Terraform

Terraform is a source-available Infrastructure as Code (IaC) tool that allows users to define, provision, and manage infrastructure comments like virtual machines, networks, databases, DNS entries, Kubernetes (K8s), and SaaS integrations using Declarative Configuration files rather than manual setup processes.

Note: Hashicorp switched Terraform to a Business Source License 1.1

Useful Commands

• terraform init is required to initialize the directory
• terraform fmt will clean up the code visually
• terraform validate will validate the code to ensure it’s functional, checking for invalid or missing requirements
• terraform plan prints what’ll be created, destroyed, or modified on deployment
  • Add argument -out <PATH> to create a plan file
  • IMPORTANT: The saved plan doesn’t encrypt data like API keys, and should be encrypted if shared
• terraform apply to apply what’s planned
  • Add argument <PATH> to apply from a create plan

Note: Any terraform command can use -chdir=path/ to use configs in sub directories while still accessing files in the current directory, such as secrets.