You can use any of the following ways to setup a new host name for RHEL 7 servers
Using hostnamectl command
You can set the hostname of RHEL using the hostnamectl command.
Step1: View the current hostname
hostnamectl status
step2: Set the hostname using the following commands. One for static hostname and other for pretty hostname.
hostnamectl set-hostname [your-hostname-here]
hostnamectl set-hostname "[your hostname with spces]"
For example,
hostnamectl set-hostname devopscube #static hostname
hostnamectl set-hostname "DevOpsCube Labs" #pretty hostname
Step 3: Now you can check the changed hostnames using the following command.
hostnamectl
A sample output is shown below.
[devopscube@demo ~]$ hostnamectl
Static hostname: devopscube
Pretty hostname: DevOpsCube Labs
Icon name: computer-vm
Chassis: vm
Machine ID: b7cd503ff56bf007dd3e3612482bb2aa
Boot ID: 5eab5023f20640c8855a15e10cad767f
Virtualization: kvm
Operating System: Red Hat Enterprise Linux Server 7.4 (Maipo)
CPE OS Name: cpe:/o:redhat:enterprise_linux:7.4:GA:server
Kernel: Linux 3.10.0-693.1.1.el7.x86_64
Architecture: x86-64
Using nmcli command
nmcli is a networkmanager command. You can manage the hostname of the system using nmcli.
Step1: You can view the current hostname using the following command.
nmcli general hostname
Step 2: Use the following nmcli command for setting up the new hostname.
nmcli general hostname [your-hostname-here]
For example,
nmcli general hostname devopscube
Step 3: Restart the hostnamed service
service systemd-hostnamed restart
Using nmtui command
nmtui command will let you set the hostname using the GUI.
Just execute the following command and it will guide you through the process of setting up a new hostname.
sudo nmtui
An example GUI window,
