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.

Find challenges matching your interests...

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, Medium, on Kubernetes, Containers, Networking

What Port Does This Kubernetes Pod Listen On?

by Ivan Velichko

Be a networking Sherlock Holmes - find out which port a Kubernetes app uses and send a request to it.

#debugging #slim-image #distroless #socket #ss

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

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

Challenge, Medium, on Kubernetes, Containers

Send a Signal to a Kubernetes App: a Slim Container Case

by Ivan Velichko

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

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