1、安装keepalived （keepalived-1.3.6.tar.gz下载：http://download.csdn.net/download/yang_xu_1987/9975924）
解压：tar zxvf keepalived-1.3.6.tar.gz
cd keepalived-1.3.6./configure
make && make install
创建配置文件：
mkdir /etc/keepalived
cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/
配置文件：
/etc/keepalived/keepalived.conf
开启keepalived 服务：
/usr/local/sbin/keepalived
结束keepalived 服务：
pkill keepalived
查看：
tail -f /var/log/messages
２、配置keepalived(master&backup)
修改配置文件：
vi /etc/keepalived/keepalived.conf
master:
backup:
从图中最下方设置的虚拟地址进入，默认进入master主机网站，如果master宕机则进入backup主机网站。
如果采用均衡，那么需要按照如上配置文件再反向配置一遍。
在原有基础上新加入
原master：
原backup：