keepalived DROP vrrp與配置文件詳解

在線上部署keepalived的時候遇到了問題總結下：

2臺服務器

eth0為內網卡

eth2為外網卡

在主備切換的時候沒有收到vrrp廣播包

剛開始部署的時候copy的網上的配置文件，所以中招了

錯誤日志信息：/var/log/message

Oct  9 07:57:35 test4 Keepalived_vrrp[22495]: Sync instance needed on eth2 !!!
Oct  9 07:57:35 test4 Keepalived_vrrp[22495]: VRRP_Instance(VI_10) Dropping received VRRP packet...
Oct  9 07:57:37 test4 Keepalived_vrrp[22495]: advertissement interval mismatch mine=1000000 rcved=2
Oct  9 07:57:37 test4 Keepalived_vrrp[22495]: Sync instance needed on eth2 !!!
Oct  9 07:57:37 test4 Keepalived_vrrp[22495]: VRRP_Instance(VI_10) Dropping received VRRP packet...
Oct  9 07:57:39 test4 Keepalived_vrrp[22495]: advertissement interval mismatch mine=1000000 rcved=2
Oct  9 07:57:39 test4 Keepalived_vrrp[22495]: Sync instance needed on eth2 !!!
Oct  9 07:57:39 test4 Keepalived_vrrp[22495]: VRRP_Instance(VI_10) Dropping received VRRP packet...
Oct  9 07:57:41 test4 Keepalived_vrrp[22495]: advertissement interval mismatch mine=1000000 rcved=2
Oct  9 07:57:41 test4 Keepalived_vrrp[22495]: Sync instance needed on eth2 !!!
Oct  9 07:57:41 test4 Keepalived_vrrp[22495]: VRRP_Instance(VI_10) Dropping received VRRP packet...
Oct  9 07:57:43 test4 Keepalived_vrrp[22495]: advertissement interval mismatch mine=1000000 rcved=2
Oct  9 07:57:43 test4 Keepalived_vrrp[22495]: Sync instance needed on eth2 !!!
Oct  9 07:57:43 test4 Keepalived_vrrp[22495]: VRRP_Instance(VI_10) Dropping received VRRP packet..

解決方法：

vrrp_instance VI_10 {
    state BACKUP
    interface eth0   注意：eth0是內網網卡，這個選項是定義接受vrrp廣播包的網卡，而不是有的博客說的虛擬ip綁定的網卡，這里被網上配置文件給坑了。
    virtual_router_id 111
    mcast_src_ip 10.28.163.89
    priority 100
    nopreempt

    authentication {
        auth_type PASS
        auth_pass HAmysql
    }

    track_script {
    check_mysqld
    }

    virtual_ipaddress {
    1.1.1.1/29 dev eth2 scope global 這里才是定義vip綁定的網卡為eth2
    }
}