Configuring Subdomains Apache

Pre-requisites:

Create DNS records.

• One A DNS Record for *.domain.com
• One A DNS Record for domain.com

Configuring sub-domain

Apache’s main web folder is /var/www/. There should already be the folder html in here. For this example, we’ll pretend we want to make the subdomain: test.example.com.

• First, you’ll want to create a directory in /var/www/ called “test” using mkdir -p /var/www/test/.
• Next, you’ll want to go to: /etc/apache2/sites-available/. In here there is a file called 000-default.conf. You will want to copy this file in the same directory, and name it: test.example.com.conf in our case.
• In this file, you’ll want to have the following code:

ServerAdmin webmaster@test.example.com
  ServerName test.example.com
  DocumentRoot /var/www/test
  <Directory /var/www/test/>
      Options Indexes FollowSymLinks
      AllowOverride All
      Require all granted
  </Directory>
  ErrorLog /error.log
  CustomLog /access.log combined

• Then you’ll want to enable the subdomain: a2ensite test.example.com.conf
• Finally, you’ll want to do a reload on the apache service to make sure the changes come through. systemctl reload apache2

Now you should be good to go with your new subdomain!