Apache error “Could not reliably determine the server’s fully qualified domain name”

This is just a friendly warning and not really a problem (as in that something does not work).

If you go to:


and insert:

ServerName localhost   

and then restart apache by typing into the terminal:

sudo systemctl reload apache2

the notice will disappear.

If you have a name inside /etc/hostname you can also use that name instead of localhost

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