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As we are creating our instances on the fly, using Terraform declarative scripts, we can also need to create dns domains and records. Let’s say, you have two environments: dev and prod, and you you want to have your backend application stored under dev.api.myapp.com and prod.api.myapp.com. Luckily, terraform allows to do such things

Required steps

• Digitalocean account
• Ready and bought domain somewhere
• Already defined terraform instances. See article from previous part.

Digital Ocean Domain

Add additional declaration to your terraform file:

resource "digitalocean_domain" "default" {
   name = "dev.api.myapp.com"
   ip_address = "${digitalocean_droplet.app-rest-api.ipv4_address}"
}

DigitalOcean Record

If you want your app to be accessible through dev.api.myapp.com, without wwwm you should add this lines:

resource "digitalocean_record" "CNAME-www" {
  domain = "${digitalocean_domain.default.name}"
  type = "CNAME"
  name = "www"
  value = "@"
}

Final Check

You should see your domain name in the list of networking domains here - https://cloud.digitalocean.com/networking/domains

On the next part we will see how to start working with cloud instances using ansible, and how to connect ansible with terraform.