A hostname should be useful and memorable. It needs to be 64 characters or less and can only contain alphanumeric characters and dashes. There’s a wide range of opinions out there on what constitutes a good name. Some people like to name systems after famous scientists, or chemical elements, or fantasy references and sometimes administrators in organizations will use some kind of notation that describes a lot of information about the server and even its location, encoded in a way that makes sense to somebody.
in Linux, hostnames are stored in
/etc/hostname file. Hostname’s can be alpha numeric i.e.
[a-zA-Z0-9] with a single dash[-] set hostname with
hostnamectl --static set-hostname 'your desired name here'
hostnamectl --static set-hostname 9to5host
to know the hostname of a server, type hostname
Technical content writer at 9to5host.com, Linux is Life 😉