Azure Virtual Machine Module

This Terraform module simplifies the deployment of one or more Azure Virtual Machines (VMs) within a specified Azure location. It supports flexible configurations, dynamic resource creation, and secure SSH authentication.

Features

• Deploys one or more Azure Linux Virtual Machines.
• Dynamically generates resource names based on environment and region.
• Supports flexible VM configurations (e.g., size, admin username).
• Automatically attaches a public IP to each VM.
• Enforces secure SSH key-based authentication.

Requirements

• Terraform: v1.5.0 or later
• Azure CLI: v2.67.0 or later
• AzureRM Provider: v3.70.0 or later
• Azure Subscription: Ensure the subscription ID is set as an environment variable.

Usage

tree
├── README.md
└── terraform
    ├── modules
    │   └── azure-vm
    │       ├── az-vm.tf
    │       ├── outputs.tf
    │       └── variables.tf
    └── sites
        └── eastus
            ├── main.tf
            ├── outputs.tf
            └── versions.tf

6 directories, 7 files

1. Configure the Environment

Set the Azure Subscription ID: Terraform requires the Azure subscription ID to authenticate. Export it as an environment variable:

export ARM_SUBSCRIPTION_ID="your-subscription-id"

Log in using the Azure CLI:

az login

2. Initialize Terraform

Navigate to the site-specific directory (e.g., eastus):

cd terraform/sites/eastus
terraform init

3. Plan the Deployment

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

terraform plan

4. Apply the Configuration

Deploy the infrastructure:

terraform apply

Terraform will prompt for confirmation before creating the resources. Type yes to proceed.

5. Verify the Deployment

Get Outputs: After applying, view the outputs (e.g., VM names, public IPs):

terraform output

SSH into the VM: Use the private SSH key to connect to the VM:

ssh -i id_rsa azureuser@<public-ip>

6. Destroy the Deployment

To remove all resources created by Terraform:

terraform destroy

Instance Example

module "azure_vm" {
  source              = "./modules/azure-vm"
  environment         = "dev"
  location            = "eastus"
  vm_count            = 2
  admin_username      = "azureuser"
  vm_size             = "Standard_B1s"
  resource_group_name = "example-rg"
}

Outputs

Name	Description
vm_ids	List of IDs of the created Virtual Machines.
vm_names	List of names of the created Virtual Machines.
public_ips	List of public IP addresses.
current_subscription_id	Show current subscription ID.

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Azure Linux VM Sizes with Pricing (East US Region)

For current sizes and pricing visit the Azure Instances Size documentation. Below are a few examples:

VM Series	VM Size	vCPUs	Memory (GiB)	Price per Hour (USD)
B-Series	B1s	1	1	$0.012
	B2s	2	4	$0.049
D-Series	D2_v5	2	8	$0.096
	D4_v5	4	16	$0.192
E-Series	E2s_v5	2	16	$0.113
	E4s_v5	4	32	$0.226
F-Series	F2s_v2	2	4	$0.085
	F4s_v2	4	8	$0.170
L-Series	L4s	4	32	$0.376
	L8s	8	64	$0.752
M-Series	M8ms	8	218	$1.872
	M16ms	16	433	$3.744

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License

This module is open-source and available under the MIT License.

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For questions or issues, feel free to open a GitHub issue or contact the maintainer.