Challenges 🏆

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.

Pro Tip: Use filters by category, difficulty, and tags to find challenges that match your proficiency level and interests, or explore our Skill Paths for a more guided learning experience.

Challenge, Hard, on Kubernetes, Containers, Linux

Make a Kubernetes Pod Survive an OOM Event Without Restarting

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

#pod-resources #cgroups #oom

Challenge, Easy, on Kubernetes, Containers

Deploy a Resource-Greedy Pod Without Breaking the Kubernetes Cluster

Prove your SRE skills - deploy a resource-greedy application to a Kubernetes cluster and make it run for a while without disrupting the service.

#kubernetes-101 #pod-resources #cgroups

Challenge, Medium, on Containers, Linux

Make the Container Exit When One of Its Processes Runs Out of Memory

Learn how to fine-tune the container's cgroup to make the container exit when one of its processes runs out of memory.

#docker #cgroups #systemd

Challenge, Medium, on Linux

Terminate the Entire Process Group When One Process Runs Out of Memory

Learn how to set up a cgroup v2 to make the OOM killer terminate the entire process group when one process goes out-of-memory.

#cgroups #oom