DevOps

As I continue my prep for the Certified Kubernetes Administrator (CKA) exam, I’ve been diving into the Kubernetes scheduler so I can get a better understanding of how it works, how it can be influenced, and what tools are available to debug scheduling-related issues. This is a continuation of my previous notes about kubectl basics and focuses on practical commands and concepts I found useful when learning about scheduling. What the Scheduler Does TLDR - the Kubernetes scheduler is responsible for deciding which node a pod should run on. Once a pod is created without a node assignment, the scheduler steps in and tries to find the most suitable node for it, based on resource availability, constraints, taints, and other factors. ...

I’ve recently started studying for the Certified Kubernetes Administrator (CKA) exam and as such I’m capturing some of my study notes here. When you’re first diving into Kubernetes, the command-line tool kubectl becomes your new best friend. But like any new tool, remembering the right commands can be challengins, especially when you’re trying to troubleshoot or quickly inspect your cluster. This is my own quick-reference guide for working with kubectl, with just enough commentary to help it stick. If you’re interested in learning more I would recommend visiting the Official Kubernetes Documentation site, which covers everything you need. ...