By convention the hostname for the Address Manager server and the DNS/DHCP Server is a Fully Qualified Domain Name (FQDN).
Note: You cannot change the hostname of DNS/DHCP Servers that are part of a functioning XHA pair. Ensure you have properly configured the hostname and other system settings before creating an XHA pair.
To set the hostname:
Type configure system and press
Adonis> configure system
Run the set hostname command.
Adonis:configure:system> set hostname <hostname.example.com>
Save your changes.