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搭建环境
两台
电脑
//其实一台也够了,不过需要修改其中一个JBoss监听的端口,要不然有冲突
jboss-4.0.4.GA
apache_2.0.59 //我使用的是apache_2.0.59-win32-x86-no_ssl,其实无所谓的
mod_jk-apache-2.0.59.so //Apache请求分发的模块,官网上可以找到
首先安装JBoss,我用的是zip格式的,直接解压缩就可以了,在两台电脑里分别安装。
接下来在其中一台电脑上(这里是192.168.0.2)安装Apache(其实应该再找一台电脑来安装的),很
简单
,
配置JBoss
假设两台电脑的IP分别为192.168.0.2和192.168.0.3。
我们
这里使用JBoss的default目录。
将如下文件从%JBoss_Home%\server\all\lib里面拷到%JBoss_Home%\server\default\lib目录下:
jbossha.jar(加载org.jboss.ha.framework.server.ClusterPartition)
jgroups.jar(JBoss集群底层通信协议)
jboss-cache.jar(加载org.jboss.cache.aop.TreeCacheAop)
还要从%JBoss_Home%\server\all\deploy里把cluster-service.xml和tc5-cluster.sar拷贝到%JBoss_Home%\server\default\deploy里面。
编辑
192.168.0.2的%JBoss_Home%\server\default\deploy\jbossweb-tomcat55.sar\server.xml
修改下面
代码
:
源码
打印
Engine name="jboss.web" defaultHost="localhost">
修改为:
源码
打印
Engine name="jboss.web" defaultHost="localhost" jvmRoute="node1">
其中 jvmRoute是用来让apache识别的节点名称,一个节点一个名称,注意不要有重复的(可以
结合
IP设置)。
同理编辑192.168.0.3的%JBoss_Home%\server\default\deploy\jbossweb-tomcat55.sar\server.xml
注意把jvmRoute设置为node2,可以设置成别的只要和192.168.0.2的不重复就行,但是要和Apache的workers.properties(稍后介绍)下的配置一致。
在%JBoss_Home%\server\default\deploy\jbossweb-tomcat55.sar\ROOT.war\目录下添加一个新文件夹\test,并在里面添加如下3个jsp文件:
index.jsp
源码
打印
%@ page contentType="text/html;charset=ISO8859_1" %> html> head> title>Testtitle> meta http-equiv="Content-Type" content="text/html; charset=gb2312"> head> body onload="document.form.name.focus()"> br>br>br> center> The host is : %=java.net.InetAddress.getLocalHost().toString()%>br> Your session id is : %=session.getId()%>br> Your session detail is : %=session.toString()%>br> Your session context is : %=session.getSessionContext()%>br>br> Please input your name:br> form action="test_action.jsp" method="POST" name="form"> input type="input" name="name"/> input type="submit" value="提交"> form> center> body> html>
Test
The host is :
Your session id is :
Your session detail is :
Your session context is :
Please input your name:
test_action.jsp
源码
打印
%@ page contentType="text/html;charset=ISO8859_1" %> html> head> title>Test Actiontitle> meta http-equiv="Content-Type" content="text/html; charset=gb2312"> head> % String name = request.getParameter("name"); session.setAttribute("name",name); String host = java.net.InetAddress.getLocalHost().toString(); %> body> br> br> center> The host is : %=host%>br>br> Your session id is : %=session.getId()%>br> Your session detail is : %=session.toString()%>br> Your session context is : %=session.getSessionContext()%>br>br> Your name is : %=name%>br> This name is set into the session.br> Please click a href="session.jsp">herea> to check the session valid or not. center> body> html>
Test Action
The host is :
Your session id is :
Your session detail is :
Your session context is :
Your name is :
This name is set into the session.
Please click here to check the session valid or not.
session.jsp
源码
打印
%@ page contentType="text/html;charset=ISO8859_1" %> html> head> title>Test Actiontitle> meta http-equiv="Content-Type" content="text/html; charset=gb2312"> head> % String name = null; if(session.getAttribute("name")!=null) name = (String)session.getAttribute("name"); String host = java.net.InetAddress.getLocalHost().toString(); %> body> br> br> center> The host is : %=host%>br> Your session id is : %=session.getId()%>br> Your session detail is : %=session.toString()%>br> Your session context is : %=session.getSessionContext()%>br>br> % if(name!=null){ out.print("Your name is "+name+"br>"); out.print("The session is valid."); } else{ out.print("The session is invalid!!!"); } %> a href="index.jsp">Return!a> center> body> % if(session.getAttribute("name")!=null) session.invalidate(); %> html>
Test Action
The host is :
Your session id is :
Your session detail is :
Your session context is :
Return!
编辑%JBoss_Home%\server\default\deploy\jbossweb-tomcat55.sar\ROOT.war\WEB-INF\web.xml在节点下增加如下代码:
源码
打印
distributable/>
完成
后web.xml代码如下:
源码
打印
xml version="1.0" encoding="ISO-8859-1"?> PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd"> web-app> distributable/> display-name>Welcome to JBossdisplay-name> description> Welcome to JBoss description> servlet> servlet-name>Status Servletservlet-name> servlet-class>org.jboss.web.tomcat.tc5.StatusServletservlet-class> servlet> servlet-mapping> servlet-name>Status Servletservlet-name> url-pattern>/statusurl-pattern> servlet-mapping> web-app>
Welcome to JBoss
Welcome to JBoss
Status Servlet
org.jboss.web.tomcat.tc5.StatusServlet
Status Servlet
/status
看到第8行了吗?^o^
到这里JBoss就配置完成了^o^
配置Apache
JBoss的Web集群使用apache的mod_jk,
浏览器
请求apache
服务器
,apache服务器根据workers.properties中的配置进行request分发,apache服务器和Jboss中的Tomcat可以用ajp1.3进行通信的,request通过ajp1.3协议的包装被发送到Jboss,Jboss执行后返回结果。
将
下载
到的mod_jk-apache-2.0.59.so保存到%Apache%\modules\目录下,并去掉版本号重命名为“mod_jk.so”,如果不改也可以在mod-jk.conf文件(稍后介绍)里修改配置。
在%Apache%\conf\目录下新建mod-jk.conf,并将如下代码添加进去:
源码
打印
# Load mod_jk module # Specify the filename of the mod_jk lib LoadModule jk_module modules/mod_jk.so # Where to find workers.properties JkWorkersFile conf/workers.properties # Where to put jk logs JkLogFile logs/mod_jk.log # Set the jk log level [debug/error/info] JkLogLevel debug # Select the log format JkLogStampFormat "[%a %b %d %H:%M:%S %Y]" # JkOptions indicates to send SSK KEY SIZE JkOptions +ForwardKeySize +ForwardURICompat -ForwardDirectories # JkRequestLogFormat JkRequestLogFormat "%w %V %T" # Mount your applications #JkMount /application/* loadbalancer JkMount /* loadbalancer # You can use external file for mount points. # It will be checked for updates each 60 seconds. # The format of the file is: /url=worker # /examples/*=loadbalancer JkMountFile conf/uriworkermap.properties # Add shared memory. # This directive is present with 1.2.10 and # later versions of mod_jk, and is needed for # for load balancing to work properly JkShmFile logs/jk.shm # Add jkstatus for managing runtime data Location /jkstatus/> JkMount status Order deny,allow Deny from all Allow from 127.0.0.1 Location> # Load mod_jk module
# Specify the filename of the mod_jk lib
LoadModule jk_module modules/mod_jk.so
# Where to find workers.properties
JkWorkersFile conf/workers.properties
# Where to put jk logs
JkLogFile logs/mod_jk.log
# Set the jk log level [debug/error/info]
JkLogLevel debug
# Select the log format
JkLogStampFormat "[%a %b %d %H:%M:%S %Y]"
# JkOptions indicates to send SSK KEY SIZE
JkOptions +ForwardKeySize +ForwardURICompat -ForwardDirectories
# JkRequestLogFormat
JkRequestLogFormat "%w %V %T"
# Mount your applications
#JkMount /application/* loadbalancer
JkMount /* loadbalancer
# You can use external file for mount points.
# It will be checked for updates each 60 seconds.
# The format of the file is: /url=worker
# /examples/*=loadbalancer
JkMountFile conf/uriworkermap.properties
# Add shared memory.
# This directive is present with 1.2.10 and
# later versions of mod_jk, and is needed for
# for load balancing to work properly
JkShmFile logs/jk.shm
# Add jkstatus for managing runtime data
JkMount status
Order deny,allow
Deny from all
Allow from 127.0.0.1
上述代码的第3行就是配置mod_jk.so模块的路径。
编辑%Apache%\conf\httpd.conf在最后一行添加如下代码:
Include conf/mod-jk.conf Include conf/mod-jk.conf
在 %Apache%\conf\目录下添加workers.properties文件,该文件就是配置Apache所要将request转发到的JBoss的路径
信息
,代码如下:
源码
打印
# 定义request所要转发到的节点 worker.list=loadbalancer,status # 定义节点 Node1 worker.node1.port=8009 worker.node1.host=192.168.0.2 worker.node1.type=ajp13 worker.node1.lbfactor=1 worker.node1.cachesize=10 # 定义节点 Node2 worker.node2.port=8009 worker.node2.host=192.168.0.3 worker.node2.type=ajp13 worker.node2.lbfactor=1 worker.node2.cachesize=10 # 负载配置 worker.loadbalancer.type=lb worker.loadbalancer.balance_workers=node1,node2 worker.loadbalancer.sticky_session=0 worker.status.type=status # 定义request所要转发到的节点
worker.list=loadbalancer,status
# 定义节点 Node1
worker.node1.port=8009
worker.node1.host=192.168.0.2
worker.node1.type=ajp13
worker.node1.lbfactor=1
worker.node1.cachesize=10
# 定义节点 Node2
worker.node2.port=8009
worker.node2.host=192.168.0.3
worker.node2.type=ajp13
worker.node2.lbfactor=1
worker.node2.cachesize=10
# 负载配置
worker.loadbalancer.type=lb
worker.loadbalancer.balance_workers=node1,node2
worker.loadbalancer.sticky_session=0
worker.status.type=status
上述代码中:
port是配置JBoss AJP所监听的端口号,可以在%JBoss_Home%\server\default\deploy\jbossweb-tomcat55.sar\server.xml 看到,如下
源码
打印
Connector port="8009" address="${jboss.bind.address}" emptySessionPath="true" enableLookups="false" redirectPort="8443" protocol="AJP/1.3"/>
host定义JBoss所在机器的IP地址
lbfactor定义该节点的权重,数字越大分发到该节点的request越多
cachesize是servlet线程池的大小(对session复制有影响)
到这里所有的配置就全部完成啦^o^
启动192.168.0.2上的apache和两台机器上的JBoss。
打开浏览器,输入网址访问apache:http://192.168.0.2/test/index.jsp,回车!看到了吧?
页面上有JBoss所在机器的IP地址,刷新页面还能看到IP在变化,说明apache将request分发到了不同的JBoss上,在输入框中输入随便一个字符串并提交还能测试JBoss 的session复制情况。
本文来自ChinaUnix博客,如果查看原文请点:http://blog.chinaunix.net/u1/56731/showart_457823.html |
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