feat(terraform): write provisioned IPv4 into dynamic ansible inventory

terraform/main.tf

@@ -1,5 +1,4 @@
-## DATA SOURCES
-
+# Gather facts
 data "ovh_cloud_instance_flavors" "flavors" {
   service_name = var.ovh_service_name
   region       = var.ovh_region
@@ -10,15 +9,13 @@ data "ovh_cloud_instance_images" "images" {
   region       = var.ovh_region
 }
 
-## RESOURCES
-
 resource "ovh_cloud_ssh_key" "ansible" {
   service_name = var.ovh_service_name
   name         = "ansible-key"
   public_key   = var.ssh_public_key
 }
 
-# Provision the d2-2 Public Cloud Instance
+# Provision a d2-2 Public Cloud instance
 resource "ovh_cloud_instance" "coolify" {
   service_name   = var.ovh_service_name
   region         = var.ovh_region
@@ -40,14 +37,25 @@ resource "ovh_cloud_instance" "coolify" {
   ]
 }
 
-## OUTPUTS
-
-output "public_ip" {
-  description = "The public IPv4 address of the provisioned OVHcloud VM"
-  value = one(flatten([
+# Fetch provisioned VM's public IPv4
+locals {
+  public_ip = one(flatten([
     for net in ovh_cloud_instance.coolify.current_state.networks : [
       for addr in net.addresses : addr.ip
       if addr.type == "FIXED" && addr.version == 4
     ]
   ]))
 }
+
+# Write IP to Ansible inventory
+resource "local_file" "ansible_inventory" {
+  content = templatefile("${path.module}/../ansible/inventory.tpl", {
+    public_ip = local.public_ip
+  })
+  filename = "${path.module}/../ansible/inventory.ini"
+}
+
+output "public_ip" {
+  description = "The public IPv4 address of the provisioned OVHcloud VM"
+  value       = local.public_ip
+}