div> <div class="line number32 index31 alt1"> 32 </div> <div class="line number33 index32 alt2"> 33 </div> <div class="line number34 index33 alt1"> 34 </div> <div class="line number35 index34 alt2"> 35 </div> <div class="line number36 index35 alt1"> 36 </div> <div class="line number37 index36 alt2"> 37 </div> <div class="line number38 index37 alt1"> 38 </div> <div class="line number39 index38 alt2"> 39 </div> <div class="line number40 index39 alt1"> 40 </div> <div class="line number41 index40 alt2"> 41 </div> <div class="line number42 index41 alt1"> 42 </div> <div class="line number43 index42 alt2"> 43 </div> <div class="line number44 index43 alt1"> 44 </div></td> <td class="code"> <div class="container"> <div class="line number1 index0 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache1 ~]</code><code class="bash comments"><span style="color:#000000;"># vim /etc/keepalived/keepalived.conf</span></code></span> </div> <div class="line number2 index1 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">! Configuration File </span></code> <span style="color:#000000;"><code class="bash keyword"><span style="font-family:nsimsun;">for</span></code><code class="bash plain"><span style="font-family:nsimsun;">keepalived</span></code></span> </div> <div class="line number3 index2 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">global_defs {</span></code> </div> <div class="line number4 index3 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">notification_email {</span></code> </div> <div class="line number5 index4 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">root@localhost</span></code> </div> <div class="line number6 index5 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">}</span></code> </div> <div class="line number7 index6 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">notification_email_from admin@allen.com</span></code> </div> <div class="line number8 index7 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">smtp_server 172.16.0.0</span></code> </div> <div class="line number9 index8 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">smtp_connect_timeout 30</span></code> </div> <div class="line number10 index9 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">router_id LVS_ALLEN</span></code> </div> <div class="line number11 index10 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">}</span></code> </div> <div class="line number12 index11 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">vrrp_script chk_httpd {</span></code> </div> <div class="line number13 index12 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">script </code><code class="bash string"><span style="color:#000000;">"killall -0 httpd"</span></code></span> </div> <div class="line number14 index13 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">interval 1</span></code> </div> <div class="line number15 index14 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">weight -2</span></code> </div> <div class="line number16 index15 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">}</span></code> </div> <div class="line number17 index16 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">vrrp_instance httpd_1 {</span></code> </div> <div class="line number18 index17 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">state MASTER</span></code> </div> <div class="line number19 index18 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">interface eth0</span></code> </div> <div class="line number20 index19 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">virtual_router_id 58</span></code> </div> <div class="line number21 index20 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">priority 100</span></code> </div> <div class="line number22 index21 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">advert_int 1</span></code> </div> <div class="line number23 index22 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">authentication {</span></code> </div> <div class="line number24 index23 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">auth_type PASS</span></code> </div> <div class="line number25 index24 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">auth_pass 1058</span></code> </div> <div class="line number26 index25 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">}</span></code> </div> <div class="line number27 index26 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">virtual_ipaddress {</span></code> </div> <div class="line number28 index27 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">172.16.14.10</span></code> </div> <div class="line number29 index28 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">}</span></code> </div> <div class="line number30 index29 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">track_script {</span></code> </div> <div class="line number31 index30 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">chk_httpd</span></code> </div> <div class="line number32 index31 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">}</span></code> </div> <div class="line number33 index32 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">}</span></code> </div> <div class="line number34 index33 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache1 ~]</code><code class="bash comments"><span style="color:#000000;"># service keepalived start</span></code></span> </div> <div class="line number35 index34 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache1 ~]</code><code class="bash comments"><span style="color:#000000;"># chkconfig keepalived on</span></code></span> </div> <div class="line number36 index35 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache1 ~]</code><code class="bash comments"><span style="color:#000000;"># chkconfig --list keepalived</span></code></span> </div> <div class="line number37 index36 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">keepalived 0:off 1:off 2:on 3:on 4:on 5:on 6:off</span></code> </div> <div class="line number38 index37 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache1 ~]</code><code class="bash comments"><span style="color:#000000;"># ip addr show eth0</span></code></span> </div> <div class="line number39 index38 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000</span></code> </div> <div class="line number40 index39 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">link</code><code class="bash plain">/ether</code></span> <code class="bash plain"><span style="font-family:nsimsun;">00:0c:29:2c:1a:24 brd ff:ff:ff:ff:ff:ff</span></code> </div> <div class="line number41 index40 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">inet 172.16.14.1</code><code class="bash plain">/16</code></span> <code class="bash plain"><span style="font-family:nsimsun;">brd 172.16.255.255 scope global eth0</span></code> </div> <div class="line number42 index41 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">inet 172.16.14.10</code><code class="bash plain">/32</code></span> <code class="bash plain"><span style="font-family:nsimsun;">scope global eth0</span></code> </div> <div class="line number43 index42 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">inet6 fe80::20c:29ff:fe2c:1a24</code><code class="bash plain">/64</code></span> <code class="bash plain"><span style="font-family:nsimsun;">scope link</span></code> </div> <div class="line number44 index43 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">valid_lft forever preferred_lft forever</span></code> </div> </div></td> </tr> </tbody> </table> </div> </div> <p><span style="font-family:'宋体', simsun;">4、配置Apache2服务器上的Keepalived</span></p> <div> <div class="syntaxhighlighter bash ie"> <table> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> <div class="line number14 index13 alt1"> 14 </div> <div class="line number15 index14 alt2"> 15 </div> <div class="line number16 index15 alt1"> 16 </div> <div class="line number17 index16 alt2"> 17 </div> <div class="line number18 index17 alt1"> 18 </div> <div class="line number19 index18 alt2"> 19 </div> <div class="line number20 index19 alt1"> 20 </div> <div class="line number21 index20 alt2"> 21 </div> <div class="line number22 index21 alt1"> 22 </div> <div class="line number23 index22 alt2"> 23 </div> <div class="line number24 index23 alt1"> 24 </div> <div class="line number25 index24 alt2"> 25 </div> <div class="line number26 index25 alt1"> 26 </div> <div class="line number27 index26 alt2"> 27 </div> <div class="line number28 index27 alt1"> 28 </div> <div class="line number29 index28 alt2"> 29 </div> <div class="line number30 index29 alt1"> 30 </div> <div class="line number31 index30 alt2"> 31 </div> <div class="line number32 index31 alt1"> 32 </div> <div class="line number33 index32 alt2"> 33 </div> <div class="line number34 index33 alt1"> 34 </div> <div class="line number35 index34 alt2"> 35 </div> <div class="line number36 index35 alt1"> 36 </div></td> <td class="code"> <div class="container"> <div class="line number1 index0 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache2 ~]</code><code class="bash comments"><span style="color:#000000;"># vim /etc/keepalived/keepalived.conf</span></code></span> </div> <div class="line number2 index1 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">! Configuration File </span></code> <span style="color:#000000;"><code class="bash keyword"><span style="font-family:nsimsun;">for</span></code><code class="bash plain"><span style="font-family:nsimsun;">keepalived</span></code></span> </div> <div class="line number3 index2 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">global_defs {</span></code> </div> <div class="line number4 index3 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">notification_email {</span></code> </div> <div class="line number5 index4 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">root@localhost</span></code> </div> <div class="line number6 index5 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">}</span></code> </div> <div class="line number7 index6 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">notification_email_from admin@allen.com</span></code> </div> <div class="line number8 index7 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">smtp_server 172.16.0.0</span></code> </div> <div class="line number9 index8 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">smtp_connect_timeout 30</span></code> </div> <div class="line number10 index9 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">router_id LVS_ALLEN</span></code> </div> <div class="line number11 index10 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">}</span></code> </div> <div class="line number12 index11 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">vrrp_script chk_httpd {</span></code> </div> <div class="line number13 index12 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">script </code><code class="bash string"><span style="color:#000000;">"killall -0 httpd"</span></code></span> </div> <div class="line number14 index13 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">interval 1</span></code> </div> <div class="line number15 index14 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">weight -2</span></code> </div> <div class="line number16 index15 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">}</span></code> </div> <div class="line number17 index16 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">vrrp_instance httpd_1 {</span></code> </div> <div class="line number18 index17 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">state BACKUP</span></code> </div> <div class="line number19 index18 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">interface eth0</span></code> </div> <div class="line number20 index19 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">virtual_router_id 58</span></code> </div> <div class="line number21 index20 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">priority 99</span></code> </div> <div class="line number22 index21 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">advert_int 1</span></code> </div> <div class="line number23 index22 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">authentication {</span></code> </div> <div class="line number24 index23 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">auth_type PASS</span></code> </div> <div class="line number25 index24 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">auth_pass 1058</span></code> </div> <div class="line number26 index25 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">}</span></code> </div> <div class="line number27 index26 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">virtual_ipaddress {</span></code> </div> <div class="line number28 index27 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">172.16.14.10</span></code> </div> <div class="line number29 index28 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">}</span></code> </div> <div class="line number30 index29 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">track_script {</span></code> </div> <div class="line number31 index30 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">chk_httpd</span></code> </div> <div class="line number32 index31 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">}</span></code> </div> <div class="line number33 index32 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">}</span></code> </div> <div class="line number34 index33 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache2 ~]</code><code class="bash comments"><span style="color:#000000;"># service keepalived start</span></code></span> </div> <div class="line number35 index34 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache2 ~]</code><code class="bash comments"><span style="color:#000000;"># chkconfig --list keepalived</span></code></span> </div> <div class="line number36 index35 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">keepalived 0:off 1:off 2:on 3:on 4:on 5:on 6:off</span></code> </div> </div></td> </tr> </tbody> </table> </div> </div> <p><span style="font-family:'宋体', simsun;">5、使用"www.allen.com" 域名访问，验证是否能访问到论坛；由于没有DNS服务器解析，修改了"hosts"文件；如：</span></p> <div> <div class="syntaxhighlighter bash ie"> <table> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div></td> <td class="code"> <div class="container"> <div class="line number1 index0 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;">######添加如下内容解析</span></code> </div> <div class="line number2 index1 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">C:\Windows\System32\drivers\etc\hosts</span></code> </div> <div class="line number3 index2 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">172.16.14.10 www.allen.com</span></code> </div> </div></td> </tr> </tbody> </table> </div> </div> <p><span style="font-family:nsimsun;"><a href="http://img.e-com-net.com/image/info3/50236c618a4e4912a75388a55fd8b028.jpg" target="_blank"><img title="2013-10-01_193941.gif" alt="Apache+Tomcat构建Tomcat负载均衡集群_第17张图片" src="http://img.e-com-net.com/image/info3/50236c618a4e4912a75388a55fd8b028.jpg" width="650" height="401" style="border:1px solid black;"></a></span></p> <p><span style="font-family:'宋体', simsun;">6、模拟前端一台服务器出现故障；查看虚拟IP是否转移</span></p> <div> <div class="syntaxhighlighter bash ie"> <table> <tbody> <tr> <td class="gutter"> <div class="line number1 index0 alt2"> 1 </div> <div class="line number2 index1 alt1"> 2 </div> <div class="line number3 index2 alt2"> 3 </div> <div class="line number4 index3 alt1"> 4 </div> <div class="line number5 index4 alt2"> 5 </div> <div class="line number6 index5 alt1"> 6 </div> <div class="line number7 index6 alt2"> 7 </div> <div class="line number8 index7 alt1"> 8 </div> <div class="line number9 index8 alt2"> 9 </div> <div class="line number10 index9 alt1"> 10 </div> <div class="line number11 index10 alt2"> 11 </div> <div class="line number12 index11 alt1"> 12 </div> <div class="line number13 index12 alt2"> 13 </div> <div class="line number14 index13 alt1"> 14 </div> <div class="line number15 index14 alt2"> 15 </div> <div class="line number16 index15 alt1"> 16 </div> <div class="line number17 index16 alt2"> 17 </div></td> <td class="code"> <div class="container"> <div class="line number1 index0 alt2"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;">######停止Apache1服务器上的Httpd服务来模拟故障；并查看IP</span></code> </div> <div class="line number2 index1 alt1"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache1 ~]</code><code class="bash comments"><span style="color:#000000;"># service httpd stop</span></code></span> </div> <div class="line number3 index2 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache1 ~]</code><code class="bash comments"><span style="color:#000000;"># ip addr show eth0</span></code></span> </div> <div class="line number4 index3 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000</span></code> </div> <div class="line number5 index4 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">link</code><code class="bash plain">/ether</code></span> <code class="bash plain"><span style="font-family:nsimsun;">00:0c:29:2c:1a:24 brd ff:ff:ff:ff:ff:ff</span></code> </div> <div class="line number6 index5 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">inet 172.16.14.1</code><code class="bash plain">/16</code></span> <code class="bash plain"><span style="font-family:nsimsun;">brd 172.16.255.255 scope global eth0</span></code> </div> <div class="line number7 index6 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">inet6 fe80::20c:29ff:fe2c:1a24</code><code class="bash plain">/64</code></span> <code class="bash plain"><span style="font-family:nsimsun;">scope link</span></code> </div> <div class="line number8 index7 alt1"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">valid_lft forever preferred_lft forever</span></code> </div> <div class="line number9 index8 alt2"> <code class="bash plain"><span style="font-family:nsimsun;">========================================================================</span></code> </div> <div class="line number10 index9 alt1"> <code class="bash comments"><span style="font-family:nsimsun;color:#000000;">######查看Apache2服务器上的IP</span></code> </div> <div class="line number11 index10 alt2"> <span style="font-family:nsimsun;"><code class="bash plain">[root@Apache2 ~]</code><code class="bash comments"><span style="color:#000000;"># ip addr show eth0</span></code></span> </div> <div class="line number12 index11 alt1"> <code class="bash plain"><span style="font-family:nsimsun;">2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000</span></code> </div> <div class="line number13 index12 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">link</code><code class="bash plain">/ether</code></span> <code class="bash plain"><span style="font-family:nsimsun;">00:0c:29:ec:f6:3f brd ff:ff:ff:ff:ff:ff</span></code> </div> <div class="line number14 index13 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">inet 172.16.14.2</code><code class="bash plain">/16</code></span> <code class="bash plain"><span style="font-family:nsimsun;">brd 172.16.255.255 scope global eth0</span></code> </div> <div class="line number15 index14 alt2"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">inet 172.16.14.10</code><code class="bash plain">/32</code></span> <code class="bash plain"><span style="font-family:nsimsun;">scope global eth0</span></code> </div> <div class="line number16 index15 alt1"> <code class="bash spaces"></code> <span style="font-family:nsimsun;"><code class="bash plain">inet6 fe80::20c:29ff:feec:f63f</code><code class="bash plain">/64</code></span> <code class="bash plain"><span style="font-family:nsimsun;">scope link</span></code> </div> <div class="line number17 index16 alt2"> <code class="bash spaces"></code> <code class="bash plain"><span style="font-family:nsimsun;">valid_lft forever preferred_lft forever</span></code> </div> </div></td> </tr> </tbody> </table> </div> </div> <p><span style="font-family:'宋体', simsun;">7、从上一步可以看出，虚拟IP地址已成功转移，说明还能正常提供服务，可以再次访问测试；如果服务器修复好重新上线，虚拟IP还会转移回去；这里就不再测试</span></p> <p><br></p> <p><strong><span style="color:#ff0000;font-size:20px;">到此，基于Apache做反向代理实现了Tomcat的负载均衡；而Keepalived实现了前端服务器的高可用；关于session保存的问题，方案有很多，比如可以保存到"memcached"、"redis"等，使用哪种方案具体还要根据自己的需求而定...</span></strong></p> <p>本文出自 “ALLEN” 博客，谢绝转载！</p> <p> </p> </div> </div> </div> </div> </div> <!--PC和WAP自适应版--> <div id="SOHUCS" sid="1206879677730361344"></div> <script type="text/javascript" src="/views/front/js/chanyan.js"></script> <!-- 文章页-底部 动态广告位 --> <div class="youdao-fixed-ad" id="detail_ad_bottom"></div> </div> <div class="col-md-3"> <div class="row" id="ad"> <!-- 文章页-右侧1 动态广告位 --> <div id="right-1" class="col-lg-12 col-md-12 col-sm-4 col-xs-4 ad"> <div class="youdao-fixed-ad" id="detail_ad_1"> </div> </div> <!-- 文章页-右侧2 动态广告位 --> <div id="right-2" class="col-lg-12 col-md-12 col-sm-4 col-xs-4 ad"> <div 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