Kubernetes Crash Course: Learn the Basics and Build a Microservice Application

[@KodeKloud]

💻Free Lab Access: kode.wiki/kubernetes-labs

[@gupteshchoudhary7049]

😮. 😅😢 pol de dr,ch CX 0

[@Hanamanta-s3f]

😮😅😅

[@Hanamanta-s3f]

😮😅😅😅

[@AnkitKumar-me9ck]

​...

[@Aaliya_mulani1234]

​@@gupteshchoudhary7049😢😢😢😢good

[@HellCRICKET]

Completed 50% course planning to give exam in May/June. Best course available in the market Definitely willing to complete the course 💯 just need motivation to go on Update: Given exam on June month & cleared CKA

[@KodeKloud]

All the best! for the exam! We are glad you found our video helpful. Like and share our video with your peers and also do not forget to subscribe to our channel for not missing video updates. We will be coming up with more such videos. Cheers!

[@give-me-guts-to-accept-truth]

Are you talking about this video or any course? Please reply

[@behrozkarim8588]

A perfect combination of lectures and hands-on labs.

[@KodeKloud]

Thank you so much : ) We are glad to be a part of your learning journey

[@mohanadnasar1515]

1 hour in , and i am loving it. I used to start a course and not continue it due to not understanding anything. Defnitely best course out there. Appreciate the good work

[@KodeKloud]

Thank you so much for your kind words! 😊 It's fantastic to hear that you're enjoying the video and finding it helpful. We're thrilled to have you with us on this learning journey! If you have any questions or need further clarification on anything, feel free to reach out. Keep up the great work! 💪🚀

[@ArunaNishantha]

Absolutely loved this course! The simplicity and clear flow made it so easy to follow along. The content is top-notch, and the lab sessions were super helpful. Best step-by-step guide I’ve found so far. Thanks for making such great content!

[@bullheadrider]

I have been seeing a lot of tutorials till i got to this one. This is the best easiest tutorial on this world about Kubernetes .

[@WangJiawei99]

Totally agree

[@user-il8jq7jl2g]

I took your docker course from udemy. It is truly amazing how well designed your course is. concise, efficient, on point!

[@KodeKloud]

Wow, thank you for the fantastic feedback! 🚀 We're delighted that you found our Docker course on Udemy to be well designed and efficient. It's great to hear that it hit the mark for you. Let us know if there's anything else we can do to support your learning journey!

[@truhandelosvalles8219]

What an amazing course!! I appreciate the effort and the free labs, I feel so much more confident on why and when to use K8s now! Thanks again!

[@KodeKloud]

We are glad you found our video helpful. Like and share our video with your peers and also do not forget to subscribe to our channel for not missing video updates. We will be coming up with more such videos. Cheers!

[@a.nk.r7209]

**CAUTION** worker-app-pod will give you error because of authentication. the latest postgres docker image have changed the auth mechanism internally hence the error. You should use "postgres:9.4" version of the db to run it perfectly.

[@nasrudinansari6278]

Hii

[@KodeKloud]

Thanks for watching our video and sharing info. Cheers!

[@Chakree45]

Thanks for the update ❤

[@wiz__obi]

my worker-app-pod went into crashloopbackoff and the logs shows the following error: ➜ k logs worker-app-deploy-584644d74d-52dwq System.NotSupportedException: Authentication method not supported (Received: 10) at Npgsql.NpgsqlConnector.ParseServerMessage(ReadBuffer buf, BackendMessageCode code, Int32 len, DataRowLoadingMode dataRowLoadingMode, Boolean isPrependedMessage) at Npgsql.NpgsqlConnector.DoReadMessage(DataRowLoadingMode dataRowLoadingMode, Boolean isPrependedMessage) at Npgsql.NpgsqlConnector.ReadMessageWithPrepended(DataRowLoadingMode dataRowLoadingMode) at Npgsql.NpgsqlConnector.HandleAuthentication(String username, NpgsqlTimeout timeout) at Npgsql.NpgsqlConnector.Open(NpgsqlTimeout timeout) at Npgsql.ConnectorPool.Allocate(NpgsqlConnection conn, NpgsqlTimeout timeout) at Npgsql.NpgsqlConnection.OpenInternal() at Worker.Program.OpenDbConnection(String connectionString) in /code/src/Worker/Program.cs:line 78 at Worker.Program.Main(String[] args) in /code/src/Worker/Program.cs:line 19 Your input helped solve it, by changing the postgres image version to postgres:9.4, i appreciate

[@azarfeyziyev1575]

Thanks for your comment. I used this image. image: postgres:9.4.26-alpine

[@Wbmxlr8]

Wow amazing concept of direct Labs no need to set up dedicated environment to practice kubernetes. I want to do CKD/CKA please bring course on CKA CKD.

[@KodeKloud]

Hi, we have the courses of courses on CKA in our website: kode.wiki/CKA_LearningPath_YT

[@mrleft8274]

This is a fine template for how tutorials should be done. Keep up the amazing work!

[@KodeKloud]

Thanks a ton! Your support makes all the difference 💙

[@anjaligujarathi287]

is there GIT hub where all the labs and pod and service creation available?

[@chetan.budathoki]

Glad to see you responding to all the comments. That's sweet.

[@gautamerande]

Hello Mumshad! Thank you for uploading this course to youtube! Why doesn't the worker pod need a service? How do the redis and postgres pods communicate with the worker pod?

[@KodeKloud]

Because the worker doesn't need to be connected by other services such as the app pod. The worker pod connects to Redis and Postgres pod by service in Kubernetes.

[@lookback6314]

There is huge labor in this course. Thanks a lot!

[@KodeKloud]

You are welcome!

[@linux2650]

Just started this one, really amazing course and labs! Thanks a lot

[@KodeKloud]

Glad you like it!

[@boopumer]

Thank you really much for this video. I started to use Kubernetes at my new workplace for the first time and your course opened my eyes and gave me a solid base understanding of kubernetes. The example in the end with the application helped alot!! Really appreciate it!

[@KodeKloud]

We are glad you found our video helpful. Like and share our video with your peers and also do not forget to subscribe to our channel for not missing video updates. We will be coming up with more such videos. Cheers!

[@nehamane2112]

Ll

[@attitudebhakiro8302]

Thanks, I got to understand kubernetes better. Hands on Labs helped me to practice effectively

[@shashankjoshi8250]

No words !! Just Amazing !! It was awesome !! I have doubt it would be better how we can have a persistent volume in the kubernetes cluster ?

[@jasnilmk2844]

Perfect, going thourgh various tutorials, but this one got all topics and confusion clarified. thanks.

[@KodeKloud]

Glad it was helpful!

[@soulofhogwarts]

--link is deprecated and it no longer in usable. but docker everything seems to work fine just not individually running containers.

[@KodeKloud]

Thank you so much for bringing this to our attention. Could you please tell us which link is not working apparently?

[@soulofhogwarts]

@@KodeKloud not any link but '--link' flag. I get this error while trying out the commands with link flag that link flag is depracted.

[@jwine1957]

Is the voting app in this example stateless or statefull? Great course, very valuable considering its free.

[@KodeKloud]

Hope you enjoyed our video! We have a ton more videos like this on our channel. We hope you will join our community!

[@Aries-kross]

So I tried to connect the application to my rds postgres but i am struggling with it, db is not connecting, any advice on how to go bout that

[@danchisholm1]

so so helpful. thank you. i am taking the course as i watch this

[@abhishekkumarsrivastava7677]

Could someone please share resources on how to clean up the node from the Kubernetes cluster so that it can be used as a fresh node again? Also how to clear up master such that to create a new cluster together

[@paragjadhav4735]

What are the Limitations Of Visual code Terminal In comparison to the Inbuilt Zsh ( mac) , Bash ( Ubuntu) or Respective OS Terminals

[@deyjishnu]

No limitation as such

[@KodeKloud]

In VS Code terminal, you can chose any shell you want, such as Zsh, bash, sh,...

[@tariqueansari3043]

Amazing. Hats off to you guys for keeping it free.

[@KodeKloud]

Hi, we appreciate the kind comment! enjoy!

[@pyalgoGPT]

Any discount voucher for yearly subscription?

[@KodeKloud]

Sure please reach out to us at [e-mail] and we will help you with it.

[@marykuttyabraham1702]

😂

[@saoudahmedkhan2549]

Thanks a lot, you are doing great for the community

[@KodeKloud]

Glad you think so!

[@divyareddy7622]

thankkkk uu, the best tutorial on kube ------doubt : at 50:08 ..... from where do we get the name of the new image

[@KodeKloud]

You can get the image tag of nginx here hub.docker.com/_/nginx

[@biharlearning9294]

what is difference between continerd and docker

[@jcvirtcloudconsultancy7552]

Docker is a technology that allows you to create, deploy, and run applications in containers. A container is a lightweight and portable executable package of software that includes everything needed to run an application, including the code, libraries, dependencies, and configurations. A container is an isolated environment that runs on top of the host operating system and has its own file system, network interface, and resource allocation. Docker is a tool that simplifies the process of creating and managing containers. In other words, Docker is a platform that allows you to create and manage containers, while a container is an isolated environment that can run an application. The short version : Docker is a technology for managing containers, and a container is an isolated environment for running an application.

[@abdulmatin234]

@@jcvirtcloudconsultancy7552 I think the question is about "containerd" not container. So the answer would be that initially docker was the runtime and technology for running the containers, but as the time gone by CNCF introduced CRI(container runtime interface) for kubernetes which is the open standard for using pluggable runtimes in kubernetes and not getting stuck with just docker. So docker extracted the containerd runtime and donated it to CNCF which is a runtime used by kubernetes as well as docker today. It follows the OCI(open container initiative) standard for building the container images. So, all the runtimes which follows the OCI format can be used with kubernetes via CRI. another options are runC, kata-containers, gvisor, etc.

[@jcvirtcloudconsultancy7552]

@@abdulmatin234 nice one - thought "Containerd" was a typo

[@KodeKloud]

Docker is a broad set of technologies that are used to work with containers. containerd is an example of a container runtime. A container runtime is that process that does the actual work of creating, running, and destroying containers. Docker uses containerd as its runtime

[@assortedpost]

This is excellent. Can you please add the ideal architecture?

[@KodeKloud]

We'll look into incorporating some architecture examples in future videos.

[@pugazhendhir1211]

Hi team I purchased CKA and CKAD in udemy.. few days I didn't access it.. suddenly my account is disabled. I don't get reset password email as well. Can you please help to activate my account.

[@KodeKloud]

Hey there, we are really sorry for this inconvenience. Our teams are currently checking on this. If you would like a follow-up regarding this issue, please forward your inquiries to our support team at [e-mail], and our support team will assist you.

[@guellordnzaou6887]

Hi sir , i got stuck in Labs-replicaset section , where they ask to correct the apiVersion before creating a replicaset-defintion-1.yaml file, i edited the file but i am unable to save changes, so how to save the file after editing?....thanks. I am doing lab as i am a beginner. please help

[@nazimarahmanskitchen6378]

wq!

[@KodeKloud]

Please learn basic knowledge about vim, you can refer to github.com/kodekloudhub/community-faq/blob/main/docs/vi-101.md

[@infotechsavvy4981]

Hi Sir, I finished my course on "DevOps - The Introduction Course" on udemy, but I can't download my Certification, its greyed out. Any issue on this?

[@KodeKloud]

Can you please report this to [e-mail], we will investigate it in detail. Thanks.

[@a_maxed_out_handle_of_30_chars]

simple and to the point, thank you bhrata :)

[@nabutovsky]

Amazing work! Thank you ❤️

[@KodeKloud]

Thank you too!

[@machismotv]

this is great for a visual learner!

[@kranthichamp3002]

best for devops learners ..quality content 👏👏

[@KodeKloud]

Glad you think so!

[@yogeshwaran1998]

Hi Sir, at 53:18 host='redis-db' will only work if we have set an env variable or if there is a configmap applied right ? Or will the application automatically refer to the service name 'redis-db' ?

[@KodeKloud]

The application will connect to redis-db(service Kubernetes) as long as the redis is in the same namespace. You also can replace redis-db with env variable and then overwrite it with env in the pods template or envFrom configmap.

[@songstowalkalone]

small note for newcomers: kubectl rolling-update is deprecated in favor of kubectl rollout

[@KodeKloud]

Thanks for watching our video and sharing your info. Do subscribe to our channel and stay tuned for more.

[@songstowalkalone]

@@KodeKloud i am already a kodekloud engineer :)

[@bhaveshshah512]

Hi Mohammed Great Work to Present the Kubernates

[@KodeKloud]

Thank you so much : ) We are glad to be a part of your learning journey

[@rekhakalasare4910]

Your such a genius sir.

[@KodeKloud]

Wow, thanks

[@himanshusharma832]

Unable to Start with last Lab of Voting App, Please help for the task of vote-service

[@KodeKloud]

We apologies for the issue, could you please email us the concern at [e-mail] and we will investigate it.

[@kshitijbhatnagar8035]

This is such a good tutorial. The labs part is simply amazing. I was really looking for this kind of tutorial, I am glad i found this. Recommending this to everyone.

[@orasul78]

15:48 - -o=wide is missing.

[@KodeKloud]

Good eye! Our mistake!

[@manojkumar-jt3fw]

There r 2 courses on kubernetes. Which one should I learn ? Is it absolutely necessary to go through beginners for kubernetes ? Or i can directly go for cka course?

[@akflopshow5311]

Directly go to CKA course.

[@manojkumar-jt3fw]

@@akflopshow5311 I am taking about CKAD & CKA. Can i skip CKAD and go for CKA directly ?

[@KodeKloud]

It is based on your experience. If you have a basic knowledge of Kubernetes you can go directly CKA course. Otherwise, you better learn beginners for the Kubernetes course.

[@manojkumar-jt3fw]

​@@KodeKloud I enrolled in kodeknloud yesterday. I found out that u introduced ckna course. Can u please mention in which order i should complete ur 5 courses on Kubernetes. ckad, cka, cks ,ckns , kubernetes for beginners.

[@lostfrequency89]

how did you get the ip for curl @1::00:09 ?

[@KodeKloud]

This IP was taken from the IP of the node. We can use any IP of nodes we want.

[@lostfrequency89]

@@KodeKloud thanks 😊

[@kashifashraf9234]

can you fix the image as i am getting following error pp_worker:v1" in 36.232455052s (36.232469789s including waiting) Normal Created 32s (x4 over 72s) kubelet Created container worker-app Normal Started 32s (x4 over 72s) kubelet Started container worker-app Normal Pulled 32s (x3 over 71s) kubelet Container image "kodekloud/examplevotingapp_worker:v1" already present on machine Warning BackOff 8s (x7 over 70s) kubelet Back-off restarting failed container worker-app in pod worker-app-pod_default(9e82f752-3ea9-4896-bd14-e87f7cd22d2b)

[@greathelmm]

same here. worker doesn't work. lulz

[@KodeKloud]

Please refer to kodekloud.com/community/t/failed-to-pull-image-kodekloud-examplevotingapp-worker-v1/150437

[@ganeshyv2043]

Is this course in enough anout kubernates or its a part.?

[@KodeKloud]

No, this video is not enough for getting certified in Kubernetes. However, this will help you kickstart your career in Kubernetes and make your fundamentals strong.

[@cassiojp]

Amazing, thank you so much

[@KodeKloud]

You're very welcome!

[@Nareshmanam458]

controlplane ~ ➜ cat pod.yaml apiVersion: V1 kind: Pod metadata: name: nginx labels: app: nginx image: frontend spec: containers: - name: ngnix image: ngnix controlplane ~ ➜ kubectl apply -f pod.yaml error: resource mapping not found for name: "nginx" namespace: "" from "pod.yaml": no matches for kind "Pod" in version "V1" ensure CRDs are installed first

[@kelline1979]

apiVersion: v1

[@guellordnzaou6887]

@@kelline1979 So how to solve that issue, i am also stuck that part....unable to create a replicaset-definition-1.yaml file. I edited the file, but i don't know how to saves changes after editing the file. i have try qa no success.

[@kelline1979]

the apiversion should be small letter v@@guellordnzaou6887

[@UDHAYAVANANR]

How do I get the invite to the slack community?

[@KodeKloud]

Check out this link: kode.wiki/JoinOurSlackCommunity

[@st751e]

Really nice lecture and accompanying lab. The "Deploying voting app on Kubernetes" lab was a real nice lab for a beginner.

[@KodeKloud]

Hey, thank you for appreciating our work. We are glad to have helped. Do check out our other tutorial videos and subscribe to us to stay connected. Cheers :)

[@Rgroose]

very very helpful, thanks

[@KodeKloud]

Glad it was helpful!

[@lieandsmile5084]

Thank you guys, looks cool :)

[@KodeKloud]

Our pleasure!

[@anandhukraju9382]

Im really enjoying the k8s course on kodekloud. The explanations paired with the labs are perfect. I'd like to see a video on knative as well.

[@KodeKloud]

We are glad you found our video helpful. Like and share our video with your peers and also do not forget to subscribe to our channel for not missing video updates. We will be coming up with more such videos. Cheers!

[@mahendranath2504]

Thank you so much 😂😍☺️😊😘👍✌️👌

[@KodeKloud]

Welcome 😊

[@cloudlover9186]

Let me know fee structure

[@KodeKloud]

Please check out our pricing page: kode.wiki/PlansandPricing_YT

[@aqibpervaiz1904]

Awesome Great effort sir

[@manishsirwal9881]

I don't know what this course is about, I got just recommended and i clicked it. I didn't understand a thing but i'm curious now what this is about because the comments are really praising the video. If someone can let me know what Kubernetes is i'll be thankful to them

[@KodeKloud]

Hello, Kubernetes is an open-source container orchestration platform that helps automate the deployment, scaling, and management of containerized applications. You can think of Kubernetes as a system that allows you to manage a fleet of containers. It provides a set of powerful tools and features to make it easier to run and scale applications in a distributed environment.

[@pabitrasikdar6784]

Can we clear cka exam by preparing from this video if not i would request please create a cka crash course video sir.

[@KodeKloud]

Hi Pabitra, we cannot make promises here but this video will help you increase both your confidence and chances to clear the CKA exams. Also, we have Kubernetes Learning Path in our website: bit.ly/KubernetesLearningPath

[@Not-just-doing-I.T.]

Getting a little frustrated ... there was no Enrol on this Course button, it was Sign In to Enroll. I used my google account, and I am now on a Dashboard ... this is not in your instructions. I cannot see how to reach this 'Crash Course' and I am therefore unable to reach downloads, seems to be trying to get me to purchase premium content. ...just reselected the link, and I am prompted to 'Change plan to enroll'...I am now more than frustrated, getting annoyed ...Oh, I am now being asked to pay monthly or yearly ... REALLY ANNOYED!

[@srihariiyengar3913]

Would like to enroll for this …

[@KodeKloud]

You can enroll to our Kubernetes course with this link: bit.ly/KubernetesLearningPath. Also, we have Free Week coming up next week with all Premium Courses And Labs are 100% Free For a Week: kode.wiki/FreeWeekApr_YT

[@cristiat]

Mumshad rocks!

[@92ftruct]

where is the free Kube cli?

[@KodeKloud]

Please check the pinned comment

[@pikachu3686]

best course for beginner how to deploy microservices

[@KodeKloud]

Hi, we appreciate the kind comment! enjoy!

[@obinnaezedei856]

Thanks. But the delivery is not really "crash" as in "crash course". This is no beginners course. You run into several challenges and won't know why. For instance, I couldn't do the curl or know where to get the IP

[@KodeKloud]

Hi, thank you for watching our video and for the honest feedback. We will definitely look into this. Do subscribe, like and share to stay connected with us. Cheers :)

[@popcycleism]

Welcome to the world of researching further from what a free course, offering a high level view, can provide for FREE. A small glimpse of what awaits you in the real world 🤡

[@PythonAnaconda-u9q]

Lab is not working

[@tsiriniainarazafindrakoay3890]

Thank you, next ?

[@KodeKloud]

Thank you for the appreciation. You can check our videos related to DevOps and subscribe to our channel to stay updated with all the latest tools.

[@PrinceKumar-hh6yn]

🌐

[@KodeKloud]

Thanks for watching our video. Cheers!

[@PriestleyLorraine-v8l]

Thomas Lisa Perez Kenneth Lopez Mary

[@Luther_Luffeigh]

This what I’m talking about…yeah let’s put more content on KZbin and start making real money…you know…like MrBeast level of money 💵 💴 💰

[@KodeKloud]

Thanks for watching our videos. Cheers!

[@mannamsunny9mannamm738]

❤,,,,,

[@amitghosh9942]

​@@KodeKloud ggggvgggvgggggggvggg

[@sarojpradhan5019]

​

[@ryszardwojtowicz3214]

​@@KodeKloud⁴⁴4⁴

[@zameerahmed1775]

u want ppl to buy ur course ................. the free lab is hopeless

[@electron8817]

This guy is cute

[@KodeKloud]

Thanks for watching our video. Cheers!

[@MrDevilwing]

NO Free lab access !

[@KodeKloud]

Free Labs are here: kodekloud.com/pages/public-playgrounds

[@najmabegum5118]

Oooo

[@ramuyadavyadav1178]

Yu

[@KodeKloud]

Thanks for watching our video. Cheers!

[@anjalishreya9890]

Hello All, can anyone answer my question in which IP we can access this application if we are trying on kodekloud lab and for me worker-app image is not working getting error image pullback. please @kodeKloud check on this why i got that error and I checked twice image name is correct but still its in error state. can you please increase the time for last lab. thanks

[@olusholapacheco]

Same here, image is probably in a private registry... Getting the same as well. Best to buy the course on the official website to see then.

[@edithpuclla6188]

Hi! This worked for me: Use dockersamples/examplevotingapp_worker image instead of kodekloud/examplevotingapp_worker:v1.

[@ChintalaVinod]

thank you boss

[@KodeKloud]

You're welcome!

[@edithpuclla6188]

Lovely video!

[@KodeKloud]

Glad you liked it!

[@ajaykushwaha4233]

No one can teach and no one learn in 2 hours.

[@KodeKloud]

Indeed, by watching the video, you can grasp the fundamental concepts. Appreciate it.

[@codingcambodia]

I got this error with worker deployment. Please help. System.NotSupportedException: Authentication method not supported (Received: 10) at Npgsql.NpgsqlConnector.ParseServerMessage(ReadBuffer buf, BackendMessageCode code, Int32 len, DataRowLoadingMode dataRowLoadingMode, Boolean isPrependedMessage) at Npgsql.NpgsqlConnector.DoReadMessage(DataRowLoadingMode dataRowLoadingMode, Boolean isPrependedMessage) at Npgsql.NpgsqlConnector.ReadMessageWithPrepended(DataRowLoadingMode dataRowLoadingMode) at Npgsql.NpgsqlConnector.HandleAuthentication(String username, NpgsqlTimeout timeout) at Npgsql.NpgsqlConnector.Open(NpgsqlTimeout timeout) at Npgsql.ConnectorPool.Allocate(NpgsqlConnection conn, NpgsqlTimeout timeout) at Npgsql.NpgsqlConnection.OpenInternal() at Worker.Program.OpenDbConnection(String connectionString) in /code/src/Worker/Program.cs:line 50 at Worker.Program.Main(String[] args) in /code/src/Worker/Program.cs:line 19

[@radhey8009]

Same error