Challenges | iximiuz Labs

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

Reach a Distroless Container's Debug Endpoint From a Sidecar Container

A distroless container serves a debug interface on its own loopback address. Can you reach this debug endpoint using nothing but standard Docker commands?

#docker #namespaces #container-networking #debugging #distroless

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

Challenge on Kubernetes

Inject a Config File Without Overwriting the Image's Existing Directory

by Omkar Shelke

A webapp deployment in the prod namespace is stuck in CrashLoopBackOff. The application's startup probe checks that its existing config directory is intact before the container is marked healthy. Fix the deployment so configuration is injected correctly and the pod reaches Running state with its health check endpoint responding on port 8080.

#ckad #cka #configmap #probes #debugging

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

Challenge on Kubernetes

Diagnose Why a DaemonSet Skips the Control Plane Node

by Omkar Shelke

Troubleshoot and update a Kubernetes DaemonSet so that its Pods run on all nodes in the cluster, including the control plane.

#daemonset #scheduling #cka #debugging #tolerations

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

Challenge on Containers, Linux

Execute Host Commands Inside a Running Container

by Ivan Velichko

Leverage your knowledge of Linux namespaces to reach an application's internal debug interface without installing anything into the container.

#namespaces #docker #debugging #distroless #nsenter

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

Challenge on Containers, Linux

Run a Sidecar Container in the Namespace of Another Container

by Ivan Velichko

Learn how to run multiple Docker containers sharing the same PID, IPC, and network namespaces - a foundation of many advanced container use cases, including Kubernetes Pods construction and container debugging tools.

#docker #container-runtime #namespaces #debugging

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

Challenge on Containers

Docker 101: Execute Commands in a Running Container

by Ivan Velichko

Learn how to execute commands inside running containers using 'docker exec' - a crucial skill for debugging containerized applications and exploring container environments.

#docker #containers-101 #container-runtime #debugging

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

Challenge on Containers, Linux

Ensure a Graceful Termination for a Container With an Entrypoint Script

by Ivan Velichko

Can you make a container exit gracefully after the 'docker stop' command while preserving its extensible entrypoint mechanism?

#docker #container-image #debugging #os-signal #go

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

Challenge on Containers

When a FROM scratch Container Image Is Not Good Enough

by Ivan Velichko

Learn on practice the limitations of FROM scratch images and the ways to mitigate them.

#docker #container-image #debugging #slim-image #distroless