centos7修改主机名

centos修改主机名

1、临时修改，重启失效

[root@centos17 ~]# hostname abc
[root@centos17 ~]# hostname
abc

　　

2、永久修改，修改配置文件，重启生效

[root@centos17 ~]# cat /etc/hostname
centos17

 

修改主机hosts文件，用域名替代ip

[root@centos17 ~]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
[root@centos17 ~]#