Apache2.4+tomcat7集群

最新推荐文章于 2020-06-03 17:25:05 发布

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最新推荐文章于 2020-06-03 17:25:05 发布

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分类专栏：技术文章标签： apache2.4 tomcat7 集群 web

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windows7 X64位 + Apache HTTP server2.4_X64 +Tomcat7_X64 +mod_jk_2.0.46.so

所需软件请点击进行下载：

点击打开链接

1．安装之后界面如图1所示

2.1配置mod_jk.so

mod_jk.so拷到E:\Program Files\Apache Software Foundation\Apache2.4\modules目录下面。

修改apache配置文件http.conf

在apache安装目录下conf目录中找到http.conf，更改 ServerName 127.0.0.1:80

并且在文件最后加上下面一句话就可以了。

 include conf/mod_jk.conf

2.2 配置mod_jk.conf

http.conf 同目录下，创建 mod_jk.conf 文件，内容如下：

#加载 mod_jk.so 模块
LoadModule jk_module modules/mod_jk.so
#加载mod_jk.so 配置文件
JkWorkersFile conf/workers.properties
#指定那些请求交给tomcat处理,"controller"为在workers.propertise里指定的负载分配控制器 （ 比如制定 jsp 文件：JkMount /*.jspcontroller ）
JkMount /* controller

2.3 配置workers.properties

http.conf 同目录下，创建workers.properties文件 ,内容如下:

#===server 列表
worker.list = controller,tomcat1,tomcat2
#========tomcat1 需要注意此名字对应tomcat中server.xml <Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat1"> ========
#==ajp13端口号，在tomcat下server.xml配置,默认8009
worker.tomcat1.port=8009
worker.tomcat1.host=localhost
worker.tomcat1.type=ajp13
#server的加权比重，值越高，分得的请求越多
worker.tomcat1.lbfactor=1
 
#========tomcat2========
worker.tomcat2.port=8209
worker.tomcat2.host=localhost
worker.tomcat2.type=ajp13
worker.tomcat2.lbfactor=1
 
#========controller========
worker.controller.type=lb
#指定分担请求的tomcat
worker.controller.balance_workers=tomcat1,tomcat2
worker.controller.sticky_session=1

3.修改tomcat配置文件server.xml

3.1打开tomcat1/conf/server.xml文件

<Server port="8005" shutdown="SHUTDOWN">
  <Connector port="8081" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />
    <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat1">

3.2打开tomcat2/conf/server.xml文件

<Server port="8205" shutdown="SHUTDOWN">
<Connector port="8082" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8444" />
<Connector port="8209" protocol="AJP/1.3" redirectPort="8444" />
  <Engine name="Catalina" defaultHost="localhost" jvmRoute="tomact2">

3.3建立测试

建立一个目录test，里面新建一个test.jsp,内容为:

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<%@page import="java.util.*"%>


<html>

  <head>

    <title>cluster test - share session</title>

 <meta http-equiv="pragma" content="no-cache">

 <meta http-equiv="cache-control" content="no-cache">

  </head>

  <body>

 <%  

 String sessionid = session.getId();

System.out.println("当前sessionid = " + sessionid);

// 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.println("<b>Session 列表</b><br>");

 System.out.println("============================");

 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="test.jsp" id="form_add" method="post">

  Key：<input id="dataName" name="dataName" type="text"/>

  Value：<input id="dataValue" name="dataValue" type="text"/>

     <input id="subBtn" name="subBtn" type="submit" value="提交" />

 </form>

  </body>

</html>

把目录 test放到tomcat1,tomcat2的webapps下

启动apache,tomcat1,tomcat2,进行测试 http://localhost/test/test.jsp 访问，多刷新几次页面，查看Tomcat1和Tomcat2的窗口，你将可以看到打印了一行行"=========================== 94CEFC2684DFABF2BB3960CE7AA87367"，并且从统计上来说，大约在tomcat2打印的数量是在Tomcat1中的两倍，并且每个控制窗口打出的session并不一致。可以看到请求会被tomcat1,tomcat2按照不同的权重分流处理,实现了负载均衡。

4.软件配置-配置集群，SESSION复制

修改tomcat1, tomcat2的server.xml,将集群部分配置:

有关详细配置，请参考：http://localhost:8081/docs/cluster-howto.html

<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=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;"/>
          <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>

在 test目录下新建WEB-INF目录，WEB-INF下新建web.xml,内容如下

<web-appxmlns="http://java.sun.com/xml/ns/j2ee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/j2eehttp://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"version="2.4">
      <display-name>test</display-name>
   <distributable />
</web-app>