Production issue troubleshooting guides for Kubernetes, Docker, Linux, cloud, and DevOps environments with real error fixes.
Last Updated: February 2026 Landing a mid-level Kubernetes position in 2026 requires more than knowing the basics. Interviewers want to see how you troubleshoot real production issues, debug complex cluster problems, and think on your feet when services fail. After conducting dozens of Kubernetes interviews and analyzing current hiring trends, I’ve compiled the 25 most … Read more
Last Updated: January 2026 If you’ve worked with Kubernetes long enough, you know exactly the one I’m talking about.Last Tuesday, I spent nearly two hours staring at my terminal, absolutely convinced that kubectl was broken. Spoiler: it wasn’t. The real problem was Kubernetes RBAC, and more specifically, my misunderstanding of it. If this sounds familiar, … Read more
Last Updated: January 2026 It was 11 PM on a Thursday when I got the Slack notification Production pods failing. The error message? Simple and infuriating: The pod was running. The volume was mounted. Everything looked right. But the application couldn’t write to its own data directory. I spent three hours that night learning everything … Read more
Last Updated: January 10 2026 Introduction Kubernetes CSI driver errors are one of the most common reasons persistent storage suddenly stops working in production. When CSI breaks, pods get stuck in Pending or ContainerCreating, volumes fail to attach, and applications that rely on data simply do not start. I will never forget the first time … Read more
Last Updated: January 10 2026 It’s Tuesday morning. You just deployed your app to the production. The deployment shows success, but your pod has been stuck in “ContainerCreating” for more tha 10 minutes. You check the events and see: Warning FailedMount MountVolume.SetUp failed for volume “data”: permission denied Sound familiar? I’ve been there a lot … Read more
Last Updated: January 2026 In this blog article I am gonna share my experience with a live Kubernetes Certificate Expired issue which i faced in the production environment and what steps I took to fix it. So last Thursday started off pretty normal. Got my coffee, checked Slack, everything looked fine. Our production cluster was … Read more
You know what’s wild? I’ve been running Kubernetes clusters for almost three years now, and kubernetes service account tokens still manage to catch me off guard. Last week was a perfect example. Everything was humming along fine until around 2 PM when Jenkins started failing builds. Not just one or two – literally every pipeline … Read more
Last Updated: January 2026 When something breaks in Kubernetes, nobody has time to remember obscure kubectl flags. I learned that the hard way—usually in production, usually under pressure. The truth is, you don’t need to memorize every kubectl command. You need quick access to the ones that actually solve problems. This kubectl commands cheatsheet is … Read more
Last Updated: January 10 2026 You know that feeling when you deploy your application, everything looks perfect in the YAML, you hit apply, and then… your pod just sits there idle. Waiting. Forever. Usually around 4 PM on a Friday, right before a demo. The pod status with the “ContainerCreating” while my PersistentVolumeClaim stubbornly shows … Read more
Last Updated: Jan 10 2026 What is Kubernetes DNS? Kubernetes DNS is an internal Domain Name System that enables pod-to-pod and service-to-service communication within a cluster. Without properly functioning DNS, your microservices cannot discover or communicate with each other, even when all pods show “Running” status. In this article kubernetes dns issues i have tried … Read more