fix 101-application-gateway (#149)

Co-authored-by: zjhe <hezijie@microsoft.com>

quickstart/101-application-gateway/main.tf

@@ -1,43 +1,48 @@
-resource "azurerm_resource_group" "rg1" {
-  name     = "myResourceGroupAG"
+resource "random_string" "rg" {
+  length  = 8
+  upper   = false
+  special = false
+}
+
+resource "azurerm_resource_group" "rg" {
+  name     = "101-application-gateway-${random_string.rg.result}"
   location = "eastus"
 }
 
-resource "azurerm_virtual_network" "vnet1" {
+resource "azurerm_virtual_network" "vnet" {
   name                = "myVNet"
-  resource_group_name = azurerm_resource_group.rg1.name
-  location            = azurerm_resource_group.rg1.location
+  resource_group_name = azurerm_resource_group.rg.name
+  location            = azurerm_resource_group.rg.location
   address_space       = ["10.21.0.0/16"]
 }
 
 resource "azurerm_subnet" "frontend" {
   name                 = "myAGSubnet"
-  resource_group_name  = azurerm_resource_group.rg1.name
-  virtual_network_name = azurerm_virtual_network.vnet1.name
+  resource_group_name  = azurerm_resource_group.rg.name
+  virtual_network_name = azurerm_virtual_network.vnet.name
   address_prefixes     = ["10.21.0.0/24"]
 }
 
 resource "azurerm_subnet" "backend" {
   name                 = "myBackendSubnet"
-  resource_group_name  = azurerm_resource_group.rg1.name
-  virtual_network_name = azurerm_virtual_network.vnet1.name
+  resource_group_name  = azurerm_resource_group.rg.name
+  virtual_network_name = azurerm_virtual_network.vnet.name
   address_prefixes     = ["10.21.1.0/24"]
 }
 
-resource "azurerm_public_ip" "pip1" {
+resource "azurerm_public_ip" "pip" {
   name                = "myAGPublicIPAddress"
-  resource_group_name = azurerm_resource_group.rg1.name
-  location            = azurerm_resource_group.rg1.location
+  resource_group_name = azurerm_resource_group.rg.name
+  location            = azurerm_resource_group.rg.location
   allocation_method   = "Static"
   sku                 = "Standard"
 }
 
 
-
 resource "azurerm_application_gateway" "network" {
   name                = "myAppGateway"
-  resource_group_name = azurerm_resource_group.rg1.name
-  location            = azurerm_resource_group.rg1.location
+  resource_group_name = azurerm_resource_group.rg.name
+  location            = azurerm_resource_group.rg.location
 
   sku {
     name     = "Standard_v2"
@@ -57,7 +62,7 @@ resource "azurerm_application_gateway" "network" {
 
   frontend_ip_configuration {
     name                 = var.frontend_ip_configuration_name
-    public_ip_address_id = azurerm_public_ip.pip1.id
+    public_ip_address_id = azurerm_public_ip.pip.id
   }
 
   backend_address_pool {
@@ -85,14 +90,15 @@ resource "azurerm_application_gateway" "network" {
     http_listener_name         = var.listener_name
     backend_address_pool_name  = var.backend_address_pool_name
     backend_http_settings_name = var.http_setting_name
+    priority                   = 1
   }
 }
 
 resource "azurerm_network_interface" "nic" {
-  count = 2
+  count               = 2
   name                = "nic-${count.index+1}"
-  location            = azurerm_resource_group.rg1.location
-  resource_group_name = azurerm_resource_group.rg1.name
+  location            = azurerm_resource_group.rg.location
+  resource_group_name = azurerm_resource_group.rg.name
 
   ip_configuration {
     name                          = "nic-ipconfig-${count.index+1}"
@@ -101,26 +107,26 @@ resource "azurerm_network_interface" "nic" {
   }
 }
 
-resource "azurerm_network_interface_application_gateway_backend_address_pool_association" "nic-assoc01" {
-  count = 2
+resource "azurerm_network_interface_application_gateway_backend_address_pool_association" "nic-assoc" {
+  count                   = 2
   network_interface_id    = azurerm_network_interface.nic[count.index].id
   ip_configuration_name   = "nic-ipconfig-${count.index+1}"
-  backend_address_pool_id = azurerm_application_gateway.network.backend_address_pool[0].id
+  backend_address_pool_id = one(azurerm_application_gateway.network.backend_address_pool).id
 }
 
 resource "random_password" "password" {
-  length = 16
+  length  = 16
   special = true
-  lower = true
-  upper = true
-  number = true
+  lower   = true
+  upper   = true
+  numeric = true
 }
 
 resource "azurerm_windows_virtual_machine" "vm" {
-  count = 2
+  count               = 2
   name                = "myVM${count.index+1}"
-  resource_group_name = azurerm_resource_group.rg1.name
-  location            = azurerm_resource_group.rg1.location
+  resource_group_name = azurerm_resource_group.rg.name
+  location            = azurerm_resource_group.rg.location
   size                = "Standard_DS1_v2"
   admin_username      = "azureadmin"
   admin_password      = random_password.password.result
@@ -144,7 +150,7 @@ resource "azurerm_windows_virtual_machine" "vm" {
 }
 
 resource "azurerm_virtual_machine_extension" "vm-extensions" {
-  count = 2
+  count                = 2
   name                 = "vm${count.index+1}-ext"
   virtual_machine_id   = azurerm_windows_virtual_machine.vm[count.index].id
   publisher            = "Microsoft.Compute"

quickstart/101-application-gateway/outputs.tf

@@ -0,0 +1,3 @@
+output "gateway_frontend_ip" {
+  value = "http://${azurerm_public_ip.pip.ip_address}"
+}

quickstart/101-application-gateway/providers.tf

@@ -1,11 +1,14 @@
 terraform {
-
-  required_version = ">=0.12"
+  required_version = ">=1.2"
   
   required_providers {
     azurerm = {
       source  = "hashicorp/azurerm"
-      version = ">=2.97.0"
+      version = "~> 3.0"
+    }
+    random = {
+      source = "hashicorp/random"
+      version = "~> 3.0"
     }
   }
 }