环境说明

Centos 7版本

配置

• 主-192.168.10.150

[root@nginx ~]# yum install keepalived
[root@nginx ~]# vim /etc/keepalived/keepalived.conf 
! Configuration File for keepalived
#定义全局参数
global_defs {
#当前机器ID
   router_id LVS_1
}
#定义vrrp实例
vrrp_instance VI_1 {
#当前身份为主
    state MASTER
#网络接口
    interface ens33
#虚拟路由器ID
    virtual_router_id 51
#优先级
    priority 100
#vrrp通告时间间隔
    advert_int 1
#定义认证参数
    authentication {
#认证类型为密码
        auth_type PASS
#认证密码
        auth_pass 1111
    }
#定义虚拟IP地址，可多个
    virtual_ipaddress {
#虚拟IP地址
        192.168.10.200
    }
}
[root@nginx ~]# systemctl restart keepalived

• 备-192.168.10.151

[root@nginx-2 ~]# yum install keepalived -y
[root@nginx-2 ~]# vim /etc/keepalived/keepalived.conf 
! Configuration File for keepalived

global_defs {
#ID需与主不一致
   router_id LVS_2
}

vrrp_instance VI_1 {
#身份为备
    state BACKUP
    interface ens33
    virtual_router_id 51
#优先级比主低
    priority 80
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.10.200
    }
}
[root@nginx-2 ~]# systemctl restart keepalived

验证

#在主上查看vip地址

#在备上查看VIP地址

#访问VIP地址中途，在主上关机输入poweroff，模拟宕机，结果如下

完成！