1安装必须的相关包
yum -y install  kernel-devel  openssl* popt popt-devel
2下载安装
wget http://www.keepalived.org/software/keepalived-1.2.9.tar.gztar -xf keepalived-1.2.9.tar.gz mkdir /usr/local/keepalived cd ~/ keepalived-1.2.9./configure --prefix=/usr/local/keepalived/make && make installcp /usr/local/keepalived/sbin/keepalived /usr/sbin/ cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfigcp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/chmod +x /etc/init.d/keepalivedmkdir /etc/keepalivedcp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived
3修改配置文件如下
[root@m128 ~]# vim /etc/keepalived/keepalived.confglobal_defs { notification_email { [email protected] } notification_email_from [email protected] smtp_server smtp.126.com # 邮件服务器地址 smtp_connect_timeout 30 # 连接超时时间 router_id lvs_master}vrrp_script chk_http_port { script /etc/keepalived/check_haproxy.sh # haproxy运行检测脚本[haproxy宕掉重启haproxy服务] interval 5 # 脚本执行间隔 weight -5 # 执行脚本后优先级变更：5表示优先级+5;-5则表示优先级-5}vrrp_instance vi_a { state master # 主上此值为master,从上为backup interface eth0 virtual_router_id 50 # 此值主从必须一致 priority 100 advert_int 1 authentication { # authentication两个参数值,主从也必须一致 auth_type pass auth_pass yiban }track_script { chk_http_port } virtual_ipaddress { 192.168.78.220 }}
5启动keepalived
确保网络正常
service network restart (线上不要这么做) 
/etc/init.d/keepalived start
查看结果
ip a