利用codis-ha使用codis 实例故障转移

前题：go环境已经配好；codis-proxy、codis-server、codis-config已开启
codis-server instance:

[root@lvtu codis-ha]# netstat -ntlp|grep codis
tcp        0      0 0.0.0.0:6389                0.0.0.0:* LISTEN      14181/./codis-serve
tcp        0      0 0.0.0.0:6399                0.0.0.0:* LISTEN      14185/./codis-serve
tcp        0      0 0.0.0.0:6379                0.0.0.0:* LISTEN      14177/./codis-serve

codis-ha安装与服务开启：

[root@lvtu ~]# go get github.com/ngaut/codis-ha
[root@lvtu ~]# cd /usr/local/codis/src/github.com/ngaut/
[root@lvtu ngaut]# cd codis-ha/
[root@lvtu codis-ha]# nohup ./codis-ha --codis-config=localhost:18087 --productName=test & //启动codis-ha

故障切换前：


kill 掉 master redis实例进程

[root@lvtu codis]# kill -9 14177
[root@lvtu codis-ha]# tail -f nohup.out
2016/05/14 23:05:20 servergroup.go:110: [warning] server maybe crashed {
  "type": "master",
  "group_id": 1,
  "addr": "192.168.23.150:6379"
}
2016/05/14 23:05:20 servergroup.go:65: [info] try promote {
  "type": "slave",
  "group_id": 1,
  "addr": "192.168.23.150:6389"
}

切换截图：