Devops 348 (#30)

* reuse existing rg to deploy user managed identity

* reuse existing rg to deploy user managed identity

* reuse existing rg to deploy user managed identity DEVOPS-347

Author: githubofkrishnadhas

user-assigned-managed-identity/README.md

@@ -0,0 +1,5 @@
+# Use existing resource group when not creating new one
+data "azurerm_resource_group" "existing" {
+  count = var.create_in_existing_resource_group ? 1 : 0
+  name  = var.resource_group_name
+}

user-assigned-managed-identity/data.tf

@@ -0,0 +1,4 @@
+# Unified local to refer to the selected RG
+locals {
+  resource_group_name = var.create_in_existing_resource_group ? data.azurerm_resource_group.existing[0].name : azurerm_resource_group.rg[0].name
+}

user-assigned-managed-identity/locals.tf

@@ -1,4 +1,5 @@
 resource "azurerm_resource_group" "rg" {
+  count    = var.create_in_existing_resource_group ? 0 : 1
   name     = upper(var.resource_group_name)
   location = var.location
   tags = {
@@ -13,7 +14,7 @@ resource "azurerm_resource_group" "rg" {
 resource "azurerm_user_assigned_identity" "managed_identity" {
   name                = upper(var.managed_identity_name)
   location            = var.location
-  resource_group_name = azurerm_resource_group.rg.name
+  resource_group_name = local.resource_group_name
   tags = {
     Environment     = upper(var.environment)
     Orchestrator    = "Terraform"

user-assigned-managed-identity/managed-identity.tf

@@ -44,3 +44,8 @@ variable "temporary" {
 
 }
 
+variable "create_in_existing_resource_group" {
+  default     = false
+  description = "Create managed identity in existing resource group"
+  type        = bool
+}