An A entry points a hostname or domain to an IP address, which allows other computers to find your server on the Internet.
Newly-installed servers without a resolvable fully-qualified domain name as a hostname will automatically receive one from cPanel, L.L.C.
This interface allows you to change your server's hostname.
The workaround scripts for the dhclient script may interfere with WHM's Change Hostname feature, which causes hostname configuration issues and a locked cPanel & WHM license.
This script updates the server's hostname and performs all of the necessary actions to apply this change throughout the system.