CenOS5 x86下配置Nginx+keepalived主从负载均衡

haixin3036

　　CenOS5.8x86下配置Nginx+keepalived主从负载均衡
　　

　　

　　一、环境：
　　centos5.8x86_64、nginx-0.8.46、keepalived-1.1.19
　　主nginx负载均衡器：192.168.1.122
　　辅nginx负载均衡器：192.168.1.123
　　vip：192.168.1.128
　　两台Apache Web服务器
　　

　　二、安装keepalived
　　cd/usr/local/src
　　wget http://www.keepalived.org/software/keepalived-1.1.19.tar.gz
　　tar zxvfkeepalived-1.1.19.tar.gz
　　cdkeepalived-1.1.19
　　./configure--prefix=/usr/local/keepalived
　　make
　　makeinstall
　　

　　以下三行是为了将keepalived做成服务启动方式，方便管理
　　cp /usr/local/keepalived/sbin/keepalived/usr/sbin/
　　cp/usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
　　cp/usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/
　　mkdir/etc/keepalived
　　

　　上面的安装过程可以写一个脚本，名字为install_keepalived.sh,内容如下所示：
　　

　　#!/bin/bash
　　cd/usr/local/src
　　wget http://www.keepalived.org/software/keepalived-1.1.19.tar.gz
　　tar zxvfkeepalived-1.1.19.tar.gz
　　cdkeepalived-1.1.19
　　./configure--prefix=/usr/local/keepalived
　　make
　　makeinstall
　　cp/usr/local/keepalived/sbin/keepalived /usr/sbin/
　　cp/usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
　　cp/usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/
　　

　　

　　给其执行权限即可执行了,chmod +x install_keepalived.sh。
　　mkdir/etc/keepalived
　　cd/etc/keepalived/
　　vimkeepalived.conf
　　

　　!Configuration File for keepalived
　　global_defs{
　　notification_email {
　　yuhongchun027@163.com
　　}
　　notification_email_fromkeepalived@chtopnet.com
　　smtp_server 127.0.0.1
　　smtp_connect_timeout 30
　　router_id LVS_DEVEL
　　}
　　vrrp_instanceVI_1 {
　　state MASTER
　　interface eth0
　　virtual_router_id 51
　　mcast_src_ip 192.168.1.122