在Oracle Linux7中怎么配置hostname？

在Oracle Linux7中怎么配置hostname？

在Oracle Linux7中怎么配置hostname？
来源于：
How to Configure hostname in Oracle Linux 7 (文档 ID 2049221.1)

适用于：
Linux OS - Version Oracle Linux 7.0 and later
Linux x86
Linux x86-64

目标：
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"并重启os，这个方法在Oracle Linux7中是不生效的。

解决方案：
请使用如下三种方法的任何一种来修改Oracle Linux7中的主机名

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:

[[email protected] ~]# 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:

[[email protected] ~]# hostnamectl set-hostname oraclelinux.oracle.com
[[email protected] ~]#

Re-login terminal session:

[[email protected] ~]# 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:

[[email protected] ~]# nmcli general hostname
localhost.localdomain

 

Modify hostname and restart ystemd-hostnamed service:

[[email protected] ~]# nmcli general hostname oraclelinux.oracle.com
[[email protected] ~]# systemctl restart systemd-hostnamed

Re-login terminal session:

[[email protected] ~]# hostname
oraclelinux.oracle.com

 

3. Edit /etc/hostname

View current content:

[[email protected] ~]# cat /etc/hostname
localhost.localdomain

Replace file content with new hostname:

[[email protected] ~]# echo "oraclelinux.oracle.com" > /etc/hostname
[[email protected] ~]# cat /etc/hostname
oraclelinux.oracle.com

Restart system and verify:

[[email protected] ~]# hostname
oraclelinux.oracle.com