Terraform with Azure From Zero to Hero

Terraform is an open-source tool for provisioning and managing cloud infrastructure. It codifies infrastructure in configuration files that describe the topology of cloud resources. These resources include virtual machines, storage accounts, and networking interfaces. The Terraform CLI provides a simple mechanism to deploy and version the configuration files to Azure

Terraform's template-based configuration files enable you to define, provision, and configure Azure resources in a repeatable and predictable manner. Automating infrastructure has several benefits:

• Lowers the potential for human errors while deploying and managing infrastructure.
  
• Deploys the same template multiple times to create identical development, test, and production environments.
• Reduces the cost of development and test environments by creating them on-demand.
  

Prerequisites

• Terraform 0.14.9 or later
• The Azure CLI Tool installed

Installation (Windows)

PS C:\ > Invoke-WebRequest -Uri https://aka.ms/installazurecliwindows -OutFile .\AzureCLI.msi; Start-Process msiexec.exe -Wait -ArgumentList '/I AzureCLI.msi /quiet'; rm .\AzureCLI.msi

PS C:\ >  az login

With Terraform you can Automate and manage your infrastructure, your platform and services that run on that platformWhy Terraform:-

• Open source
• Declarative language
• Replicating infrastructure
• Platform Agnostic

Terraform Components

• Core: Configuration, State file (terraform.tfstate)
• Provider:  AWS, Azure,K8s,,,

Authenticate Terraform with Azure:

Which Tools is better for deploying Azure resources Terraform or Ansible, well while both tools can deploy and manage resources:
As a conclusion we can say:
Ansbile: Better for configuring the infrastructure
Terraform: Better for configuring the infrastructure

To write your configuration file, you will be using these syntax:

---

Terraform Commands

terraform refresh: Query infrastructure provider to get current state
terraform plan: Create an execution plan
terraform init: Prepare your working directory for other commands
terraform validate: Check whether the configuration is valid
terraform apply: Execute the plan
terraform destroy: Destroy the resources/infrastructure
terraform fmt: Reformat your configuration in the standard style

Download Terraform Cheatsheet

Organizing Your Terraform Code
Either you wirte with the basic form or you use Best Practice/Recommended format

Basic:

Best Practice/Recommended

Sample Example

Create Resource Group & Network Security Group