Keepalived+Redis双机热备无法正确绑定VIP，Keepalived VRRP_Instance(VI_1) Now in FAULT state

[wzrlover]

Ubuntu14.04 + Keepalived1.2.13

172.18.8.74 (master，vip:172.18.8.100)
172.18.8.73 (slave,vip:172.18.8.100)

通过keepalived 实现redis主从备份零切换

keepalived.conf配置文件，如下：

! Configuration File for keepalived

global_defs {
   router_id ubuntu-lvs-74
}

vrrp_script chk_redis {
    script "/etc/keepalived/scripts/redis_check.sh"
    interval 2
}

vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 51
    priority 101 #  备机 优先级为100

    authentication {
        auth_type PASS
        auth_pass redis
    }

    track_script {
       chk_redis
    }

    virtual_ipaddress {
       172.18.8.100/32
    }

    notify_master /etc/keepalived/scripts/redis_master.sh
    notify_backup /etc/keepalived/scripts/redis_backup.sh
    notify_fault  /etc/keepalived/scripts/redis_fault.sh
    notify_stop   /etc/keepalived/scripts/redis_stop.sh

}

virtual_server 172.18.8.100 6379 {
    delay_loop 1
    lb_algo rr
    lb_kind DR #NAT
    #nat_mask 255.255.255.255
    persistence_timeout 50
    protocol TCP

    real_server 172.18.8.74 6379 {
        weight 1
        TCP_CHECK {
          connect_timeout 3
          nb_get_retry 3
          delay_before_retry 3
          connect_port 6379
        }
    }

    real_server 172.18.8.73 6379 {
        weight 1
        TCP_CHECK {
          connect_timeout 3
          nb_get_retry 3
          delay_before_retry 3
          connect_port 6379
        }
    }
}

正确的结果应该是：
当前启动主keepalived时候，虚拟主机IP应该被主机监听绑定，备机不绑定虚拟IP；当主机keepalived宕掉时，备机进行绑定VIP

1、为什么我keepalived主备都会监听虚拟IP？
#sudo ip a
都是输出：

root@ubuntu-lvs-74:/opt/lvs# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
   inet 172.18.8.100/32 brd 172.18.8.100 scope global lo:0
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 

/etc/sysctl.conf 设置了：
net.ipv4.ip_nonlocal_bind = 1

VIP设置如下,ifconfig：

root@ubuntu-lvs-74:/opt/lvs# ifconfig
eth0      Link encap:Ethernet  HWaddr 52:54:00:ee:21:49  
          inet addr:172.18.8.74  Bcast:172.18.8.127  Mask:255.255.255.128
          inet6 addr: fe80::5054:ff:feee:2149/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3038779 errors:0 dropped:1356 overruns:0 frame:0
          TX packets:564682 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:155424872 (155.4 MB)  TX bytes:39263783 (39.2 MB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:703904 errors:0 dropped:0 overruns:0 frame:0
          TX packets:703904 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:39418624 (39.4 MB)  TX bytes:39418624 (39.4 MB)

lo:0      Link encap:Local Loopback  
          inet addr:172.18.8.100  Mask:255.255.255.255
          UP LOOPBACK RUNNING  MTU:65536  Metric:1

请教，这是哪里出了问题了？

2、keepalived启动后，出现VRRP_Instance(VI_1) Now in FAULT state

Dec  6 21:01:43 ubuntu-lvs-74 Keepalived_healthcheckers[9801]: Netlink reflector reports IP fe80::5054:ff:feee:2149 added
Dec  6 21:01:43 ubuntu-lvs-74 Keepalived_healthcheckers[9801]: Registering Kernel netlink reflector
Dec  6 21:01:43 ubuntu-lvs-74 Keepalived_healthcheckers[9801]: Registering Kernel netlink command channel
Dec  6 21:01:43 ubuntu-lvs-74 Keepalived_healthcheckers[9801]: Opening file '/etc/keepalived/keepalived.conf'.
Dec  6 21:01:43 ubuntu-lvs-74 Keepalived_healthcheckers[9801]: Configuration is using : 13613 Bytes
Dec  6 21:01:43 ubuntu-lvs-74 Keepalived_healthcheckers[9801]: Using LinkWatch kernel netlink reflector...
Dec  6 21:01:43 ubuntu-lvs-74 Keepalived_healthcheckers[9801]: Activating healthchecker for service [172.18.8.74]:6379
Dec  6 21:01:43 ubuntu-lvs-74 Keepalived_healthcheckers[9801]: Activating healthchecker for service [172.18.8.73]:6379
Dec  6 21:01:44 ubuntu-lvs-74 Keepalived_vrrp[9802]: VRRP_Instance(VI_1) Now in FAULT state
Dec  6 21:01:44 ubuntu-lvs-74 Keepalived_vrrp[9802]: Opening script file /etc/keepalived/scripts/redis_fault.sh

route信息
Destination Gateway Genmask Flags Metric Ref Use Iface
default 172.18.8.1 0.0.0.0 UG 0 0 0 eth0
172.18.8.0 * 255.255.255.128 U 0 0 0 eth0
172.18.8.100 * 255.255.255.255 UH 0 0 0 lo

root@ubuntu-lvs-74:/opt/lvs# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  172.18.8.100:80 rr
  -> 172.18.8.73:80               Route   1      0          0         
  -> 172.18.8.74:80               Route   1      0          0         
TCP  172.18.8.100:6379 rr persistent 50
  -> 172.18.8.73:6379             Route   1      0          0         
  -> 172.18.8.74:6379             Route   1      0          0

VIP:172.18.8.100 ，在73,74之间可以互相ping通

请教，VRRP_Instance(VI_1) Now in FAULT state 可能是哪方面原因造成的？

[ljc007]

1、router_id 别重复 2、主机 state MASTER 备机 state BACKUP 3、lo0上的那个VIP是做心跳的，eth0上的VIP才是宕机之后做切换的