How to Troubleshoot Kubernetes Clusters | Kubernetes Tutorial | K21Academy

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📌 In a production environment, you need to manage the containers that run the applications and ensure that there is no downtime. To provide consistent support and service we need to continuously debug and troubleshoot the complete Kubernetes cluster. In this blog, we are going to learn about Kubernetes Troubleshooting.
📌 The process of discovering, diagnosing, and resolving faults in Kubernetes clusters, nodes, pods, or containers is known as troubleshooting. Kubernetes troubleshooting, in a broader sense, encompasses the effective continuing management of defects and the implementation of preventative measures in Kubernetes components.
📌 Three key points in K8s Troubleshooting are:
➡ Understanding.
➡ Management.
➡ Prevention.
🤓 So, want to know about 𝐊𝐮𝐛𝐞𝐫𝐧𝐞𝐭𝐞𝐬 𝐓𝐫𝐨𝐮𝐛𝐥𝐞𝐬𝐡𝐨𝐨𝐭𝐢𝐧𝐠?
➡️ Check out this Video • How to Troubleshoot Ku...
➡️ Check out this blog k21academy.com/docker-kuberne...
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See you in the next video!

[@K21Academy]

💼Join our free Kubernetes class to build your career, get certified, and land a high-paying job in Kubernetes: bit.ly/3X4PiMO

[@khanfa1982]

One of the best videos I have seen on k8s troubleshooting ....

[@K21Academy]

We believe in giving the best to our people. Thanks, keep watching!

[@nruva]

Fantastic, and very practical, video on troubleshooting all sorts of K8s issues. This is really good stuff.

[@K21Academy]

Glad you liked it! 😊 Please do let us know what videos you'll like to see next?

[@purnimashanti26]

Thank you. Excellent practical session on kubernetes troubleshooting. 👍

[@K21Academy]

Glad you liked it! 😊 Please do let us know what videos you'll like to see next?

[@TheRohitprakhar]

A Great one!! Thanks for this.

[@K21Academy]

Hi, Thanks. Do let us know what videos you'd like to see next?

[@rams3099]

Best video for troubleshooting ❤

[@vaidyaes]

Excellent video!!!

[@K21Academy]

Glad you liked it! Do let us know what video you’d like to see next?

[@arturstrubacs4964]

Very good troubleshooting and explaining!!

[@K21Academy]

Glad you like it !

[@MrSuriyam]

Thank you for the awesome training sir.

[@K21Academy]

Glad you liked it! 😊 Please do let us know what videos you'll like to see next?

[@11SAGARSHINDE]

This is very much usefull...Thanks..!!

[@K21Academy]

Hey, thanks for watching. Do let us know what videos you'd like to see next?

[@SaifulIslam-yx1xl]

One of the best videos. Thanks you sir for knowledge sharing

[@K21Academy]

You are most welcome

[@SandeepSaini-mt3yl]

Very interested & very important

[@K21Academy]

Glad you think so!

[@Ca-happy]

Thank you

[@bilalmazhar100]

best video on Tshoot

[@K21Academy]

Thanks for your kind words. This keeps us motivated. Do let us know what videos you'd like to see next?

[@nirmalanirmala-vn5wo]

Thanks😊

[@K21Academy]

Welcome 😊

[@aditigupta1150]

At 34:00 duration, just need one clarification. While editing command 'echo' under demo pod . Can we just run command kubectl replace --force -f (temporary file generated.yaml) ------------as its not allowing us to edit the original demo pod YAML file. Is this fine from exam point of view as here i am forcefully deleting existing pod and replacing the same with new one ? Kindly confirm.

[@K21Academy]

Yes, you can do that as well.

[@aditigupta1150]

At 17.00 duration, why you perform the steps to move apiserver.yaml file . I think you can skip this step because as far as i know if we modify/update anything under kube-apiserver.yaml file then kubeadm tool will automatically restart kube-apiserver static pod. Sorry, you can correct me in case if I am wrong.

[@K21Academy]

Hi! Actually we are moving the file out of the location where kubelet will look and it won't find it there then once the file is available then it will restart the pod. This is just one way of restarting the static pods. .. Yes you are correct we have other ways too as the video explains. Thank you

[@user-gf1ym5cu5c]

if in event is not showing what to do

[@K21Academy]

If pod events are not displaying in Kubernetes, several factors could be at play. Insufficient permissions, cluster issues, event retention policies, misconfigured logging or monitoring setups, or API server problems might be causing this. To troubleshoot, ensure proper permissions, check the cluster's health, review logging configurations, and verify the event retention policy.

[@khalilaliouich8246]

Hey, thanks for this video, how can be present during those live video.

[@K21Academy]

Hi there, you can join our live batches for [CKA] Docker & Certified Kubernetes Administrator and ask questions during the live sessions. If you're interested, here's the link for the same: k21academy.com/kubernetes

[@user-qv8nl8zb7c]

Can u guide me on the error that kubelet is activating......... Please guide sir

[@K21Academy]

Please Verify the kubelet configuration files (kubelet.conf or /etc/kubernetes/kubelet) to ensure they are correctly set up. Common configuration issues include incorrect API server endpoints, certificates, or improper flags. And try restarting kublet

[@user-qv8nl8zb7c]

why suddenly error came like did u specify right host or port came in between .... suddenly api-server stop working in between ................. its fluctuating like situation came in between please guide in this sir.......................... cant get any proper solution over the internet

[@K21Academy]

To start using the cluster set the environment variable $ cp /etc/kubernetes/admin.conf $HOME/ $ chown $(id -u) $HOME/admin.conf $ export KUBECONFIG=$HOME/admin.conf $ echo 'export KUBECONFIG=$HOME/admin.conf' >> $HOME/.bashrc try this if does not work then try kubeadm reset.