Kubernetes Interview Questions Answers (From Container Specialist) | Moderate to Advanced

[@cloudwithraj]

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[@expl0r3rTrust]

Raj, you’re the best ... watching almost all your videos helped me greatly in landing my dream job in my career switch to cloud ... thanks so much

[@cloudwithraj]

Thanks for the kind words! Comments like this motivates me to keep making more videos :). Keep rocking!

[@venkateshakula700]

Help me, got stuck with my current role not sure what I am doing here

[@tluangpuiivanchhawng1738]

​@@cloudwithraj Kumar Samanta apni hi marji hai

[@AnilKumar-fg5pj]

Boss. I am your fan.. It's not like that I have watched only 1-2 videos but I keep watching your videos for hours and found very useful.

[@cloudwithraj]

Thanks a ton Anil, glad you find my videos helpful

[@roshansharma3438]

Hi Raj Hope you are doing Good 🙂. Thanks for amazing and informative videos. Would you mind explaining me the anwers of the below questions as myself having some confusions. What is the difference between orchestration and Management. What is the work of pause container. Why k8s introducted concept of pods. What is the work of kube-proxy. When a pod gets create what is the default resources it takes i mean memory,cpu. Is it something predefined somewhere. Thanks in advance Raj.

[@Rahulreddy.b]

One of the best videos out there , straight to points which are most important and very clear explanation with practical examples. Thank you and looking forward for many more videos.

[@cloudwithraj]

Thanks Rahul for the kind words, glad it was helpful!

[@Maks-nf5bo]

I have a technical interview tomorrow. Thank you for clarifying K8s for everybody!

[@riverasanchez]

Great videos and point of departure to deep-dive. Breakdown Raj’s explanation in order to understand the mechanism behind it. This process is part of building experience behind the topic.

[@cloudwithraj]

Ty Robert for the kind words, glad it was helpful

[@KnThSelf2ThSelfBTrue]

I think a better phrasing of the first question would be "How do you automate the deployment of an application to Kubernetes?" not "How do you automate Kubernetes Deployment?" which sounds like "How would you automate the deployment of the software called Kubernetes?" which sounds like a CKA question about initializing a cluster. I also think the answer to that question is a bit tool-focused, which I think is fine for keeping things brief, but it doesn't address the fundamental technical requirements.

[@humerazabin586]

This is super impressive why my search engine not landed me to this video before , the way you explain is aswm , thanks raj :)

[@cloudwithraj]

Thanks Humera for the kind words. Share the channel with friends who you think can benefit as well, much love 🙏

[@gkv2306]

hi good morning Brother feel free could you make a video for the following questions if time permits The customer is approaching u to deploy a highly secured infrastructure. What was the best practice to suggest So many aspects are they how you will implement in the cloud (AWS) from the scratch. So in that scenario what are the security best practices that u follow? How will we configure AWS infrastructure? How will u take from scratch to Kubernetes? How will you plan to implement the infrastructure? Best practices we follow for infrastructure? AWS Alb + ingress controller have u tried? How u can implement Autoscaling at pod level? On what component HPA relies on in order to bring up the Autos calling we have to bring up Some file or what the dependent controller for HPA What are k8s managed services u have used? Have u implemented any self-managed clusters? What are the security best practices that u follow in k8s? Where do u store secrets? Have u created any helm chats from scratch? What are the policies u used for k8s? What is the backend used for storing secrets? What are the monitoring and logging solutions u used for this? Have u used any lambda functions? Have u used the API gateway?API gateway what are the features or just like a router? Have u ever hosted a static website on AWS using S3 + cloud front or cloud formation? IAAC(Terraform) What are the best practices in terraform to bring up ur infra or developing the terraform Template? How u will secure Main.tf and state file mgmt? CI/CD tools u r familiar with? How do you reduce the docker image? Have u ever used docker-compose and docker swarm? Difference between k8s and docker swarm

[@cloudwithraj]

I will try to cover some of these in future videos, thanks for the suggestion!

[@MayankPatel2410]

Great Set of real-world questions Raj. This is helpful for fresher as well as an experienced person. I have been watching your videos lately, they're really helpful. Would love series on this kind of interview questions and answers videos.

[@cloudwithraj]

Glad it was helpful!

[@prateek1inall]

Great help Raj. Could you also make a video with some troubleshooting tricks and tips? that would be awesome.

[@cloudwithraj]

Noted!

[@sudheerkatha4357]

Thank you for your amazing video. Could you please about how do you secure your kubernetes cluster?

[@RavindraSaini-jq7ey]

Raj is superhero.

[@soumyadipchatterjee2267]

Super informative content about K8's interview . Huge thanks for this .

[@cloudwithraj]

Glad it was helpful!

[@titimills4955]

Thanks so much Raj. This is very Educative. Question: How do you set disaster recovery for your K8s cluster?

[@ankireddy4746]

Hi raj, thanks for uploading these content, can you please upload a video on deployment strategies (blue green , canary deployment) with helm charts and make simple project on this please

[@avinashnew]

Hi Raj, please answer this interview question. How many worker nodes do you handle in your project? If I'm using a large size organization like Zomato then what is the answer? What I have to say? Like 10-100 or 100-1000

[@satishkuncham8594]

Raj, It's awesome that I got your video while searching. Could you please explain one complete cluster which will have real time number of services and number of required pods and explanations to them, why do we need that many worker nodes ?

[@dummymail6029]

great video thanks raj

[@MrKumargopalan]

Raj, this is the best video i have seen on K8S. Thanks much

[@cloudwithraj]

Glad you found it useful Ramkumar!

[@manabdas6923]

Hey Raj da, I am from 2004 KGEC ECE batch, so basically your college junior :). I took many of your Udemy courses. This video is as usual super cool. Your USP is explanation with simplicity. Keep rocking :).

[@cloudwithraj]

Thanks Manab!! KGEC rocks!

[@phidophuong6209]

at 1st question, actually using ArgoCD is the best tool for gitops instead of jenkins

[@saketanand6577]

Hey Raj, Thank you for this video, it is very much insightful. I have one question, How can one-click version upgrade sound challenging to the interviewer, is there anything I'm missing, please let me know.

[@cloudwithraj]

Project might not use console in production. So the one click in console becomes API calls. With API calls, team needs to implement permissions, and policies, and from which devops flow it should be called - those are some challenges

[@bollepallyjagapathiraju7066]

Hello raj, great content ,do you teach one to one classes?

[@Cloud-Dev-Ops-Security-AI-Talk]

Hi I love your course. Do you have deep drive course on ECS? . expecting more on interview related questions

[@palanivel9765]

Raj your courses are very excellent. Keep Rocking

[@cloudwithraj]

Thanks a ton Palani by enrolling in my courses. Keep learning and keep rocking!

[@tatacyprian5893]

Thank you for your videos. Very educational. Actually taking your course on udemy. Can you please do a video on helm charts. Have been looking for a better video that covers the essential skill set a kubernetes administrator needs to create and/or manages helm applications and I am still to find one. Thanks in advance.

[@dharinitayna7663]

Thanks Raj! So helpful you are contents are

[@cloudwithraj]

Glad you like them!

[@LarryPearsonATL]

Thanks Raj, very useful to get insights.

[@DavidHawlin]

Great Content Raj, but how did you manage to get one add every minute?

[@cloudwithraj]

Haha thanks David. I have no idea how frequent KZbin adds ads. I just upload normally, YT decides how many ads to show (and it varies person to person). Apologies on behalf of them if that was annoying, I know the feeling. Thanks for watching.

[@DavidHawlin]

It's not your fault obviously Raj, I can remember when youtube didn't have ll these adds. Thank You for your efforts.

[@DavidHawlin]

@@cloudwithraj understand completely. Good Job on the Class, and I should know I trained 1000 Solaris Admins and network security folks, 600 SIEM Security Analysts, and Engineers. Not bragging just a fact. Keep up the good work, I plan to post something soon.

[@nvasudeva]

As always awesome content!

[@cloudwithraj]

Thanks again!

[@vktop2]

Hi!, excelent explanation, I have a question, Is there any reason (other than availability) to have more than 1 kubernete cluster deployed in production? Thanks.

[@cloudwithraj]

Hey Victor, yes. Most of the times enterprises will create separate cluster for different apps if they are not mature enough to apply all the namespace and network policy boundaries. It's also an easier way to measure cost per app. Sometimes if one cluster needs to scale a lot and hitting EC2 limits on one account, separate cluster will be created for others in other account. Hope this helps.

[@vktop2]

@@cloudwithraj Excellent Raj, Thank you so much.

[@songshindi6376]

Excellent video Raj

[@jithin_zac]

Sir, the last question do we need k8s for your containerized app? Do we need an orchestrator like k8s/Docker smarm if we have only 1 or 2 containers can we directly run it on Docker in production? Maybe on an EC2?

[@cloudwithraj]

Yeah, if it's just 1 or 2 containers you can run on EC2. But in real world, hardly any enterprise project runs on 1 container ;). Also you need a way to bring up new container if existing one fails, scale etc.

[@RockyViewfinder]

Very helpful video thanks Raj, could you please create a deep dive session for cost/performance optimization using mentioned tools 10:00

[@gv.ramana]

Sir ji, Very useful video on kubernetes. please keep doing such good stuff on many more topics

[@cloudwithraj]

Sure I will Venkata

[@musheershaik9611]

Very nice explanation raj

[@cloudwithraj]

Thanks and welcome Musheer

[@Afro_Updates]

You are doing a great Job ... Am a fan for life

[@cloudwithraj]

Thanks so much Adebowale!

[@devopsexpert9906]

Excellent Explanation for experienced Interview Questions.....

[@silentAssassin1112]

Hey Raj, I've noticed something, can you tell me why you don't mention github Actions as a CI/CD tool ? Want to know if you just missed mentioning it intentionally or there's a specific reason for it to not be included?

[@cloudwithraj]

Hey Anshuman, it is not intentional. If you have used GitHub Action then you can absolutely mention them in interview. I have not tried it personally hence it doesn't come to my mind.

[@silentAssassin1112]

@@cloudwithraj Cool. Understood! Anyway, thanks for your videos Raj! Very helpful

[@nithin0988]

Raj, YOU ARE THE BEST!!!!!!!!!

[@cloudwithraj]

Ty Nithin 🙏

[@sambasiva1702]

Great Video Raj..Please do more videos on CNI,Service mesh tools..

[@cloudwithraj]

Thanks, will do!

[@hinduism2033]

That's amazing explanation .!!! keep posting

[@cloudwithraj]

I will try my best

[@lordknowschannel5632]

Good one Raj, You did a well done job

[@cloudwithraj]

Thank you!

[@lordknowschannel5632]

@@cloudwithraj I’ve interview on Tuesday mainly on docker and kubernetes and have studied the video for kubernetes which will surly help. If you have any video for docker as well as ansible please recommend it via the link

[@onelife7284]

Can we have a video how do we implement ingress in real world with dsn name through route53 and access publicly

[@sanjibsaha2229]

Thanks Raj ..another useful video

[@cloudwithraj]

Thanks fellow saha bhai

[@mamun001]

Thank you!

[@cloudwithraj]

You're welcome!

[@ShivamSharma-xz5je]

Good video, shows the basic outline of any k8s interview.

[@cloudwithraj]

Thanks Shivam

[@ankitapal6860]

Can you please explain the difference between the tool Datree and OPA

[@peteropute5541]

I want to ask, as someone who is trying to switch to devops, do I need to know a programming language...IS it a must?

[@cloudwithraj]

No, you do not need programming language. You do need to know one infrastructure as code though like terraform or cloudformation. Little bash scripting knowledge also helps but you don’t need to learn traditional prigramming

[@peteropute5541]

@@cloudwithraj Thank you very much raj... i am currently studying dockers, kubernetes , ansible and terraform....i have been a network engineer for quite a while...thank you i appreciate....I just bought your video tutorial on udemy on kubernetes, terraform n cloud

[@peteropute5541]

@@cloudwithraj I love the way you simplify complex system setup....kudos to you!!

[@sathishdarshanala6137]

raj i have a doubt actually in realtime envirement do we create pods?

[@onlysingh7587]

One of the best 👏👏👍👍🤟👌

[@cloudwithraj]

Thanks brother 🙏

[@vamsikrishna4870]

I was created a cluster in Linux ec2 instance it's up and running, But if I want to see how many nodes pods are running via dashboard,how can I able to achieve it? Please suggest an idea!🙂

[@cloudwithraj]

Install open source Kubernetes dashboard. Alternatively if this is EKS cluster then used newly released EKS dashboard which comes already preintalled with EKS. Both will show nodes, pods, deployments, namespaces and more

[@ntchumilujulius9758]

Thanks

[@andrewnhien9714]

Helpful video! Thank you!

[@cloudwithraj]

Ty Andrew

[@Tympass111]

Much Awaited .. Tysm Sir ;) You Are Amazing_/\_

[@cloudwithraj]

Thanks!

[@Afro_Updates]

You are the best

[@nagadeepkodali1151]

Keep gng Raj, do videos on CD tools in Kubernetes

[@cloudwithraj]

Thanks, will do!

[@hackerops1407]

Please sir makes more videos on kubernetics administration question and answers and also the roles and responsibilities of kubernetics admin

[@cloudwithraj]

Will do this in future videos anis. Are you interested in specific area of k8s admin - security? Infra set up? DevOps set up? Multi tenant cluster setup?

[@hackerops1407]

@@cloudwithraj yes sir

[@venkatavinaykumargajara4434]

excellent explanation

[@cloudwithraj]

Glad you liked it!

[@DevOpsPulse]

Thank you

[@ZahidAli-xl8ih]

What is the industry trend sysdig or docker with k8s?

[@cloudwithraj]

Hey Zahid - sysdig is a security tool, Docker is container runtime - both are used in k8s. They are not in competing space.

[@cloudwithraj]

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[@munisekhard9193]

very helpful video thanks a lot

[@cloudwithraj]

Glad it helped

[@KA-du7vm]

sir i dont have any work experience but in all job they ask for that. what should i do ?

[@cloudwithraj]

You have to do hands on project, save on GitHub and use that as your experience

[@sangeetashukla7796]

thank you so much :)

[@cloudwithraj]

You're welcome!

[@ibrahimmalik9127]

Thanks Raj!

[@cloudwithraj]

Thanks Ibrahim!

[@nareshbejawada5889]

very helpful video thanks a lottttttt

[@cloudwithraj]

Thanks Naresh!

[@BharatSingh-hf1yt]

Amazing video

[@cloudwithraj]

Thanks!

[@mmu99]

Thank you Raj ;)

[@cloudwithraj]

Thanks Cartman ;)

[@mmu99]

@@cloudwithraj respect my authoritah XD

[@cloudwithraj]

@@mmu99 Screw you guys, I'm going home

[@pcs5869]

how do we pass one docker file to another?

[@christianibiri]

Great

[@cloudwithraj]

Ty!

[@hanumanthubudigi6520]

can't you speak normally speaking in english in the sence need not speed in their slang

[@alvincly]

big nose

[@roccobalboa7627]

thank you!

[@softwareasafun]

Thanks!

[@cloudwithraj]

Ty for the tip!! Vey very appreciated, and glad the video was helpful.