安装

yum install keepalived

修改配置文件

cd /etc/keepalived/ vim keepalived.conf

systemctl enable keepalived systemctl start keepalived

[root@ops-83 ~]# cat /etc/keepalived/keepalived.conf
! Configuration File for keepalived

global_defs {
   notification_email {
        wanghui3w@139.com
   }

   notification_email_from wanghui3w@139.com
   smtp_server smtp.139.com
   smtp_connect_timeout 30
   router_id NGINX_UPSTREAM
}

vrrp_instance VI_1 {
    state MASTER
    interface eno16777984
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1346
    }
    virtual_ipaddress {
        192.168.0.123
    }
}
[root@ops-83 ~]#