add variable vnet_location to customize vnet location (#45)

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Author: yupwei68

README.md

@@ -56,6 +56,7 @@ resource "azurerm_resource_group" "example" {
 module "vnet" {
   source              = "Azure/vnet/azurerm"
   resource_group_name = azurerm_resource_group.example.name
+  vnet_location       = "East US"
   address_space       = ["10.0.0.0/16"]
   subnet_prefixes     = ["10.0.1.0/24", "10.0.2.0/24", "10.0.3.0/24"]
   subnet_names        = ["subnet1", "subnet2", "subnet3"]

main.tf

@@ -6,7 +6,7 @@ data azurerm_resource_group "vnet" {
 resource azurerm_virtual_network "vnet" {
   name                = var.vnet_name
   resource_group_name = data.azurerm_resource_group.vnet.name
-  location            = data.azurerm_resource_group.vnet.location
+  location            = var.vnet_location != null ? var.vnet_location : data.azurerm_resource_group.vnet.location
   address_space       = var.address_space
   dns_servers         = var.dns_servers
   tags                = var.tags

test/fixture/main.tf

@@ -14,13 +14,13 @@ resource "azurerm_resource_group" "test" {
 resource "azurerm_network_security_group" "nsg1" {
   name                = "test-${random_id.rg_name.hex}-nsg"
   resource_group_name = azurerm_resource_group.test.name
-  location            = azurerm_resource_group.test.location
+  location            = var.vnet_location
 }
 
 resource "azurerm_route_table" "rt1" {
-  location            = azurerm_resource_group.test.location
   name                = "test-${random_id.rg_name.hex}-rt"
   resource_group_name = azurerm_resource_group.test.name
+  location            = var.vnet_location
 }
 
 module "vnet" {
@@ -29,6 +29,7 @@ module "vnet" {
   address_space       = ["10.0.0.0/16"]
   subnet_prefixes     = ["10.0.1.0/24", "10.0.2.0/24", "10.0.3.0/24"]
   subnet_names        = ["subnet1", "subnet2", "subnet3"]
+  vnet_location       = var.vnet_location
 
   nsg_ids = {
     subnet1 = azurerm_network_security_group.nsg1.id

test/fixture/terraform.tfvars

@@ -1 +1,2 @@
-location = "westus"
+location      = "westus"
+vnet_location = "eastus"

test/fixture/variables.tf

@@ -1 +1,2 @@
 variable "location" {}
+variable "vnet_location" {}

variables.tf

@@ -74,3 +74,9 @@ variable "tags" {
     ENV = "test"
   }
 }
+
+variable "vnet_location" {
+  description = "The location of the vnet to create. Defaults to the location of the resource group."
+  type        = string
+  default     = null
+}