If you made some changes in "ports.conf" file and when restarting the apache server getting the below error:
prafulkmr@Blackpanther:~$ sudo /etc/init.d/apache2 restart sudo: unable to resolve host Blackpanther * Restarting web server apache2 AH00112: Warning: DocumentRoot [/var/www/html] does not exist AH00557: apache2: apr_sockaddr_info_get() failed for Blackpanther AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1. Set the 'ServerName' directive globally to suppress this message
A 3 step guide will help you to resolve this issue. You just need to follow the below step and edit the "ports.conf" file and add the below line as suggested. Restart the apache server and error will gone.
Step 1: Open ports.conf file : sudo vim /etc/apache2/ports.conf
Step 2: Add below line in th ports.conf file: ServerName localhost press "esc" and "colon ie : " Write wq - it will Save and exit your ports.conf file.
Step 3: Restart apache server: prafulkmr@Blackpanther:~$ sudo /etc/init.d/apache2 restart sudo: unable to resolve host Blackpanther * Restarting web server apache2 [ OK ]
All done, now you will not get"apr_sockaddr_info_get() failed" error anymore.