Two Rails projects on two different droplets with single domain

Question

Is it possible to use one domain for two Rails projects on two different droplets?

I have two droplets (DigitaOcean) with two different Rails 5 projects (ubuntu 18, nginx, puma). One for the website and another for API (backend for mobile app).

I mean that I want to buy example.com domain. After that, I want to use example.com for website and api.example.com for API.

I think that I should make some work with nginx config? Should I use private IP? Which droplet should process traffic depending on url?

Answer 1

You don't have to worry about nginx config, domain handling or smth else by the server. All you need to do in this case is create 2 droplets: website droplet with IP 1 API droplet with IP2

then in your DNS manager (DigitalOcean or somewhere else where your nameservers are pointing) add A records:

example.com to IP1
(optional) www.example.com CNAME to example.com
api.example.com to IP2

No smart or complex configuration needed :)