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Explain Kubernetes Real Time Challenges like this in your next Interview | 3 Production Scenarios



Support my work In this video we will learn 3 most common real time production level …



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47 Comments

  1. Accenture is sponsoring RHCSA and RHCE course and certification. Should I consider doing this?? Is is worth it??
    I was about to start your course but they want me to complete these two certifications on priority. Is it really worth doing these?

    Please reply you're my last hope 😅

  2. How do I troubleshoot ''The connection to the server IPaddress:6443 was refused – did you specify the right host or port?'' error on my Kubernetes cluster? Sometimes it connects fine but most of the time it displays this error message. Can you please do a video about this error?

  3. I have faced the same questions in an recent interview . Thanks Abhishek for the clear lecture on Performance Benchmarking ,Blast Radius , Resource quotas.

    Please put videos on how to achieve High Availability/ Disaster Recovery setup/Cluster Upgrade on both Self Managed K8S and Cloud K8S on Production grade applications.

  4. Hi Abhishek sir good morning iam from non b tech back ground i follow your videos can I step into IT side
    ON DEVOPS many channels recommended your channel for DEVOPS I have seen your videos it's just superb is it complete course for DEVOPS training sir and upcoming next you will be top trainer sir thanku

  5. This is insightful Abhishek ! Just one question raised in my mind What will happen in the scenario of the Master Node Upgrades in H.A. What will the Application inside the Cluste Operate if the Main (Leader) Control Plane is down due to Upgrades ?

  6. Great video . I answered the same in one of my interviews for OOM killed issue but the interviewer came up with a cross question as if it is OOM KILLED issue then the JVM itself will be stuck, thread and head dumps will also be stuck, in that case how will you determine the rca for the same. Anyone with the answer for this?

  7. Have you experienced issues where nodes fail to join the cluster after an upgrade? The nodes are visible in the cluster configuration, but in reality, they are not in the cluster, and there are many issues with the controller and API server. Additionally, the scheduler fails to schedule, rendering the cluster nearly unusable. Do you know how to fix these issues?

  8. Bro, I am also ur fallower, I am also going through ur videos, I saw many of them posting your comments like they got job in devops eventhough they have carrer gap, I almost trying for 8months still I can't get job in devops ,I didn't get a single call from recuiter 🥺, I don't know how others are getting jobs, i am so stressed and depressed nowadays bcoz I am the elder one in my family I need to full fill my responsiblities but I can't I feels like a complete looser, day by day I lost my hope in getting into devops field, I saw many post like we are helping hand to job seeker but that not true I have spoke with peolples and recruiters in linkedin but nthg changed, then only I came to know no one will help us especially in worst phases of lyf, reality hits me hard very harderrr😖

  9. Must read for knowledge. Please like it so I can know how many got real example with this.

    Abhishek, I have 5 years+ experience but heard of Resource Quota on NS first time. Thanks for sharing it.

    Let me explain my scenarios:
    1. OOMKilled: We usually had one application whose pods goes into OOMKilled status. We shared details with Developers. They said it is because of old java version. But they can't go to the newer version asap so they shared a command which has to run on pods to clean garbage memory. I created a shell script which looks into all pod of that service, if memory usage is more than threshold value in script then command will run into that pod and will check all pods of that service. This script ran via K8s Cronjobs. It drastically reduced OOMKilled errors.

    2. K8s Upgrade: When I first time upgraded k8s version on Dev cluster, cluster traffic was interrupted because k8s introduced major change in ingress controller for health path. Mistake I did was that I didn't go through release notes. I was the first one from offshore to do it in my team. Later it was fixed by help from Microsoft support as they identified the issue due to changes. I did it because there was no document like how to perform the release. I standardized the process of k8s upgrade by creating document which had all steps to upgrade prerequisite etc.

  10. awesome video bro !! much needed video to explain to the interviews plus it will make our life easier when we see similar issue in the working environment.
    Waiting for the video on upgrades the commonly asked question in ay interviews.😀

  11. I love it then Abhishek, I urge you to deploy a huge series of database applications using all the concepts taught like ansible, Jenkins, kubernetes in production using aws eks and map it to a certain custom domain step by step please. It gonna be helpful. I really appreciate your work❤

  12. Thanks Abhishek for this wonderful video, learned something new today.Looking forward for the detailed Kubernetes Upgrade Video. Your channel is indeed a gem wrt to learning devops.

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