05 December 2020

#OpenShift

#Openshift

Key Concepts


S.No Topic Sub-Topics
1OpenShiftWhat is OpenShift, Features, OpenShift vs Kubernetes, Use cases, Benefits
2OpenShift ArchitectureMaster node, Worker node, ETCD, API server, Controllers
3OpenShift EditionsOpenShift Origin, OpenShift Container Platform, OpenShift Online, OpenShift Dedicated, Differences
4Installing OpenShiftPrerequisites, Minishift/CRC setup, Installation steps, CLI installation, Verification
5OpenShift CLIoc commands, Login, Project management, Viewing resources, Resource management
6OpenShift Web ConsoleDashboard overview, Navigation, Creating projects, Managing resources, Monitoring
7Projects & NamespacesCreating projects, Viewing projects, Deleting projects, Role assignments, Resource quotas
8OpenShift PodsWhat is a Pod, Pod lifecycle, Creating Pods, Viewing Pod logs, Deleting Pods
9OpenShift DeploymentsDeploymentConfig, Deployment strategies, Scaling deployments, Rollbacks, Monitoring deployments
10OpenShift ServicesClusterIP, NodePort, LoadBalancer, Creating services, Service discovery
11Routes & NetworkingWhat is a route, Creating routes, Exposing services, Path-based routing, TLS termination
12OpenShift BuildConfigWhat is BuildConfig, Source-to-Image (S2I), Docker builds, Binary builds, Triggering builds
13OpenShift ImagesImage streams, Pulling images, Tagging images, Managing image repositories, Updating images
14Secrets & ConfigMapsCreating secrets, Using secrets, Creating ConfigMaps, Using ConfigMaps, Mounting into pods
15OpenShift Persistent StoragePersistentVolume, PersistentVolumeClaim, Storage classes, Dynamic provisioning, Volume mounting
16OpenShift TemplatesCreating templates, Using templates, Parameterized templates, Deploying from templates, Best practices
17OpenShift OperatorsWhat is an Operator, Installing Operators, Custom Resource Definitions, Managing applications, OperatorHub
18OpenShift MonitoringPrometheus, Grafana, Alerts, Metrics, Logging
19OpenShift LoggingCluster logging, EFK stack, Viewing logs, Fluentd, Kibana
20OpenShift SecurityRBAC, Service accounts, SCC (Security Context Constraints), Network policies, Pod security
21OpenShift Quotas & LimitsResource quotas, Limit ranges, Enforcing quotas, Viewing usage, Best practices
22Scaling ApplicationsManual scaling, Autoscaling, Horizontal Pod Autoscaler, Resource metrics, Scaling strategies
23OpenShift CI/CD IntegrationJenkins integration, Pipelines, OpenShift Pipelines (Tekton), Deploy triggers, Best practices
24OpenShift Routes & IngressRoute types, TLS, Path-based routing, Host-based routing, Load balancing
25OpenShift NetworkingCluster networking, SDN types, Network policies, Service mesh integration, Troubleshooting networking
26OpenShift TroubleshootingPod issues, Logs inspection, Event monitoring, Node issues, Common errors
27OpenShift Backup & RestoreETCD backup, Cluster backup, Restore strategies, Persistent volume backup, Disaster recovery
28OpenShift Upgrades & PatchingUpgrade strategies, CLI upgrade, Web console upgrade, Rolling updates, Best practices
29OpenShift Best PracticesResource management, Security, CI/CD pipelines, Monitoring, Scaling strategies
30Hands-on ProjectCreate project, Deploy application, Configure services & routes, Setup persistent storage, Implement CI/CD pipeline

Interview question

Basic Level

  1. What is OpenShift and why is it used?
  2. Difference between OpenShift and Kubernetes.
  3. Key features of OpenShift.
  4. What is OpenShift Origin (OKD)?
  5. What is OpenShift Container Platform (OCP)?
  6. What are OpenShift Editions and their differences?
  7. What is a project in OpenShift?
  8. What is a namespace in OpenShift?
  9. How to log in to OpenShift using CLI?
  10. What is oc command?
  11. How to view OpenShift resources?
  12. How to create a project using CLI?
  13. How to delete a project?
  14. What is the OpenShift Web Console?
  15. How to navigate OpenShift Web Console?
  16. What are pods in OpenShift?
  17. What are nodes in OpenShift?
  18. What is a deployment in OpenShift?
  19. What are services in OpenShift?
  20. Difference between ClusterIP, NodePort, and LoadBalancer services.
  21. What are routes in OpenShift?
  22. What is Source-to-Image (S2I)?
  23. What is BuildConfig in OpenShift?
  24. How to create a pod using CLI?
  25. How to view pod logs?

Intermediate Level

  1. What are deployment strategies in OpenShift?
  2. Difference between rolling, recreate, and blue-green deployment.
  3. How to scale applications manually?
  4. How to enable autoscaling?
  5. What are Horizontal Pod Autoscalers?
  6. What is an ImageStream?
  7. How to update images in OpenShift?
  8. What are ConfigMaps and how to use them?
  9. What are Secrets and how to use them?
  10. How to mount ConfigMaps into pods?
  11. How to mount Secrets into pods?
  12. What is persistent storage in OpenShift?
  13. Difference between PersistentVolume and PersistentVolumeClaim.
  14. How to use storage classes in OpenShift?
  15. How to implement dynamic provisioning of storage?
  16. What are OpenShift templates?
  17. How to create and use templates?
  18. What are Operators in OpenShift?
  19. How to install Operators from OperatorHub?
  20. What are Custom Resource Definitions (CRDs)?
  21. How to manage applications using Operators?
  22. How to monitor pods and nodes?
  23. What is Prometheus in OpenShift?
  24. How to use Grafana dashboards?
  25. What is cluster logging in OpenShift?

Advanced Level

  1. What is RBAC in OpenShift?
  2. What are Service Accounts?
  3. What are Security Context Constraints (SCC)?
  4. How to implement network policies?
  5. How to troubleshoot pod failures?
  6. How to view events in OpenShift?
  7. How to manage image registry in OpenShift?
  8. How to configure routes with TLS termination?
  9. How to configure path-based routing?
  10. How to implement continuous integration using Jenkins?
  11. How to implement pipelines with OpenShift Pipelines (Tekton)?
  12. How to trigger builds automatically?
  13. How to configure resource quotas and limits?
  14. How to manage multi-project deployments?
  15. How to implement application versioning?
  16. How to rollback deployments?
  17. How to use labels and selectors effectively?
  18. How to implement application monitoring with alerts?
  19. How to view metrics using OpenShift monitoring tools?
  20. How to manage secrets securely?
  21. How to implement blue-green deployments?
  22. How to implement canary deployments?
  23. How to debug network issues in OpenShift?
  24. How to integrate OpenShift with external CI/CD tools?
  25. How to backup and restore etcd?

Expert Level

  1. How to implement disaster recovery strategies?
  2. How to handle cluster upgrades and patches?
  3. How to optimize OpenShift performance?
  4. How to configure OpenShift high availability?
  5. How to manage multi-cluster OpenShift environments?
  6. How to implement security best practices in OpenShift?
  7. How to integrate OpenShift with LDAP or Active Directory?
  8. How to implement SSO in OpenShift?
  9. How to use OpenShift with Helm charts?
  10. How to implement service mesh in OpenShift (Istio/OSSM)?
  11. How to manage OpenShift network plugins (SDN/CNI)?
  12. How to implement custom operators?
  13. How to monitor large-scale OpenShift deployments?
  14. How to configure audit logging in OpenShift?
  15. How to integrate OpenShift with GitOps tools (ArgoCD/Flux)?
  16. How to implement persistent storage for stateful applications?
  17. How to optimize image builds and registry usage?
  18. How to implement automated security scanning for images?
  19. How to implement fine-grained role-based access controls?
  20. How to integrate OpenShift with cloud providers (AWS/Azure/GCP)?
  21. How to implement multi-tenancy in OpenShift?
  22. How to handle pod security and compliance requirements?
  23. How to debug complex application failures in production?
  24. How to implement custom CI/CD pipelines with Tekton or Jenkins?
  25. Best practices for maintaining scalable and secure OpenShift clusters.

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