keepalived的vrrp多播报文被禁，导致VIP同时位于多个机器上

查看man keepalived.conf，VRRP instances中给出了单播的设置方法，添加unicast_peer即可：

VRRP instance(s)
describes the movable IP for each instance of a group in vrrp_sync_group.  
Here are described two IPs (on inside_network and on outside_network), 
on machine "my_hostname", which belong to the
       group VG_1 and which will transition together on any state change.

        #You will need to write another block for outside_network.
        vrrp_instance inside_network {
           ...
           unicast_peer {
             <IPADDR>
             ...
           }




 1 [root@ostack01 ~]# cat /etc/keepalived/keepalived.conf
 2 global_defs {
 3    router_id 10.95.149.165      # Router id
 4 }
 5 vrrp_instance COL_1 {
 6     state BACKUP
 7     nopreempt             
 8     interface br0
 9     virtual_router_id 50        
10     priority 100
11     advert_int 1                
12     authentication {
13       auth_type PASS
14       auth_pass qiyeanquan
15     }
16     unicast_peer {
17         10.95.149.165
18         10.95.149.166
19     }
20     virtual_ipaddress {
21       10.95.149.168             
22     }
23 }