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  • tomcat apache 实现负载平衡的小demo

      软件:1个apache,2个tomcat

       module包:mod_jk.so(下载地址:http://tomcat.apache.org/download-connectors.cgi)

      

    下载文件解压即可得到mod_jk.so 并放置到apache/module下

        apache/conf/http.cnf

    LoadModule jk_module modules/mod_jk.so
    JkWorkersFile conf/workers.properties
    JkLogFile logs/mod_jk.log
    JkLogLevel debug
    JkMount /*.jsp loadbalancer 
    #JkMount /j2eeTest/* loadbalancer

        conf文件夹下新加workers.properties文件

    worker.list = worker1,worker2,loadbalancer
    worker.worker1.port = 8109
    worker.worker1.host = localhost
    worker.worker1.type = ajp13
    worker.worker1.lbfactor = 300
    
    worker.worker2.port = 8009
    worker.worker2.host = localhost
    worker.worker2.type = ajp13
    worker.worker2.lbfactor = 100
    
    worker.loadbalancer.type = lb
    worker.loadbalancer.balanced_workers = worker1,worker2
    worker.loadbalancer.sticky_session=false
    worker.loadbalancer.sticky_session_force = false

         由于本地测试,tomcat端口不能重复 一个tomcat的8080改成别的

    端口有改动的主要文件配置conf/server.xml(80相关端口号全部改成81)

    <Server port="8105" shutdown="SHUTDOWN">
    <Connector port="8180" protocol="HTTP/1.1" 
                   connectionTimeout="20000" 
                   redirectPort="8443" />
    <Connector port="8109" protocol="AJP/1.3" redirectPort="8443" />
    <Engine name="Catalina" defaultHost="localhost" jvmRoute="worker1">

    端口不需要改动的(80)conf/server.xml

    <Server port="8005" shutdown="SHUTDOWN">
    <Connector port="8080" protocol="HTTP/1.1" 
                   connectionTimeout="20000" 
                   redirectPort="8443" />
    <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
    <Engine name="Catalina" defaultHost="localhost" jvmRoute="worker2">

    测试:新建一个web项目

      j2eeTest 测试jsp

    <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
        pageEncoding="ISO-8859-1"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
    <% System.out.println("1111");%>
    <title>Insert title here</title>
    </head>
    <body>
        <b>Hello : <%=request.getAttribute("User") %></b>
    </body>
    </html>

      连续刷新12次,查看输出结果为3:1

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  • 原文地址:https://www.cnblogs.com/xiaoyezi/p/4253647.html
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