1.编辑/etc/sysconfig/network

[root@localhost  ~]# vi /etc/sysconfig/network

NETWORKING=yes

HOSTNAME=hadoop-01

2.hostname直接命名

[root@localhost  ~]#hostname hadoop-01

3.编辑/etc/hosts

[root@localhost ~]# cat /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4

::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.137.130 hadoop-01