Challenge, Easy, on
Troubleshoot an Image Conversion Daemon
An image conversion daemon was installed from a vendor package, but it fails to start. Diagnose why the binary cannot be loaded and fix the installation.
Submissions: 42/57
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
Troubleshoot a Log Shipping Daemon That Refuses to Start
A system daemon crashes on startup with a cryptic, non-actionable error message. Investigate the failure, identify its root cause, and get the service running.
Challenge, Easy, on
Create a systemd Service for a Long-Running Process
Turn a plain HTTP server binary into a proper systemd-managed service that starts on boot and is automatically restarted when it crashes.
Submissions: 78/115
Challenge, Easy, on
Run an ARM64 Binary on an AMD64 Machine Using QEMU Emulation
Learn how Linux's binfmt_misc mechanism and QEMU user-space emulation allow transparent execution of binaries compiled for foreign CPU architectures.
Submissions: 54/70
Independent Authors
Challenges from outstanding independent authors proudly hosted by iximiuz Labs.
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: 105/320
Community Collection
Challenges contributed by the community members sharing their knowledge and expertise.
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: 38/79