tested n8n template

terraform/modules/proxmox_ansible_inventory/main.tf

@@ -0,0 +1,26 @@
+locals {
+  inventory = {
+    all = {
+      vars = {
+        ansible_user = "cloud"
+      }
+      children = {
+        for svc in distinct([for k, v in var.instances : v.service_name]) :
+        svc => {
+          hosts = {
+            for k, v in var.instances :
+            v.vm_name => {
+              ansible_host = v.ipv4_address
+            }
+            if v.service_name == svc
+          }
+        }
+      }
+    }
+  }
+}
+
+resource "local_file" "inventory" {
+  filename = var.filename
+  content  = yamlencode(local.inventory)
+}

terraform/modules/proxmox_ansible_inventory/outputs.tf

@@ -0,0 +1,7 @@
+output "filename" {
+  value = local_file.inventory.filename
+}
+
+output "content" {
+  value = local_file.inventory.content
+}

terraform/modules/proxmox_ansible_inventory/variables.tf

@@ -0,0 +1,13 @@
+variable "filename" {
+  description = "Path to write the inventory.yml file"
+  type        = string
+}
+
+variable "instances" {
+  description = "Normalized instance map keyed by instance key"
+  type = map(object({
+    service_name = string
+    vm_name      = string
+    ipv4_address = string
+  }))
+}