Challenge, Medium, on
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.
Submissions: 46/55
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.
Community Collection
Challenges contributed by the community members sharing their knowledge and expertise.
Challenge, Medium, on
Kubernetes Pod Scheduling: Taints, Tolerations and Node Affinity - Why You May Need Both
See why taints and tolerations alone or node affinity alone are not enough to fully control pod placement on dedicated nodes.
Submissions: 21/29
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.
Submissions: 15/18
Challenge, Medium, on
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.
Submissions: 23/30