RedHat linux+apache+tomcat+mod_jk 负载均衡安装说明 1. 操作系统 RedHat Linux 9.0 2. 所需软件 Apache 2.0.54 下载地址 http://apache.freelamp.com/httpd/httpd-2.0.54.tar.gz Tomcat5.5.9 下载地址 http://apache.justdn.org/jakarta/tomcat-5/v5.5.9/bin/jakarta-tomcat-5.5.9.tar.gz Mod_jk 1.2.14 下载地址 http://apache.justdn.org/jakarta/tomcat-connectors/jk/source/jk-1.2.14/jakarta-tomcat-connectors-1.2.14-src.tar.gz Jdk 1_5_0_04 下载地址 http://java.sun.com/j2se/1.5.0/download.jsp 备注：下载时将所需软件包文件保存在/usr/local目录下 3. 安装步骤 A 安装JDK # cd /usr/local/ # chmod +x jdk-1_5_0_04-linux-i586-rpm.bin # ./jdk-1.5.0_04-linux-i586-rpm.bin # cd /usr/java/ # ln -s /usr/java/jdk-1_5_0_04 /usr/local/java # vi /etc/profile #添加如下内容 JAVA_HOME=/usr/local/java/ CLASSPATH=/usr/local/java/lib/dt.jar:/usr/local/java/lib/tools.jar PATH=/usr/local/java/bin:$PATH export PATH JAVA_HOME CLASSPATH B 安装Apache # cd /usr/local/ # tar xvfz httpd-2.0.54.tar.gz # cd httpd-2.0.54 #./configure --prefix=/usr/local/apache --enable-module=so # make # make install # cd /usr/local/apache/conf # vi ./httpd.conf 将Listen 80 修改为Listen <Your IP>:80 将ServerName 修改为ServerName <HOST-NAME>:80 在DirectoryIndex中添加 index.jsp # cd /usr/local/apache/bin/ # ./apachectl configtest 若显示Syntax ok则表明安装成功 #./apachectl start 启动apache服务，访问本机80端口，查看端口是否正常 # ./apachectl stop 关闭服务 备注：prefix定义apache的安装路径 C安装Tomcat # cd /usr/local/ # tar xvfz jakarta-tomcat-5.5.9.tar.gz # ln –s /usr/local/jakarta-tomcat-5.5.9 /usr/local/tomcat # vi /usr/local/tomcat/bin/catalina.sh JAVA_HOME=/usr/local/java 启动服务后，访问本机8080端口，查看端口是否正常 # /usr/local/tomcat/bin/startup.sh /startup.bat 关闭服务 # /usr/local/tomcat/bin/shutdown.sh /shutdown.bat D 安装JK #cd /usr/local/ # tar xzvf jakarta-tomcat-connectors-1.2.14-src.tar.gz #cd jakarta-tomcat-connectors-1.2.14-src/jk/native #chmod 755 buildconf.sh #./buildconf.sh #./configure --with-apxs=/usr/local/apache/bin/apxs #make #make install #cd /usr/local/ jakarta-tomcat-connectors- jk1.2.14-src/jk/native/apache-2.0/ #cp mod_jk.so /usr/local/apache/modules/ E 系统整合 #vi /usr/local/apache/conf/httpd.conf 在文件最末尾加上如下语句 # Load mod_jk LoadModule jk_module modules/mod_jk.so # Configure mod_jk JkWorkersFile conf/workers.properties JkLogFile logs/mod_jk.log JkLogLevel info JkMount /*.jsp loadbalancer JkMount /servlet/* loadbalancer JkMount /application/* loadbalancer #vi /usr/local/apache/conf/workers.properties # # workers.properties # # In Unix, we use forward slashes: ps=/ # list the workers by name worker.list=tomcat1, tomcat2, loadbalancer # ------------------------ # First tomcat server # ------------------------ worker.tomcat1.port=8009 worker.tomcat1.host=127.0.0.1 worker.tomcat1.type=ajp13 # Specify the size of the open connection cache. #worker.tomcat1.cachesize # # Specifies the load balance factor when used with # a load balancing worker. # Note: # ----> lbfactor must be > 0 # ----> Low lbfactor means less work done by the worker. worker.tomcat1.lbfactor=100 # ------------------------ # Second tomcat server # ------------------------ worker.tomcat2.port=8009 worker.tomcat2.host=192.168.1.34 worker.tomcat2.type=ajp13 # Specify the size of the open connection cache. #worker.tomcat2.cachesize # # Specifies the load balance factor when used with # a load balancing worker. # Note: # ----> lbfactor must be > 0 # ----> Low lbfactor means less work done by the worker. worker.tomcat2.lbfactor=100 # ------------------------ # Load Balancer worker # ------------------------ # The loadbalancer (type lb) worker performs weighted round-robin # load balancing with sticky sessions. # Note: # ----> If a worker dies, the load balancer will check its state # once in a while. Until then all work is redirected to peer # worker. worker.loadbalancer.type=lb worker.loadbalancer.balanced_workers=tomcat1, tomcat2 # # END workers.properties # #vi /usr/local/tomcat/conf/server.xml <Connector port="8009" protocolHandlerClassName="org.apache.jk.server.JkCoyoteHandler" redirectPort="8443" protocol="AJP/1.3" /> 在120行左右加入如下语句 <Engine name="Standalone" defaultHost="localhost" jvmRoute="tomcat1"></Engine> 若第二台tomcat，将jvmRoute的修改为tomcat2 至此，系统已经整个完毕 启动apache和tomcat服务 # /usr/local/apache/bin/apachectl start #/usr/local/tomcat/bin/catalina.sh start 将如下内容添加至/etc/rc.d/rc.local文件末尾，以便系统启动后开启apache,tomcat服务 /usr/local/tomcat/bin/catalina.sh start /usr/local/apache/bin/apachectl start
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