DO316 – Managing Virtual Machines with Red Hat OpenShift Virtualization — Lesson 3: Templates, Cloning, Snapshots, Live Migration, Scheduling, and High Availability

Learning Objectives

• Explain the structures, services, data, settings, roles, and dependencies governing templates and cloning.
• Implement and validate snapshots, live migration, and scheduling and HA using reviewable evidence.
• Evaluate the condition where operators cannot explain the outcome because logs, commands, settings, and acceptance evidence were not captured consistently and select a proportionate corrective response.

Detailed Topics

• templates applied to the course scenario, expected platform behavior, dependencies, controls, and evidence.
• cloning applied to the course scenario, expected platform behavior, dependencies, controls, and evidence.
• snapshots applied to the course scenario, expected platform behavior, dependencies, controls, and evidence.
• live migration applied to the course scenario, expected platform behavior, dependencies, controls, and evidence.
• scheduling and HA applied to the course scenario, expected platform behavior, dependencies, controls, and evidence.

Instructor Demonstration

The instructor traces a virtualization team onboarding traditional virtual machines to a shared OpenShift platform. The walkthrough connects navigation, commands, configuration logic, system messages, and evidence captured in the OpenShift Virtualization operating model, VM deployment records, migration plan, and recovery checklist. It also tests the exception where operators cannot explain the outcome because logs, commands, settings, and acceptance evidence were not captured consistently.

Hands-On Exercise

Complete a controlled Red Hat exercise covering Templates, Cloning, Snapshots, Live Migration, Scheduling, and High Availability and preserve the verified result in the OpenShift Virtualization operating model, VM deployment records, migration plan, and recovery checklist.

1. Confirm scope, prerequisites, versions, identities, dependencies, and acceptance criteria.
2. Execute the workflow while recording commands, settings, outputs, events, and system messages.
3. Test normal behavior, one boundary condition, and the stated exception.
4. Document corrections, evidence, ownership, retest criteria, rollback, and handover actions.

Scenario Analysis

• Identify which object, service, policy, setting, or sequence most strongly influences templates.
• Compare two defensible responses and explain technical, security, operational, and support trade-offs.
• Determine how the OpenShift Virtualization operating model, VM deployment records, migration plan, and recovery checklist should be approved, retained, retested, and updated.

Troubleshooting Guidance

Start where expected behavior first differs from the observed result. Check prerequisites, identity, configuration order, version compatibility, connectivity, status, resource limits, and evidence separately. Treat “operators cannot explain the outcome because logs, commands, settings, and acceptance evidence were not captured consistently” as a hypothesis until commands, logs, settings, and retest outcomes confirm the cause.

Validation Checklist

• Required platform components, identities, permissions, settings, and dependencies are present.
• The OpenShift Virtualization operating model, VM deployment records, migration plan, and recovery checklist connects each conclusion to objective, reviewable evidence.
• Normal processing, a boundary condition, dependency behavior, and the stated exception were tested.
• Corrections, ownership, retest criteria, rollback, documentation, and operational handover are complete.

Lesson Outcome

Learners can apply Templates, Cloning, Snapshots, Live Migration, Scheduling, and High Availability, explain the resulting platform behavior, and defend the outcome through the OpenShift Virtualization operating model, VM deployment records, migration plan, and recovery checklist.