Terraform with Vault & Terragrunt — Lesson 2: Dependencies, Remote State Generation, and Terragrunt Execution

Lesson Overview

This lesson focuses on Dependencies, Remote State Generation, and Terragrunt Execution and its role in the wider managing multi-environment Terraform with Terragrunt while using Vault for dynamic secrets, identity-based access, secure pipelines, dependency orchestration, and controlled operations workflow.

Learners work with the actual design choices, dependencies, controls, and failure modes that distinguish this topic from a generic Terraform exercise.

Technical Scope

dependency and dependencies blocks
Mock outputs and plan-time behavior
Generated backend and provider configuration
run-all ordering, parallelism, and failure handling

Instructor Demonstration

Compose network, database, and application components with dependency outputs.

Applied Workshop

Create a safe plan workflow for a new environment before all dependencies exist.

Translate the scenario into configuration, access, state, pipeline, or module decisions.
Implement the change in a controlled workspace or repository.
Capture the plan, logs, outputs, policy results, and post-change checks.
Explain one safer or more maintainable alternative and its trade-off.

Validation Standard

Execution order is deterministic and generated state configuration is correct.

The intended target, identity, environment, and state boundary are confirmed.
The plan or execution evidence contains no unexplained destructive action.
Security, reliability, maintainability, and operational ownership are reviewed.
The final result can be reproduced from version-controlled inputs.

Failure Analysis

Fix cyclic dependencies, missing outputs, unsafe mocks, state key collisions, and partial run-all failure.

Learners isolate the smallest verified cause, correct it, rerun the relevant validation step, and record the preventive action in the course improvement log.

Terraform with Vault & Terragrunt 1 Section4 Lessons40 Hours

Curriculum