Challenges

Focused, hands-on problems for sharpening your DevOps and server-side skills. Some teach specific concepts while others mirror real-world scenarios. Every challenge includes hints, feedback, and automated solution checks.

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Official Collection

Challenges crafted by iximiuz Labs to help you master DevOps and Server Side topics.

This challenge was prepared for you by the iximiuz Labs team.

Challenge, Hard, on Kubernetes, Containers, Linux

Make a Kubernetes Pod Survive an OOM Event Without Restarting

by Ivan Velichko

Hack your way through this challenge making the OOM kills invisible again.

#pod-resources #cgroups #oom

This challenge was prepared for you by the iximiuz Labs team.

Challenge, Hard, on Containers, Kubernetes

Copy Files To/From a Running Kubernetes Pod: a Distroless Image Case

by Ivan Velichko

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?

#kubectl #distroless #debugging

This challenge was prepared for you by the iximiuz Labs team.

Challenge, Hard, on Containers, Kubernetes

Edit a File in a Running Kubernetes Pod: a Tricky Case

by Ivan Velichko

Can you edit a file in a running Kubernetes pod? What if there is no shell inside and the container's user lacks the write permission?

#debugging #slim-image #distroless #kubectl

This challenge was prepared for you by the iximiuz Labs team.

Challenge, Hard, on Kubernetes, Containers

Send a Signal to a Kubernetes App: a Non-Root Container Case

by Ivan Velichko

Learn how to send a signal to a Kubernetes app running in an unprivileged container without shell.

#ephemeral-container #debugging #slim-image #distroless