Apache,Tomcat负载均衡和集群
<Connector port="9080" protocol="HTTP/1.1"
?????????????? connectionTimeout="20000"
?????????????? redirectPort="8443" />???? 改为9080
?<Connector port="9009" protocol="AJP/1.3" redirectPort="8443" />改为9009
?
6.编写test.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="java.lang.String"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
System.out.println("=basePath is:="+basePath+"=end=");
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
? <head>???
??? <title>test</title>
?<meta http-equiv="pragma" content="no-cache">
?<meta http-equiv="cache-control" content="no-cache">
?<meta http-equiv="expires" content="0">???
?<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
?<meta http-equiv="description" content="This is my page">
?<script language="javascript">
?</script>
? </head>?
? <body>
? <%
?? System.out.println("===========================");
? %>
? </body>
</html>
?
7.在apache-tomcat-1\webapps目录下创建test目录并将test.jsp放入
在apache-tomcat-2\webapps目录下创建test目录并将test.jsp放入
?
8.将mod_jk-1.2.31-httpd-2.2.3.so复制到
D:\Program Files\Apache Software Foundation\Apache2.2\modules目录下
?
9.启动apache,tomcat1,tomcat2,进行测试
http://localhost/test/test.jsp
控制台上可以看到===========================
配置集群
?????? 其中任何一个tomcat的添加的session，是要同步复制到其它tomcat， 集群内的tomcat都有相同的session
?
1.修改tomcat1, tomcat2的server.xml
?<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>? 启用
?<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat1"> 启用
?<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat2"> 启用
?
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
???????????????? channelSendOptions="8">
????????? <Manager className="org.apache.catalina.ha.session.DeltaManager"
?????????????????? expireSessionsOnShutdown="false"
?????????????????? notifyListenersOnReplication="true"/>
????????? <Channel className="org.apache.catalina.tribes.group.GroupChannel">
??????????? <Membership className="org.apache.catalina.tribes.membership.McastService"
??????????????????????? address="228.0.0.4"
??????????????????????? port="45564"
??????????????????????? frequency="500"
??????????????????????? dropTime="3000"/>
??????????? <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
????????????????????? address="auto"
????????????????????? port="4000"
????????????????????? autoBind="100"
????????????????????? selectorTimeout="5000"
????????????????????? maxThreads="6"/>
??????????? <Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
????????????? <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>
??????????? </Sender>
??????????? <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
??????????? <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>
????????? </Channel>
????????? <Valve className="org.apache.catalina.ha.tcp.ReplicationValve"
???????????????? filter=""/>
????????? <Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>
????????? <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer"
??????????????????? tempDir="/tmp/war-temp/"
??????????????????? deployDir="/tmp/war-deploy/"
??????????????????? watchDir="/tmp/war-listen/"
??????????????????? watchEnabled="false"/>
????????? <ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>
????????? <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/>
????? </Cluster>
?
2.编写index.jsp
?<%@ page contentType="text/html; charset=GBK" %>
<%@ page import="java.util.*" %>
<html><head><title>Cluster App Test</title></head>
<body>
Server Info:
<%
out.println(request.getLocalAddr() + " : " + request.getLocalPort()+"<br>");%>
<%
? out.println("<br> ID " + session.getId()+"<br>");? // 如果有新的 Session 属性设置
? String dataName = request.getParameter("dataName");
? if (dataName != null && dataName.length() > 0) {
???? String dataValue = request.getParameter("dataValue");
???? session.setAttribute(dataName, dataValue);
? }? out.print("<b>Session list</b>");? Enumeration e = session.getAttributeNames();
? while (e.hasMoreElements()) {
???? String name = (String)e.nextElement();
???? String value = session.getAttribute(name).toString();
???? out.println( name + " = " + value+"<br>");
???????? System.out.println( name + " = " + value);
?? }
%>
? <form action="index.jsp" method="POST">
??? key:<input type=text size=20 name="dataName">
???? <br>
??? value:<input type=text size=20 name="dataValue">
???? <br>
??? <input type=submit>
?? </form>
</body>
?
3.将index.jsp文件放入\webapps\test目录下（两个tomcat）
4.新建WEB-INF目录及web.xml文件
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">
?????? <display-name>TomcatDemo</display-name>
?????? <distributable/>
</web-app>
注意：在web.xml加入? <distributable/>
?
5.重启apache,tomcat1,tomcat2
http://localhost/test/index.jsp
?
?
Done!
?
各软件、配置文件及test目录见附件
mod_jk-1.2.31-httpd-2.2.3.rar (95.8 KB)下载次数: 6httpd-2.2.19-win32-x86-no_ssl.rar (4.3 MB)下载次数: 3apache-tomcat-6.0.24-windows-x86.zip (6.6 MB)下载次数: 3conf.rar (6.6 KB)下载次数: 2test.rar (1.4 KB)下载次数: 3