DO274: Introduction to Event-Driven Ansible — Lesson 4: Testing, Security, Failure Handling, Observability, Governance, and Operations

Learning Objectives

• Operate, troubleshoot, document, and improve testing, security, and failure handling.
• Apply observability and governance and operations while preserving reviewable technical evidence.
• Recognize and correct the risk where the technical fix is successful but monitoring, rollback, ownership, or handover remains incomplete.

Detailed Topics

• testing: apply the concept to an operations team automating responses to monitoring alerts and infrastructure events, record the relevant settings or decisions, and explain the operational consequence.
• security: apply the concept to an operations team automating responses to monitoring alerts and infrastructure events, record the relevant settings or decisions, and explain the operational consequence.
• failure handling: apply the concept to an operations team automating responses to monitoring alerts and infrastructure events, record the relevant settings or decisions, and explain the operational consequence.
• observability: apply the concept to an operations team automating responses to monitoring alerts and infrastructure events, record the relevant settings or decisions, and explain the operational consequence.
• governance and operations: apply the concept to an operations team automating responses to monitoring alerts and infrastructure events, record the relevant settings or decisions, and explain the operational consequence.

Instructor Demonstration

The instructor demonstrates testing, security, failure handling, observability, governance, and operations by tracing the relevant architecture, commands, configuration, messages, and evidence. The walkthrough highlights how the technical fix is successful but monitoring, rollback, ownership, or handover remains incomplete and shows how to isolate the cause without masking dependent issues.

Hands-On Exercise

Run an operational review and produce support-ready evidence for Testing, Security, Failure Handling, Observability, Governance, and Operations. Add verified outcomes to the event source integration, tested Ansible Rulebooks, response workflow evidence, and operations guide.

1. Confirm the scope, versions, access, dependencies, and success criteria.
2. Perform the workflow while recording commands, settings, output, and platform events.
3. Test one expected case and one controlled exception specific to this lesson.
4. Retest the correction and document ownership, rollback, and follow-up actions.

Scenario Analysis

• Identify which dependency most strongly influences testing in the stated scenario.
• Compare two approaches for observability and explain the security, reliability, and support trade-offs.
• Decide what evidence must be retained in the event source integration, tested Ansible Rulebooks, response workflow evidence, and operations guide before operational acceptance.

Troubleshooting Guidance

Begin with the first observable difference from the expected result. Check monitoring, troubleshooting, rollback, ownership, and handover separately, then correlate logs, events, commands, and configuration history. Do not accept the initial assumption that the technical fix is successful but monitoring, rollback, ownership, or handover remains incomplete; confirm the cause with a reproducible retest.

Validation Checklist

• The required monitoring, troubleshooting, rollback, ownership, and handover were checked and recorded.
• The normal path and a course-specific exception were tested.
• The event source integration, tested Ansible Rulebooks, response workflow evidence, and operations guide links conclusions to commands, configuration, logs, or other objective evidence.
• Corrective actions, rollback steps, ownership, and handover notes are complete.

Lesson Outcome

Learners can apply Testing, Security, Failure Handling, Observability, Governance, and Operations, explain the observed Red Hat platform behavior, and support the result with a reviewable event source integration, tested Ansible Rulebooks, response workflow evidence, and operations guide.