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Infrastructure as Code (IaC) (Part 2 of 2)

 

M2L4 Brief


This self-study module introduces the fundamental concepts of Infrastructure as Code (IaC). It covers the benefits, core principles, tools, and hands-on exercises to help you get started with IaC.


Videos


  2. What is Infrastructure as Code?
  3. Understand the concept of IaC, its importance, and how it replaces manual infrastructure management with automation.
  4. Watch the video: https://www.youtube.com/watch?v=zWw2wuiKd5o&ab_channel=IBMTechnology
  5. Introduction to Terraform
  6. Get introduced to Terraform, one of the most popular IaC tools, and see how it is used to provision and manage infrastructure.
  7. Watch the video: https://www.youtube.com/watch?v=l5k1ai_GBDE&t=30s&ab_channel=TechWorldwithNana
  8. https://www.youtube.com/watch?v=tomUWcQ0P3k&ab_channel=Fireship

Readings


  2. What is Infrastructure as Code?
  3. Learn the basics of IaC, its principles, and how it automates infrastructure deployment.
  4. Read more: https://aws.amazon.com/what-is/iac/
  5. Benefits of Infrastructure as Code
  6. Understand how IaC improves consistency, scalability, and collaboration in infrastructure management.
  7. Read the article: https://www.spiceworks.com/tech/cloud/articles/what-is-infrastructure-as-code/
  8. IaC Basics and Concepts
  9. Explore the core concepts behind IaC, including declarative vs. imperative approaches, idempotency, and version control.
  10. Read the guide: https://devops.com/the-basics-of-infrastructure-as-code-a-primer-for-devops/
  11. Choosing the Right IaC Tool
  12. Compare popular IaC tools such as Terraform, CloudFormation, and Ansible, and understand their unique use cases.
  13. Read more: https://docs.aws.amazon.com/prescriptive-guidance/latest/choose-iac-tool/choose-tool.html

Hands-On Practice


  2. Setting Up IaC with Terraform
  • Install Terraform on your local machine: https://developer.hashicorp.com/terraform/downloads
  • Create your first Terraform configuration file to provision a basic resource (e.g., an AWS S3 bucket or Azure resource group).
  • Learn how to use terraform init, terraform plan, and terraform apply.
  1. Version Controlling IaC
  • Use Git to manage your Terraform files.
  • Push your Terraform configuration to a Git repository for better version control and collaboration.
  1. Explore Declarative vs. Imperative Approaches
  • Write a simple script in Ansible (imperative) and a Terraform configuration (declarative) for the same resource.
  • Compare the differences in how the tools approach resource management.

Helpful Links (References)


  2. Terraform Documentation
  3. Learn everything about Terraform, from installation to advanced features.
  4. Visit: https://developer.hashicorp.com/terraform/install
  5. AWS CloudFormation Guide
  6. Explore AWS’s IaC tool for managing and provisioning cloud resources.
  7. Visit: https://aws.amazon.com/cloudformation/getting-started/
  8. Azure Resource Manager Templates
  9. Discover how Azure’s IaC solution enables automated infrastructure management.
  10. Visit: https://learn.microsoft.com/en-us/azure/azure-resource-manager/templates/
  11. IaC Best Practices
  12. Learn best practices for writing, testing, and maintaining IaC scripts to ensure consistency and reliability.
  13. Visit: https://learn.microsoft.com/en-us/devsecops/playbook/articles/infrastructure/best-practices-infrastructure-pipelines

Key Concepts


  2. What is IaC?
  • Automating infrastructure setup using code.
  • Eliminates manual processes and reduces errors.
  1. Declarative vs. Imperative Approaches
  • Declarative: Define what you want (e.g., Terraform, CloudFormation).
  • Imperative: Define how to get what you want (e.g., Ansible, scripts).
  1. Idempotency
  • The ability to run the same script multiple times without unintended changes.
  1. Version Control
  • Storing IaC scripts in repositories like Git for tracking changes and collaboration.
  1. Popular Tools
  • Terraform: Cloud-agnostic and declarative.
  • AWS CloudFormation: Declarative and AWS-specific.
  • Ansible: Imperative and widely used for configuration management.

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