Linux 修改主机名称

查看服务器版本信息

1. cat /proc/version

[root@hm01 ~]# cat /proc/version
Linux version 3.10.0-327.el7.x86_64 ([email protected]) (gcc version 4.8.3 20140911 (Red Hat 4.8.3-9) (GCC) ) #1 SMP Thu Nov 19 22:10:57 UTC 2015

2. uname -a

[root@hm01 ~]# uname -a
Linux eis_db 3.10.0-327.el7.x86_64 #1 SMP Thu Nov 19 22:10:57 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

3. lsb_release -a

[root@hm01 ~]#  lsb_release -a
LSB Version:    :core-4.1-amd64:core-4.1-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-4.1-amd64:desktop-4.1-noarch:languages-4.1-amd64:languages-4.1-noarch:printing-4.1-amd64:printing-4.1-noarch
Distributor ID: CentOS
Description:    CentOS Linux release 7.2.1511 (Core)
Release:        7.2.1511
Codename:       Core

···

修改服务器主机名称

第一步： 添加或修改HOSTNAME的值

[root@hm01 ~]# vi /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=DB01

第二步 添加IP与主机名的映射

[root@hm01 ~]# vi /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
127.0.0.1   DB01
196.1.1.129 DB01

第三步： 修改/etc/hostname

[root@hm01 ~]# vim /etc/hostname
DB01

第四步： 重启服务

[root@hm01 ~]# hostname DB01
[root@hm01 ~]# reboot