Kube Mysteries: The Invisible Pod
Did you know that pods can become invisible? Can you figure out how?
Focused hands-on problems designed to help you hone your DevOps or Server Side skills. Some challenges are more educational, while others are based on real-world scenarios. The platform provides hints and feedback for each challenge, including automated solution checks.
Did you know that pods can become invisible? Can you figure out how?
Practice configuring Kubernetes to pull images from a private registry and run Pods with authenticated registry access.
Practice the fundamental lifecycle of a Kubernetes Pod: creation, inspection (IP, node), interaction (executing commands, checking logs), and deletion.
This exercise tests your ability to safely upgrade a multi-node Kubernetes cluster from version 1.30 to 1.31 following the standard upgrade procedure.
This challenge focuses on debugging memory usage issues in a Go application deployed in a Kubernetes cluster. The goal is to ensure the application can handle moderate traffic without crashing, even when it runs with significantly constrained memory resources.
This exercise tests your ability to configure kubernetes network policies to make sure only pods with specific labels can communicate with each other.
Hack your way through this challenge making the OOM kills invisible again.
Prove your SRE skills - deploy a resource-greedy application to a Kubernetes cluster and make it run for a while without disrupting the service.
An ultimate Kubernetes debugging challenge: can you copy files to/from a running Pod that doesn't have a shell or other command line tools installed?
Practice copying files to/from running Kubernetes Pods to become a Kubernetes troubleshooting ninja.