1安装必须的相关包yum -y install kernel-devel openssl* popt popt-devel2下载安装

wget 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 { jikaituo@126    }    notification_email_from jikaituo@126      smtp_server smtp.126   # 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