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.

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

Challenge, Easy, on Containers, Programming

Write a Dockerfile That Excludes Dev Dependencies from the Production Image

by Ivan Velichko

Learn how to keep your container images lean by excluding development dependencies (linters, test frameworks, etc.) from the production build.

docker container-image containers-101 dockerfile node.js

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

Challenge, Easy, on Containers, Programming

Write a Dockerfile for an Application With System-Level Dependencies

by Ivan Velichko

Practice installing OS-level packages during a Docker image build to satisfy system library requirements of your application.

docker container-image containers-101 dockerfile python

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

Challenge, Easy, on Containers, Programming

Write Your First Dockerfile

by Ivan Velichko

Learn the absolute basics of Dockerfile authoring by containerizing a simplistic Node.js server application with just three instructions: FROM, COPY, and CMD.

docker container-image containers-101 dockerfile node.js

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

Challenge, Easy, on Kubernetes

Expose Observability Stack (Prometheus and Grafana) Using Traefik

by Omkar Shelke

Helm has installed Prometheus and Grafana in a Kubernetes cluster. Create an Ingress resource to expose both services using different hostnames with Traefik ingress controller.

ckad ingress prometheus grafana traefik

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

Challenge, Easy, on Containers, Programming

Write a Dockerfile for a Simple Web Server Application

by Ivan Velichko

Learn how to write a Dockerfile from scratch and build a working container image for a web server application with a simple set of dependencies.

docker container-image containers-101 dockerfile node.js

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

Challenge, Easy, on Linux

Install Linux Packages from Remote Repositories (Debian & Ubuntu Edition)

by Ivan Velichko

Practice one of the key Linux skills - installing packages from remote repositories.

os-packages apt dpkg debian ubuntu

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

Challenge, Easy, on Linux

Install Linux Packages from Remote Repositories (Fedora & RHEL Edition)

by Ivan Velichko

Practice one of the key Linux skills - installing packages from remote repositories.

os-packages dnf rpm fedora rhel

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

Challenge, Easy, on Linux

Archive and Extract Files and Directories with tar

by Ivan Velichko

Practice basic tar operations: extract an archive, create a compressed backup, and install software from a release tarball using the 'tar' command.

tar

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

Challenge, Easy, on Kubernetes

Mount ConfigMap and Secret Using a Single Volume

by Omkar Shelke

Mount configuration and secrets into a single directory path using advanced Kubernetes volume techniques.

ckad configmap secret volumes

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

Challenge, Easy, on Containers

Gracefully Stop a Container With a Lengthy Shutdown Sequence

by Ivan Velichko

Learn how to properly stop a Docker container whose application needs more than the default 10 seconds to shut down gracefully.

docker container-runtime os-signal debugging