Problem restart Apache "Could not reliably determine the server's fully qualified domain name"

Sering kali bagi sebagian pengguna pemula linux mengalami kebingungan ketika melakukan restart pada Apache

-- UBUNTU 14.04 --
riardian@server:/home/riardian# etc/init.d/apache2 restart

Pesan Error :

Restarting web server apache2
apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName
... waiting apache2:
Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName

Pesan error tersebut bukanlah kesalahan terhadap apache kita melainkan sebuah warning karena server kita belum melakukan seting FQDN (Fully Qualifed Domain Name) yaitu penamaan secara lengkap pada domain kita.

Solusi : 
1. Edit file berikut httpd.conf 
# vim /etc/apache2/httpd.conf 


2. Masukan perintah berikut
# echo "ServerName localhost" | sudo tee /etc/apache2/conf-available/fqdn.conf
# sudo a2enconf fqdn

3. restart Apache
 riardian@server:/home/riardian# etc/init.d/apache2 restart

- FIN -