Terraform gcp get internal private ip of instance and write to file

Question

Working on the following example github i am trying to add a static internal ip value to terraform ( so instance will run with specific internal ip ) or at least get the internal ip of the instance so i can write it in the internal file of the instance.

Any suggestion or thoughts on this one?

Thank you in advance.

Answer 1

You might like to check how terraform works with an IP address resource

A particulare example (from the top of my head, assuming that the su.network ( my_su.net ) is created in the same terraform batch):

resource "google_compute_address" "my_internal_ip_addr" {
  project      = "my_target_project_id"
  address_type = "INTERNAL"
  region       = "my_region"
  subnetwork   = data.google_compute_subnetwork.my_subnet.name
  name         = "my_ip_address_name"
  description  = "An internal IP address for my VM"
}

and for a compute engine (ony relevant elements):

resource "google_compute_instance" "my_vm" {
  project      = "my_target_project_id"
  name         = "my_vm"

  # other items omitted

  network_interface {
    subnetwork         = data.google_compute_subnetwork.my_subnet.name
    subnetwork_project = "my_target_project_id"
    network_ip         = google_compute_address.my_internal_ip_addr.address

    access_config {
      # Include this section to give the VM an external IP address
    }
  }

  # other items omitted
}

However, I don't know if the above can help you with your ultimate requirement to i can write it in the internal file of the instance and why you need that.