Challenges | iximiuz Labs

Find challenges matching your interests...

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

Independent Authors

Challenges from outstanding independent authors proudly hosted by iximiuz Labs.

This challenge was carefully crafted by an independent author and proudly hosted by iximiuz Labs.

Challenge, Hard, on Kubernetes

Kube Mysteries: The Invisible Pod

by Márk Sági-Kazár

Did you know that pods can become invisible? Can you figure out how?

kubelet pod

Community Collection

Challenges contributed by the community members sharing their knowledge and expertise.

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge, Hard, on Kubernetes

Troubleshoot a Website That Is Not Accessible

by Omkar Shelke

A web application is deployed but the website is not accessible. Investigate and fix the issue.

ckad cka troubleshooting service debugging

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge, Hard, on Kubernetes

Klustered: Level Three

by Rawkode Academy

Make sure the Klustered deployment is running and that you can browse to it and see the counter increase with each refresh.

klustered

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge, Hard, on Kubernetes, Security

Disable API Server NodePort and Configure kube-scheduler Resource Requests

by Omkar Shelke

Configure the kube-scheduler static pod with CPU resource requests based on node allocatable, and disable the NodePort access to the Kubernetes API server so it is only reachable via ClusterIP.

cks cka kube-scheduler api-server

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge, Hard, on Kubernetes, Containers

Kubernetes - Build and Deploy a Production-Ready Container Image

by Kaloyan Preslavski

Combine multi-stage builds, build-time arguments, non-root users, and Pod security context into a single production-grade image pipeline.

dockerfile ckad