120+ OpenShift Interview Questions and Answers [2025 Updated]

Red Hat OpenShift, a Kubernetes-based container platform, streamlines application development, deployment, and management with enterprise-grade features like CI/CD pipelines, Source-to-Image (S2I), and Operators. This guide compiles 121 frequently asked OpenShift interview questions for 2025, focusing on container orchestration, security, observability, and GitOps. Tailored for DevOps engineers and cloud architects, it provides practical insights and code examples to prepare for technical interviews in regulated industries like finance and healthcare.

Platform Fundamentals

1. What is Red Hat OpenShift?

OpenShift, developed by Red Hat, is a Kubernetes-based container platform enhancing application development and deployment. It integrates CI/CD pipelines, a developer-friendly console, and security features like RBAC. Built on Docker and Kubernetes, it supports hybrid cloud deployments, ensuring scalability and compliance for enterprise applications in regulated industries like finance.

2. Why is OpenShift preferred over vanilla Kubernetes?

• Provides integrated CI/CD with BuildConfig.
• Offers Source-to-Image for automated builds.
• Enhances security with SCC and RBAC.
• Simplifies management with web console.

3. When should you use OpenShift Dedicated?

OpenShift Dedicated is ideal for single-tenant, high-availability clusters managed by Red Hat, used when organizations need simplified operations and premium support.

It suits regulated industries requiring secure, compliant environments with automated updates and 24/7 support, ensuring minimal operational overhead.

4. Where is OpenShift’s control plane hosted?

• In master nodes managing cluster orchestration.
• Hosts API server, etcd, and controllers.
• Distributed across regions for high availability.
• Accessible via CLI or web console.

5. Who manages OpenShift clusters?

DevOps engineers and cluster administrators manage OpenShift clusters, configuring nodes, pods, and policies via oc CLI or web console. They ensure scalability, security, and compliance, using tools like Operators and Terraform for automation, critical for enterprise environments in 2025.

6. Which component handles external traffic?

• OpenShift Router directs ingress traffic.
• Maps routes to services for accessibility.
• Supports TLS termination for security.
• Integrates with load balancers.

7. How does OpenShift simplify deployments?

OpenShift automates deployments with BuildConfig and DeploymentConfig, streamlining CI/CD pipelines. It uses S2I for image creation and supports rollback for reliability.

Integration with GitOps ensures version-controlled, auditable workflows, critical for regulated industries requiring consistent deployments.

• Automates builds with S2I.
• Supports rollbacks.
• Integrates with GitOps.

8. What is a pod in OpenShift?

• Smallest deployable unit with one or more containers.
• Shares network and storage resources.
• Managed by Kubernetes for scalability.
• Supports microservices architectures.

9. Why is Source-to-Image important?

S2I automates container image creation from source code, reducing manual effort in CI/CD pipelines. It injects code into builder images, ensuring consistent builds. Integration with Git and audit logging supports compliance, making it essential for DevOps teams in regulated industries like healthcare.

10. When is OpenShift Container Platform used?

• For on-premises or private cloud deployments.
• When organizations need full Kubernetes control.
• Supports hybrid cloud with Anthos.
• Ensures compliant, scalable applications.

11. How does OpenShift integrate with GitOps?

OpenShift integrates with GitOps using tools like ArgoCD, storing configurations in Git for version control. Declarative YAML files automate deployments, ensuring consistency. Audit trails support compliance, making it ideal for regulated industries requiring traceable, automated workflows.

yaml apiVersion: argoproj.io/v1alpha1 kind: Application metadata: name: my-app spec: source: repoURL: https://github.com/my-repo path: manifests

CI/CD Automation

12. What is a BuildConfig?

• Defines build processes for container images.
• Triggers builds via Git commits or webhooks.
• Integrates with S2I for automation.
• Ensures auditable CI/CD pipelines.

13. Why use DeploymentConfig?

DeploymentConfig, an OpenShift-specific resource, manages application deployments with triggers and rollback capabilities, unlike Kubernetes Deployments. It ensures reliable updates in CI/CD pipelines.

Integration with GitOps and audit logging supports compliance, critical for regulated industries like finance.

14. When do you scale applications?

• During high traffic or resource spikes.
• Using oc scale for manual scaling.
• With HPA for automatic scaling.
• Monitored via Prometheus for performance.

15. Where are build logs stored?

• In OpenShift’s internal logging system.
• Accessible via oc logs command.
• Integrated with EFK stack for analysis.
• Supports compliance with audit trails.

16. Who configures CI/CD pipelines?

DevOps engineers configure CI/CD pipelines using BuildConfig and Jenkins or Tekton. They automate builds, tests, and deployments, ensuring scalability and compliance. Integration with GitOps and Prometheus supports auditable, observable workflows in regulated industries like healthcare.

17. Which tool monitors OpenShift clusters?

Prometheus monitors cluster metrics like CPU and memory, integrating with Grafana for dashboards. It supports real-time alerting, ensuring observability in CI/CD pipelines.

Audit logging aligns with compliance, making it critical for DevOps teams in regulated environments.

18. How does OpenShift handle rollbacks?

DeploymentConfig enables rollbacks to previous versions if deployments fail, using oc rollback. It ensures minimal downtime in CI/CD pipelines. Integration with GitOps tracks changes, supporting compliance in regulated industries requiring reliable, auditable deployments in 2025.

bash oc rollback dc/my-app

19. What is the role of ImageStreams?

• Tracks container image versions.
• Triggers automatic updates on changes.
• Integrates with CI/CD for deployments.
• Ensures version control compliance.

20. Why is RBAC important?

RBAC enforces least privilege access, defining roles for users and service accounts. It integrates with SCC for pod security, ensuring compliance in CI/CD pipelines. This is critical for DevOps teams in regulated industries like finance, where auditable access control is mandatory.

21. When is a Route created?

Routes are created to expose services externally, mapping URLs to pods for accessibility. They support TLS for security, used in CI/CD for public-facing applications.

Integration with load balancers ensures scalability, critical for regulated industries requiring secure access.

22. How does OpenShift support DevSecOps?

OpenShift enhances DevSecOps with SCC, RBAC, and image scanning, embedding security in CI/CD pipelines. It ensures compliance with audit logging and automated policy enforcement.

Integration with GitOps and Prometheus supports secure, observable workflows, critical for regulated industries like healthcare.

• Embeds security in pipelines.
• Supports compliance.
• Integrates with GitOps.

Container Management

23. What is an Operator?

• Automates application lifecycle management.
• Uses CRDs for custom resources.
• Simplifies complex deployments in CI/CD.
• Ensures consistency and compliance.

24. Why use persistent storage?

Persistent storage ensures data retention for stateful applications, using PVs and PVCs. It integrates with CI/CD for reliable data pipelines, supporting compliance with audit logging. This is critical for DevOps teams in regulated industries like finance requiring durable storage in 2025.

25. When do you use StatefulSets?

• For stateful apps needing stable identities.
• Ensures ordered pod deployment.
• Integrates with PVCs for storage.
• Supports database deployments.

26. Where are pods deployed?

• On worker nodes in the cluster.
• Managed by Kubernetes scheduler.
• Monitored via Prometheus for performance.
• Automated with DeploymentConfig.

27. Who manages Operators?

DevOps engineers deploy and configure Operators, automating complex application management. They use OperatorHub for pre-built solutions, ensuring scalability and compliance.

Integration with GitOps supports auditable deployments, critical for regulated industries like healthcare.

28. Which component stores cluster state?

• etcd, a distributed key-value store.
• Stores configuration and resource data.
• Backed up for disaster recovery.
• Ensures high availability.

29. How does OpenShift handle scaling?

OpenShift supports manual scaling with oc scale and automatic scaling via HPA, using metrics like CPU. Integration with Prometheus ensures observability, while GitOps tracks changes. This ensures compliant, scalable CI/CD pipelines for high-traffic applications in regulated industries like finance.

bash oc scale dc/my-app --replicas=3

30. What is the difference between Deployment and DeploymentConfig?

Deployment, a Kubernetes resource, manages pod replicas with basic rollout strategies. DeploymentConfig, OpenShift-specific, offers triggers and rollbacks for enhanced control in CI/CD pipelines.

Both support scaling, but DeploymentConfig ensures auditable, compliant deployments in regulated environments.

• Deployment: Kubernetes-native, simpler.
• DeploymentConfig: OpenShift-specific, advanced.
• Both integrate with CI/CD.

31. Why is the OpenShift Router critical?

• Directs external traffic to services.
• Supports TLS termination for security.
• Enables load balancing for scalability.
• Ensures accessible applications.

32. When do you use Init Containers?

Init Containers run setup tasks before application containers, such as initializing databases or configurations. They ensure proper startup in CI/CD pipelines.

Used for stateful apps, they support compliance by ensuring predictable deployments in regulated industries.

33. How does OpenShift ensure security?

OpenShift enforces security with SCC, RBAC, and image scanning, embedding DevSecOps in CI/CD pipelines. Audit logging ensures compliance, critical for regulated industries.

Integration with GitOps and Prometheus supports secure, observable workflows, protecting applications in finance or healthcare.

• Uses SCC and RBAC.
• Supports DevSecOps.
• Ensures compliance.

Security Practices

34. What is a Security Context Constraint?

• Defines pod security policies.
• Restricts privileged container actions.
• Integrates with RBAC for access control.
• Ensures DevSecOps compliance.

35. Why is image scanning used?

Image scanning detects vulnerabilities in container images before deployment, ensuring secure CI/CD pipelines. Integration with Clair and audit logging supports compliance, critical for DevOps teams in regulated industries like healthcare requiring secure, auditable deployments in 2025.

36. When is a Secret created?

• To store sensitive data like passwords.
• Used in CI/CD for secure configurations.
• Managed via oc create secret.
• Ensures compliance with encryption.

37. Where are Routes configured?

• In OpenShift web console or CLI.
• Map external URLs to services.
• Support TLS for secure access.
• Automated via GitOps.

38. Who configures SCCs?

Cluster administrators configure SCCs to enforce pod security, restricting privileged actions. They integrate with RBAC for access control, ensuring compliance in CI/CD pipelines.

Automation with Terraform supports auditable configurations, critical for regulated industries like finance.

39. Which tool automates OpenShift deployments?

• Tekton for CI/CD pipelines.
• Integrates with Git for automation.
• Supports auditable workflows.
• Ensures scalable deployments.

40. How does OpenShift manage networking?

OpenShift uses SDN to manage pod communication, supporting network policies for traffic control. It integrates with Routes for external access and Prometheus for monitoring. This ensures secure, observable networking in CI/CD pipelines, critical for compliant applications in regulated industries like healthcare.

yaml kind: NetworkPolicy apiVersion: networking.k8s.io/v1 metadata: name: allow-app spec: podSelector: matchLabels: app: my-app

41. What is the role of the OpenShift Registry?

• Stores and manages container images.
• Integrates with S2I for builds.
• Supports image scanning for security.
• Ensures compliant CI/CD.

42. Why is Prometheus used?

Prometheus monitors cluster metrics like CPU and memory, providing real-time insights via Grafana dashboards. It supports alerting for incident response in CI/CD pipelines.

Integration with GitOps ensures observability, critical for compliant workflows in regulated industries.

43. When do you use OpenShift Pipelines?

• For automating CI/CD with Tekton.
• Triggers builds on code changes.
• Integrates with GitOps for version control.
• Supports compliant deployments.

44. How does OpenShift support hybrid cloud?

OpenShift, with Anthos, enables consistent Kubernetes deployments across on-premises and cloud environments. It supports CI/CD with GitOps for automation and compliance.

Integration with Prometheus ensures observability, making it ideal for regulated industries requiring unified, auditable workflows.

• Uses Anthos for consistency.
• Supports GitOps automation.
• Ensures compliance.

Observability Tools

45. What is the EFK stack?

• Elasticsearch, Fluentd, Kibana for logging.
• Centralizes logs for analysis.
• Integrates with CI/CD for debugging.
• Supports compliance with audit trails.

46. Why is Grafana used in OpenShift?

Grafana visualizes Prometheus metrics, creating dashboards for cluster performance. It supports real-time monitoring, integrating with CI/CD for observability. Its auditability ensures compliance, making it critical for DevOps teams in regulated industries like finance requiring actionable insights in 2025.

47. When do you use oc commands?

oc commands are used to manage OpenShift resources like pods, services, and routes via CLI, enabling automation in CI/CD pipelines.

They support debugging, scaling, and configuration, ensuring auditable workflows in regulated environments.

48. Where are metrics stored?

• In Prometheus for time-series data.
• Accessible via Grafana dashboards.
• Integrated with EFK for logging.
• Supports observability in CI/CD.

49. Who monitors cluster health?

• DevOps engineers using Prometheus.
• Cluster admins for resource allocation.
• Security teams for compliance checks.
• Automated via GitOps.

50. Which service supports log aggregation?

Fluentd aggregates logs in the EFK stack, centralizing data for analysis. It integrates with Elasticsearch and Kibana for real-time insights in CI/CD pipelines.

Audit logging ensures compliance, critical for regulated industries like healthcare.

51. How does OpenShift handle failures?

OpenShift ensures high availability with self-healing pods and replication controllers. It uses liveness probes to restart failed containers and rollbacks for deployment issues.

Integration with Prometheus and GitOps supports observability and compliance, critical for regulated industries.

• Uses liveness probes.
• Supports rollbacks.
• Ensures observability.

52. What is the role of ConfigMaps?

• Stores non-sensitive configuration data.
• Decouples configs from pods.
• Supports dynamic updates in CI/CD.
• Ensures flexible deployments.

53. Why is OpenShift’s web console used?

OpenShift’s web console provides a user-friendly interface for managing resources, monitoring performance, and configuring CI/CD pipelines. It integrates with Prometheus and GitOps for observability and automation, ensuring compliance. This simplifies operations for DevOps teams in regulated industries like finance requiring intuitive management tools.

54. When is a project created?

• To isolate resources for teams or apps.
• For environment separation (dev, prod).
• Using oc new-project command.
• Ensures compliance with RBAC.

55. How does OpenShift support blue-green deployments?

Blue-green deployments minimize downtime by running two environments, switching traffic after testing. OpenShift uses Routes and DeploymentConfig for seamless transitions, supporting CI/CD.

Integration with GitOps ensures auditable rollouts, critical for regulated industries like healthcare.

• Reduces downtime.
• Uses Routes for switching.
• Supports compliance.

Data and Storage

56. What is a Persistent Volume?

• Represents cluster storage resources.
• Supports stateful apps with durability.
• Managed via PVCs for access.
• Integrates with CI/CD pipelines.

57. Why is persistent storage critical?

Persistent storage ensures data retention for stateful applications like databases, using PVs and PVCs. It supports CI/CD with reliable data pipelines and compliance via audit logging.

Critical for regulated industries like finance, it ensures data availability and integrity.

58. When do you use PVCs?

• To request storage for pods.
• Bind to PVs for data access.
• Support stateful app deployments.
• Ensure compliance with storage policies.

59. Where is etcd backed up?

• In external storage for disaster recovery.
• Using etcdctl snapshot save command.
• Integrated with CI/CD for automation.
• Ensures cluster state recovery.

60. Who manages storage classes?

Cluster administrators define storage classes to provision PVs dynamically, ensuring scalability for stateful apps. Integration with Terraform automates configurations, supporting compliance in CI/CD pipelines for regulated industries like healthcare requiring reliable storage management.

61. Which tool provisions storage?

OpenShift Container Storage (OCS) provisions dynamic storage, integrating with PVs and PVCs for stateful apps. It supports scalability and compliance in CI/CD pipelines.

Used with external providers like Ceph, it ensures reliable storage for regulated industries.

62. How does OpenShift handle disaster recovery?

OpenShift ensures disaster recovery with etcd backups, multi-region clusters, and replication controllers. It uses oc commands for restoration and Prometheus for monitoring.

Integration with GitOps ensures auditable recovery, critical for regulated industries like finance.

• Backs up etcd.
• Uses replication controllers.
• Ensures compliance.

63. What is the difference between Routes and Ingress?

• Routes: OpenShift-specific, support TLS.
• Ingress: Kubernetes-native, less integrated.
• Routes offer advanced routing options.
• Both expose services externally.

64. Why is OpenShift’s SDN important?

• Manages pod-to-pod communication.
• Supports network policies for security.
• Integrates with Routes for access.
• Ensures observable, compliant networking.

65. When is a Service created?

Services are created to expose pods internally, enabling communication within the cluster. They support load balancing and integrate with Routes for external access.

Used in CI/CD pipelines, they ensure scalable, compliant networking for regulated industries.

66. How does OpenShift support observability?

OpenShift provides observability with Prometheus for metrics, EFK for logging, and Grafana for visualization. These integrate with CI/CD for real-time insights and compliance.

Audit logging ensures traceability, critical for regulated industries like healthcare requiring robust monitoring.

• Uses Prometheus and EFK.
• Supports observability.
• Ensures compliance.

Networking Solutions

67. What is a NetworkPolicy?

• Controls pod traffic for security.
• Defines ingress/egress rules.
• Integrates with SDN for enforcement.
• Supports DevSecOps compliance.

68. Why is cluster autoscaling used?

Cluster autoscaling adjusts node counts based on workload, ensuring cost efficiency and performance. It integrates with Prometheus for monitoring and GitOps for automation, supporting compliant CI/CD pipelines in regulated industries like finance requiring scalable infrastructure in 2025.

69. When do you use OpenShift Serverless?

• For event-driven, auto-scaling apps.
• Based on Knative for simplicity.
• Integrates with CI/CD pipelines.
• Ensures cost-efficient deployments.

70. Where are Secrets stored?

• In etcd with encryption.
• Accessible via oc commands.
• Integrated with CI/CD for security.
• Supports compliance with audit logging.

71. Who configures Routes?

DevOps engineers configure Routes to expose services externally, using oc commands or the web console. They ensure TLS and load balancing for secure access.

Integration with GitOps supports auditable configurations, critical for regulated industries.

72. Which tool supports blue-green deployments?

DeploymentConfig enables blue-green deployments, switching traffic between environments for zero-downtime updates. It integrates with Routes for seamless transitions in CI/CD pipelines.

Audit logging ensures compliance, critical for regulated industries like healthcare.

73. How does OpenShift manage resource quotas?

• Sets limits via ResourceQuota objects.
• Controls CPU, memory, and pods.
• Ensures fair resource allocation.
• Supports compliance with monitoring.

74. What is the role of OpenShift Pipelines?

OpenShift Pipelines, based on Tekton, automates CI/CD workflows, triggering builds on code changes. It integrates with GitOps for version control and Prometheus for observability, ensuring compliant, scalable deployments in regulated industries like finance requiring automated pipelines in 2025.

75. Why is OpenShift’s CLI important?

• oc CLI manages resources like pods.
• Automates tasks in CI/CD pipelines.
• Supports debugging and scaling.
• Ensures auditable workflows.

76. When do you use OpenShift Online?

OpenShift Online, a public cloud service, is used for rapid application development and hosting, ideal for startups or small teams needing minimal infrastructure management.

It supports CI/CD with automated scaling, ensuring compliance for regulated industries.

77. How does OpenShift handle load balancing?

OpenShift uses the Router for load balancing, distributing traffic across pods via Routes. It supports sticky sessions and TLS for secure, scalable access.

Integration with Prometheus ensures observability, critical for compliant CI/CD pipelines in regulated industries.

• Uses Router for traffic distribution.
• Supports scalability.
• Ensures compliance.

78. What is the difference between OpenShift and OpenStack?

• OpenShift: PaaS for container orchestration.
• OpenStack: IaaS for VM and storage management.
• OpenShift uses Kubernetes; OpenStack manages infrastructure.
• Both support hybrid cloud.

79. Why is OpenShift’s registry secure?

OpenShift’s internal registry uses image scanning and RBAC to ensure secure storage and access. Integration with Clair detects vulnerabilities, while audit logging supports compliance. This is critical for DevOps teams in regulated industries like healthcare requiring secure CI/CD pipelines in 2025.

80. When do you use canary deployments?

• To test new versions with minimal users.
• Using Routes for traffic splitting.
• Integrates with CI/CD for updates.
• Reduces deployment risks.

81. Where are Operators installed?

• From OperatorHub in the web console.
• Deployed via YAML or CLI.
• Managed by cluster administrators.
• Automate complex app management.

82. Who manages network policies?

Cluster administrators configure network policies to control pod traffic, ensuring security in CI/CD pipelines. They use YAML to define rules, integrating with SDN for enforcement.

Automation with GitOps supports compliance, critical for regulated industries like finance.

83. Which service supports external access?

Routes expose services externally, mapping URLs to pods with TLS for security. They integrate with load balancers for scalability in CI/CD pipelines.

Audit logging ensures compliance, critical for regulated industries requiring secure access.

84. How does OpenShift support A/B testing?

• Uses Routes for traffic splitting.
• Tests multiple app versions simultaneously.
• Integrates with CI/CD for automation.
• Ensures low-risk deployments.

Serverless Architecture

85. What is OpenShift Serverless?

• Based on Knative for event-driven apps.
• Auto-scales containers based on demand.
• Integrates with CI/CD for automation.
• Supports cost-efficient deployments.

86. Why is OpenShift’s logging critical?

OpenShift’s EFK stack centralizes logs for debugging and compliance, integrating with CI/CD pipelines for real-time analysis. It ensures auditability for regulated industries like healthcare.

Integration with Prometheus and Grafana enhances observability, supporting robust monitoring in 2025.

87. When do you use OpenShift Dedicated?

OpenShift Dedicated provides managed, single-tenant clusters for organizations needing high availability and minimal operations. It suits regulated industries requiring secure, compliant environments with automated updates and 24/7 support, ensuring scalable CI/CD pipelines in 2025.

88. How does OpenShift handle autoscaling?

OpenShift uses HPA to scale pods based on CPU or memory metrics, monitored by Prometheus. It integrates with GitOps for auditable scaling in CI/CD pipelines.

This ensures cost-efficient, compliant workflows for high-traffic applications in regulated industries like finance.

• Uses HPA for scaling.
• Monitors with Prometheus.
• Ensures compliance.

89. What is the role of the API server?

• Handles RESTful API requests.
• Manages cluster resource operations.
• Integrates with RBAC for security.
• Ensures auditable interactions.

90. Why is OpenShift’s multi-tenancy used?

OpenShift’s projects isolate resources for teams, enhancing multi-tenancy with RBAC and SCC. This ensures secure, compliant CI/CD pipelines for multiple applications.

Integration with GitOps supports auditable workflows, critical for regulated industries like healthcare.

91. When do you use OpenShift Origin?

• For community-driven, open-source deployments.
• Ideal for testing or development.
• Supports CI/CD with S2I.
• Ensures flexible, scalable setups.

92. Where is cluster configuration stored?

• In etcd for state persistence.
• Accessible via oc commands.
• Backed up for disaster recovery.
• Supports compliance with auditing.

93. Who uses OpenShift’s web console?

DevOps engineers, developers, and administrators use the web console to manage resources, monitor performance, and configure CI/CD pipelines. It integrates with Prometheus for observability and GitOps for automation, ensuring compliance in regulated industries like finance requiring intuitive management tools.

94. Which tool automates storage provisioning?

OCS automates storage provisioning with dynamic PVs, integrating with PVCs for stateful apps. It supports scalability and compliance in CI/CD pipelines.

Used with Ceph or NetApp, it ensures reliable storage for regulated industries.

95. How does OpenShift support compliance?

• Uses RBAC and SCC for security.
• Provides audit logging for traceability.
• Integrates with GitOps for automation.
• Ensures GDPR and industry compliance.

96. What is the role of the Kubelet?

• Runs on nodes to manage pods.
• Communicates with API server.
• Ensures pod health and execution.
• Supports scalable deployments.

97. Why is OpenShift’s OperatorHub used?

OperatorHub provides pre-built Operators, simplifying complex application management. It supports CI/CD with automated deployments and compliance via audit logging.

Critical for DevOps teams in regulated industries, it ensures scalable, auditable workflows.

98. When is a pod stuck in CrashLoopBackOff?

A pod enters CrashLoopBackOff when it repeatedly fails, often due to misconfigurations or missing dependencies. Debugging with oc logs identifies issues in CI/CD pipelines.

Integration with Prometheus ensures observability, critical for regulated industries requiring reliable deployments.

99. How does OpenShift handle resource limits?

OpenShift sets resource limits via LimitRange and ResourceQuota, controlling CPU and memory usage. It ensures fair allocation and compliance in CI/CD pipelines.

Integration with Prometheus monitors usage, supporting scalable, auditable workflows in regulated industries.

• Sets CPU/memory limits.
• Monitors with Prometheus.
• Ensures compliance.

100. What is the difference between OpenShift Online and Dedicated?

• Online: Public cloud, multi-tenant.
• Dedicated: Single-tenant, managed clusters.
• Online for small teams; Dedicated for enterprises.
• Both support CI/CD.

Advanced Strategies

101. Why is OpenShift’s multi-cloud support used?

OpenShift, with Anthos, enables consistent deployments across GCP, AWS, and on-premises, supporting hybrid CI/CD pipelines. It ensures compliance with audit logging and GitOps, making it critical for regulated industries like finance requiring flexible, auditable workflows in 2025.

102. When do you use OpenShift’s CLI?

• To manage pods, services, and routes.
• For automating CI/CD pipelines.
• Supports debugging with oc logs.
• Ensures auditable workflows.

103. How does OpenShift handle upgrades?

OpenShift manages upgrades via CLI or web console, ensuring minimal downtime with rolling updates. It backs up etcd and critical components for reliability.

Integration with GitOps and Prometheus ensures observability and compliance, critical for regulated industries.

• Uses rolling updates.
• Backs up etcd.
• Ensures compliance.

104. What is the role of the Scheduler?

• Assigns pods to nodes.
• Optimizes resource utilization.
• Integrates with Kubernetes for scalability.
• Supports efficient deployments.

105. Why is OpenShift’s Service Mesh used?

Service Mesh, based on Istio, manages microservices communication, providing traffic control and observability. It integrates with CI/CD for automated routing and compliance.

Critical for regulated industries, it ensures secure, auditable workflows with Prometheus monitoring.

106. When do you use OpenShift’s monitoring?

• For real-time cluster performance insights.
• Using Prometheus and Grafana dashboards.
• Triggers alerts for incident response.
• Supports CI/CD observability.

107. Where are build artifacts stored?

• In OpenShift’s internal registry.
• Accessible via ImageStreams.
• Integrated with CI/CD for automation.
• Supports secure storage.

108. Who configures autoscaling?

DevOps engineers configure autoscaling with HPA, using metrics like CPU or memory. Integration with Prometheus ensures observability, while GitOps automates policies. This supports compliant, scalable CI/CD pipelines for high-traffic applications in regulated industries like finance.

109. Which tool supports A/B testing?

• Routes for traffic splitting.
• Integrates with CI/CD for automation.
• Tests multiple app versions.
• Ensures low-risk deployments.

110. How does OpenShift handle secrets?

OpenShift stores secrets in etcd with encryption, managed via oc commands. They integrate with CI/CD for secure configurations and support compliance with audit logging.

Critical for DevSecOps, they protect sensitive data in regulated industries like healthcare.

• Stores in etcd.
• Supports DevSecOps.
• Ensures compliance.

111. What is the role of the Controller Manager?

• Manages replication and deployment controllers.
• Ensures desired cluster state.
• Integrates with API server.
• Supports scalable deployments.

112. Why is OpenShift’s logging stack used?

The EFK stack centralizes logs for debugging and compliance, integrating with CI/CD pipelines for real-time analysis. It supports observability with Prometheus and Grafana.

Critical for regulated industries, it ensures auditable workflows with traceability.

113. When is OpenShift Serverless preferred?

OpenShift Serverless, using Knative, is preferred for event-driven, auto-scaling applications requiring minimal management. It supports CI/CD with cost-efficient deployments.

Ideal for regulated industries needing scalable, compliant workflows in 2025.

114. Where are RBAC policies configured?

• In OpenShift’s IAM via oc commands.
• Define roles and permissions.
• Integrate with SCC for security.
• Support compliance with auditing.

115. Who deploys serverless applications?

• DevOps engineers using OpenShift Serverless.
• Automate with Tekton pipelines.
• Monitor with Prometheus for observability.
• Ensure compliant deployments.

116. Which service enables event-driven systems?

OpenShift Serverless, with Knative, supports event-driven systems, triggering containers on demand. It integrates with CI/CD for automation and compliance.

Audit logging ensures traceability, critical for regulated industries like healthcare.

117. How does OpenShift support monitoring?

OpenShift uses Prometheus for metrics, EFK for logging, and Grafana for visualization, ensuring real-time observability in CI/CD pipelines. It supports alerting for incident response.

Integration with GitOps ensures compliance, critical for regulated industries like finance.

• Uses Prometheus and EFK.
• Supports observability.
• Ensures compliance.

118. What is the role of feature flags?

• Enables controlled feature rollouts.
• Supports testing in production.
• Reduces risks with rollbacks.
• Integrates with CI/CD pipelines.

119. Why is OpenShift’s audit logging critical?

OpenShift’s audit logging tracks resource actions, ensuring compliance with GDPR and industry standards. It integrates with EFK for analysis and CI/CD for automation, supporting DevSecOps. This is critical for DevOps teams in regulated industries like healthcare requiring traceable, auditable workflows in 2025.

120. When do you use OpenShift’s Service Mesh?

• For microservices traffic management.
• Based on Istio for observability.
• Integrates with CI/CD for automation.
• Ensures secure, compliant workflows.

121. How does OpenShift enhance DevSecOps?

OpenShift embeds security in CI/CD with SCC, RBAC, and image scanning, ensuring secure deployments. It supports audit logging and GitOps for compliance and automation.

Integration with Prometheus and EFK ensures observability, making it critical for regulated industries like finance or healthcare requiring secure, auditable workflows in 2025.

• Embeds security in pipelines.
• Supports compliance.
• Ensures observability.