工行原图

apache+tomcat负载均衡_项目实例_第1张图片

更改后的图:

 

apache+tomcat负载均衡_项目实例_第2张图片

注:

用户访问工行服务器,访问的为apahce的接口,apache做负载将用户分配到不同的tomcat中,当其中一个tomcat出现故障,apache只会使用另一个tomcat,不会影响业务,故障的tomcat修复后会自动加入工作队列。

 

项目应用接口:

服务

功能

端口

Apache

负载

80

Tomcat

应用管理服务

8009

Tomcat1

应用管理服务

8019

 

项目部署:

一、 部署tomcat(此处为公司的脚本制作的,tomcat安装,请大家参考其他文档)

1、进入/mnt/backup/rytong目录,解压base包。

# tar -zxvf module-tms-0.3-dtar.gz

进入解压目录,给执行权限

# chmod +x setup.ryt

执行脚本

系统会自动部署tomcat环境

部署目录为:

 /var/www/apps/java/

2、发布代码略

3、修改端口号,

         1tomcat1

# vi conf/server.xml

 

    8004" protocol="HTTP/1.1"

               connectionTimeout="20000"

               redirectPort="8443" />

························································

   

    8009" protocol="AJP/1.3" redirectPort="8443" />

··························································

8005" shutdown="SHUTDOWN">

         2tomcat2

         8015" shutdown="SHUTDOWN">

··························································

    8014" protocol="HTTP/1.1"

               connectionTimeout="20000"

               redirectPort="8443" />

   

     ························································

         

    8019" protocol="AJP/1.3" redirectPort="8443" />

二、 安装apache

# yum install http*

Apahce负载需要mod_jk模块,rpm安装的http服务是没有的,需要手动安装。

Mod_jk下载地址:http://tomcat.apache.org/download-connectors.cgi

tomcat-connectors-1.2.35-src.tar.gz

# tar -zxvf tomcat-connectors-1.2.35-src.tar.gz

安装mode_jk需要安装autoconflibtool

# ./buildconf.sh执行脚本,脚本在native目录内

显示结果为:

 

buildconf: checking installation...

buildconf: autoconf version 2.59 (ok)

buildconf: libtool  version 1.5.22  (ok)

buildconf: libtoolize --automake --copy

buildconf: aclocal

buildconf: autoheader

buildconf: automake -a --foreign --copy

buildconf: autoconf

编译前配置

# ./configure --with-apxs=/usr/sbin/apxs

编译:

#make

将模块放入到apache模块目录下

# cp apache-2.0/mod_jk.so /etc/httpd/modules/

apacheconf目录下建立workers.properties

# vi workers.properties

内容如下:

worker.list=BALANCER

worker.tomcat_1.host=localhost

worker.tomcat_1.port=8009

worker.tomcat_1.type=ajp13

worker.tomcat_1.lbfactor=1

worker.tomcat_2.host=localhost

worker.tomcat_2.port=8019

worker.tomcat_2.type=ajp13

worker.tomcat_2.lbfactor=1

worker.BALANCER.type=lb

worker.BALANCER.balance_workers=tomcat_1,tomcat_2

修改apachehttpd.conf

LoadModule jk_module modules/mod_jk.so

JkWorkersFile conf/workers.properties

 

JkMount /servlet/* BALANCER

 

JkMount /*.* BALANCER

 

三、 Tomcat优化

添加主目录

   

       

         workDir="/var/www/apps/java/tomcat2/webapps/icbcmovie" />

               connectionTimeout="20000" 

               redirectPort="8443" maxThreads="1000" minSpareThreads="25" maxSpareThreads="75" enableLookups="false" compression="on" compressionMinSize="2048" acceptCount="500" URIEncoding="UTF-8"/>

catalina.sh 中需要增加内存

JAVA_OPTS="-Xms512m -Xmx1024m -XX:PermSize=128m -XX:MaxPermSize=512m"

 

四、 测试略