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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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

Diagnose Why a DaemonSet Skips the Control Plane Node

by Omkar Shelke

Troubleshoot and update a Kubernetes DaemonSet so that its Pods run on all nodes in the cluster, including the control plane.

daemonset scheduling cka debugging 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: 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, 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

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