Advanced DevOps – Puppet, Terraform and Kubernetes — Lesson 1: Defining Ownership across Terraform, Puppet, and Kubernetes

Technical Scope

• Infrastructure, operating-system, and workload control planes
• Immutable versus mutable infrastructure trade-offs
• Tool ownership matrix and lifecycle boundaries
• Repositories, environments, promotion, and governance

Instructor Demonstration

Classify a platform stack into Terraform resources, Puppet classes, and Kubernetes objects.

Applied Workshop

Create an ownership matrix that prevents two tools from managing the same setting.

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

Every managed object has one authoritative tool and a documented handoff.

• 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

Resolve overlapping ownership, reconciliation loops, bootstrap timing, and unclear rollback responsibility.

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