Apache与JBoss AS 5 HTTP集群配置
所需组件
- Apache 2.2.22
- mod_jk 1.2.3
- JBOSS 5.1.0GA
安装步骤
- 安装
Apache2.2.22
- 将
mod_jk-1.2.30-httpd-2.2.3.so
重命名为mod_jk.so
,复制到%APACH_HOME%/modules
- 解压缩
jboss 5.1.0.GA
配置
在%APACHE_HOME%\conf\http.conf
文件中添加如下内容:
LoadModule jk_module modules/mod_jk.so
# Where to find workers.properties
JkWorkersFile conf/workers.properties
# where to find the log file
JkLogFile logs/mod_jk.log
# set the log level set the log level
JkLogLevel info
# map to the status server
JkMount /private/admin/mystatus mystatus
# router the request to the right host
JkMount /* balance
然后再%APACHE_HOME%\conf\
下新建workers.properties
文件,并添加如下内容:
# define list of workers that will be used
# for mapping requests
worker.list=balance,mystatus
# Define Node1
worker.node1.port=8009
worker.node1.host=xxx.xxx.xxx.xxx
worker.node1.type=ajp13
worker.node1.lbfactor=1
worker.node1.socket_timeout=30
worker.node1.socket_keepalive=1
# Define Node2
worker.node2.port=8009
worker.node2.host=yyy.yyy.yyy.yyy
worker.node2.type=ajp13
worker.node2.lbfactor=1
worker.node2.socket_timeout=30
worker.node2.socket_keepalive=1
# Load-balancing behaviour
worker.balance.type=lb
worker.balance.balance_workers=node1,node2
worker.balance.sticky_session=1
# Status worker for managing load balancer
worker.mystatus.type=status
以上内容用于配置mod_jk,使其监听两个servlet容器(如JBOSS实例)node1和node2。
在node1中,打开%JBOSS_HOME%/server/all/deploy/jbossweb.sar/server.xml
,修改Engine
节点:
<Engine name="jboss.web" defaultHost="localhost" jvmRoute="node1">
同样,在node2中,将该文件的Engine
节点改为:
<Engine name="jboss.web" defaultHost="localhost" jvmRoute="node2">
JBOSS默认的session是共享的。
在部署Web应用时,需要在应用程序的web.xml
中加入<distributable/>
节点,如下所示:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<display-name>Welcome to JBoss</display-name>
<description>
Welcome to JBoss
</description>
<distributable/>
<!-- ……其他配置 -->
</web-app>
启动
启动Apache
打开控制台,定位到%APACHE_HOME%
,输入如下命令启动Apache服务器:
httpd.exe -k start
输入如下命令可以关闭Apache服务器:
httpd.exe -k shutdown
以集群方式启动JBOSS
以集群方式启动JBOSS的命令如下:
run -c all -g DocsPartition -u 239.255.100.100 -b 0.0.0.0 -Djboss.messaging.ServerPeerID=1
在集群的其他JBOSS实例上,要修改jboss.messaging.ServerPeerID
所对应的值,该值要求在集群中是唯一的。
测试
新建一个test.war
文件夹,在该文件夹下创建index.jsp
文件和WEB-INF
文件夹。在WEB-INF
文件夹下创建如前面所示的web.xml
文件。在index.jsp
文件中加入如下内容:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@page import="java.util.*"%>
<%@page import="java.net.InetAddress;"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Cluster App Test</title>
</head>
<body>
<%
InetAddress ip = InetAddress.getLocalHost();
//out.println(ip.getHostAddress());
%>
This is responsed by <font color="red"> <%=ip.getHostAddress() %></font><br>
Host Name : <font color="red"><%=ip.getHostName() %></font><br>
Time : <font color="red"><%=new Date() %></font><br>
<%
ip = null;
%>
<br/> <br/> <br/> <br/>
Server Info:
<%
out.println(request.getLocalAddr() + " : " + request.getLocalPort()+"<br>");%>
<%
out.println("<br>Session 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("<br/> <b>Session 列表</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">
名称:<input type=text size=20 name="dataName">
<br>
值:<input type=text size=20 name="dataValue">
<br>
<input type=submit>
</form>
</body>
</html>
将该文件夹复制到集群中所有JBOSS实例的%JBOSS_HOME%/server/all/deploy
下,以集群方式重启所有JBOSS实例。
在浏览器中输入http://localhost:8080/test
,观察结果。