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.

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Community Collection

Challenges contributed by the community members sharing their knowledge and expertise.

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge, Easy, on Kubernetes

Kubernetes Pod Scheduling: nodeSelector and Node Affinity

by Kaloyan Preslavski

Start with nodeSelector for simple node targeting, then upgrade to node affinity for expressive matching that nodeSelector cannot handle.

node-selector node-affinity scheduling ckad

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge, Medium, on Kubernetes, Security

Schedule a Maintenance Pod with Host Namespace Access Using Taints, Tolerations, and NodeSelector

by Omkar Shelke

Learn how to taint a node, schedule a Pod using nodeSelector and tolerations, and share the host network, PID, and IPC namespaces with the Pod.

cka cks scheduling taints tolerations

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge, Medium, on Kubernetes

Kubernetes Pod Scheduling: LimitRange and ResourceQuota

by Kaloyan Preslavski

Use LimitRange to set per-pod resource defaults and ResourceQuota to cap total namespace consumption.

limitrange resourcequota resource-management scheduling ckad

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge, Easy, on Kubernetes

Kubernetes Pod Scheduling: Quality of Service Classes

by Kaloyan Preslavski

See how Kubernetes determines BestEffort, Burstable, and Guaranteed classes from resource configuration - and which pods get evicted first under pressure.

qos resource-requests scheduling ckad

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