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.
Add a sidecar container to an existing Deployment that tails a shared log file written by the main application container. Use a shared volume to make the log file available to both containers.
Create a Pod with a main application container and a sidecar container that continuously streams shared logs. Kubernetes implements sidecar containers as a special case of init containers.
Use emptyDir volumes to share data between containers, understand the volume lifecycle across container restarts and pod deletion, and explore memory-backed ephemeral storage.
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.
Mount configuration and secrets into a single directory path using advanced Kubernetes volume techniques.
Harden a container by implementing a read-only root filesystem with specific writable volumes for nginx. This is a critical security practice to prevent runtime modifications.
Create a PersistentVolume with hostPath, bind it to a PersistentVolumeClaim, and mount it in a Deployment. This demonstrates storage management in Kubernetes.
