centos7修改主机名

• 首先我们需要先把centos的网络配置文件，/etc/sysconfig/network 把hostname栏目修改

[[email protected] ~]# vi /etc/sysconfig/network
[[email protected] ~]# cat /etc/sysconfig/network
# Created by anaconda

HOSTNAME=hm01

• 修改/etc/hosts文件

vi /etc/hosts
127.0.0.1    localhost.localdomain  #修改localhost.localdomain为orcl1

• 快捷修改vi /etc/hostname

[[email protected] ~]# cat /etc/hostname 
hm01
[[email protected] ~]# ^C

• 重启电脑
  shutdown -r now 或者 reboot

[[email protected] ~]# hostname
hm01
[[email protected] ~]# ^C
[[email protected] ~]#