Advanced DevOps – Puppet, Terraform and Kubernetes — Lesson 2: Provisioning Cluster Infrastructure and Bootstrap Inputs with Terraform

Technical Scope

• Reusable network, compute, storage, and load-balancer modules
• Bootstrap data, outputs, and inventory generation
• Remote state and environment composition
• Plan gates, drift review, and safe replacement

Instructor Demonstration

Provision cluster prerequisites and export node data for configuration management.

Applied Workshop

Build a node-pool module with stable addressing and upgrade-safe inputs.

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

Validation Standard

Infrastructure outputs are complete, state is protected, and replacement impact is understood.

• 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 dependency cycles, bootstrap failures, node replacement, and stale inventory data.

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