127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

172.16.211.249 dev
172.16.211.246 javadev
172.16.211.247 freeswitch
172.16.211.246 redis-sentinel
172.16.211.250 redis-cluster
172.16.211.246 etcd
172.16.211.248 mysql 
172.16.211.250 rabbitmq
172.16.211.247 zabbix

172.16.211.248 k8s-master
172.16.211.248 registry

172.16.211.246 k8s-node-1
172.16.211.247 k8s-node-2

172.16.211.250 etcdv2