Terraform Integration with GitHub Actions

1. Introduction

GitHub Actions allows you to automate, customize, and execute your software development workflows right in your repository. Terraform is an open-source tool that allows you to define and provision infrastructure as code. Integrating Terraform with GitHub Actions helps streamline the process of deploying infrastructure.

2. Key Concepts

2.3 Workflow

A workflow is defined in a YAML file and describes the automation steps that will execute upon a specific trigger, such as a push to a repository.

3. Step-by-Step Guide

3.1 Setting Up Your GitHub Repository

1. Create a new GitHub repository or navigate to an existing one.
2. Clone the repository to your local machine.
3. Initialize a new Terraform project in a directory.

3.2 Writing Terraform Configuration

Create a simple configuration file, main.tf, for example:

resource "aws_s3_bucket" "my_bucket" {
  bucket = "my-unique-bucket-name"
  acl    = "private"
}
            

3.3 Creating GitHub Actions Workflow

Create a new directory called .github/workflows in your repository, and add a YAML file (e.g., terraform.yml):

name: Terraform

on:
  push:
    branches:
      - main

jobs:
  terraform:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Set up Terraform
        uses: hashicorp/setup-terraform@v1
        with:
          terraform_version: 1.0.0

      - name: Terraform Init
        run: terraform init

      - name: Terraform Apply
        run: terraform apply -auto-approve
            

4. Best Practices

• Use remote backends for Terraform state management.
• Implement version control for your Terraform configurations.
• Use environment variables for sensitive data.
• Test your Terraform code before deploying it in production.

5. FAQ