How to Deploy a CentOS Linux VM in Azure using Terraform

In this story, we will learn how to deploy a CentOS Linux VM in Azure using Terraform.

Prerequisites

Before creating our Azure Virtual Machine, we will need an Azure SPN (Service Principal) to execute our Terraform code (check step 1 of this story if you need help creating an SPN).

Creating a Terraform file for Azure Authentication

First, we create a file called provider-variables.tf, used by Azure authentication variables.

We will use a Service Principal with a Client Secret. Check the link below for more info about Azure authentication for Terraform: https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/guides/service_principal_client_secret

variable "azure_subscription_id" {
  type = string
  description = "Azure Subscription ID"
}
variable "azure_client_id" {
  type = string
  description = "Azure Client ID"
}
variable "azure_client_secret" {
  type = string
  description = "Azure Client Secret"
}
variable "azure_tenant_id" {
  type = string
  description = "Azure Tenant ID"
}

After that, we edit the file terraform.tfvars and add the Azure credential…