使用mod_jk使用Apache来平衡JBoss应用服务器

我看到这样的潜在错误：

1. 基于您想要使用AJP协议在端口8080上连接的workers.conf文件。 如果你想使用AJP，你应该使用这样的定义（查看端口定义）：

    worker.worker1.type=ajp13 worker.worker1.connection_pool_size=20 worker.worker1.host=192.168.1.12 worker.worker1.port=8009 worker.worker1.lbfactor=1 

2. 在server.xml文件中Engine标签中缺less定义。 在每个服务器上，您应该定义jvmRoute参数 – 基于您的workrs.conf文件：

    <Engine name="jboss.web" defaultHost="localhost" jvmRoute="worker1"> 

   你可以在这里find更多的信息： http : //tomcat.apache.org/tomcat-5.5-doc/config/engine.html

3. 你如何运行你的JBoss？ 默认情况下JBoss只在localhost上列出。 你可以使用netstat来检查它：

    netstat -ltnp 

   你也可以用-b参数运行JBoss：

    run.sh -b 192.168.1.12 

这里是整个过程一步一步负载平衡jboss应用服务器与Apache使用mod_jk。

步骤1：环境设置

 Ubuntu 11.04 JBoss AS 5.1-GA Apache 2 mod_jk 1.2.30 My setup looks something like the following: Apache Web Server: 192.168.1.12:80 - lb1 JBoss App Server 1: 192.168.1.53:8080 - app1 JBoss App Server 2: 192.168.1.56:8080 - app2 

第2步：configurationApache

在/ etc / apache2 / conf文件夹中创build以下文件

  step -I: create file httpd.conf # Include mod_jk's specific configuration file Include conf/mod-jk.conf 

并用/ etc / apache中的文件replace这个文件

 step -II: create file mod-jk.conf # Set the jk log level [debug/error/info] JkLogLevel info # 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 # 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 # here cluster1 is the name of the test project that i used JkMountFile conf/uriworkermap.properties JkMount /cluster1 loadbalancer JkMount /cluster1/* loadbalancer # 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> <VirtualHost *:80> ServerName 192.168.1.53 JkMountFile conf/uriworkermap.properties </VirtualHost> 

步骤-III：创build文件uriworkermap.properties

  # Simple worker configuration file # Mount the Servlet context to the ajp13 worker /jmx-console=loadbalancer /jmx-console/*=loadbalancer /web-console=loadbalancer /web-console/*=loadbalancer /*=loadbalancer 

步骤-IV：创build文件workers.properties

  # Define list of workers that will be used # for mapping requests worker.list=loadbalancer,status # Define Node1 # modify the host as your host IP or DNS name. worker.worker1.port=8009 worker.worker1.host=192.168.1.53 worker.worker1.type=ajp13 worker.worker1.lbfactor=1 worker.worker1.cachesize=10 # Define Node2 # modify the host as your host IP or DNS name. worker.worker2.port=8009 worker.worker2.host= 192.168.1.56 worker.worker2.type=ajp13 worker.worker2.lbfactor=1 worker.worker2.cachesize=10 # Load-balancing behaviour worker.loadbalancer.type=lb worker.loadbalancer.balance_workers=worker1,worker2 worker.loadbalancer.sticky_session=1 #worker.list=loadbalancer # Status worker for managing load balancer worker.status.type=status # Simple worker configuration file # Mount the Servlet context to the ajp13 worker /jmx-console=loadbalancer /jmx-console/*=loadbalancer /web-console=loadbalancer /web-console/*=loadbalancer /*=loadbalancer 

第三步：configurationjboss

修改你的jboss的server.xml，如下所示：

 <Engine name="jboss.web" defaultHost="localhost" jvmRoute="worker1"> 

相同的server2使用worker2而不是worker1。

现在开始jboss和apache。 在lb1机器的浏览器中尝试localhost，它会被redirect到server1上运行的jboss页面（在端口8080上）。

为获得最佳效果，请尝试使用三种不同的机器 我在ubuntu-11.04上试过了，而且它的工作正常。

而已。

谢谢………….