How to Change Hostname on AlmaLinux

Introduction

The hostname is a unique identifier assigned to every computer or device connected to a network. It facilitates seamless communication between systems within the same network.

Prerequisites

Ensure you have administrative privileges or are logged in as the root user.

Temporarily Changing the Hostname

1. Launch terminal
2. Verify current hostname:

hostname

3. Change hostname temporarily:

sudo hostname new-hostname

Permanently Changing the Hostname

1. Edit /etc/hostname:

sudo nano /etc/hostname

2. Edit /etc/hosts:

sudo nano /etc/hosts

3. Reboot system:

sudo reboot

Using Hostnamectl Utility

1. Change static hostname:

sudo hostnamectl set-hostname new-hostname

2. Change transient hostname:

sudo hostnamectl set-hostname --pretty new-hostname

3. Verify changes:

hostnamectl

Conclusion

Changing the hostname on AlmaLinux is straightforward using various methods like hostname command, configuration files, or hostnamectl utility.