Kubernetes Interview Questions | Kubernetes Interview Questions And Answers | Intellipaat

In this Kubernetes interview questions video, you will learn everything about Kubernetes interview questions with detailed answers recently asked in top MNCs. If you are preparing for a DevOps and Kubernetes job then this is a must-watch video for you. In this video, we have covered Kubernete's basic to advance questions so that this video will be helpful to everyone at any stage of learning Kubernetes.

🔵. The following questions are covered in this video:
00:00 - Kubernetes Interview Questions
02:28 - What is Kubernetes?
03:44 - What is the difference between Kubernetes and Docker Swarm
07:55 - What is a Heapster?
08:29 - What is Kubelet?
09:58 - What is Kubectl?
11:00 - What are the different services within Kubernetes?
13:50 - How to set a static IP for Kubernetes Load Balancer?
02:22 - What is ETCD?
15:44 - Can we use many claims out of a persistent volume?
17:27 - How do you deploy a feature with zero downtime in Kubernetes?
19:17 - What is the difference between replication controllers and replica sets?
20:08 - What is Kube Proxy?
21:00 - What is a Headless Service?
21:41 - What is PVC in Kubernetes?
23:17 - Different Components of Kubernetes Architecture
26:53 - How to Pass sensitive information in Cluster?
27:44 - What is a Sematext Docker Agent?
28:43 - If you delete a pod. What happens to the information inside of it?
29:38 - Is there any pattern to pods being assigned to nodes? Can you make sure a pod
gets scheduled to a particular node?
30:53 - How to Stop the Application if it exceeds the time in which the job should be done?

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For more information:

[nandani]

For Question#19 Taints and Tolerations doesn't really guarantee that a POD with Toleration will GET SCHEDULED on a specific Node with Taint, these pods can still get scheduled on different Nodes without any Taints. Taints just repels the pods without the tolerations from being scheduled on the specific Node. So, you would also need to use Node Affinity along with Taints and Tolerations to ensure that a pod or group of pods get scheduled on required Nodes.

Alternatively, there are options like "nodeSelector" which can directly be used into the Pod definition to schedule a pod onto a specified Node under the "nodeSelector".

[AmanRaja]

K8s provides a way to share volumes between containers and persist data outside of the containers as well (7:30 mentioned little wrong). This is achieved using the concept of Persistent Volumes (PV) and Persistent Volume Claims (PVC).

[minion]

a pod can be scheduled on the specific node using nodeSelector as-well

[dnyaneshwarshiral]

Question no. 19
If we want to use taint and toleration to deploy specific pod in specific node then we must taint all node. Otherwise the pod may be deploy on that node who has no taint.
Best practice for that situation is use of node affinity or node selector.
Is that right?

[livingbyfaith]

i am so happy for these questions... finally i got answers to some of my die hearted questions

[CheerfulOrchids-cyoi]

Good content, but very fast explanation, for the freshers or who is new to kubernetes is difficult to understand that much fast

[lhxperimental]

Rolling updates that kubernetes has is different from rolling back of change that the speaker is referring to. Rolling update just means if there are 10 replicas of a deployment not all 10 will be shut down and replaced with new version at the same time. Instead it's done in batches of a few replicas at a time so that there is no downtime.

[hemanthnaidu]

I have a doubt ?
Is kubelet enables the communication between master and slave nodes ? Or the kube proxy?

[rishabhrapatwar]

Can you make video on setup and monitoring metrics that need to be considered for prometheus and grafana

[naveenkumardammagoni]

don't we have any alternative to get back our information from unexpectedly deleted pod instead of persistent volume. because PV is used by only one pod which is missing High availability or failover service by other running cluster pods to take care?

[aakashsonkusare]

So this is for Kubernetes admin right?

[avinashnew]

Hi thank you so much, I have an Interview question
1. How many pods, master nodes, Worker nodes are there in your project?

Please answer this question approximatetely thanks in advance

[justinoleary]

You can share a storage volume with multiple containers in multiple pods in K8’s with rwx or rom access modes, not sure what you mean? and the controller manager is not a daemon set its a static pod on the master. do your own research people

[dg]

These sudden microphone switches are triggering, I jump every time - hate it.