Terraform Basics

Learning Objectives

• Understand Terraform's core concepts and workflow
• Create infrastructure resources using Terraform HCL
• Manage infrastructure state and dependencies
• Implement modular and reusable Terraform code
• Apply Terraform best practices for organization and security

Requirements

You are required to implement basic infrastructure using Terraform:

1. Terraform Configuration Basics
   • Create a new Terraform project with proper structure:

     terraform-project/
     ├── main.tf       # Main configuration file
     ├── variables.tf  # Input variables
     ├── outputs.tf    # Output values
     ├── providers.tf  # Provider configuration
     └── .gitignore    # Exclude state files and secrets
     

   • Configure the AWS or Azure provider
   • Set up provider authentication
   • Initialize the Terraform working directory (terraform init)
2. Basic Infrastructure Deployment
   • Create a Virtual Private Cloud (VPC) or Virtual Network
   • Implement at least two subnets (public and private)
   • Create security groups or network security groups
   • Deploy a simple virtual machine
   • Configure network interfaces
3. Resource Organization and Variables
   • Use input variables for customization
   • Implement local variables for internal calculations
   • Create meaningful outputs
   • Use data sources to query existing resources
   • Implement resource dependencies
   • Use proper naming conventions and tags
4. State Management
   • Understand Terraform state concepts
   • Configure a local backend for state storage
   • Perform state operations (terraform state list, etc.)
   • Implement state locking for collaborative work
   • Document backup procedures for state files
5. Testing and Validation
   • Validate configurations (terraform validate)
   • Generate an execution plan (terraform plan)
   • Apply the configuration (terraform apply)
   • Verify created resources via cloud console
   • Destroy resources when finished (terraform destroy)

Stretch goals

• Implement a remote backend (S3 + DynamoDB or Azure Storage)
• Create a reusable module for network configuration
• Use Terraform workspaces for managing multiple environments
• Implement dynamic blocks for repeated resource patterns
• Add automated tests for Terraform code

Deliverables

• Complete Terraform project implementing the required infrastructure
• Documentation of the infrastructure architecture with diagrams
• Screenshots showing successful apply and resources created
• README with instructions for using the Terraform configuration
• Summary of lessons learned and challenges encountered

Links

• Terraform Getting Started Guide
• Terraform Language Documentation
• Terraform Best Practices
• AWS Terraform Provider Documentation
• Azure Terraform Provider Documentation
• Terraform Module Registry
• Terraform State Management
• Visualizing Terraform Graphs

Once you have completed this project, you will be able to create and manage infrastructure using Terraform - a fundamental skill for implementing Infrastructure as Code in modern DevOps environments.