Terraform – Infrastructure as Code

Terraform is an infrastructure as code tool that enables you to define and provision data center infrastructure using a declarative configuration language. It supports multiple cloud providers and on-premises infrastructure.

Key Features

• Multi-Cloud: Single workflow for any infrastructure
• State Management: Track infrastructure changes
• Module System: Reusable infrastructure components
• Plan Command: Preview changes before applying
• Provider Ecosystem: Hundreds of provider integrations

Installation

Install Terraform on Linux:

wget -O- https://apt.releases.hashicorp.com/gpg | sudo gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg
echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/hashicorp.list
sudo apt update && sudo apt install terraform

Usage Examples

Define AWS infrastructure:

provider "aws" {
  region = "us-west-2"
}

resource "aws_instance" "web" {
  ami           = "ami-0c55b159cbfafe1f0"
  instance_type = "t2.micro"
  
  tags = {
    Name = "WebServer"
  }
}

Benefits

Terraform brings software development practices to infrastructure. Version control, code review, and testing apply to your infrastructure, enabling reliable and repeatable deployments.

Download Terraform