tomcat垂直集群例子

wuaji · 发表于 2017-1-19 07:52:38

tomcat vertical clustering
http://www.easywayserver.com/implementation-tomcat-clustering.htm

ENV: tomcat 6.0 httpd 2.2 os winxp sp3
1 copy extracted tomcat to tomcatA
  change the sever.xml as below
<Server port="8105" shutdown="SHUTDOWN">
<Connector port="8081" protocol="HTTP/1.1"
            connectionTimeout="20000"
            redirectPort="8443" />

<Connector port="8109" protocol="AJP/1.3" redirectPort="8443" />
Add jvmRoute
<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcatA">
Uncommented clustering tag
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
2 copy extracted tomcat to tomcatB
change the sever.xml as below
<Server port="8205" shutdown="SHUTDOWN">
<Connector port="8082" protocol="HTTP/1.1"
            connectionTimeout="20000"
            redirectPort="8443" />

<Connector port="8209" protocol="AJP/1.3" redirectPort="8443" />
Add jvmRoute
<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcatB">
Uncommented clustering tag
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
3 copy extracted tomcat to tomcatC
change the sever.xml as below
<Server port="8305" shutdown="SHUTDOWN">
<Connector port="8083" protocol="HTTP/1.1"
            connectionTimeout="20000"
            redirectPort="8443" />

<Connector port="8309" protocol="AJP/1.3" redirectPort="8443" />
Add jvmRoute
<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcatC">
Uncommented clustering tag
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
4  add the mod_jk for apache httpd server, change the httpd.conf
LoadModule jk_module modules/mod_jk.so
JkWorkersFile "C:\Program Files\Apache Software Foundation\Apache2.2\conf\workers.tomcat.vertical.cluster.properties"
JkLogFile "C:\Program Files\Apache Software Foundation\Apache2.2  \logs\mod_jk.log"
JkLogLevel error
JkMount /cluster loadbalancer
JkMount /cluster/* loadbalancer
5 create workers.tomcat.vertical.cluster.properties as below
workers.java_home=$JAVA_HOME
ps=/
worker.list=tomcatA,tomcatB,tomcatC,loadbalancer

worker.tomcatA.port=8109
worker.tomcatA.host=localhost
worker.tomcatA.type=ajp13
worker.tomcatA.lbfactor=1

worker.tomcatB.port=8209
worker.tomcatB.host=localhost
worker.tomcatB.type=ajp13
worker.tomcatB.lbfactor=1

worker.tomcatC.port=8309
worker.tomcatC.host=localhost
worker.tomcatC.type=ajp13
worker.tomcatC.lbfactor=1

worker.loadbalancer.type=lb
worker.loadbalancer.balanced_workers=tomcatA,tomcatB,tomcatC
worker.loadbalancer.sticky_session=1
6 create cluster application in 3 tomcat servers in webapps, create the file test.jsp. Below is an example, please create them for each
  <%
  session.setAttribute("a","a");
%>
<html>
<head>
<title>Test JSP</title>
</head>

<body>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
  <tr bgcolor="#CCCCCC">
<td width="13%">TomcatA Machine</td>
<td width="87%"> </td>
  </tr>
  <tr>
<td>Session ID :</td>
<td><%=session.getId()%></td>
  </tr>
</table>
7 open your IE and write the url: http://localhost/cluster/test.jsp
  close your IE and do it again.
  Close your IE and do it again.
That's all.
</body>
</html>

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