Kubernetes Interview Questions
Posted by Superadmin on May 06 2023 10:14:28

1. What are the benefits of Kubernetes?

Ans:  It is very easy to handle containers with the container orchestration tool of Kubernetes. Customer demands are responded by deploying the applications faster and in a more predictable manner.

Few of Kubernetes benefits are:

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2. What is Container Orchestration?

Ans: Application orchestration in the software process which integrates two or more applications. With Container Orchestration, you are able to automate the arrangement, build the coordination, and manage the computer software. The goal of any orchestration process is to streamline and optimize frequently repeatable processes.

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3. Why use Kubernetes?

Ans: Kubernetes is used because:

4. What are the features of Kubernetes?

Ans: The Kubernetes features include.

5. How is Kubernetes related to Docker?

Ans: A Docker provides the lifecycle management of containers. The Docker image builds the runtime containers. As the individual containers have to communicate, Kubernetes is used.  So, Docker builds the containers and these containers communicate with each other via Kubernetes. So, containers running on multiple hosts can be manually linked and orchestrated using Kubernetes.

6. What is the difference between Kubernetes and Docker Swarm?

Ans: 

Kubernetes:

Docker Swarm:

[Related Article: Docker Swarm Vs Kubernetes]

 

7. Mention the types of controller managers.

Ans: The types of controller managers are:

  1. endpoints controller.
  2. service accounts controller. 
  3. node controller.
  4. namespace controller. 
  5. replication controller. 
  6. token controller.

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8. List various services available in Kubernetes?

Ans: Various services available in Kubernetes are:

  1. Cluster IP service.
  2. Load Balancer service.
  3. Node Port service.
  4. External Name Creation service.

9. What are the tools that are used for container monitoring?

Ans: The tools which are used for container monitoring are.

 

10. Explain the types of Kubernetes pods

Ans: There are two types of Kubernetes pods.

  1. Single Container Pod: It can be created with the run command.
  2. Multi Container pods: It can be created using the "create" command in Kubernetes.

11. What are the types of Kubernetes Volume?

Ans: The types of Kubernetes volume are:

12. What do you understand by a node in Kubernetes?

Ans: 

 

13. What is Heapster?

Ans: 

14. What is Minikube?

Ans: 

 

15. What is Kubectl?

Ans: 

16. What is Kubelet?

Ans: 

[Related Training : Prometheus Training]

17. What do you understand about load balancers in Kubernetes?

Ans: A load balancer is a common standard procedure which presents the service. Depending on the working environment, a load balancer is of two types. The internal load balancer and external load balancer.

Internal Load Balancer:
It automatically balances load and allocates the pods with the required configuration.

External Load Balancer:
It directs the traffic from the external load to the backend pods.

 

18. Mention the uses of GKE.

Ans: GKE stands for Google Kubernetes Engine and its uses are:

19. What are the objectives of the replication controller?

Ans: The objectives of the replication controller are.

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20. What is the role of kube-apiserver and kube-scheduler?

Ans: 

Kube-apiserver:

Kube-scheduler:

 

21. What is Kube-proxy?

Ans: 

22. What are the ways to provide API-Security on Kubernetes?

Ans: The ways to provide API-Security on Kubernetes is as follows:

23. What is ETCD?

Ans: 

24. Why use namespace in Kubernetes?

Ans: 

25. Define Stateful sets in Kubernetes.

Ans: 

 

26. What are the different components of Kubernetes Architecture?

Ans: The Kubernetes Architecture mainly comprises two components. The master node and the worker node. The master and the worker nodes have many inbuilt components within them. 

  1. Master node: It has kube-controller-manager, kube-apiserver, kube-scheduler, etc. 
  2. Worker node: It has kubelet and kube-proxy running on each node.

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27. What do you understand by Cloud controller manager?

Ans: 

28. What are the types of cloud controller manager?

Ans: The various types of cloud controller manager is as follows.

29. Why use Daemon sets?

Ans: Daemon sets are used because:

 

30. Explain Replica set.

Ans: A Replica set is used to keep replica pods stable. It enables specifying the available number of identical pods. Replica set is considered as a replacement for the replication.controller.