Test Domains for a NodeJS VPS Server

First, let's perform the preparatory manipulations. Buy two test domains from a registrar, or create two subdomains on a domain you already own. Further in the tutorial, I will refer to them as test1.com and test2.com, although your domain names will, of course, be different.

On the registrar's website, in the domain control panel, set the A-record for both test domains to the IP address of your VPS server.