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

Question

I have just installed Apache 2.2.17, and I am using it first time.

Now when I try to start the server using the command service httpd start it gives me

Answer 1

FQDN means the resolved name over DNS. It should be like "server-name.search-domain".

The warning you get just provides a notice that httpd can not find a FQDN, so it might not work right to handle a name-based virtual host. So make sure the expected FQDN is registered in your DNS server, or manually add the entry in /etc/hosts which is prior to hitting DNS.