It depends on whether you want to delegate hosting the subdomain off to a different DNS server (or to the same server, but in a different zone file). You delegate a zone when you want some other entity to control it, such as a different IT department or organization. If you do, then you need … Read more
If you have installed the nginx package from the Ubuntu repositories, you will have two directories. /etc/nginx/sites-enabled and /etc/nginx/sites-available. In the main nginx configuration, /etc/nginx/nginx.conf, you have the following line: include /etc/nginx/sites-enabled/*.conf; So basically to list all available virtualhosts, you can run the following command: ls /etc/nginx/sites-available To activate one of them, run the following … Read more