@marti149

I would recommend setting up multiple server blocks. If you already have one working for the primary domain, you can use it as a basis as not much needs to be changed.

When it comes to setting up domains, the primary two directives that you’d need to change would be server_name and root. The first defines what domain, or sub-domain, a request is processed for and the second defines the web root for said domain or sub-domain.

So if you have:

server {
    listen 80;
    listen [::]:80;
    server_name domain.com www.domain.com;

    root /path/to/domain.com/;

    location / {
        try_files $uri $uri/ /index.html;
    }
}

You’d simply take that and change it over to:

server {
    listen 80;
    listen [::]:80;
    server_name sub.domain.com www.sub.domain.com;

    root /path/to/sub.domain.com/;

    location / {
        try_files $uri $uri/ /index.html;
    }
}

Or if you wanted to add another domain:

server {
    listen 80;
    listen [::]:80;
    server_name domain2.com www.domain2.com;

    root /path/to/domain2.com/;

    location / {
        try_files $uri $uri/ /index.html;
    }
}

That’s just basic configuration though and will only support HTML files. If you need to use PHP, proxy to a NodeJS application, etc, then there would be slightly more configuration needed.