Kubernetes Interview Questions

Common Kubernetes Interview Question:

1. What is Kubernetes and how does it work?
2. What are the main components of a Kubernetes cluster?
3. How does Kubernetes handle network communication between pods?
4. What is the role of a Kubernetes API server and how does it work?
5. What is a Kubernetes pod and how is it different from a deployment?
6. What are Kubernetes services and how do they work?
7. How does Kubernetes handle scaling and resource management for containers?
8. How does Kubernetes handle rolling updates and rollbacks for applications?
9. What is the role of Kubernetes secrets and configMaps in managing sensitive data?
10. What is the difference between a stateful and stateless application in Kubernetes?
11. How does Kubernetes handle storage for persistent data?
12. What is the difference between a deployment and a replica set in Kubernetes?
13. What is the role of a Kubernetes ingress controller and how does it work?
14. How does Kubernetes handle security and authorization for access to the cluster and its resources?
15. What is the difference between Kubernetes and Docker Swarm?
16. How does Kubernetes manage network communication between containers?
17. What is a pod in Kubernetes, and how does it differ from a deployment?
18. How does Kubernetes handle scaling and resource management?
19. What is rolling update and rolling back in Kubernetes?
20. Can you explain the role of labels, selectors and annotations in Kubernetes?
21. How does Kubernetes handle storage and persistent data?
22. What is the difference between a DaemonSet and a Deployment in Kubernetes?
23. How does Kubernetes handle rolling upgrades of its own components?
24. Can you explain the role of ConfigMaps and Secrets in Kubernetes?
25. What are the steps to troubleshoot a failed deployment in Kubernetes?
26. Can you explain the difference between a StatefulSet and a Deployment in Kubernetes?
27. What are the main security concerns in a Kubernetes cluster and how can they be addressed?
28. Can you explain how Kubernetes integrates with other tools and platforms such as CI/CD pipelines and service meshes?
29. What is the role of etcd in a Kubernetes cluster?
30. Can you explain the difference between a ClusterIP and a NodePort in Kubernetes?
31. How does Kubernetes handle rolling updates for stateful applications?
32. What is a kubeadm and when is it used in a Kubernetes cluster?
33. Can you explain the difference between a LoadBalancer and a Service in Kubernetes?
34. How does Kubernetes handle resource quotas and limits?
35. Can you explain the difference between a namespace and a tenant in Kubernetes?
36. What are the benefits of using Kubernetes over other container orchestration tools?
37. How does Kubernetes handle disaster recovery scenarios?
38. Can you explain how you would monitor the performance of a Kubernetes cluster?
39. What are the main challenges you have faced while working with Kubernetes?
40. Can you explain how you would handle network segmentation in a multi-tenant Kubernetes cluster?
41. How does Kubernetes handle the networking configuration between nodes in a cluster?
42. Can you explain the role of kubectl in a Kubernetes cluster?
43. How does Kubernetes handle resource constraints and optimisations for different applications and workloads?
44. What is the role of a service account in Kubernetes?
45. Can you explain the difference between a deployment and a replicaset in Kubernetes?
46. How does Kubernetes handle rolling updates for stateless applications?
47. What is the role of liveness and readiness probes in Kubernetes?
48. Can you explain how you would handle network segmentation in a multi-cluster Kubernetes environment?
49. How does Kubernetes handle security for container images and the cluster itself?
50. Can you explain how you would integrate Kubernetes with a CI/CD pipeline?
51. What are the different types of services supported by Kubernetes and what are their use cases?
52. How does Kubernetes handle network security and communication between containers in different namespaces?
53. Can you explain the role of a pod disruption budget in Kubernetes?
54. How does Kubernetes handle the storage and retrieval of logs and events?
55. Can you explain the difference between a Kubernetes namespace and a virtual cluster?
56. How does Kubernetes handle rolling updates for critical applications?
57. Can you explain how you would handle network policy and security in a Kubernetes cluster?

Advanced Kubernetes Interview Questions

1. Can you explain the concept of network policy in Kubernetes and how it is enforced?
2. What is a custom resource definition (CRD) in Kubernetes, and how is it used?
3. How does Kubernetes handle rollouts and rollbacks for complex multi-tier applications?
4. Can you explain how you would configure a multi-cluster Kubernetes environment for high availability and disaster recovery?
5. How does Kubernetes handle scaling for stateful applications, and what are the challenges in doing so?
6. Can you explain the role of admission controllers in Kubernetes and how they are used to enforce cluster policies?
7. How does Kubernetes handle resource quotas and limits at a namespace or cluster level?
8. Can you explain how you would handle blue/green deployments in Kubernetes?
9. How does Kubernetes handle configuring and managing secrets and confidential data?
10. Can you explain how you would handle network segmentation and communication between namespaces in a multi-tenant Kubernetes environment?
11. How does Kubernetes handle upgrading its own control plane components and etcd clusters?
12. Can you explain how you would handle managing and scaling a large number of microservices in a Kubernetes cluster?
13. How does Kubernetes handle autoscaling, both for resource usage and custom metrics?
14. Can you explain how you would handle integrating Kubernetes with a service mesh, such as Istio or Linkerd?
15. Can you explain how you would handle rolling updates for statefulsets in Kubernetes?
16. How does Kubernetes handle network security and communication between pods in a cluster?
17. Can you explain how you would handle integrating Kubernetes with a cloud-native storage solution, such as Ceph or GlusterFS?
18. How does Kubernetes handle configuring and managing environment variables for containers?
19. Can you explain how you would handle setting up an ingress controller in Kubernetes?
20. How does Kubernetes handle monitoring and logging for applications and the cluster itself?
21. Can you explain how you would handle integrating Kubernetes with a container registry, such as Docker Hub or Google Container Registry?
22. How does Kubernetes handle deploying and managing applications with complex dependencies?
23. Can you explain how you would handle rolling updates for daemon sets in Kubernetes?
24. How does Kubernetes handle configuring and managing resource limits and quotas at a pod level?
25. Can you explain how you would handle integrating Kubernetes with a database, such as MySQL or PostgreSQL?
26. Can you explain how you would handle scheduling and orchestration for batch jobs in Kubernetes?
27. How does Kubernetes handle configuring and managing persistent storage for stateful applications?
28. Can you explain how you would handle automating canary releases in Kubernetes?
29. How does Kubernetes handle network communication and security between services in different namespaces or clusters?
30. Can you explain how you would handle integrating Kubernetes with a service discovery tool, such as Consul or ZooKeeper?
31. How does Kubernetes handle updating and rolling back custom resource definitions (CRDs)?
32. Can you explain how you would handle setting up and configuring a custom Kubernetes scheduler?
33. How does Kubernetes handle network communication and security between nodes in a cluster?
34. Can you explain how you would handle integrating Kubernetes with a configuration management tool, such as Ansible or Puppet?
35. How does Kubernetes handle network communication and security for stateful applications that require a static IP address?