1、本次实验是在centos7.4 64位操作系统上进行的
2、预先安装好epel-release源
3、查找可用安装的keepalived源
yum search keepalived
4、实验yum install keepalived -y命令进行安装
5、启动keepalived服务
systemctl start keepalived
6、使用yum安装的会有一个默认配置文件模板
路径为/etc/keepalived/keepalived.conf
可以根据实际情况修改，修改完成之后需要重启keepalived服务
