Day-31 | KUBERNETES ARCHITECTURE USING EXAMPLES | Kubernetes is Easy
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- Опубликовано: 1 июл 2024
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KUBERNETES IS EASY
===================
Don't feel so ??? Watch the next 10 videos on the channel and you will second me .
DAY-31: KUBERNETES ARCHITECTURE USING EXAMPLES
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What will you learn ?
1. Kubernetes Architecture using Examples
2. Kubernetes Control plane
3. Kubernetes Data plane
4. Kubernetes Components with Examples
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I have struggled with everything in Tech before I met you. Thank God for Indians, thank God for your life
Thank You Sir! It was easy to understand!
Pod - A Kubernetes pod is a collection of one or more containers, and is the smallest unit of a Kubernetes application
k8s architecture
# Control plane (master node)
## api server - core component of k8s, accepts all incoming reqs, exposes k8s to external world.
## etcd - key value store, cluster related infos.
## scheduler - scheduling pods or resources on k8s, receives info from api server & acts on it
## controller manager - ensures controllers like replica set are running
## cloud controller manager - like terraform
# Data plane (worker node)
## kubelet - creates pod, ensures pod is always running
## kube proxy - provides networking like Docker0, default load balancing
## container runtime - runs container inside pod
this is my basic understanding. will improve it in future.
😍😍
Kubernetes (sometimes shortened to K8s with the 8 standing for the number of letters between the “K” and the “s”) is an open source system to deploy, scale, and manage containerized applications anywhere.
I don't know i become a hero after completion of this course but I truely tell that from the bottom of my heart you are the real hero for sharing such a realistic data for free...
Thanks alot for the kind words .. Can you please share the channel with your friends and groups ..
Keep doing great work Abhishek. Appreciate your efforts 👍
I was thinking the same thing.
### Architecture of K8s
- Data plane (Worker Node) → 3 components:
1) Kubelet (Creating and managing pod)
2) Kube Proxy (uses iptables in Linux machine)
3) Container Runtime (enviornment)
- Control Plane (Master Node) →
1) API Server (exposes to external world)
2) Scheduler (Scheduling pods or resources in K8s)
Receives information from API server
3) etcd: Backup service (key value store)
4) Controller Manager
Example: Replica Set
5) CCM (Cloud Controller Manager)
- No need for on-premice
Hands down, That is the best Kubernetes explanation ever. You are really a Master at Work.
Thanks alot abhishek sir for explaining k8s arch in detail
after 30 days. Spending this much of my time on your videos is really really worth of watching and still excited about next next videos and getting interested on the tools of DevOps. Much appreciated for your efforts Thanks a lot man.
A big thanks for outstanding kubernetes sessions👍👏
Thank You very much for share very imp content for Kubernetes.
Best explanation of Kubernetes arch ever seen. this course is recommended for every devops aspirant.
😍😍
Very well explained k8s architecture 👍i used to scare about it a lot but now its very clear to me🤗
Thank you so much Abhishek 🙏
Hey Abhishek, you are just awesome.
I am following your tutorial and it's like you give a detailed explanation and that is very easy to get into our minds , I can't thank enough for this Abhishek anna and even I'm making notes from few classes that is helping me to understand whenever I see them , Thankyu Abhishek , Hatsoff 👏..
Understood Every Bit of the Video, Fantastic explanation Abhishek sir 🔥
Appreciating your work
Keep this things always free cause once a wise man said -
“Only knowledge is the one which get increases when you share it with another”
Love your teaching❤
Thanks a lot
This was more than just a course video, Thanks !
You're welcome!
Thank your from the bottom of my heart this huge information for free more wins for you Sir❤
Excellent i grasp every word of your session much more informative.
Thank you so much 😀
awesome teaching
Awesome Explanation. you are making complex topic to understand easily
Thanks a ton
The way you are explaining the Kubernetes(Where everyone scares).
Just wow.🤩
Most welcome !!
Thank you so much abhishek sir
After watching this video easily understood the k8s architecture....tnq bro you are doing great job for us🤝❤️
It's my pleasure
The way you Explained was Awesome👌👌
❤️
Amazingly explained.Thank you so much Abhishek :)
Most welcome
Hi Abhishek ….Thanks for the wonderful video…can you please tell the difference between ccm and terraform?it shall be really helpful
I don't know how he is teaching us in easy way? I have bought the KodeCloud as well but Abhishek is literally providing us in depth knowledge whatever he takes it. The amount overview in this Video I got is awesome. Thanks again bro
I bought that too, but still feel like i know nothing in kubernetes. Thanks to Abhishek for connecting all the loose ends so effortlessly.
Really Awesome Bro, clear explanation. Thank you
Awesome. Please share the videos with your friends and groups
very well explained Abhishke bhai...great learning from the session.
It's my pleasure
Just awesome. Thankyou so much
Most welcome 😊
one thing for this video.... just crisp and clear
Thanks alot
thank you very much Abhishek. learning from cameroon cemtral africa
Thanks !!
Loved it ❤❤
Just mind blowing..
Thank you
Superbly explained
Thank you 🙂
K8's architecture
##Control Plane
1) Api server - This is the heart of k8's, it acts as an entrypoint to the architecture and it listens to all the requests from data plane or from users and acts accordingly
2) etcd - This is like a storage space where its stores the info about clusters in key value format and used to restore and backup
3) controller manager - It is used to manage the controllers like replicaset, ingress controleers and make sure the controllers are running all the time
4) scheduler - as the name says it is used to schedule the resources in a nodes.
##Date plane
1) kubelet - this is used to talk to the api server and make sure the pods are running accordingly or not
2) kube-proxy - this is a networking component, assigns the IP's and balances the load.
3) container run time - provides the run time environment for containers to execute.
Awesome job as always!
Thanks again!
Control plane components are - api server, etcd, scheduler, controller manager, ccm _ cloud controller manager.
Node components - kubelet, kube proxy, container runtime
Container runtime is equivalent to dockershim in docker
Kubelet is responsible for running and ensuring pod is always running. Kubelete interacts with container-runtime to i e cri-o or xontainerd to run the container inside pod.
If pod is not running kubelet will inform kube_apiserver.
Kub
*Kube-proxy - provides, networking, ipaddresses and load balancing for the pod to communicate, Implements iptables..
Nice explanation Abhishek. Thanks:)
Welcome
At 9:42 you mentioned "There is a component in k8 I'll keep that component in suspense" I just love the way you teach the subject. Amazing teaching skills. More Power to you.
that component is api server since every request of resurce creation first has to go through the api servre.
just one word awesomeeeeeeeeeee
Thanks
Gooood explanation...😊
Thanks a lot
Excellent video
Thank you very much!
you seriously nalied it sir .
Lucid & clear
Thanks
This session is gold 🙂
Thanks
Great Job
Thanks
I am going through the DEVOPS ZERO TO HERO course, today i started KUBERNETES after gone through the DAY-31 k8's architecture video i got a clear idea on CONTROL PLANE and DATA PLANE and total components in it.
THANKS to #ABHISHEK VEERAMALLA.
😍😍
Hi bro ,
When I tried to setup HA cluster , and see the running pods It was there but when I see with docker ps -a
there are no running containers , and when I see kubectl describe node ,
the container runtime was containerd,
from latest versions does k8s deprecated use of docker as cri?(as docker is also bulit on containerd) and started using containerd (Container Runtime Version: containerd://1.7.2)
So to access that I tried to install crictl as client to see containers. Can we use our interested cri or its internal thing that can be done by k8s.
Hi Abhishek,
A quick question containerd, dockershim, cri-o are all daemons, correct? And the actual runtime is runC or kata.
So can we say that container runtime encompasses two components? A high level process called daemon(containerd, dockershim, cri-o) and a low-level runtime in runC or kata or crun?
Kubernetes is commonly abbreviated as "K8s", which is a shorthand notation that replaces the eight letters between "K" and "s" with the number 8.
Awesome
Thank you ^^
nice explanation brother..k8s 8 letters between k-s
Yes, correct
AWS GCP Azure are lols. ABHISHEK CLOUD IS THE FUTURE 😊😂
Lol
@abhishekveeramalla
Are Sir, I searched udemy coursera everything but yours is best among all,
I am cloud engineer at Hyland
Is there any paid course of yours as well??
My first comment, you are hero of k8s.
Thanks alot
thank you .I have gone through Udemy courses related to k8s but none of them explained like you
Thanks 🙏
Kubernetes is also called as k8s because in between k & s there are 8 alphabets
Very Useful....tq
Because word Kubernetes has 8 letters between the first and last letters
Awesome 😎
You are a legend 🥰
😀
in between K and S total 8 letters as a shortcut we call it as k8s
Hi Abhishek I am always scared of these Docker and Kubernetes, and had lot of hesitation to learn as I felt these must be very complicated (from the paid coursed i ahve taken🙄) even to understand theoretically , Thanks a ton you made me understand K8s so well, it really felt easy. (I am not sure how my practical exposure will be :🤔 i am sure i will learn from your videos. Kudos to you.
Amazing .. Thanks
Nice Abhishek
Thanks 🙏
Thank You ❤
Thank you so much 😀
Great explanation Abhishek! Found it really useful. Understood the workflow and the use of K8S components. Now my doubt is can we use this simple architecture to explain it to the interviewer? Thanks.
Yes yes
It's like a naming convention, n there r exactly 8 letters in between K and S. I think it's called as numeronym
Awesome
In between the letters k and s there will be 8 letters 'ubernete'. That is the reason it's short form is k8s k'ubernete's
Awesome
What's the difference between controller manager and kube proxy?
There are 8 letters b/w K and S in kubernetes letter. thats why its known as K8s
There are 8 letters between K and S. That's why also known as k8s
Nice❤
Welcome
Will these be enough if we wana give kubernate developer associate examination??
So basically , you wanted to say that master component is control plane component and worker component is data plane component
if you give the practical experience of each and every thing like kube proxy how it works, controller manager and cloud controller thx
Yes
Today only in interview they asked this question and i was not able to answer but ya make sure I will able to answer this question from next onwards.
Awesome
Between k and S of Kubernetes has 8 characters , hence the reason k8s .
❤
Thanks
K8's : In the case of "Kubernetes," there are 8 letters between the 'K' and the 's,' so it's abbreviated as "K8s."
thanks for u r knwlg and a special thanks for u r suggestion to add the knwldg shared by u to LinkedIn ..... thank you Abhishek for u r valueable ⌚ 🙏
Welcome 😁
eight alphabets in between K and S
Kubelet will always ensures that if the POD is running or not. suppose if one of the POD is not running Kubelet will inform to Control Plane Component.
to which Component it will inform ?
my guess is Kubelet will inform to API Server
Yes. You are correct. It notifies the API server
There are 8 words exists between K and s that's why we can call k8s
Hi @Abhishek
Your videos are too good and easy to understand. Iam looking for the concept Node affinity. Could you please help me here.
🙏
Could you please help me on Node infinity topic.
Kubernetes called K8s because there is 8 characters in-between k and s!!!1
Day-31 done ✅
Great, keep going
between k and s 8 letters so k8s
One request from my end , can you please show some real time scenarios in kubernetes
Noted
Counting the eight letters from "K" and the "S"
Awesome 😎
Kubernetes: take first and last letters and replace the middle 8 letters 'ubernete' with 8 = K8s = Kubernetes
😀
Hii abhishek , i have a doubt that , in a pod how many containers we can maintain ? it dont have any limit
It depends on your applications .. The ideal case is just one and you can have another container as a side car or init container.
In Kubernetes Master components, where is KUBECTL, you missed it or they removed it?
kubectl is not part of the master component. There is client-go which is part of the api server that listens to the api calls made by kubectl.
@@AbhishekVeeramalla Thank you for the information...
Time stamp 21:00
Why don't we require on primises CCM
Dear Abhishek, if master nodes fails ,worker node will work or not? If Yes what is the logic behind it. This is the common question now a days. Please explain this.
Worker nodes will work with few limitations, since actual applications are running on worker nodes. But you can't create a new pods or if existing pod goes down you can't create new etc.. hope you understand 😊
@@karthicOfficial786 If new pod wont create then it will be a down time for application,i believe some auto healing mechanism has to be work on it.
Which is best For Pratice Kubeadm ya Minikube
Minikube is cluster.. you can use for practice.. kubeadm is utility for creating k8s clusters
sir please i didnot understand the concept of cloud controll manager (CCM)
Cloud Controller Manager is a Kubernetes component which allows cloud providers to add their custom logic or add the capabilities to implement their cloud resources for Kubernetes.
For example, if you create a service of type load balancer or AWS, a public IP address is allocated to the service .. this is taken care by CCM.
HELP HELP
15. Default inventory is the only way to provide list of hosts?
a. True
b. False
U can use your own inventory
HELP HELP
1)In Devops CI/CD what is Continuous Delivery?
a. SourceCode - Build - Test - Deploy without any human interaction
b. SourceCode - Build - Test - Deploy with human interaction of
c. SourceCode - Build - Test - ready to Deploy on a single click
d. None of above
It should be The first one : a bcz DevOps CI/CD means automatisation and in automatisation we need minimum even no human interaction in building application from dev to end users ...
❤️
@@eadmund.SeoYul i think it should be c. SourceCode - Build - Test - ready to Deploy on a single click why because question it self is about delivery not about deployment so here we are just delivering our code to any team not not for any deployment so delivery is pre step of deployment.
please correct me if i am wrong..
K (ubernetes)=8 S -> K8s
K is the starting word S is the ending word, and 8 is for the words between K and S
Awesome
Kubernetes - octo
Awesome 😎