DO156: Red Hat OpenShift Virtualization Administration I — Lesson 3: Networking, Storage, Data Volumes, Templates, Cloning, and Snapshots

Learning Objectives

• Evaluate integration, security, resilience, performance, and exceptions affecting VM networking, persistent storage, and data volumes.
• Apply templates and cloning and snapshots while preserving reviewable technical evidence.
• Recognize and correct the condition where the implementation succeeds normally but fails during dependency loss, scale, policy enforcement, or recovery.

Detailed Topics

• VM networking: apply the concept to the course scenario, identify dependencies and controls, and record objective evidence of the result.
• persistent storage: apply the concept to the course scenario, identify dependencies and controls, and record objective evidence of the result.
• data volumes: apply the concept to the course scenario, identify dependencies and controls, and record objective evidence of the result.
• templates and cloning: apply the concept to the course scenario, identify dependencies and controls, and record objective evidence of the result.
• snapshots: apply the concept to the course scenario, identify dependencies and controls, and record objective evidence of the result.

Instructor Demonstration

The instructor demonstrates networking, storage, data volumes, templates, cloning, and snapshots by tracing architecture, commands, configuration, system messages, and evidence. The walkthrough tests how the implementation succeeds normally but fails during dependency loss, scale, policy enforcement, or recovery and explains how to isolate the cause without masking related issues.

Hands-On Exercise

Introduce a realistic boundary condition and test corrective behavior for Networking, Storage, Data Volumes, Templates, Cloning, and Snapshots and add the verified result to the virtualization operator baseline, VM build records, networking and storage tests, and support checklist.

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 VM networking in the stated scenario.
• Compare two approaches for templates and cloning and explain the security, reliability, performance, and support trade-offs.
• Decide what evidence must be retained in the virtualization operator baseline, VM build records, networking and storage tests, and support checklist before operational acceptance.

Troubleshooting Guidance

Begin with the first observable difference from the expected result. Check integration, security, boundary conditions, resilience, and performance separately, then correlate logs, events, commands, metrics, and configuration history. Treat the assumption that the implementation succeeds normally but fails during dependency loss, scale, policy enforcement, or recovery as a hypothesis until a reproducible retest confirms the cause.

Validation Checklist

• The required integration, security, boundary conditions, resilience, and performance were checked and recorded.
• The normal path and a course-specific exception were tested.
• The virtualization operator baseline, VM build records, networking and storage tests, and support checklist 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 Networking, Storage, Data Volumes, Templates, Cloning, and Snapshots, explain the observed platform behavior, and support the result with a reviewable virtualization operator baseline, VM build records, networking and storage tests, and support checklist.