Top 10 Kubernetes Interview Questions & Answers

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What is Kubernetes?

Kubernetes is Google’s brainchild and an open-source container management tool. It offers excellent community and holds the responsibilities of container deployment. This multi-container management solution is developed to work brilliantly with all the cloud providers and is used to deploy containers to clusters.

What does Kubernetes Administration Program stand for?

Kubernetes Administration Program provides the assurance that the certified professionals have the skills, knowledge, and competency to perform the responsibilities of Kubernetes administrators. It will teach you how to run containers effectively, how to create Kubernetes pods, deployments, and services, how to install Docker and a Kubernetes cluster from scratch, how to deploy a multi-component software application efficiently.

Who can learn Kubernetes Administration? 

  • Software Professionals
  • Testing Professionals
  • Software Architects and Designers
  • Open source contributors and enthusiasts

Does Kubernetes have any relation with Docker? 

We use Docker to build containers and these containers communicate with each other via Kubernetes. A Docker image builds the runtime containers and a Docker provides the lifecycle management of containers, but when it comes to the communication of individual containers, we use Kubernetes.

What is Container Orchestration?

Orchestration means the consolidation of all musical instruments playing together in harmony. Similarly, container orchestration means all the services in individual containers are working together to fulfil the needs of a single server.

What are the features of Kubernetes? 

  • It automates various manual processes
  • It interacts with several groups of containers
  • It offers security, networking and storage services
  • It has a self-monitoring feature
  • It checks constantly the health of nodes and containers
  • It allows you to scale resources horizontally and vertically
  • It mounts and adds a storage system of your choice to run apps
  • It can run everywhere

What are the business benefits of Kubernetes? 

  • It automates deployments and updates
  • It optimizes infrastructural resources and saves money
  • It solves common problems by deriving by the proliferation of containers
  • It scales resources and applications in real-time
  • It makes auto-correction of applications

What are Kubectl and Kubelet?

Kubectl allows the users to pass commands to the cluster. It provides the CLI to run commands against the Kubernetes cluster. Kubelet is an agent service that works on the description of containers and runs on each node and enables the slave to communicate with the master.

What are the Control Plane Components of Kubernetes?

  • Kube-API server
  • Etcd
  • Kube-scheduler
  • Kube-controller-manager
  • Loud-controller-manager

What is the load balancer in Kubernetes?

A load balancer is one of the most common ways of exposing service. It is divided into two types on the basis of the working environment. These types are Internal Load Balancer and External Load Balancer. The Internal Load Balancer allocates the pods with the required configuration by automatically balancing the load. On the opposite side, the External Load Balancer directs the traffic from the external load to the backend pods.

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