memcached.service 处于活动状态，但在 haproxy 网页中它们已关闭

Question

三个节点memcached.service活跃(运行):

[root@ha-node3 my.cnf.d]# systemctl status   memcached.service
● memcached.service - memcached daemon
   Loaded: loaded (/usr/lib/systemd/system/memcached.service; enabled; vendor preset: disabled)
   Active: active (running) since Wed 2017-08-02 01:01:29 CST; 6min ago
 Main PID: 13329 (memcached)
   CGroup: /system.slice/memcached.service
           └─13329 /usr/bin/memcached -p 11211 -u memcached -m 1024 -c 8192 -l 127.0.0.1,::1,10.10.0.101 -t 4 -I 10m

Aug 02 01:01:29 ha-node3 systemd[1]: Started memcached daemon.
Aug 02 01:01:29 ha-node3 systemd[1]: Starting memcached daemon...

但是在haproxy web中，三个节点都挂了。

EDIT-1

发现Memcache_Servers配置的/etc/haproxy/haproxy.cfg端口是22122（我写错了），所以改成11211，重启haproxy，但还是不行。

listen Memcache_Servers
  bind 45.117.40.168:11211
  balance roundrobin
  mode   tcp
  option  tcpka
  server ha-node1 ha-node1:11211 check inter 10s fastinter 2s downinter 2s rise 30 fall 3
  server ha-node2 ha-node2:11211 check inter 10s fastinter 2s downinter 2s rise 30 fall 3
  server ha-node3 ha-node3:11211 check inter 10s fastinter 2s downinter 2s rise 30 fall 3

Answer 1

最后，我发现我的hosts中的ip是这样的：

[root@ha-node1 sysconfig]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.8.101 ha-node1 ha-node1.aa.com
192.168.8.102 ha-node2 ha-node2.aa.com
192.168.8.103 ha-node3 ha-node3.aa.com
45.117.40.168 ha-vhost devops.aa.com
192.168.8.104 nfs-backend backend.aa.com

但是我的/etc/sysconfig/memcached里面的ip不是之前hosts的ip，所以改成了hosts里面的ip，大家看下图：

现在我重启了memcached和haproxy，现在可以正常使用了。

memcached.service 处于活动状态，但在 haproxy 网页中它们已关闭

memcached.service is active, but in the haproxy web page they are down

memcached

haproxy