Apache,Tomcat集群和负载均衡(转)
配置前的准备工作
在配置集群应用前要对集群的配置信息有一个良好的设计，下面就是我们这次配置的集群信息： 在同一网段内的不同机器上配置集群，以下是以2台机器做群集， 机器类型 操作系统 硬件配置 角色 备注
普通PC Linux as 4 IP:10.3.15.85 PORT:9080 Managed Server Pc1 普通PC Linux as 4 IP: 10.3.15.84 PORT:9080 Managed Server Pc2 普通PC Linux as 4 IP: 10.3.15.85 PORT:80 Balancer Server Pc1
1 操作系统 RedHat Linux as4 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，也可以采用jdk1.4 3 安装步骤 3.1 安装JDK # cd /usr/local/
# chmod 777 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
3.2 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
将ServerName修改为ServerName
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
3.3 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 3.4 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/
4 系统整合
4.1 在文件最末尾加上如下语句 #vi /usr/local/apache/conf/httpd.conf
# 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
4.2 添加workers.properties
#vi /usr/local/apache/conf/workers.properties 内容如下：
worker.list=loadbalancer
#Define a ‘local_worker’ worker using ajp13 worker.worker1.port=8009 worker.worker1.host=10.3.15.84
worker.worker1.type=ajp13 worker.worker1.lbfactor=1 worker.worker1.local_worker=0 worker.worker1.cachesize=1000 worker.worker1.cache_timeout=600 worker.worker1.socket_keepalive=1 worker.worker1.socket_timeout=0 worker.worker1.reclycle_timeout=300 worker.worker1.retries=3
#Define another ‘local_worker’ worker using ajp13 worker.worker2.port=8009 worker.worker2.host=10.3.15.85 worker.worker2.type=ajp13 worker.worker2.lbfactor=1 worker.worker2.local_worker=1 worker.worker2.cachesize=1000 worker.worker2.cache_timeout=600 worker.worker2.socket_keepalive=1 worker.worker2.socket_timeout=0 worker.worker1.reclycle_timeout=300 worker.worker1.retries=3
#Define the LB worker worker.loadbalancer.type=lb