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Automate Drive Provisioning With a Shell Script
Turn the manual storage provisioning workflow into an automation script: partition, format, mount, and persist a blank drive with a single non-interactive script.
Challenges
Focused, hands-on problems for sharpening your DevOps and server-side skills. Some teach specific concepts while others mirror real-world scenarios. Every challenge includes hints, feedback, and automated solution checks.
Official Collection
Challenges crafted by iximiuz Labs to help you master DevOps and Server Side topics.
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Inspect Network Interfaces, IP Addresses, and Routes on a Linux Host
Practice reading the network configuration of Linux hosts: find interface names, IP and MAC addresses, the default gateway, and detect which routes a server uses to reach different destinations.
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Debug a Go Container Image That Fails to Start After a Recent Change
A Go service that has always been shipped as a static binary in a scratch-y image suddenly fails to start in a container, while the local build works as before. Find what recent changes caused it and fix the image without reverting them.
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Access a Private Kubernetes API Server Through an SSH SOCKS Proxy
The production Kubernetes cluster lives inside a private VPC, and its API server has no public endpoint. Turn an SSH connection to the bastion host into a SOCKS proxy and teach kubectl to use it, so the cluster becomes manageable from your workstation.
Independent Authors
Challenges from outstanding independent authors proudly hosted by iximiuz Labs.
Challenge on
Kube Mysteries: The Invisible Pod
Did you know that pods can become invisible? Can you figure out how?
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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.
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Dagger: Working with Secrets
Get hands-on with reading secrets from different providers and using them in your Dagger pipelines.
Community Collection
See all →Challenges contributed by the community members sharing their knowledge and expertise.
Challenge on
Debug a Pod Stuck at 0/1 Ready Due to a Readiness Probe
by Omkar Shelke
A new intern learning about probes wrote a small Pod manifest. The exec command and the application are both correct, but the Pod never becomes Ready because one probe parameter is missing. Find it and add it.
Challenge on
CKA Practice: Recover a NotReady Node After a Kubelet Configuration Error
A worker node dropped to NotReady and part of the workload went with it. The container runtime is fine and the control plane is healthy; the trail leads from kubectl symptoms down into systemd and the kubelet configuration. Diagnose the node and bring it back.
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Kubernetes - Multi-Container Pod Design Patterns
Build five ways to combine containers in one Pod: a sidecar that extends the app, an init container that finishes before the app starts, a native sidecar with a startup guarantee, an ambassador that mutates an outbound call, and an adapter that translates an inbound one.
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Run a Glibc-incompatible Binary Using chroot
by Başar Subaşı
Export an Alpine container rootfs using crane, set up a chroot environment, and execute a musl-linked binary that fails to run on the host system.