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.
Challenges contributed by the community members sharing their knowledge and expertise.
A Deployment is using a disk-backed emptyDir volume. Convert it to a memory-backed tmpfs volume for better performance — but make sure to set a size limit to prevent the Pod from exhausting the node's RAM.
A Pod is running nginx and exposed via NodePort. Copy a local HTML file into the running Pod so NGINX serves it as the default homepage using only imperative commands.
A Service exists in a namespace. Use a temporary Pod to resolve DNS, save the output, and confirm the Pod is automatically removed after the tasks complete.
Troubleshoot a Deployment where containers are repeatedly OOMKilled. Inspect Vertical Pod Autoscaler (VPA) recommendations and manually apply the recommended memory request and memory limit to stabilize the workload.
Create a Pod that does not mount the default ServiceAccount token, preventing it from accessing the Kubernetes API server.
Create a LimitRange in a namespace to enforce minimum, maximum, and default resource constraints for containers, then deploy a compliant Pod.
Identify and fix deprecated API versions in a Kubernetes manifest using the kubectl-convert plugin, then deploy the updated manifest.
Create a Deployment with specific scheduling, labels, and port configuration, then expose it externally using a NodePort Service.
Update a Deployment with a new image using a rolling update strategy, then roll back to the previous revision and verify the rollout history.
Understand ResourceQuota limits and create a Pod with Guaranteed QoS class that uses half of the namespace's allocated resources.