DEV107 · Infrastructure as Code with Terraform

Describe infrastructure in code with Terraform so environments can be created, reviewed, changed and destroyed reliably. You will build reusable modules, manage state and variables, and run plans in a pipeline, all with free providers on your own computer.

Advance · 8 hours · 4 lessons, a lab, an assessed assignment and a portfolio piece

Who it is for

Operations staff, developers and IT administrators who provision servers, networks or cloud services and want repeatable, reviewable infrastructure.

Prerequisites

Complete DEV105 (DEV104 recommended) or be comfortable with Docker, Git and the command line.

What you will be able to do

• Explain infrastructure as code and the Terraform workflow of init, plan, apply and destroy.
• Write Terraform configurations with providers, resources, variables, outputs and data sources.
• Organize code into reusable modules and manage state safely, including remote backends and locking.
• Run Terraform in a team workflow with formatting, validation, security scanning and plans on pull requests.

Lessons

• Lesson 1 · Infrastructure as code and the Terraform workflow
• Lesson 2 · Variables, state and modules
• Lesson 3 · Terraform in teams and pipelines
• Lesson 4 · Lab and assignment

Lab: Provision a local web stack with Terraform

You will use Terraform with the Docker provider to create a network, a PostgreSQL container with a volume and two web containers, with values passed as variables. You will refactor the web service into a module, create separate dev and staging configurations, scan the code and add a GitHub Actions workflow that runs fmt, validate and plan on pull requests.

Free tools: Terraform CLI or OpenTofu (free), the Docker provider with Docker Desktop, the random and local providers, VS Code with the HashiCorp Terraform extension, TFLint and Trivy for configuration scanning, GitHub Actions

Assessed assignment

Write Terraform code that provisions the environment for a small business application, such as an online store or a clinic's booking system, using the Docker provider locally (or a cloud provider's free tier if you already have an account). Include at least one reusable module, variables with types, descriptions and validation, outputs, two environments that share the module with different settings, and a state backend configuration with notes on locking. Add a CI workflow that runs terraform fmt, validate, TFLint, a security scan and plan on every pull request. Document the architecture, how to apply and destroy each environment, and one change you demonstrated through a reviewed plan.

Portfolio piece

A modular, documented Terraform codebase with two environments and a CI workflow that plans every change.

Self-paced, 12-month access. Questions are answered in writing through the student panel. A completion record is issued when you finish the course.