added sample for creating a NAT gateway with a virtual machine and corresponding network, subnet and public IP addresses

quickstart/101-nat-gateway-create/main.tf

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+# Resource Group
+resource "azurerm_resource_group" "rg" {
+  location = var.resource_group_location
+  name     = "${random_pet.prefix.id}-rg"
+}
+
+# Virtual Network
+resource "azurerm_virtual_network" "my_terraform_network" {
+  name                = "${random_pet.prefix.id}-vnet"
+  address_space       = ["10.0.0.0/16"]
+  location            = azurerm_resource_group.rg.location
+  resource_group_name = azurerm_resource_group.rg.name
+}
+
+# Subnet 1
+resource "azurerm_subnet" "my_terraform_subnet_1" {
+  name                 = "subnet-1"
+  resource_group_name  = azurerm_resource_group.rg.name
+  virtual_network_name = azurerm_virtual_network.my_terraform_network.name
+  address_prefixes     = ["10.0.0.0/24"]
+}
+
+# Public IP address for NAT gateway
+resource "azurerm_public_ip" "my_public_ip" {
+  name                = "public-ip-nat"
+  location            = azurerm_resource_group.rg.location
+  resource_group_name = azurerm_resource_group.rg.name
+  allocation_method   = "Static"
+  sku                 = "Standard"
+}
+
+# NAT Gateway
+resource "azurerm_nat_gateway" "my_nat_gateway" {
+  name                = "nat-gateway"
+  location            = azurerm_resource_group.rg.location
+  resource_group_name = azurerm_resource_group.rg.name
+}
+
+# Associate NAT Gateway with Public IP
+resource "azurerm_nat_gateway_public_ip_association" "example" {
+  nat_gateway_id       = azurerm_nat_gateway.my_nat_gateway.id
+  public_ip_address_id = azurerm_public_ip.my_public_ip.id
+}
+
+# Associate NAT Gateway with Subnet
+resource "azurerm_subnet_nat_gateway_association" "example" {
+  subnet_id      = azurerm_subnet.my_terraform_subnet_1.id
+  nat_gateway_id = azurerm_nat_gateway.my_nat_gateway.id
+}
+
+# Create public IP for virtual machine
+resource "azurerm_public_ip" "my_public_ip_vm" {
+  name                = "public-ip-vm"
+  location            = azurerm_resource_group.rg.location
+  resource_group_name = azurerm_resource_group.rg.name
+  allocation_method   = "Static"
+  sku                 = "Standard"
+}
+
+# Create Network Security Group and rule
+resource "azurerm_network_security_group" "my_terraform_nsg" {
+  name                = "nsg-1"
+  location            = azurerm_resource_group.rg.location
+  resource_group_name = azurerm_resource_group.rg.name
+
+  security_rule {
+    name                       = "SSH"
+    priority                   = 1001
+    direction                  = "Inbound"
+    access                     = "Allow"
+    protocol                   = "Tcp"
+    source_port_range          = "*"
+    destination_port_range     = "22"
+    source_address_prefix      = "*"
+    destination_address_prefix = "*"
+  }
+}
+
+# Create network interface
+resource "azurerm_network_interface" "my_terraform_nic" {
+  name                = "nic-1"
+  location            = azurerm_resource_group.rg.location
+  resource_group_name = azurerm_resource_group.rg.name
+
+  ip_configuration {
+    name                          = "my_nic_configuration"
+    subnet_id                     = azurerm_subnet.my_terraform_subnet_1.id
+    private_ip_address_allocation = "Dynamic"
+    public_ip_address_id          = azurerm_public_ip.my_public_ip_vm.id
+  }
+}
+
+# Connect the security group to the network interface
+resource "azurerm_network_interface_security_group_association" "example" {
+  network_interface_id      = azurerm_network_interface.my_terraform_nic.id
+  network_security_group_id = azurerm_network_security_group.my_terraform_nsg.id
+}
+
+# Generate random text for a unique storage account name
+resource "random_id" "random_id" {
+  keepers = {
+    # Generate a new ID only when a new resource group is defined
+    resource_group = azurerm_resource_group.rg.name
+  }
+
+  byte_length = 8
+}
+
+# Create storage account for boot diagnostics
+resource "azurerm_storage_account" "my_storage_account" {
+  name                     = "diag${random_id.random_id.hex}"
+  location                 = azurerm_resource_group.rg.location
+  resource_group_name      = azurerm_resource_group.rg.name
+  account_tier             = "Standard"
+  account_replication_type = "LRS"
+}
+
+# Create virtual machine
+resource "azurerm_linux_virtual_machine" "my_terraform_vm" {
+  name                  = "vm-1"
+  location              = azurerm_resource_group.rg.location
+  resource_group_name   = azurerm_resource_group.rg.name
+  network_interface_ids = [azurerm_network_interface.my_terraform_nic.id]
+  size                  = "Standard_DS1_v2"
+
+  os_disk {
+    name                 = "myOsDisk"
+    caching              = "ReadWrite"
+    storage_account_type = "Premium_LRS"
+  }
+
+  source_image_reference {
+    publisher = "Canonical"
+    offer     = "0001-com-ubuntu-server-jammy"
+    sku       = "22_04-lts-gen2"
+    version   = "latest"
+  }
+
+  computer_name  = "hostname"
+  admin_username = var.username
+
+  admin_ssh_key {
+    username   = var.username
+    public_key = jsondecode(azapi_resource_action.ssh_public_key_gen.output).publicKey
+  }
+
+  boot_diagnostics {
+    storage_account_uri = azurerm_storage_account.my_storage_account.primary_blob_endpoint
+  }
+}
+
+resource "random_pet" "prefix" {
+  prefix = var.resource_group_name_prefix
+  length = 1
+}

quickstart/101-nat-gateway-create/outputs.tf

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+output "resource_group_name" {
+  description = "The name of the created resource group."
+  value       = azurerm_resource_group.rg.name
+}
+
+output "virtual_network_name" {
+  description = "The name of the created virtual network."
+  value       = azurerm_virtual_network.my_terraform_network.name
+}
+
+output "subnet_name_1" {
+  description = "The name of the created subnet 1."
+  value       = azurerm_subnet.my_terraform_subnet_1.name
+}
+
+output "nat_gateway"{
+  description = "The name of the created NAT gateway."
+  value       = azurerm_nat_gateway.my_nat_gateway.id
+}

quickstart/101-nat-gateway-create/providers.tf

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+terraform {
+  required_providers {
+    azapi = {
+      source  = "azure/azapi"
+      version = "~>1.5"
+    }
+    azurerm = {
+      source  = "hashicorp/azurerm"
+      version = "~>3.0"
+    }
+    random = {
+      source  = "hashicorp/random"
+      version = "~>3.0"
+    }
+  }
+}
+
+provider "azurerm" {
+  features {}
+}

quickstart/101-nat-gateway-create/readme.md

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+# Azure NAT Gateway with a Linux virtual machine
+
+This template deploys an Azure Virtual Network, a subnet, a Azure NAT Gateway, a two public IP addresses and a Linux virtual machine. 
+
+## Terraform resource types
+
+- [azurerm_resource_group](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/resource_group)
+- [azurerm_virtual_network](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/virtual_network)
+- [azurerm_subnet](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/subnet)
+- [azurerm_public_ip](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/public_ip)
+- [azurerm_nat_gateway](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/nat_gateway)
+- [azurerm_nat_gateway_public_ip_association](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/nat_gateway_public_ip_association)
+- [azurerm_subnet_nat_gateway_association](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/subnet_nat_gateway_association)
+- [azurerm_network_security_group](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/network_security_group)
+- [azurerm_linux_virtual_machine](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/linux_virtual_machine)
+- [azurerm_network_interface](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/network_interface)
+- [azurerm_network_interface_security_group_association](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/network_interface_security_group_association)
+- [azurerm_storage_account](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/storage_account)
+- [random_id](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/id)
+- [random_pet](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/pet)
+
+## Variables
+
+| Name | Description | Default |
+|-|-|-|
+| `resource_group_name_prefix` | Prefix of the resource group name that's combined with a random ID so name is unique in your Azure subscription. | rg |
+| `resource_group_location` | Location of the resource group. | eastus |
+| `username` | Username of the administrator account of the virtual machine. | azureuser |
+
+## Example

quickstart/101-nat-gateway-create/ssh.tf

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+resource "random_pet" "ssh_key_name" {
+  prefix    = "ssh"
+  separator = ""
+}
+
+resource "azapi_resource_action" "ssh_public_key_gen" {
+  type        = "Microsoft.Compute/sshPublicKeys@2022-11-01"
+  resource_id = azapi_resource.ssh_public_key.id
+  action      = "generateKeyPair"
+  method      = "POST"
+
+  response_export_values = ["publicKey", "privateKey"]
+}
+
+resource "azapi_resource" "ssh_public_key" {
+  type      = "Microsoft.Compute/sshPublicKeys@2022-11-01"
+  name      = random_pet.ssh_key_name.id
+  location  = azurerm_resource_group.rg.location
+  parent_id = azurerm_resource_group.rg.id
+}
+
+output "key_data" {
+  value = jsondecode(azapi_resource_action.ssh_public_key_gen.output).publicKey
+}

quickstart/101-nat-gateway-create/variables.tf

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+variable "resource_group_location" {
+  type        = string
+  default     = "eastus"
+  description = "Location of the resource group."
+}
+
+variable "resource_group_name_prefix" {
+  type        = string
+  default     = "rg"
+  description = "Prefix of the resource group name that's combined with a random ID so name is unique in your Azure subscription."
+}
+
+variable "username" {
+  type        = string
+  description = "The username for the local account that will be created on the new VM."
+  default     = "azureuser"
+}