If you’re working on Ubuntu and running Apache, you probably have seen this error when rebooting Apache. It says “could not reliably determine the server’s fully qualified domain name.” There’s a simple fix to this configuration issue.
You’ll need to edit the /etc/apache2/httpd.conf config file:
sudo nano /etc/apache2/httpd.conf
and add this entry:
sudo /etc/init.d/apache2 restart
The error is now gone.