How to Set or Change Hostname on AlmaLinux 10

To change hostname on AlmaLinux 10, follow the steps below:

Step 1 : Check the Current Hostname

Run the following command to view your existing hostname:

hostname

Step 2 : Set a New Hostname

Use hostnamectl to change the hostname. Replace server-01 with the name you want:

sudo hostnamectl set-hostname server-01

Step 3 : Verify the Hostname

Check if the new hostname is correctly updated:

cat /etc/hostname

Step 4 : Update the /etc/hosts File

Open the hosts file to ensure your new hostname is mapped properly:

sudo nano /etc/hosts

Update the line containing the old hostname, for example:

127.0.0.1   localhost server-01

Step 5 : Reboot the Server

Restart the system to apply the changes:

sudo reboot

Congratulations! You have successfully changed the hostname on AlmaLinux 10 and updated all necessary configurations.