Execute Host Commands Inside a Running Container
Leverage your knowledge of Linux namespaces to reach an application's internal debug interface without installing anything into the container.
Submissions: 332/761
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.
Run a Sidecar Container in the Namespace of Another Container
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.
Submissions: 151/293
Challenge, Medium, on
Docker 101: Create, Start, Pause, Unpause, Stop, Restart, Kill, and Remove a Container
Explore the key container management operations by walking through all the phases of the container lifecycle - from creation to termination and removal.
Submissions: 212/436
Free Up Disk Space by Removing Unused Docker Volumes
Your Docker host has been in use for a while. Anonymous and named volumes piled up, disk space is tight, and it's time to clean stuff up.
Submissions: 126/353
Community Collection
Challenges contributed by the community members sharing their knowledge and expertise.
AWK Mastery: From Zero to Hero
3-phase AWK challenge on realistic data in /home/laborant/awk_challenge/. Fundamentals: columns, delimiters, formatting. Logic & regex: filters, anchors, conditions, math. Sysadmin: logs, CSVs, metrics, counts, reports. Data lives under /home/laborant/awk_challenge/ (logs/access, data/hr, sys/metrics) and outputs are written to /home/laborant/ files.
Submissions: 4/13