Keepalived 双实例双主模式配置

一、环境

A 业务在 lb01 上是主模式，在 lb02 上是备模式
B 业务在 lb01 上是备模式，在 lb02 上是主模式

二、配置

[[email protected]lb01 ~]# cat /etc/keepalived/keepalived.conf
! Configuration File for keepalived    

global_defs {
   notification_email {
     [email protected]
   }
   notification_email_from [email protected]
   smtp_server 127.0.0.1
   smtp_connect_timeout 30
   router_id lb01
}

vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 55
    priority 150
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.123.100/24 dev eth0 label eth0:1
    }
}

vrrp_instance VI_2 {
    state BACKUP
    interface eth0
    virtual_router_id 56
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.123.200/24 dev eth0 label eth0:2
    }
}

[[email protected]lb02 ~]# cat /etc/keepalived/keepalived.conf
! Configuration File for keepalived    

global_defs {
   notification_email {
     [email protected]
   }
   notification_email_from [email protected]
   smtp_server 127.0.0.1
   smtp_connect_timeout 30
   router_id lb02
}

vrrp_instance VI_1 {
    state BACKUP
    interface eth0
    virtual_router_id 55
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.123.100/24 dev eth0 label eth0:1
    }
}

vrrp_instance VI_2 {
    state MASTER
    interface eth0
    virtual_router_id 56
    priority 150
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.123.200/24 dev eth0 label eth0:2
    }
}

[[email protected] ~]# /etc/init.d/keepalived restart    # 查看 lb01 上的主服务器[[email protected] ~]# ip addr | egrep "192.168.123.100|192.168.123.200"    inet 192.168.123.100/24 scope global secondary eth0:1

[[email protected] ~]# /etc/init.d/keepalived restart    # 查看 lb02 上的主服务器
[[email protected] ~]# ip addr | egrep "192.168.123.100|192.168.123.200"
    inet 192.168.123.200/24 scope global secondary eth0:2

[[email protected] ~]# /etc/init.d/keepalived stop       # 停掉 lb01 看会不会切换到 lb02[[email protected] ~]# ip addr | egrep "192.168.123.100|192.168.123.200"    inet 192.168.123.200/24 scope global secondary eth0:2    inet 192.168.123.100/24 scope global secondary eth0:1

[[email protected] ~]# /etc/init.d/keepalived start      # 再次启动看会不会切换回来
[[email protected] ~]# ip addr | egrep "192.168.123.100|192.168.123.200"
    inet 192.168.123.100/24 scope global secondary eth0:1