Create a Virtual Network in Azure using Terraform with modular approach part -4

Deploy  a module in Terraform for creation of Virtual Network  in Azure part-4

 Prerequisite:-

   Create a Resource Group  in Azure using terraform. Part -1
       Youtube link:-
          https://www.youtube.com/watch?v=pUUYL2fKQcc&t=363s
        Blog
         https://terraformwithkushagra.blogspot.com/2020/04/how-to-create-resource-in-azure-using.html

    Create a module in Terraform  for a Resource Group in Azure part-2
       Youtube link:-
        https://www.youtube.com/watch?v=O1DNLPyudEY&t=80s

       Blog:-
      https://terraformwithkushagra.blogspot.com/2020/04/how-to-create-module-for-resource-group.html

Now we will create a module for Virtual Network
===================================

Inside your module Folder create a subFolder named virtualnetwork_v1
  Create 3 Files
        1.virtual_network.tf
        2.variable.tf
        3.output.tf
 
1. in virtual_network.tf
   ==============================================
resource "azurerm_virtual_network" "virtual_network" {
  name                = var.vnet_name
  location            = var.resource_group_location
  address_space       = var.address_space
  resource_group_name = var.resource_group_name
  #dns_servers         = var.dns_server
  tags                = var.tags
}

2. in variable.tf
==================
variable "resource_group_name" {
}

variable "vnet_name" {
}

variable "resource_group_location" {
}
variable "address_space" {
  description = "The address space that is used by the virtual network."
  default     = []
}

variable "dns_server" {
  description = "The DNS servers to be used with vNet."
  default     = []
}
variable "tags" {
   type    = "map"
}

3. in output.tf
=================

output "azurerm_virtual_network_name" {
  value = "${azurerm_virtual_network.virtual_network.name}"
}



Go to HR Folder and create a file with name virtualnetwork.tf


module "trainingvnet" {
    source="../modules/virtualnetwork_v1"
    vnet_name=""
    resource_group_name=module.trainingrg.azurerm_resource_group_name
    location =module.trainingrg.azurerm_resource_group_location
    address_space       = var.address_space
#    dns_server       = var.dns_server
    tags                = var.tags
}

in the HR Folder create a a file with name variable.tf

variable "address_space" {

   default=["10.0.0.0/16"] 

}

variable "address_prefix" {

     default = "10.0.1.0/24

 }

<#

variable "dns_server" {

   default=["10.0.0.0/16"] 

}

#>

variable "vmsubnet_name" {

   default     = "tableausubnet01"

}

Now if you have to create a subnet with name vmsubnet then create a file vmsubnet.tf

resource "azurerm_subnet" "vmsubnet" {
  name                                 =  var.vmsubnet_name
  virtual_network_name      = module.trainingvnet.azurerm_virtual_network_name
  resource_group_name       = module.trainingrg.azurerm_resource_group_name
  address_prefix                   = var.address_prefix
 # network_security_group_id = "var.nsg_id
  service_endpoints         = ["Microsoft.Sql","Microsoft.Storage","Microsoft.KeyVault"]
}

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Now if you have to initialize the terraform because we are introducing new module
go to visualstudio code terminal and execute below command


terraform init -backend-config="access_key=$(az storage account keys list --resource-group "Terraform-Training-Rg" --account-name "stgtrainingstorefortf" --query '[0].value' -o tsv)"

terraform plan

terraform apply