Could not reliably determine the server's fully qualified domain name

Error:... waiting ^[[Aapache2: apr_sockaddr_info_get() failed for ubuntu
apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName

 

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After the initial install of Apache server, I got the following error while restarting the Apache service on Ubuntu 12.0

The solution is really simple, just add ServerName directive to /etc/apache2/httpd.conf

sudo nano /etc/apache2/httpd.conf

Add: ServerName localhost

Finally restart the Apache server: sudo /etc/init.d/apache2 restart