apache+tomcat做会话保持的负载均衡配置

2007-09-24 17:08:24

　标签：负载均衡 session apache+tomcat　　　[推送到技术圈]

1.环境:
一台服务器装apache,作负载均衡器
地址100.100.11.110
操作系统:windows2003
另外两台服务器装tomcat,作站点1和站点2
地址为:100.100.10.22 100.100.10.23
操作系统:window2003

2.安装软件:

apache_2.2.4
apache-tomcat-6.0.14
mod_jk-apache-2.2.4.so
jdk-1_5_0_06

3.配置:

3.1 apache服务器:

在100.100.11.110上安装jdk,配置环境变量,执行java -version查看是否正常
在100.100.11.110上安装apache

把mod_jk-apache-2.2.4.so拷贝到/modules下
编辑httpd.conf,在最后添加:Include conf/mod_jk.conf
在conf目录下新建一个mod_jk.conf文件,内容如下:
# Load mod_jk module
LoadModule jk_module modules/mod_jk-apache-2.2.4.so

# Where to find workers.properties
JkWorkersFile conf/workers.properties

# Where to put jk logs
JkLogFile logs/mod_jk.log

# Set the jk log level [debug/error/info]
JkLogLevel info

# Select the log format
JkLogStampFormat "[%a %b %d %H:%M:%S %Y] "

# JkOptions indicate to send SSL KEY SIZE,
JkOptions +ForwardKeySize +ForwardURICompat -ForwardDirectories

# JkRequestLogFormat set the request format
JkRequestLogFormat "%w %V %T"

# Send JSPs for context / to worker named loadBalancer
JkMount /*.jsp loadBalancer

在conf目录里新建一个名称为workers.properties的文件,内容如下:

worker.list=loadBalancer,tomcat1,tomcat2
worker.tomcat1.port=8009
worker.tomcat1.host=100.100.10.22
worker.tomcat1.type=ajp13
worker.tomcat1.lbfactor=1
#worker.tomcat1.cachesize=60
#worker.tomcat1.cache_timeout=300
worker.tomcat1.socket_keepalive=1
worker.tomcat1.socket_timeout=180
worker.tomcat1.connect_timeout=0
worker.tomcat1.reply_timeout=0
worker.tomcat1.recovery_options=1
worker.tomcat1.retries=1

worker.tomcat2.port=8009
worker.tomcat2.host=100.100.10.23
worker.tomcat2.type=ajp13
worker.tomcat2.lbfactor=1
#worker.tomcat2.cachesize=60
#worker.tomcat2.cache_timeout=300
worker.tomcat2.socket_keepalive=1
worker.tomcat2.socket_timeout=180
worker.tomcat2.connect_timeout=0
worker.tomcat2.reply_timeout=0
worker.tomcat2.recovery_options=1
worker.tomcat2.retries=1

worker.loadBalancer.type=lb
worker.loadBalancer.balance_workers=tomcat1,tomcat2
#worker.loadbalancer.method=Session
worker.loadBalancer.sticky_session=1
#worker.loadBalancer.sticky_session_force=1

3.2 配置tomcat服务器:

在两台服务器上安装jdk,设置环境变量,测试
在两台服务器上安装tomcat

编辑server.xml

在其中一台上作如下更改:

用<Engine jvmRoute="tomcat1" name="Catalina" defaultHost="localhost" debug="0">
替换<Engine name="Catalina" defaultHost="localhost">

在另一台上用tomcat2

4.增加测试程序：

在tomcat1的\webapps\ROOT里增加index.jsp
内容为：
<html>
<body bgcolor=red>
<center>

<h1>Tomcat 1</h1>
</body>
</html>

在tomcat2的\webapps\ROOT里增加index.jsp
<html>
<body bgcolor=blue>
<center>

<h1>Tomcat 2</h1>
</body>
</html>

5.测试：