How to change the server's hostname from WHM

Introduction

How to change the server's hostname from WHM.

Procedure

1. Login to WHM as the root user
2. Navigate to: "Home / Networking Setup / Change Hostname"
3. Read the instructions on that page to avoid choosing a bad hostname
4. Enter your desired hostname into the box at the bottom of the page
5. Click the blue "Change" button

More details can be found here:

Change Hostname