lab-iaac-terraform

name: lab-iaac-terraform description: Terraform code generation procedures and patterns for Azure hands-on labs. Cross-cutting rules are in the lab-shared-contract skill.

Terraform Scaffolding

Terraform-specific code generation procedures. All cross-cutting rules (naming, tags, SKUs, regions, limits) are defined in the lab-shared-contract skill — reference by ID, do not restate.

When to Use

• Generating Terraform code for a lab
• Scaffolding a new Terraform module structure
• Applying Terraform-specific patterns (provider, state, passwords, soft-delete)

Starter Templates

Located in lab-azure-governance skill (see R-160): .github/skills/lab-azure-governance/templates/terraform-module.stub/

Files: main.tf, variables.tf, outputs.tf, providers.tf, terraform.tfvars

R-120: Provider / Version Configuration

Every providers.tf must contain:

terraform {
  required_version = ">= 1.0"
  required_providers {
    azurerm = {
      source  = "hashicorp/azurerm"
      version = "~> 4.0"
    }
    random = {
      source  = "hashicorp/random"
      version = "~> 3.0"
    }
  }
}

provider "azurerm" {
  features {
    resource_group {
      prevent_deletion_if_contains_resources = false
    }
  }
  subscription_id = var.lab_subscription_id
}

Use AzureRM by default. Use AzAPI only if AzureRM lacks a required feature.

R-121: State Management

• Local state only — never configure remote backend.
• Ensure .tfstate* is in .gitignore.

R-122: Required File Structure

R-123: Module File Pattern

Each module directory contains:

• main.tf — resource definitions
• variables.tf — inputs (must accept tags map + resource IDs from other modules)
• outputs.tf — resource IDs, endpoints, principal IDs

Module organization rules: see lab-shared-contract R-022.

R-124: Password Generation

See lab-shared-contract R-024 for the canonical pattern and rules. Terraform implementation uses hashicorp/random. Never define passwords as input variables. Output as sensitive = true.

R-125: terraform.tfvars Template

lab_subscription_id = "e091f6e7-031a-4924-97bb-8c983ca5d21a"
location            = "eastus"
owner               = "Greg Tate"
date_created        = "<YYYY-MM-DD>"

Subscription ID: see lab-shared-contract R-020.

R-126: Soft-Delete Implementation

See lab-shared-contract R-016 for the resource table and Terraform disable patterns. Apply those settings to all resources in the R-016 table that are deployed in the lab.

R-127: Storage Container Pattern

See lab-shared-contract R-025. Always use storage_account_id (not storage_account_name):

resource "azurerm_storage_container" "example" {
  name               = "content"
  storage_account_id = azurerm_storage_account.example.id
}

R-128: Validation Script Pattern

Generate a PowerShell script in validation/ that:

1. Sources Confirm-LabSubscription from the lab-azure-governance skill (see R-161).
2. Validates deployed resources exist (using Get-AzResource or az resource list).
3. Tests key functionality (endpoints, connectivity).
4. Uses the $Main / $Helpers script block pattern.
5. Includes code header per lab-shared-contract R-012.