Top 15 Kubernetes Interview Questions For Exceling the Interviews in 2021

Kubernetes has gained its origin from a Greek word which means ‘Helmsman’, ‘Governor’ or ‘Captain’. The term Kubernetes is also associated with DevOps. Kubernetes was officially launched in 2014 by Joe Beda, Craig McKuckie & Brendan Burns, which was presently maintained by the Cloud Native Computing Foundation and expanded into fast-evolving and broadly utilized ecosystem services.

Like every IT job you need to clear the Kubernetes interview questions and answers sessions where you have to answer all the Kubernetes interview questions, that relate to different realms of Kubernetes. You have to face open shift interview questions, cluster interview questions, interview questions on Docker and Kubernetes, Kubernetes interview questions for experienced professionals with skills, proficiency in Kubernetes.

In this blog, we’ll cover every aspect of Kubernetes interview questions with the focus on the most frequently asked. These Kubernetes interview questions and answers will help you to excel in any interview and certification exam in which you sit after completing the Kubernetes live online training.

So, without stretching it further, let"s jump to the top Kubernetes interview questions for experienced professionals.

Kubernetes interview questions and answers:

1. What do you understand about Kubernetes?

The most basic Kubernetes interview questions every professional has to go with is this. Kubernetes is an efficient tool for automating tasks such as management, monitoring, deployment, and scaling of containerized applications with an open-source container orchestration instrument or structure which is utilized accordingly. It is employed to manage various containers in one go, which facilitates logical units that can be managed and discovered.

2. Why Kubernetes?

It is essential in Kubernetes interview questions. The Kubernetes is chosen because it is an open-source arrangement for scaling, managing, and deploying the containerized program. It handles scheduling the containers to compute clusters and managing workload for ensuring smooth running of containers as per users intentions.

3. What is namespace in Kubernetes?

A namespace is used to divide the cluster resources into multiple users. This is meant for organizations" cloud environments where so many users are available, spread across a wide area of projects, teams, and facilitates for a scope of resources. Namespace also plays an important part in Kubernetes interview questions.

4. What is pod in Kubernetes?

Pod is a top-level structure for wrapping more than one container. Because the containers are not directly run on Kubernetes. They share local networks in the same pod and same resources, which allows them to communicate with ease to other containers that exist in the same pod, like they were on the identical machine while maintaining a degree of isolation at the same time. Pod is featured as an important topic in Kubernetes interview questions.

5. How to install Kubernetes on ubuntu?

In the Kubernetes interview question for experienced, it is an important topic. The steps to install Kubernetes on Ubuntu are:

• Step 1: Install Docker into system,
• Step 2: After that start and enable the Docker,
• Step 3: Install Kubernetes afterward,
• Step 4: Add the Kubernetes signing key,
• Step 5: Add software repositories in the system,
• Step 6: Add Kubernetes installation tools i.e. Kubeadm (Kubernetes Admin) which is a tool for initializing clusters,
• Step 6: Begin Kubernetes deployment in the systems,
• Step 7: Assign unique hostname for servers node,
• Step 8: Initialize Kubernetes on the main node
• Step 9: Deploy the pod network into clusters,
• Step 10: Join worker node to Clusters. And this is how we install kubernetes on ubuntu.

6. Azure kubernetes service belongs to which category?

The Azure kubernetes services are associated with the “Containers as a Service” category. The most unique features offered in Azure kubernetes services are:

• Deploying and managing Kubernetes with expertise.
• Scaling and running applications with ease.
• Securing the organization"s Kubernetes environment.

7. How kubernetes works?

Kubernetes is a platform that keeps the track of container applications used in the clouds. It reinstated forsaken containers, closedown unused containers, and provisions resources like storage, memory, and CPU automatically when necessary. It is an important topic in kubernetes interview questions for experienced.

Interview questions on docker and Kubernetes:

8. How are Kubernetes and Docker related?

Docker is an open-source tenet applied for handling software development. The benefit of docker is that it packaged the framework and dependencies needed to run application/software on containers. Kubernetes gives access to manual linking and composition of various containers, functioning of multiple hosts conceived by utilizing Docker.

9. What is Docker Swarm?

In kubernetes interview questions for experienced you are expected to answer this question as you have worked with the Docker swarm. The docker swarm is an indigenous clustering for Dockers. It transforms various docker hosts into a single one, virtual Docker host.

Cluster interview questions:

In the Kubernetes interview questions, the cluster is an important topic to cover. So let’s see some cluster interview questions in the Kubernetes interview questions and answers.

10. What is Clustering? Explain and define.

Clustering is an emerging technology, which is utilized for providing high availability for critical applications. From add remove programs we can configure clusters by lodging it from MCS (Microsoft cluster service) component.

11. What do you understand about a cluster of containers in Kubernetes?

Cluster is an essential topic to cover in the kubernetes interview questions. A cluster of containers is a set of machine components that are nodes. It commenced for establishing a communication in the nodes with other nodes in a specified route in a running manner.

12. Elaborate the types of clusters?

There are two types of clusters available:

NLB: Network load balancing cluster is for balancing loads between several servers. This is not for a high availability. Usually recommended at edge servers like proxy or web.

Server Cluster: This provides a High availability by composing the active-passive or active-active clusters. In 2 nodes of active-passive clusters one node is active and another one is stand by. When an active break-down the applications will Failover to stand automatically. On the main server backs is Failback the application.

Openshift interview questions:

In the kubernetes interview questions some questions can be asked from openshift. So, openshift interview questions are important in the kubernetes interview questions for experienced to cover. Let’s have a glimpse in the openshift interview questions asked in kubernetes interview questions and answers sessions.

13) What is an Openshift?

Openshift is basically a PC software utilized by Red hats. It’s open-source advancement level & cloud improvement administration are for designers. Openshift helps in development and initiation of applications on the cloud.

14) Differentiate between Openshift and Docker?

The main differentiation between openshift and docker are:

• Dockers center distinctively around the runtime container as a function. Concurrently, OpenShift contains the runtime container and REST API, management, coordination & web interface, and deployment of the individual containers.
• OpenShift is a container arrangement deliberation sheet. It employs Kubernetes inside for the structuring of containers. Docker has a docker swarm for the same functioning.

15) What are the main advantages of Openshift in Kubernetes?

The benefits of Openshift in kubernetes are:

• It provides container the executive level for your complex IT structures.
• It empowers your improvement set to zero in testing and planning applications in place of expending excessive time in maintaining and initiating them.
• It also incorporates containerization for continuous integration, multitenancy, automatic-provisioning, self-service, and automatic application scaling.

Here are some more kubernetes interview questions and answers from all parts of Kubernetes that can be helpful for you to bolster your kubernetes interview questions preparation. These kubernetes interview questions for experienced people can help them to gain an edge in Kubernetes interview questions and answers sessions against other professionals.

So, start your Kubernetes live online training and certification journey from today and learn more about kubernetes in the most unique live online training.