Nginx Reverse Proxy Configuration Guide

1. Create a subdomain.domain.tld file under /etc/nginx/sites-available using the following:

server {
	server_name  subdomain.domain.tld;
 
	location / {
		proxy_pass            http://127.0.0.1:DOCKERPORT;
		proxy_set_header      Host $host;
		proxy_set_header      X-Real-IP $remote_addr;
		proxy_set_header      X-Forwarded-For $proxy_add_x_forwarded_for;
		proxy_set_header      Upgrade $http_upgrade;
		proxy_set_header      Connection "Upgrade";
	}
 
	access_log /var/log/nginx/subdomain.domain.tld-access.log;
	error_log  /var/log/nginx/subdomain.domain.tld-error.log;
 
}
 

2. Symlink to /etc/nginx/sites-enabled with the following command:

cd ../sites-enabled/
sudo ln -s ../sites-available/subdomain.domain.tld subdomain.domain.tld

3. Test nginx config:

sudo nginx -t

4. If that passes, reload nginx:

sudo systemctl reload nginx

5. Generate certs:

sudo certbot --nginx -d subdomain.domain.tld