Made edits per Code Review

quickstart/201-k8s-cluster-with-tf-and-aks/main.tf

@@ -72,4 +72,6 @@ resource "azurerm_kubernetes_cluster" "k8s" {
     client_id     = azuread_service_principal.app.application_id
     client_secret = azuread_service_principal_password.app.value
   }
+
+  depends_on = [time_sleep.wait_30_seconds]
 }

quickstart/201-k8s-cluster-with-tf-and-aks/providers.tf

@@ -14,6 +14,10 @@ terraform {
       source  = "hashicorp/random"
       version = "~>3.0"
     }
+    time = {
+      source  = "hashicorp/time"
+      version = "0.9.1"
+    }
   }
 }
 

quickstart/201-k8s-cluster-with-tf-and-aks/sp.tf

@@ -16,6 +16,15 @@ resource "azuread_service_principal_password" "app" {
   service_principal_id = azuread_service_principal.app.id
 }
 
+# Sleep for 30 seconds to allow for propagation
+# of the Service Principal creation before attempting
+# to create the AKS cluster.
+resource "time_sleep" "wait_30_seconds" {
+  create_duration = "30s"
+
+  depends_on = [azuread_service_principal_password.app]
+}
+
 # Output the Service Principal and password
 output "sp" {
   value     = azuread_service_principal.app.id