Infrastructure as Code with HashiCorp Terraform Thorsten Hans @ThorstenHans Consultant

Focus: Cloud Native & Infrastructure as Code Consultant @ Thinktecture AG [email protected] [email protected] thinktecture.com thorsten-hans.com @ThorstenHans Thorsten Hans

Talking Points Terraform and Infrastructure as Code Introduction Terraforming Microsoft Azure Continuous Integration with GitHub Actions Terraform Resources

by HashiCorp • Toolset for Infrastructure as Code • Written in Go • Available for Windows, Linux, macOS, FreeBSD, OpenBSD, Solaris • Open Source • Optional paid services • Terraform Cloud (adds collaboration features) • Terraform Enterprise (adds governance features) Terraform

Terraform Write, Plan, and Create 1 Infrastructure as Code 2 Preview Changes before applying 3 Build reproducible infrastructure

Terraform Write, Plan, and Create 1 Infrastructure as Code 2 Preview Changes before applying 3 Build reproducible infrastructure

Infrastructure as Code • Automate your Infrastructure • Can be stored in a version control system (git) • Change History / Change Tracking • Collaboration • Better documentation • Eliminates the Truck Factor (or Single Point of Failure) • Predictable deployments Terraform - Write

Terraform Write, Plan, and Create 1 Infrastructure as Code 2 Preview Changes before applying 3 Build reproducible infrastructure

Preview changes before applying • Execution plan tells you which parts of the environment will be • Created • Modified • Deleted • Displayed / Verified before modifying the targeting infrastructure • Think of git status Terraform - Plan

Terraform Write, Plan, and Create 1 Infrastructure as Code 2 Preview Changes before applying 3 Build reproducible infrastructure

Build reproducible infrastructure • One Terraform script can be applied million times • Configurable environments • Variables • Interpolation • Built-in functions Terraform - Create

Write Code Terraform plan Verify Terraform apply Consume The Terraform Lifecycle Terraform Destroy

HashiCorp Configuration Language • Declarative language used to code your infrastructure • Based on JSON but more focused • Simple but powerful type system • Strings, Numbers, Booleans, Maps, Lists • One language for all infrastructure vendors • Using dedicated Providers Meet the HCL

Talking Points Terraform and Infrastructure as Code Introduction Terraforming Microsoft Azure Continuous Integration with GitHub Actions Terraform Resources

The AzureRM Provider • Terraform Provider supports all ARM API Features • Different Authentication patterns supported • Reuse Azure CLI Authentication • Dedicated Service Principal • Dedicated Managed Service Identity • Read/Write Azure Resources Terraforming Microsoft Azure

Demo Terraforming Microsoft Azure

Talking Points Terraform and Infrastructure as Code Introduction Terraforming Microsoft Azure Continuous Integration with GitHub Actions Terraform Resources

Terraform in GitHub Actions • Use official Actions provided by HashiCorp • hashicorp/terraform-github-actions@master • Use GitHub’s Repository Secrets to establish context • Display output from various Actions such as • Format • Validate • Plan Continuous Integration

Demo Continuous Integration with GitHub Actions

Talking Points Terraform and Infrastructure as Code Introduction Terraforming Microsoft Azure Continuous Integration with GitHub Actions Terraform Resources

Essential Features • Modules • https://thns.io/2R73oIQ • Workspaces • https://thns.io/2OZMs4Y • Terraform State • https://thns.io/2AftGS2 • Backends • https://thns.io/2DFyNOy Terraform Resources

Great free and paid resources • Terraform Guide for Azure enthusiasts • https://thns.io/terraform-guide • Terraform Best Practices • https://thns.io/2P0mb6z • Book: Terraform: Up and Running • https://thns.io/2QdJSNz Terraform Resources

Q&A If you have further questions: shoot me a mail at [email protected] / [email protected] or tweet at @ThorstenHans