ArticCon 2022 (continued)

modules

You can bundle up multiple resources into “modules”, substituting the values provider as variables.

our previous example becomes;

# main.tf
resource "google_compute_subnetwork" "network-with-private-secondary-ip-ranges" {
  name          = var.name
  ip_cidr_range = var.subnet
  region        = var.region
  network       = var.network
  secondary_ip_range {
    range_name    = var.name_two
    ip_cidr_range = var.subnet_two
  }
}

It also allows setting default values.

# variables.tf
variable "region" {
  type = string
  default = "us-west1"
}

This is great for coming up with code re-use in the form of cookie-cutter templates.