Day 5/40 - What is Kubernetes - Kubernetes Architecture Explained

[@mertcancam]

I just wanted to clarify a one more small but important technical detail. The Kubelet does not rely on a direct push or request from the API Server. Instead, it establishes a watch stream to the API Server and continuously monitors for updates to resources it's responsible for. When a pod is scheduled to a node, the Kubelet on that node detects the change via its watch stream, retrieves the pod's spec, and proceeds to pull the necessary container images and run the pod. So, the API Server doesn't directly notify the Kubelet; it's the Kubelet that actively watches for updates. Great video overall-just thought this distinction was worth mentioning!

[@okoroaforwisdom]

this is my first time ever to learn kubernetes and I didn't struggle to grasp the concepts

[@TechTutorialswithPiyush]

I am glad I was able to help :) that's the main purpose of why I create videos. Thank you

[@gokulprasathnandhakumar8313]

I completed day 5 of my course, you are a great teacher, sir, and I understand the Kubernetes Architecture.

[@TechTutorialswithPiyush]

Thank you so much!

[@faithodunayo7961]

I found the video very valuable. Since dat 0 till day 5 we are moving on till day 40. Thank you Piyush

[@pranay_vlogs_20]

Thank you Piyush for this amazing series. And I joined in this course few days back. But your teaching is amazing and this course worth to many students and employess like me , to upgrade.

[@TechTutorialswithPiyush]

You're welcome buddy :)

[@raisulkarim4726]

One of the best series available online..

[@TechTutorialswithPiyush]

Glad to know that 🙂

[@okoroaforwisdom]

your explanations are well detailed and beginner's friendly as well

[@TechTutorialswithPiyush]

Glad you like them!

[@floehden]

Very good and interesting inside on how kubernetes does things!

[@TechTutorialswithPiyush]

Thank you!

[@jefferyasamani4685]

thank you soo much Piyush.. I'm a Junior Devops engineer and your videos have really been help.

[@TechTutorialswithPiyush]

Super happy to know that!

[@sipsdolo]

Thank you, this was easy to digest. Looking forward to the upcoming videos.

[@TechTutorialswithPiyush]

Glad you enjoyed it!

[@venkatg-o4h]

Thank you Piyush for clear explaination on easy terms!!

[@TechTutorialswithPiyush]

You're welcome

[@nope-ms4rx]

The People's Champ you are Piyush. Thank you for putting us on game!

[@TechTutorialswithPiyush]

Thank you for the uncoditional support

[@somenghosh4163]

As always very informative!!

[@TechTutorialswithPiyush]

Glad it was helpful!

[@kirangundamala8434]

Thank you, very well explained the K8s Architecture in a simple manner.

[@TechTutorialswithPiyush]

You are welcome!

[@Ethiofunnyshortvideos]

Was very helpful, I recommend to others for having a deepth understanding of K8S

[@TechTutorialswithPiyush]

Thank you so much, I truly appreciate it

[@KELVINALLEN-e9f]

...and its "FREE" Thank you very much Piyush.

[@TechTutorialswithPiyush]

You're welcome

[@syamkumar7751]

Wonderfully explained Piyush. Thank you so much for the videos

[@TechTutorialswithPiyush]

you're welcome

[@chirayusanghvi8885]

Thank you for this detailed explanation on the kubernetes architecture, looking forward for more videos. I loved the painting of krishna's flute on you back. Jai shree krishna 🙏.

[@TechTutorialswithPiyush]

Happy to help! 🙏 Krishna's blessings! 😊 My wife actually painted it, in my recent videos, you will also see Mahadev ❤️

[@akshaybhat6797]

Nicely explained!looking forward for rest of videos

[@TechTutorialswithPiyush]

Thanks a ton, I have scheduled till video #20. Feel free to check out the next videos

[@riteshnayak3021]

this was ammezing !! Loved this!

[@TechTutorialswithPiyush]

Thank you

[@nabinkumarshaw4474]

good explaination easy to understand each term , crystall clear, thank you piyush bhaiya.

[@TechTutorialswithPiyush]

Thanks and welcome

[@Imran_kpk]

Wow so amazing explaination my concept is now clear master and worker node processes

[@TechTutorialswithPiyush]

Awesome!

[@sureshmadabatthula5848]

Your explanation was incredibly simple and clear. ❤

[@TechTutorialswithPiyush]

Glad it was helpful!

[@BhaveshKansagaraOfficial]

"I'm really enjoying your video! It's such a great learning experience."

[@TechTutorialswithPiyush]

Thank you so much

[@ebenezerbarning5093]

Great explanation as usual. Thanks

[@TechTutorialswithPiyush]

Welcome buddy

[@divyanshurai6325]

The explanations are really clear and very much helpful Thank you so much for your Good work. Keep it up.

[@TechTutorialswithPiyush]

You are most welcome

[@rshahdelhi]

Very good explanation

[@OleksandraPalmer]

Great training ‼️‼️👌✅

[@TechTutorialswithPiyush]

Thank you 👍

[@rajeshtalla55]

Very Well explained. Concepts simplified

[@TechTutorialswithPiyush]

Glad you liked it

[@saisureshyeragogu6924]

Crystal clear explanation @piyush Kudos to your efforts in making it soooo clear...

[@TechTutorialswithPiyush]

Thanks buddy, I'm glad you found it helpful 😀

[@justbibek]

Great Explanations sir and thank you sir !!

[@TechTutorialswithPiyush]

welcome

[@mwaqze]

Like always, Always great.

[@TechTutorialswithPiyush]

Thank you 😊

[@sneham2228]

Your presentation skills are very good and it makes easy to understand the concepts

[@TechTutorialswithPiyush]

Thank you so much! Appreciate the feedback

[@kr1sandy231]

Excellent Video.

[@shashikantdivekar7839]

Excellet explanation. Thank you.

[@TechTutorialswithPiyush]

Glad it was helpful!

[@harshavignesh1]

Thanks for providing the overview :)

[@TechTutorialswithPiyush]

My pleasure!

[@Imran_kpk]

🎉🎉🎉 we appreciate your work ❤

[@TechTutorialswithPiyush]

Thank you!

[@sanudasomkar9734]

Thats for best k8s tutorial brother. Your videos are very helpful to understand the concept❤

[@TechTutorialswithPiyush]

Glad to hear that, happy learning!

[@shivamshekhar5423]

I think this was the best explanation for the architecture 😊

[@TechTutorialswithPiyush]

Glad it was helpful!

[@bapirajumadarapu4050]

yaah piyush we found this video as valuable and i share ur paylist with friends too

[@TechTutorialswithPiyush]

Thank you my friend! It means a lot ❤️

[@umeshbhosale905]

Great explanation. !!!!!

[@TechTutorialswithPiyush]

Thank you!

[@yogibisai647]

Wonderful session

[@TechTutorialswithPiyush]

Thank you!

[@SandeepChikkala-i4s]

Great explanation

[@TechTutorialswithPiyush]

Thank you

[@UsmanArif-j1m]

Bht Achy Sai Explain Kiya Apny Sir

[@TechTutorialswithPiyush]

Thank you bro!

[@pinkyk3364]

Prefect explaination thank you

[@TechTutorialswithPiyush]

You are welcome!

[@artbart9080]

Good explanation.valuable video!

[@TechTutorialswithPiyush]

Thank you!

[@MalekJellali-g2z]

thank u for this amazing series ❤💫

[@TechTutorialswithPiyush]

You're welcome 🙂🙏

[@sre9123]

Looking forward to learn your approach on this 😊

[@TechTutorialswithPiyush]

Thank you

[@julioguimatsa8902]

this is my first time ever to learn kubernetes and I didn't struggle to grasp the concepts

[@TechTutorialswithPiyush]

That's my plan and intention behind this series, no one should struggle with the learning!

[@SureshKumar-fi4vh]

You have explained kubernetes architecture in simple way. Its really good. And one more thing can be cover multi master node archtecture also in the future videos.

[@TechTutorialswithPiyush]

Yes definitely! It is covered in one of the later videos. Thank you for the feedback :)

[@johnpaulden007]

Keep going !!

[@TechTutorialswithPiyush]

That's the plan!

[@HPKnowValley]

Very well explained !!!👏👏

[@lalitha5127]

Thanks for the information

[@TechTutorialswithPiyush]

My pleasure

[@kundankumar5395]

Great Explanation

[@TechTutorialswithPiyush]

Thanks!

[@haythemmarouani1644]

thank you for this explanation !!

[@TechTutorialswithPiyush]

Welcome brother

[@MarketLake]

Very nice and easy to understand

[@TechTutorialswithPiyush]

Thanks

[@AndeSahith]

great explanation @piyush bruh, thanks a lot.

[@TechTutorialswithPiyush]

Welcome!

[@Imran_kpk]

Amazing and best definition ❤❤ ne happy bro

[@gibrankhan8232]

Nicely explained!

[@TechTutorialswithPiyush]

Glad it was helpful!

[@GrigTech]

Thank You Piyush

[@TechTutorialswithPiyush]

You're welcome

[@JohnFranklin55]

thank you Piyush

[@girishk1142]

interesting and hope in future videos we will get good practical knowledge too :)

[@TechTutorialswithPiyush]

From next video onwards, everything is hands-on

[@TravellingSquad]

It's called informative video Piyush 💯 very well explained.. Thank you for your support...🙏

[@TechTutorialswithPiyush]

I am glad you found it helpful. Thank you for the support.

[@ruddyivanclarosfernandez8526]

God Job!

[@CM-qd9rb]

One word "Awesome"

[@TechTutorialswithPiyush]

thanks

[@Ravin103]

Wonderfully

[@patrickngare]

Well explained i love this

[@TechTutorialswithPiyush]

Thank you

[@KRISHNAKUMAR-yj3dx]

Thanks a lot!!!!!!

[@TechTutorialswithPiyush]

You're welcome!

[@prasantkumar1986]

very detailed explaination

[@TechTutorialswithPiyush]

Awesome, glad you found it helpful! 👍

[@uttamsharma9042]

Great day

[@balamurugant6479]

Nicely explained

[@TechTutorialswithPiyush]

Thank you so much 🙂

[@onkarcharkupalli6611]

Hi Piyush, Excellent explanation and easy to grasp without getting overwhelmed. Also, can you explain role played by controller manager here 19:33. It was not covered in kubectl create pod process explanation. Thank you.

[@TechTutorialswithPiyush]

controller manager controls all the controllers in the cluster such as node controller which ensures that your node is healthy all the time, deployment controller that ensure that your pods are restarted when crashed and so on. It monitor the cluster and make sure that your desired cluster state is matching with the actual cluster state. It talks to apiserver and apiserver communicates the action to be performed to Kubelet

[@onkarcharkupalli6611]

@@TechTutorialswithPiyush Understood! Thank you.

[@mohanmurali7975]

Wow really great explanation ❤ed it the way you explain using pictures 😊

[@TechTutorialswithPiyush]

Thank you so much 😀

[@atishjayalwal215]

thanks for course

[@nousheensafoora206]

Thanq so much for your valuable class

[@TechTutorialswithPiyush]

Keep up with the learning journey

[@TheZikori]

Great work sir

[@TechTutorialswithPiyush]

Thank you so much!

[@bhanubisht8]

Completed the video my Day 4

[@TechTutorialswithPiyush]

Keep it going

[@Sreedhar-Berlin]

Etcd , kubeproxy , apiserver , pod

[@chebrolunarendra]

Thank you

[@SinaTavakkol]

Thank you so much for the videos :)

[@TechTutorialswithPiyush]

welcome

[@vm_naveen]

Thank you :)

[@TechTutorialswithPiyush]

You're welcome!

[@KELVINALLEN-e9f]

Awesome

[@TechTutorialswithPiyush]

Thank you!

[@emurat2825]

thank you !

[@GowthamKumar-vf9qc]

Thank you

[@TechTutorialswithPiyush]

You're welcome

[@KsChina]

Great! Thanks!

[@mertcancam]

Just a small clarification: a Kubernetes node doesn’t necessarily have to be a virtual machine-it can also be a physical server. It might be helpful to mention this in the video, as it could be a bit confusing for beginners. Great content overall-keep up the amazing work!

[@TechTutorialswithPiyush]

I have mentioned it in other videos of the series, if not in this one. thank you for the feedback

[@rowervem]

great job brother!

[@TechTutorialswithPiyush]

Thank you

[@salmanbintariq007]

easy to understand the workflow of K8's. Please also explain Kubernetes API admission controller in upcoming lectures! Thank You

[@TechTutorialswithPiyush]

Thank you Salman. Admission controller is more of a CKAD concept and not part of the CKA that is why I have not included it but I will cover all these important topics after we are done with CKA

[@sproptech]

nice explaination Sir!

[@TechTutorialswithPiyush]

Thank you 😊

[@UMahi-nq7xe]

explained clearly amazing

[@Puran2307]

awesome

[@kamaltamang3890]

it really is good explanation

[@TechTutorialswithPiyush]

Thank you!

[@SinghBalraj102]

Hey Piyush, awesome work! Bro. Just a quick suggestion: consider making your profile picture smaller so that the content is easier to see.

[@TechTutorialswithPiyush]

Thank you Balraj! Actually it helps with keeping the session interactive. I would saved 2X time, had I recorded the videos with the cam on, 2X time saving in recording and 2X time saving in editing but that wouldnt be a good session and people will start losing interest. I had to keep the cam to a minimum size to keep that interaction but I truly understand your concern. It shouldnt hinder the visisbility. I will work on that definitely, thank you once again. This series has been recorded already but I will make some changes for the future videos.

[@rowervem]

I thought APIserver will create the pod then update back to ETCD which is the moment ETCD create a record in the database itself. Seems like I am wrong, the record will be created first then the object (pod, deployment) will be created later. Can you help to confirm?

[@TechTutorialswithPiyush]

It will create an entry when the pod creation request is sent to api server, once the pod is scheduled, it will update the entry

[@Ganesh-tc4pi]

Hey pyush Is it possible to modify etcd data which is stored

[@TechTutorialswithPiyush]

As it is a key value store, you can query the db, but not something that we usually do etcd.io/docs/v3.5/tutorials/writing-to-etcd/

[@debillion]

what is then the difference btw etcd and kube config?

[@TechTutorialswithPiyush]

kubeconfig has your context , authentication details using which you login to the cluster. kubectl uses kubeconfig to authenticate the client to apiserver. etcd is a key value datastore that stores all the configuration data and your cluster state.

[@jensenjose682]

Kubernetes!! 🤩🤩

[@abc-edm]

Thank you Piyush, very clear explanation, just want to comment on the end to end flow, I think you missed CRI at the end. I am very enjoying your video

[@TechTutorialswithPiyush]

You are absolutely right, I'll make sure to include CRI in the next update. Glad you enjoyed the video!

[@YogeshSharma-cs2pq]

Hi Piyush, can your this series help me prepare for my Azure DevOps interviews that involve Kubernetes? I am struggling because I have little hands-on experience with Kubernetes in my career.

[@TechTutorialswithPiyush]

Hello Yogesh, Yes, it will definitely help. Along with this series, check out the Azure DevOps series as well: kzbin.info/aero/PLl4APkPHzsUXseJO1a03CtfRDzr2hivbD Here's the video about Azure devops interview questions as well: kzbin.info/www/bejne/q2bYhHeDgp6smsU Good luck

[@christober.s7006]

Waiting

[@TechTutorialswithPiyush]

Thank you