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RedHat EX316 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Deploy and Understand OpenShift Virtualization | - Deploy OpenShift Virtualization Operator
|
| Configure Storage for Virtual Machines | - Persistent storage management
|
| High Availability and Maintenance | - Node and workload management
|
| Use Templates and Advanced Management | - Snapshots, cloning, and migration
|
| Provision and Manage Virtual Machines | - Create, start, stop, and access virtual machines
|
| Configure Networking for Virtual Machines | - Kubernetes networking configuration
|
RedHat Red Hat Certified Specialist in OpenShift Virtualization Sample Questions:
How do you verify a VM's network configuration after it starts?
Reveal Solution Discussion 0Correct Answer:
See the Explanation.
Explanation:
1. Run: oc get vmi
2. Describe VMI: oc describe vmi <vm-name>
3. Look under interfaces: section for IP address.
4. Use virtctl console <vm> to access shell and run ip a
5. Confirm the pod network IP matches the OpenShift SDN subnet.
How do you restore a backed-up virtual machine using Velero CLI?
Reveal Solution Discussion 0Correct Answer:
See the Explanation.
Explanation:
1. Run:
velero restore create --from-backup vm-backup --wait
2. Monitor progress: velero restore get
3. Check logs: velero restore logs <restore-name>
4. Confirm restored VM exists: oc get vm
5. Start the VM if it's not auto-started.
How do you use tolerations to allow VMs on tainted nodes?
Reveal Solution Discussion 0Correct Answer:
See the Explanation.
Explanation:
1. Taint a node:
oc adm taint nodes worker-2 dedicated=vm:NoSchedule
2. Add to VM YAML:
template:
spec:
tolerations:
- key: dedicated
value: vm
effect: NoSchedule
3. VM will now schedule on tainted node.
4. Used for isolating workloads.
5. Confirm with: oc describe node worker-2
How do you configure a VM with node affinity to prefer a specific node?
Reveal Solution Discussion 0Correct Answer:
See the Explanation.
Explanation:
1. Edit VM YAML and add:
affinity:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: kubernetes.io/hostname
operator: In
values:
- worker-1
2. Apply changes: oc apply -f vm.yaml
3. Start the VM: virtctl start <vm>
4. Confirm scheduled node via oc get vmi -o wide.
5. VM will run only on worker-1.
How do you manually create a VolumeSnapshot of a VM disk PVC?
Reveal Solution Discussion 0Correct Answer:
See the Explanation.
Explanation:
1. Find the PVC: oc get pvc
2. Create a VolumeSnapshot:
apiVersion: snapshot.storage.k8s.io/v1
kind: VolumeSnapshot
metadata:
name: mydisk-snapshot
spec:
volumeSnapshotClassName: csi-rbdplugin-
snapclass source:
persistentVolumeClaimName: test-vm-disk
3. Apply and verify with: oc get volumesnapshot
4. Used for out-of-band recovery.
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