参照:
http://www.360doc.com/showWeb/0/0/207707.aspx环境:
Tomcat 5.5.20
Apache 2.2.3
1.机器A 里有TomcatA\webapps\Test目录, 机器B里TomcatB\webapps\Test目录。其web.xml文件一样,两个都在</web-app>之前加上<distributable/>
2.两个Tomcat\conf\server.xml的如下内容去掉注释,没有就在</Host>之前加上去:
<Cluster className="org.apache.catalina.cluster.tcp.SimpleTcpCluster"
managerClassName="org.apache.catalina.cluster.session.DeltaManager"
expireSessionsOnShutdown="false"
useDirtyFlag="true"
notifyListenersOnReplication="true">
<Membership
className="org.apache.catalina.cluster.mcast.McastService"
mcastAddr="228.0.0.4"
mcastPort="45564"
mcastFrequency="500"
mcastDropTime="3000"/>
<Receiver
className="org.apache.catalina.cluster.tcp.ReplicationListener"
tcpListenAddress="auto"
tcpListenPort="4001"
tcpSelectorTimeout="100"
tcpThreadCount="6"/>
<Sender
className="org.apache.catalina.cluster.tcp.ReplicationTransmitter"
replicationMode="pooled"
ackTimeout="15000"
waitForAck="true"/>
<Valve className="org.apache.catalina.cluster.tcp.ReplicationValve"
filter=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;"/>
<Deployer className="org.apache.catalina.cluster.deploy.FarmWarDeployer"
tempDir="/tmp/war-temp/"
deployDir="/tmp/war-deploy/"
watchDir="/tmp/war-listen/"
watchEnabled="false"/>
<ClusterListener className="org.apache.catalina.cluster.session.ClusterSessionListener"/>
</Cluster>
3.接下来配置Apache\conf\httpd.conf
其中这三个去掉注释:
LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
LoadModule proxy_http_module modules/mod_proxy_http.so
末尾加上:
ProxyRequests Off
ProxyPass /helloworld balancer://mycluster stickysession=jsessionid nofailover=On
<Proxy balancer://mycluster>
BalancerMember http://192.168.0.100:8080
BalancerMember http://192.168.0.101:8080
</Proxy>
<Location /balancer-manager>
SetHandler balancer-manager
Order Deny,Allow
Deny from all
Allow from all
</Location>
<Location /server-status>
SetHandler server-status
Order Deny,Allow
Deny from all
Allow from all
</Location>
说明:
ProxyPass /helloworld balancer://mycluster stickysession=jsessionid nofailover=On
<Proxy balancer://mycluster>
BalancerMember http://192.168.0.100:8080
BalancerMember http://192.168.0.101:8080
</Proxy>
ProxyPass为代理转发的Url,即将所有访问/helloworld的请求转发到群集balancer://mycluster
BalancerMember为群集的成员,即群集服务器A或B,负载均衡服务器会根据均衡规则来将请求转发给BalancerMember。
4.测试页面,
TomcatA\webapps\Test\index.html内容如下:
<html>
<head><title>Tomcat 5.5.20 群集1</title></head>
<body>
<center>Tomcat 1号机
</center>
</body>
</html>
TomcatB\webapps\Test\index.html内容如下:
<html>
<head><title>Tomcat 5.5.20 群集2</title></head>
<body>
<center>Tomcat 2号机在TomcatB机上
</center>
</body>
</html>
启动TomcatA和TomcatB,再启动Apache
http://localhost/helloworld/Test/index.html
后有出现上面两个页面的任一个说明配置成功。
不断刷新,这个页面不断交替。
:)
posted on 2007-03-15 16:59
流浪汗 阅读(1567)
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