In your DNS settings, from your domain provider, add all the A and AAAA records for the sub domains you want to use. So, when someone hits the port 443 using one of those domains, your Nginx Proxy Manager will decide which service to show to the client based on the domain.
how do I tell the machine to send piefed traffic to this subdomain
Configure your Nginx Proxy Manager. It should be using port 80 for HTTP, port 443 for HTTPS and another port for its WebUI (8081 is default, iirc).
So, if I type piefed.yourdomain.com in my address bar, the DNS tells my browser your IP, my browser hits your VPS on port 443, then Nginx Proxy Manager automatically sees that the user is requesting piefed, and will show me piefed.
For the SSL certificates, you can either generate a new certificate for every subdomain, or use a wild card certificate which can work on all subdomains.
In your DNS settings, from your domain provider, add all the A and AAAA records for the sub domains you want to use. So, when someone hits the port 443 using one of those domains, your Nginx Proxy Manager will decide which service to show to the client based on the domain.
Configure your Nginx Proxy Manager. It should be using port 80 for HTTP, port 443 for HTTPS and another port for its WebUI (8081 is default, iirc).
So, if I type piefed.yourdomain.com in my address bar, the DNS tells my browser your IP, my browser hits your VPS on port 443, then Nginx Proxy Manager automatically sees that the user is requesting piefed, and will show me piefed.
For the SSL certificates, you can either generate a new certificate for every subdomain, or use a wild card certificate which can work on all subdomains.