Starting httpd: httpd: Could not reliably determine the server’s fully qualified domain name, using for ServerName Linux [Redhat, Fedora, CentOS]

It’s because your server-name is missing in httpd.conf file..


sudo vim /etc/apache2/httpd.conf
Insert the following line at the httpd.conf: ServerName localhost
Just restart the Apache: sudo /etc/init.d/apache2 restart

if you don’t have httpd.conf under /etc/apache2, you should have apache2.conf – simply add following line

or

if you have installed httpd in installation directory then edit /etc/httpd/conf/httpd.conf and add following line in the file.

ServerName localhost

then restart apache2/httpd service