Changing the hostname of an authoritative or a recursive (caching) server may not necessarily be a DNS issue (per se), but, as a rule of thumb, the hostname of your system is inextricably linked to the DNS as a function of the overall system in question; for this reason, we will now review the procedure to change the hostname of the host system.

To review the current hostname, you can use the following syntax:

# hostnamectl status

However, you can choose to view the static, transient, or pretty name with one of the following commands:

# hostnamectl status --static
# hostnamectl status --transient
# hostnamectl status --pretty

Based on this, to change the hostname you should use the following command:

# hostnamectl set-hostname <new-host-name>

Alternatively, you can choose to update the static hostname with this:

# hostnamectl --static set-hostname <new-host-name>

Having completed this action, the hostname change will be applied to the...