Update the Hosts File
Next, you need to update the `/etc/hosts` file to reflect the new hostname. This file maps IP addresses to hostnames and is used by the system for hostname resolution. Open the file in a text editor:
sudo vi /etc/hosts
Find the line that starts with `127.0.0.1` (localhost) and update it to include your new hostname. For example:
127.0.0.1 localhost localhost.localdomain your-new-hostname
Replace `your-new-hostname` with the new hostname you’ve chosen. Save the file and exit the text editor.
How to Change Hostname on RHEL 9 (Red Hat Enterprise Linux 9)
Changing the hostname on RHEL 9 (Red Hat Enterprise Linux 9) is a fundamental task that can be accomplished with a few simple steps. In this detailed guide, we will walk you through each aspect of the process, ensuring that even beginners can understand and execute the procedure successfully.
Table of Content
- Step 1: Check the Current Hostname
- Step 2: Change the Hostname
- Step 3: Update the Hosts File
- Step 4: Apply the Changes
- Step 5: Verify the Changes
- How to Change Hostname on RHEL 9 (Red Hat Enterprise Linux 9) – FAQS