a2ensite equivalent in CentOS

Mimicking the Debian config system isn't difficult.

  1. In your Apache config, you have to include every *.conf file in /etc/httpd/sites-enabled with the directive Include sites-enabled/*.conf.
  2. Add the config to a *.conf file in /etc/httpd/sites-available.
  3. Activate the site in the config file by creating a link from the relevant file in /etc/httpd/sites-available into /etc/httpd/sites-enabled, which is basically the only thing that a2enable does on Debian.