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在Oracle Linux7中怎麼配置hostname?

在Oracle Linux7中怎麼配置hostname?
來源於:
How to Configure hostname in Oracle Linux 7 (文檔 ID 2049221.1)

適用於:
Linux OS - Version Oracle Linux 7.0 and later
Linux x86
Linux x86-64

目標:
本文描述了在Oracle Linux7中修改hostname的方法
注意:手工在/etc/sysconfig/network中追加"HOSTNAME=xxxxx"並重啟os,這個方法在Oracle Linux7中是不生效的。

解決方案:
請使用如下三種方法的任何一種來修改Oracle Linux7中的主機名

1. use hostname control utility: hsotnamectl
2. use NetworkManager command line tool: nmcli
3. edit /etc/hostname file directly (a reboot afterwards is required)

 

1. Use hsotnamectl which is a command-line client to systemd-hostnamed service

Get current hostname status:

[root@localhost ~]# hostnamectl status
   Static hostname: localhost.localdomain
         Icon name: computer
           Chassis: n/a
        Machine ID: ed264df49f3f42b7b64ca75f763ad117
           Boot ID: 3ec1705218b9499b9619e1bdca7be737
    Virtualization: oracle
  Operating System: Oracle Linux Server 7.1
       CPE OS Name: cpe:/o:oracle:linux:7:1
            Kernel: Linux 3.8.13-55.1.6.el7uek.x86_64
      Architecture: x86_64


Set hostname:

[root@localhost ~]# hostnamectl set-hostname oraclelinux.oracle.com
[root@localhost ~]#


Re-login terminal session:

[root@oraclelinux ~]# hostnamectl status
   Static hostname: oraclelinux.oracle.com
         Icon name: computer
           Chassis: n/a
        Machine ID: ed264df49f3f42b7b64ca75f763ad117
           Boot ID: 3ec1705218b9499b9619e1bdca7be737
    Virtualization: oracle
  Operating System: Oracle Linux Server 7.1
       CPE OS Name: cpe:/o:oracle:linux:7:1
            Kernel: Linux 3.8.13-55.1.6.el7uek.x86_64
      Architecture: x86_64

2. nmcli

Check current hostname:

[root@localhost ~]# nmcli general hostname
localhost.localdomain

 

Modify hostname and restart ystemd-hostnamed service:

[root@localhost ~]# nmcli general hostname oraclelinux.oracle.com
[root@localhost ~]# systemctl restart systemd-hostnamed


Re-login terminal session:

[root@oraclelinux ~]# hostname
oraclelinux.oracle.com

 

3. Edit /etc/hostname

View current content:

[root@localhost ~]# cat /etc/hostname
localhost.localdomain


Replace file content with new hostname:

[root@localhost ~]# echo "oraclelinux.oracle.com" > /etc/hostname
[root@localhost ~]# cat /etc/hostname
oraclelinux.oracle.com


Restart system and verify:

[root@oraclelinux ~]# hostname
oraclelinux.oracle.com
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