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1. Configure a StatefulSet to deploy a MySQL database with persistent storage. Include steps to define the StatefulSet, create a PersistentVolume (PV) and PersistentVolumeClaim (PVC), and verify the database is running correctly.

2. Use OpenShift CLI to configure and test a Service Account with limited permissions. Create a Role for accessing ConfigMaps, bind it to the Service Account, and validate the access.

3. Migrate all pods from one node to another to free up the first node for maintenance. Ensure minimal disruption during the process and validate the migration.

4. Configure OpenShift to automatically clean up completed Jobs after a specific time. Include steps to modify the TTL for finished Jobs and verify its functionality.

5. Use taints and tolerations to ensure that specific pods are scheduled only on designated nodes. Include YAML definitions for both the node taint and pod tolerations.

6. Set up and test horizontal autoscaling for an application based on custom metrics such as memory usage. Include YAML definitions and steps to simulate load.

7. Configure and validate OpenShift cluster monitoring using Grafana dashboards. Include steps to deploy Grafana and connect it to Prometheus.

8. Configure OpenShift to perform a rolling restart of all pods in a deployment every time the associated ConfigMap changes. Include steps to modify the deployment to achieve this functionality and validate it.

9. Secure OpenShift by enforcing the use of Secrets for storing sensitive data, such as database credentials. Create a Secret, mount it in a pod, and validate its functionality.

10. Use OpenShift to deploy a blue-green application update strategy to minimize downtime during a version upgrade. Include steps to configure and validate the deployment.

11. Create a CronJob to run a cleanup script daily at midnight. Validate that the script executes successfully.

12. Configure OpenShift to restrict resource usage using ResourceQuotas. Define quotas for CPU, memory, and the number of pods in a namespace.

13. Troubleshoot an issue where pods are not starting due to missing NodePorts in a Service configuration.

Fix the Service and validate pod communication.

14. Use OpenShift CLI to monitor cluster health and identify nodes under pressure. Provide steps to analyze and resolve any resource contention issues.

15. Configure OpenShift to send alerts for failed Jobs using Prometheus AlertManager. Include steps to define alert rules and test the alert mechanism.

16. Configure OpenShift to restrict ingress traffic to a specific namespace using Network Policies. Include steps to create a policy that allows traffic only from a specific pod in another namespace.

17. Perform a cluster-wide search for all pods using images older than a specific version and update them.

Provide commands to identify and upgrade the images.

18. Troubleshoot and resolve an issue where a pod is in Pending state due to insufficient CPU or memory resources. Include steps to identify and reallocate resources.

19. Configure an OpenShift Service to route traffic to multiple backends based on the request path. Include steps to create the Service and validate traffic routing.

20. Implement a canary deployment for an application update. Include steps to deploy and monitor the canary version alongside the stable version.

21. Implement a ClusterRole to allow developers to create and delete pods in a specific namespace. Bind this role to a group named dev-group.

22. Diagnose and fix an issue where a Deployment fails due to exceeding the configured ResourceQuota.

23. Use OpenShift metrics to analyze and optimize application performance under load. Include steps to simulate load and monitor metrics through Prometheus.

24. Use OpenShift to configure an external load balancer to expose a service to the internet. Provide steps to create a LoadBalancer service and validate its accessibility.

25. Simulate and fix a crash-loop issue in a pod caused by incorrect environment variables. Provide steps to identify the issue and apply a fix.

26. Create a multi-container pod that includes a primary application and a sidecar container for logging.

Demonstrate how to configure and validate the logging setup.

27. Configure and test OpenShift persistent storage using a dynamic storage class. Include steps to create and use the storage class with a PVC.

28. Troubleshoot a Deployment rollout stuck due to a failing readiness probe. Resolve the issue and ensure the rollout completes successfully.

29. Use OpenShift monitoring to set up alerts for node disk usage exceeding 90%. Include steps to configure Prometheus rules and validate alert functionality.

30. Implement an OpenShift Job to process a file uploaded to a shared volume. Validate that the Job processes the file and terminates successfully.

31. Configure OpenShift to enforce image pull policies that always pull the latest image version when creating or restarting a pod. Validate the configuration by deploying a pod.

32. Perform a rollback to a previous Deployment revision after identifying issues in the latest deployment.

Validate that the rollback is successful.

33. Use OpenShift CLI to scale a StatefulSet horizontally. Verify that each pod maintains its unique identity after scaling.

34. Troubleshoot and resolve an issue where an ingress rule is not directing traffic to the correct backend service. Include validation steps after fixing the issue.

35. Create and test a Kubernetes ConfigMap to store application settings, and inject it into an application pod as a file.

36. Monitor and analyze application performance under high traffic using OpenShift metrics and Grafana dashboards. Include steps to set up traffic simulation and analyze results.

37. Implement OpenShift Autoscaler to scale pods dynamically based on CPU usage. Validate scaling behavior under simulated CPU load.

38. Migrate all resources from one namespace to another. Include steps to export, modify, and reapply the configurations.

39. Set up and validate OpenShift pod affinity to ensure that pods are scheduled on the same node.

40. Configure OpenShift taints and tolerations to reserve a node for specific pods. Validate that only the designated pods are scheduled on the reserved node.