Now that we have configured the DNS settings for our subdomain, we can update our NGINX configuration files to bear the name of our domain.
In the /etc/nginx/sites-available and /etc/nginx/sites-enabled directories, update the names of the files to the corresponding FQDN (without the trailing period):
hobnob@hobnob:$ cd /etc/nginx/sites-available/hobnob@hobnob:$ sudo mv api api.hobnob.socialhobnob@hobnob:$ cd /etc/nginx/sites-enabled/hobnob@hobnob:$ sudo rm apihobnob@hobnob:$ sudo ln -s /etc/nginx/sites-available/api.hobnob.social \ /etc/nginx/sites-enabled/
Lastly, update the configuration file to include a server_name directive. For example, the api.hobnob.social server block now looks like this:
server { listen 80 default_server; ...
