20 ‐ Azure ‐ Terraform - SanjeevOCI/Azure GitHub Wiki

Steps to Create Azure Resources Using Terraform in Azure Cloud Shell

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1. Open Azure Cloud Shell

1. Log in to the Azure Portal.
2. Click on the Cloud Shell icon in the top-right corner.
3. Select Bash as the shell environment.

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2. Initialize Terraform in Azure Cloud Shell

1. Verify Terraform is pre-installed by running:

   terraform --version
   

2. Create a working directory for your Terraform files:

   mkdir terraform-azure && cd terraform-azure
   

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3. Create a Terraform Configuration File

1. Create a file named main.tf:

   vi main.tf
   

2. Add the following configuration to create Azure resources:

provider "azurerm" {
  features {}
  subscription_id = "024da94d-4ab2-429f-9b42-a588276a504b"
}

variable "resource_group_name" {
  default = "hub1_rg"
}

variable "location" {
  default = "East US"
}

variable "vnet_name" {
  default = "hub1_vnet"
}

variable "subnet_name" {
  default = "hub1_pub_subnet"
}

# Create Resource Group
resource "azurerm_resource_group" "rg" {
  name     = var.resource_group_name
  location = var.location
}

# Create Virtual Network
resource "azurerm_virtual_network" "vnet" {
  name                = var.vnet_name
  address_space       = ["172.1.0.0/24"]
  location            = var.location
  resource_group_name = azurerm_resource_group.rg.name
}

# Create Subnet
resource "azurerm_subnet" "subnet" {
  name                 = var.subnet_name
  resource_group_name  = azurerm_resource_group.rg.name
  virtual_network_name = azurerm_virtual_network.vnet.name
  address_prefixes     = ["172.1.0.0/27"]
}

# Public IP
resource "azurerm_public_ip" "vm_public_ip" {
  name                = "linux-vm1-public-ip"
  location            = var.location
  resource_group_name = azurerm_resource_group.rg.name
  allocation_method   = "Static"
  sku                 = "Basic"
}

# NIC
resource "azurerm_network_interface" "vm_nic" {
  name                = "linuxserver1-nic"
  location            = var.location
  resource_group_name = azurerm_resource_group.rg.name

  ip_configuration {
    name                          = "internal"
    subnet_id                     = azurerm_subnet.subnet.id
    private_ip_address_allocation = "Dynamic"
    public_ip_address_id          = azurerm_public_ip.vm_public_ip.id
  }
}

# Linux VM
resource "azurerm_linux_virtual_machine" "vm" {
  name                            = "LinuxServer1"
  resource_group_name             = azurerm_resource_group.rg.name
  location                        = var.location
  size                            = "Standard_B1ls"
  admin_username                  = "azureuser"
  admin_password                  = "Testuser@2025"
  disable_password_authentication = false

  network_interface_ids = [azurerm_network_interface.vm_nic.id]

  os_disk {
    caching              = "ReadWrite"
    storage_account_type = "Standard_LRS"
  }

  source_image_reference {
    publisher = "Canonical"
    offer     = "UbuntuServer"
    sku       = "18.04-LTS"
    version   = "latest"
  }
}

3. Get the subscription id by navigating to Subscriptions directory

4. Save and exit the editor.

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4. Create a Terraform Output File

1. Create a file named output.tf:

   vi output.tf
   

2. Add the following in the output.tf file:

output "resource_group_name" {
  value       = azurerm_resource_group.rg.name
  description = "The name of the resource group"
}

output "virtual_network_name" {
  value       = azurerm_virtual_network.vnet.name
  description = "The name of the virtual network"
}

output "public_subnet_name" {
  value       = azurerm_subnet.subnet.name
  description = "The name of the public subnet"
}

output "linux_vm_name" {
  value       = azurerm_linux_virtual_machine.vm.name
  description = "The name of the Linux virtual machine"
}

output "linux_vm_public_ip" {
  value       = azurerm_public_ip.vm_public_ip.ip_address
  description = "The public IP address of the Linux VM"
}

output "linux_vm_private_ip" {
  value       = azurerm_network_interface.vm_nic.ip_configuration[0].private_ip_address
  description = "The private IP address of the Linux VM"
}

output "linux_vm_nic_id" {
  value       = azurerm_network_interface.vm_nic.id
  description = "The ID of the network interface attached to the Linux VM"
}

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5. Initialize Terraform

1. Run the following command to initialize Terraform and download the Azure provider:

   terraform init
   

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6. Plan the Deployment

1. Generate an execution plan to preview the resources Terraform will create:

   terraform plan
   

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7. Apply the Configuration

1. Deploy the resources to Azure:

   terraform apply
   

2. Confirm the deployment by typing yes when prompted.

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8. Verify the Resources

Check the created resources in the Azure Portal:

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9. Clean Up Resources

1. To delete the resources created by Terraform, run:

   terraform destroy
   

2. Confirm the destruction by typing yes when prompted.

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Key Notes

• Azure Cloud Shell comes pre-installed with Terraform, so no additional setup is required.
• Always use terraform plan to preview changes before applying them.
• Store your Terraform files in a version control system like GitHub for better management.

This step-by-step guide ensures you can quickly create and manage Azure resources using Terraform in Azure Cloud Shell.