CL170 – OpenStack Administration: Control Plane Management — Lesson 1: OpenShift Architecture, OpenStack Operators, Resources, Interfaces, and Health

Learning Objectives

• Explain the architecture, purpose, dependencies, and expected behavior of OpenShift architecture, OpenStack operators, and custom resources.
• Apply administration interfaces and health assessment while preserving reviewable technical evidence.
• Recognize and correct the condition where an unstated prerequisite or ownership gap causes the initial design to be incomplete.

Detailed Topics

• OpenShift architecture: apply the concept to the course scenario, identify dependencies and controls, and record objective evidence of the result.
• OpenStack operators: apply the concept to the course scenario, identify dependencies and controls, and record objective evidence of the result.
• custom resources: apply the concept to the course scenario, identify dependencies and controls, and record objective evidence of the result.
• administration interfaces: apply the concept to the course scenario, identify dependencies and controls, and record objective evidence of the result.
• health assessment: apply the concept to the course scenario, identify dependencies and controls, and record objective evidence of the result.

Instructor Demonstration

The instructor demonstrates openshift architecture, openstack operators, resources, interfaces, and health by tracing architecture, commands, configuration, system messages, and evidence. The walkthrough tests how an unstated prerequisite or ownership gap causes the initial design to be incomplete and explains how to isolate the cause without masking related issues.

Hands-On Exercise

Establish a controlled baseline for OpenShift Architecture, OpenStack Operators, Resources, Interfaces, and Health and add the verified result to the control-plane health assessment, service configuration records, connectivity evidence, and recovery runbook.

1. Confirm scope, versions, access, dependencies, assumptions, and acceptance criteria.
2. Perform the workflow while recording commands, configuration, output, events, and decisions.
3. Test the normal path and one course-specific exception or boundary condition.
4. Retest the correction and document rollback, ownership, and follow-up actions.

Scenario Analysis

• Identify which dependency most strongly influences OpenShift architecture in the stated scenario.
• Compare two approaches for administration interfaces and explain the security, reliability, performance, and support trade-offs.
• Decide what evidence must be retained in the control-plane health assessment, service configuration records, connectivity evidence, and recovery runbook before operational acceptance.

Troubleshooting Guidance

Begin with the first observable difference from the expected result. Check architecture, scope, identities, prerequisites, and starting conditions separately, then correlate logs, events, commands, metrics, and configuration history. Treat the assumption that an unstated prerequisite or ownership gap causes the initial design to be incomplete as a hypothesis until a reproducible retest confirms the cause.

Validation Checklist

• The required architecture, scope, identities, prerequisites, and starting conditions were checked and recorded.
• The normal path and a course-specific exception were tested.
• The control-plane health assessment, service configuration records, connectivity evidence, and recovery runbook links conclusions to commands, configuration, logs, metrics, or other objective evidence.
• Corrective actions, rollback, ownership, and handover notes are complete.

Lesson Outcome

Learners can apply OpenShift Architecture, OpenStack Operators, Resources, Interfaces, and Health, explain the observed platform behavior, and support the result with a reviewable control-plane health assessment, service configuration records, connectivity evidence, and recovery runbook.