Chapter 21 - Remote state with two projects

Referencing another state in another project

Overview

This is when you have some resources managed by one Terraform state file and you want to reference those resources in a completely separate project.

Terraform Project 1:

RG, Vnet, Subnet, NICs, Public IP

Terraform Project 2:

Virtual Machine

# Terraform Remote State Datasource
data "terraform_remote_state" "project1" {
  backend = "azurerm"
  config = {
    resource_group_name   = "terraform-p1-storage-rg"
    storage_account_name  = "terraformstatep1"
    container_name        = "tfstatefiles"
    key                   = "network-terraform.tfstate"
  }
}

## VM resource block
# Resource: Azure Linux Virtual Machine
resource "azurerm_linux_virtual_machine" "mylinuxvm" {
  name                = local.vm_name
  computer_name       = local.vm_name # Hostname of the VM
  size                = "Standard_DS1_v2"
  admin_username      = "azureuser"
  #resource_group_name = azurerm_resource_group.myrg.name
  #location            = azurerm_resource_group.myrg.location
  # Getting Data using Terraform Remote State Datasource from Project-1
  resource_group_name = data.terraform_remote_state.project1.outputs.resource_group_name
  location = data.terraform_remote_state.project1.outputs.resource_group_location
  # Getting the network interface IDs from the files in project 1
  network_interface_ids = [data.terraform_remote_state.project1.outputs.network_interface_id]
  admin_ssh_key {

Overview​

Overview