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.

Find challenges matching your interests...

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

Kubernetes Pod Scheduling: Taints, Tolerations and Node Affinity - Why You May Need Both

by Kaloyan Preslavski

See why taints and tolerations alone or node affinity alone are not enough to fully control pod placement on dedicated nodes.

taints tolerations 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

Schedule Pods Using Taints, Tolerations and Node Affinity

by Omkar Shelke

A Kubernetes cluster has tainted nodes to restrict pod scheduling. Configure a Deployment to schedule pods exclusively on a specific tainted node using both tolerations and required node affinity.

cka taints tolerations node-affinity scheduling

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

Bind a PersistentVolume to a Specific Node Using Node Affinity

by Omkar Shelke

Create a PersistentVolume backed by local storage that can be used only on a specific node, and bind it to a PersistentVolumeClaim using label selectors.

cka persistentvolume node-affinity pvc