Write a Dockerfile for a Simple Web Server Application
Learn how to write a Dockerfile from scratch and build a working container image for a simple web server application.
Submissions: 48/79
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.
Official Collection
Challenges crafted by iximiuz Labs to help you master DevOps and Server Side topics.
Challenge, Easy, on
Install Linux Packages from Remote Repositories (Debian & Ubuntu Edition)
Practice one of the key Linux skills - installing packages from remote repositories.
Submissions: 59/77
Challenge, Easy, on
Install Linux Packages from Remote Repositories (Fedora & RHEL Edition)
Practice one of the key Linux skills - installing packages from remote repositories.
Submissions: 24/29
Challenge, Easy, on
Archive and Extract Files and Directories with tar
Practice basic tar operations: extract an archive, create a compressed backup, and install software from a release tarball using the 'tar' command.
Submissions: 32/42
Independent Authors
Challenges from outstanding independent authors proudly hosted by iximiuz Labs.
Challenge, Hard, on
Kube Mysteries: The Invisible Pod
Did you know that pods can become invisible? Can you figure out how?
eBPF Challenge for Beginners
In this challenge, you’ll debug and fix a deliberately “broken” eBPF program, then prove it’s running by identifying its program and map IDs. Along the way, you’ll explore bpftool, check which helpers are supported, and dig into details like the UID of the loader. Finally, you’ll test your knowledge of eBPF maps by recalling the flag that only inserts a key if it doesn’t already exist.
Submissions: 65/207
Dagger: Working with Secrets
Get hands-on with reading secrets from different providers and using them in your Dagger pipelines.
Submissions: 3/21
Challenge, Easy, on
Dagger: Module Dependencies
Learn how to install, update and uninstall Dagger module dependencies.
Submissions: 3/6
Community Collection
Challenges contributed by the community members sharing their knowledge and expertise.
Challenge, Easy, on
Pod, Service, and Cross-Namespace DNS Resolution
by Omkar Shelke
Create a Pod with ConfigMap volume mount, expose it via ClusterIP Service, and test connectivity from another namespace. This combines multiple Kubernetes concepts.
Challenge, Easy, on
The SED command : Survival Guide - What You Must Know
Master **sed**, the essential stream editor for Linux SysAdmins. Progress through 10 tasks: simple & global substitution, regex patterns, line ranges, deletion, insertion, ... Work with realistic Rocky Linux system files in /home/laborant/sed_challenge/.
Submissions: 21/43
Challenge, Easy, on
Kubernetes Pod Lifecycle Fundamentals
by Adithya G
Practice the fundamental lifecycle of a Kubernetes Pod: creation, inspection (IP, node), interaction (executing commands, checking logs), and deletion.
Submissions: 66/217
Challenge, Easy, on
CKA Practice: Upgrade Multi-Node Kubernetes Cluster
by Adam Leskis
This exercise tests your ability to safely upgrade a multi-node Kubernetes cluster from version 1.30 to 1.31 following the standard upgrade procedure.
Submissions: 34/117