Write a TCP Client for a Telemetry Server
Write your first TCP client for a push-only telemetry server that starts sending sensor readings as soon as you connect. Likely the easiest way to get started with TCP socket programming.
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
List All Tags in a Container Repository
Practice discovering what has been published to a remote container repository by listing its tags using crane, regctl, or a direct call to the registry HTTP API.
Submissions: 50/71
Challenge, Easy, on
Docker 101: Authenticate to Private Container Registries
Practice using docker login to authenticate against multiple private container registries with different credentials, then pull and push images across them.
Submissions: 76/83
Mount Static Assets from an OCI Image into a Kubernetes Pod
Use Kubernetes image volumes to mount a static HTML artifact into an nginx Pod without an init container or a custom nginx image.
Submissions: 107/178
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: 131/407
Dagger: Working with Secrets
Get hands-on with reading secrets from different providers and using them in your Dagger pipelines.
Submissions: 6/32
Challenge, Easy, on
Dagger: Module Dependencies
Learn how to install, update and uninstall Dagger module dependencies.
Submissions: 3/8
Community Collection
Challenges contributed by the community members sharing their knowledge and expertise.
Challenge, Easy, on
Perform In-Place Updates on a Kubernetes Deployment
by Omkar Shelke
Update container images, container names, update strategy, and replica count in an existing multi-container Kubernetes Deployment.
Submissions: 29/48
Challenge, Easy, on
Create and Apply a Kubernetes Job with Completions and Parallelism
by Omkar Shelke
Create a Kubernetes Job template for Team Aurora that runs a busybox command across multiple completions in parallel, with specific pod labels and container configuration.
Submissions: 26/32
Verify Kernel Isolation Between Kata Containers and runc Using RuntimeClass
by Omkar Shelke
Prove that Kata Containers Pods run inside a dedicated VM with a separate guest kernel, completely isolated from the host kernel, by comparing kernel versions across runc and Kata runtimes.
Submissions: 14/20
Challenge, Easy, on
Switch Live Traffic from Blue to Green Using Kubernetes Services
by Omkar Shelke
Perform a blue-green deployment by creating a new green version of a web application, then switch live traffic from blue to green with zero downtime by updating the Service selector.
Submissions: 18/24