How to set up hostname and hostname --fqdn
hostname is required for knowing the name of a computer (e.g.
starz), used by log service for example and
hostname --fqdn is hostname with fully qualified domain name (
starz.myrtana.sk) which is required by several system services like bind and mariadb.
FQDN error message
$ hostname --fqdn hostname: Temporary failure in name resolution
Set up hostname
$ cat /etc/hostname starz
Set up hostname --fqdn
The best way to set hostname with fully qualified domain is in
/etc/hosts. I was able to define it in DNS server bind before, but after system upgrade bind itself required
hostname --fqdn to work...
$ cat /etc/hosts 127.0.0.1 localhost 127.0.1.1 starz.myrtana.sk starz
A reboot is required after adding a hostname. "starz" on 127.0.1.1 line must match hostname in
/etc/hostname, i.e. keep the names the same. More info can be found in
man 5 hosts.