Apache2.4+tomcat7集群
windows7 X64位 + Apache HTTP server2.4_X64 +Tomcat7_X64 +mod_jk_2.0.46.so
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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 FilesApache Software FoundationApache2.4modules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>
5.通过Apache访问应用：
http://localhost/test/test.jsp
声明：该文观点仅代表作者本人，牛骨文系教育信息发布平台，牛骨文仅提供信息存储空间服务。
