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