Linux下apache负载均衡与JBoss集群配置.doc

Linux下apache负载均衡与JBoss集群配置一、 安装并配置JDK1下载JDK(1.5版本及以上)2安装 1) 首先将安装包放到usr目录下，然后启动终端。输入：rootlocalhost usr# sudo chmod +x jdk-1_5_0_19-linux-i586-rpm.bin /给当前用户安装权限 红框内为jdk的版本根据自己的版本输入相应的字段 2) rootlocalhost usr# ./jdk-1_5_0_19-linux-i586-rpm.bin 然后根据提示输入yes /解压缩在当前文件夹出现.rpm文件3) 输入以下命令 #chmod +x jdk-1_5_0_19-linux-i586.rpm /变更权限安装程序#rpm -ivh jdk-1_5_0_19-linux-i586.rpm 3 设置环境变量找到/etc/profile文件打开在最后面加入JAVA_HOME=/usr/java/jdk1.5.0_19PATH=$JAVA_HOME/bin:$PATHCLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jarexport PATH JAVA_HOME CLASSPATH保存退出注销系统安装成功后输入java version 查看版本是否正确，显示以下信息则正确。java -version 1.5.0_19Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_19-b02)Java HotSpot(TM) Client VM (build 1.5.0_19-b02, mixed mode, sharing)二、安装并配置JBoss环境变量1 下载JBoss(JBoss5或以上版本)2 安装JBoss解压到usr目录下建个文件夹(我的放到jboss目录下)即可3 配置JBoss环境变量找到/etc/profile文件打开在最后面加入:JBOSS_HOME=/usr/jboss/jboss-5.1.0.GA PATH=$JBOSS_HOME/bin:$PATHexport JBOSS_HOME PATH保存并注销系统三、 Jboss集群负载均衡器配置1.安装apache1)下载apache (httpd-2.2.17.tar.gz)2)解压 右键解压到此处。3) 编译打开解压获得的文件夹然后在空白处打开终端输入:./configure然后依次输入:make clean 回车make 回车make install 回车4) 修改配置。/本例中，提供服务的监听端口是7070，请根据实际情况修改。打开 /usr/local/apache2/conf/httpd.conf文件将Listen 80 改成Listen 7070将User daemon和Group daemon 改为 User apache和Group apache删除ServerName前的# 将该行改为 ServerName :8888然后添加用户和用户组在终端输入:groupadd apacheuseradd apache g apache 2.apache mod_jk的配置1) 下载mod_jk，将其改名为mod_jk.so，拷贝到/usr/local/apache2/modules下然后打开终端输入: chmod +x /usr/local/apache2/modules/mod_jk.so /相应的安装权限2) 在 /usr/local/apache2/conf/httpd.conf 的末尾增加: Include conf/mod_jk.conf3) 建立空文件/usr/local/apache2/conf/perties并在该目录下建立文件mod_jk.conf并输入以下内容：_# Load mod_jk module# Specify the filename of the mod_jk libLoadModule jk_module modules/mod_jk.so# Where to find pertiesJkWorkersFile conf/perties# Where to put jk logsJkLogFile logs/mod_jk.log# Set the jk log level debug/error/infoJkLogLevel info# Select the log formatJkLogStampFormat “%a %b %d %H:%M:%S %Y”# JkOptions indicates to send SSK KEY SIZEJkOptions +ForwardKeySize +ForwardURICompat -ForwardDirectories# JkRequestLogFormatJkRequestLogFormat “%w %V %T”# Mount your applicationsJkMount /* 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/*=loadbalancerJkMountFile conf/perties# 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 properlyJkShmFile logs/jk.shm# Add jkstatus for managing runtime dataJkMount statusOrder deny,allowDeny from allAllow from 保存在该目录下建立文件perties并输入以下内容:_# Define list of workers that will be used# for mapping requestsworker.list=loadbalancer,status# Define Node1# modify the host as your host IP or DNS name.worker.node1.port=8009worker.node1.host=05worker.node1.type=ajp13worker.node1.lbfactor=1# Define Node2# modify the host as your host IP or DNS name.worker.node2.port=8009worker.node2.host= 00worker.node2.type=ajp13worker.node2.lbfactor=0# Define Node3# modify the host as your host IP or DNS name.worker.node3.port=8009worker.node3.host= 192.168. 0.110worker.node3.type=ajp13worker.node3.lbfactor=1# Load-balancing behaviourworker.loadbalancer.type=lbworker.loadbalancer.balance_workers=node1,node2,node3worker.loadbalancer.sticky_session=1#worker.list=loadbalancer# Status worker for managing load balancerworker.status.type=status_说明:worker.node1.host、worker.node2.host和worker.node3.host要改成jboss集群各机器的实际IP.如果有更多的节点,顺序定义更多的node段,并在worker.loadbalancer.balance_workers后全部列出.lbfactor是负载分配权重,值越大分配的负载越多.3.JBoss集群节点配置打开JBoss目录下/usr/local/jboss/server/all/deploy/jboss-web.sar/server.xml和/usr/local/jboss/server/default/deploy/jboss-web.sar/server.xml找到 Connector port=8080 address=$（如有外部不可以通过web浏览器访问jboss，则要改成）找到 注意,jvmRoute是节点号，要与在apache的perties中的定义相对应.四、 启动JBoss集群1. 启动负载均衡器apache在/usr/local/apache2/bin目录下执行./httpd k start (终止命令： ./httpd k stop)在/usr/local/apache2/logs/mod_jk.log中，看到apache初始化mod_jk的日志:Wed Aug 01 10:36:11 20076636:63168 info init_jk:mod_jk.c (2743): mod_jk/1.2.23 initializedWed Aug 01 10:36:11 20076637:63168 info init_jk:mod_jk.c (2743): mod_jk/1.2.23 initialized后面如有错误信息，是因为集群中的节点尚未启