[root@ecs-5611 ~]# cat /etc/hosts | nl 1 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 2 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 3 127.0.0.1 ecs-5613 ecs-5613 4 192.168.0.82 node-1 5 192.168.0.228 node-2 6 192.168.0.135 node-3