How to Set or Change Hostname in CentOS/RHEL 7/8
A computer hostname represents a unique name that gets assigned to a computer in a network in order to uniquely identify that computer in that
hostnamectl
RHCSA Series: Securing SSH, Setting Hostname and Enabling Network Services – Part 8
As a system administrator you will often have to log on to remote systems to perform a variety of administration tasks using a terminal emulator.