HAProxy+LAMP动静分离
实验目的：为了减轻后端服务器的承载量，使用HAProxy做动静分离，将动态资源放在动态web组中，静态资源放在static组中，图片放在image server中，数据库单独用一台服务器。网络拓扑图
http://s1.运维网.com/images/20171213/1513149570448957.png
配置HAProxy服务器
~]# yum -y install haproxy
~]# vim /etc/haproxy/haproxy.cfgfrontendmain *:80
acl url_web path_end -i .html .css .js .htm
use_backend websers if url_web
acl url_static path_end -i .jpg .gif .png
use_backend static if url_static
default_backend app
rspadd X-Via:\ HAProxy
rspidel ^Server.*
backend websers
balance roundrobin
rspadd X-Service:\ WEBServer
server ws1 172.16.67.1:80 check rise 3 fall 5 weight 2 maxconn 10 cookie ws1
server ws2 172.16.67.2:80 check rise 3 fall 5 weight 3 maxconn 10 cookie ws1
backend static
balance roundrobin
rspadd X-Service:\ ImageServer
server static 172.16.69.1:80 check
backend app
balance roundrobin
rspidel ^Server.*
rspadd X-Service:\ AppServer
serverapp1 172.16.67.1:80 check rise 3 fall 5 weight 2 maxconn 10 cookie as1
serverapp2 172.16.67.2:80 check rise 3 fall 5 weight 3 maxconn 10 cookie as1~]# service haproxy start配置后端静态web组和images server
~]# yum install -y httpd
~]# service httpd start
~]#tar xf wordpress-4.8.1-zh_CN.tar.gz -C /var/www/html/ 配置后端动态web组
~]# yum install -y httpd php php-mysql
~]# service httpd start
~]# tar xf wordpress-4.8.1-zh_CN.tar.gz -C /var/www/html/
~]# cd /var/www/html/wordpress
wordpress]# cp wp-config-sample.php wp-config.php
wordpress]# vim wp-config.php/** WordPress数据库的名称 */
define('DB_NAME', 'wpdb');
/** MySQL数据库用户名 */
define('DB_USER', 'wpadmin');
/** MySQL数据库密码 */
define('DB_PASSWORD', '123456');
/** MySQL主机 */
define('DB_HOST', '172.16.69.2');
/** 创建数据表时默认的文字编码 */
define('DB_CHARSET', 'utf8');
/** 数据库整理类型。如不确定请勿更改 */
define('DB_COLLATE', ''); 配置MySQL数据库服务器
~]# yum install -y mysql mysql-server
~]# service mysqld start
~]# mysql
mysql> create database wpdb;
mysql> grant all on wpdb.* to 'wpadmin'@'172.16.%.%' identified by '123456';
mysql> flush privileges;访问测试
http://172.16.72.1/wordpress/
http://s1.运维网.com/images/20171213/1513152333737940.png到此，试验结束。
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