Terraform

Terraform is an IaC tool for building, changing an versioning infrastructure safely and efficiently.

• Compatible with many clouds and services.
• Enables application software best practices to infrastructure.

Terraform Architecture

flowchart TD
A[Terraform State] <--> B{Terraform Core}
C[Terraform Config] --> B
B <---> D{AWS Provider}
B <---> H{Cloudflare Provider}
D --> J(AWS)
H --> K(Cloudflare)

Basic Usage Sequence

• terraform init: sets up the working directory and downloads plugins.
• terraform fmt: formats configuration file contents.
• terraform validate: checks configuration files for errors.
• terraform plan: shows what changes will be made.
• terraform apply: applies the planned changes.
• terraform destroy: deletes all managed resources.

Providers Definition

# Defines AWS provider
terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 5.0"
    }
  }
}
 
# Configure the AWS Provider
provider "aws" {
  region = "us-east-1"
}