autojanet/skills/understand/languages/terraform.md

Terraform Language Prompt Snippet

Key Concepts

• Declarative Infrastructure: Define desired state; Terraform computes and applies the diff
• Providers: Plugins connecting to cloud APIs (AWS, GCP, Azure, Kubernetes, etc.)
• Resources: resource "type" "name" blocks declaring infrastructure components
• Data Sources: data "type" "name" blocks reading existing infrastructure state
• Variables: variable blocks for parameterizing configurations with defaults and validation
• Outputs: output blocks exposing values for cross-module references or human consumption
• Modules: Reusable, composable infrastructure packages with their own variables and outputs
• State Management: .tfstate files tracking real-world resource mapping (never commit to git)
• Workspaces: Isolated state environments for managing dev/staging/prod from one codebase
• Plan and Apply: terraform plan previews changes, terraform apply executes them

Notable File Patterns

• main.tf — Primary resource definitions
• variables.tf — Input variable declarations with types and defaults
• outputs.tf — Output value definitions
• providers.tf — Provider configuration and version constraints
• backend.tf — Remote state backend configuration (S3, GCS, etc.)
• modules/**/*.tf — Reusable infrastructure modules
• *.tfvars — Variable value files for different environments
• terraform.lock.hcl — Provider version lock file

Edge Patterns

• Terraform files provisions the infrastructure resources they define
• Module references create depends_on edges between terraform files
• Terraform deploys application code by referencing container images or deployment targets
• Variable files configures the terraform modules they parameterize

Summary Style

"Terraform configuration provisioning N AWS resources including VPC, ECS cluster, and RDS instance." "Infrastructure module defining a reusable Kubernetes namespace with RBAC and network policies." "Variable definitions for N environment-specific settings (region, instance type, scaling)."