how to setup host name in Linux version 7 RHEL 7/Centos 7

In Redhat Enterprise Linux 5 and version 6 we have to edit file located in /etc/sysconfig/network but in Redhat Enterprise Linux 7 and Centos 7 no need to edit that config file we can directly change hostname using below commands how to setup host name in Linux version 7

1. hostnamectl
2. nmtui
3. nmcli

in Redhat Enterprise Linux 7 there are three types of names we can assign, they are below

pretty – pretty option is used to set the name which may contain limited special characters

transient – this name we can use as temporary name whenever we exit from the session this name will go off

static – Static name is the permanent name for the host

Note that the pretty hostname has little restrictions on the characters used, while the static and transient host names are limited to the usually accepted characters of Internet domain names.

How to setup an hostname using hostnamectl command

[root@Arkit-SRV1 ~]# hostnamectl status
 Static hostname: Arkit-SRV1
 Icon name: computer
 Chassis: n/a
 Machine ID: 41384f19fc57477680b0c7942ff29eb3
 Boot ID: 11a7b1d4fd7f44f9b486e3ea0119e49d
 Virtualization: vmware
 Operating System: Red Hat Enterprise Linux Server 7.1 (Maipo)
 CPE OS Name: cpe:/o:redhat:enterprise_linux:7.1:GA:server
 Kernel: Linux 3.10.0-229.el7.x86_64
 Architecture: x86_64

[root@Arkit-SRV1 ~]# hostnamectl set-hostname "This is ARKTI's website" --pretty

[root@Arkit-SRV1 ~]# hostnamectl status
 Static hostname: Arkit-SRV1
 Pretty hostname: This is ARKTI's website
 Icon name: computer
 Chassis: n/a
 Machine ID: 41384f19fc57477680b0c7942ff29eb3
 Boot ID: 11a7b1d4fd7f44f9b486e3ea0119e49d
 Virtualization: vmware
 Operating System: Red Hat Enterprise Linux Server 7.1 (Maipo)
 CPE OS Name: cpe:/o:redhat:enterprise_linux:7.1:GA:server
 Kernel: Linux 3.10.0-229.el7.x86_64
 Architecture: x86_64

as you can see above screen pretty name is changed

[root@Arkit-SRV1 ~]# hostnamectl set-hostname arkit-server --static
[root@Arkit-SRV1 ~]# hostname
arkit-server

see the above example hostname has been changed as mentioned as static

Static name can also be changed using config file

[root@Arkit-SRV1 ~]# cat /etc/hostname
arkit-server

edit /etc/hostname file and write your hostname which will be permanent and static name for your server

[root@Arkit-SRV1 ~]# hostnamectl set-hostname arkit-temphostname --transient
[root@Arkit-SRV1 ~]# hostnamectl
 Static hostname: arkit-server
 Pretty hostname: This is ARKTI's website
Transient hostname: arkit-temphostname  <<temp name has been updated
 Icon name: computer
 Chassis: n/a
 Machine ID: 41384f19fc57477680b0c7942ff29eb3
 Boot ID: 11a7b1d4fd7f44f9b486e3ea0119e49d
 Virtualization: vmware
 Operating System: Red Hat Enterprise Linux Server 7.1 (Maipo)
 CPE OS Name: cpe:/o:redhat:enterprise_linux:7.1:GA:server
 Kernel: Linux 3.10.0-229.el7.x86_64
 Architecture: x86_64

Setup Hostname Using nmtui Command

[root@Arkit-SRV1 ~]# nmtui

select ‘Set system hostname’

Click on OK

Provide your hostname and click ok

it will show the hostname for your confirmation click on OK

go and verify your hostname using ‘hostname‘ and ‘hostnamectl status‘ commands

Changing the hostname using nmcli command

[root@Arkit-SRV1 ~]# nmcli general hostname Arkit-SRV1
[root@Arkit-SRV1 ~]# hostname
Arkit-SRV1
[root@Arkit-SRV1 ~]# systemctl restart systemd-hostnamed.service

change your hostname as shown above example and restart the systemd-hostnamed service to effect newly changed hostname.

That’s about the hostname change in RHEL 7 version and Centos 7 version how to setup host name in Linux version 7 how to setup host name in Linux version 7 how to setup host name in Linux version 7 how to setup host name in Linux version 7 how to setup host name in Linux version 7 how to setup host name in Linux version 7

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