Challenge on ,
Troubleshoot an Ingress That Returns 404 Not Found
by Omkar Shelke
An nginx Deployment runs fine, but its address returns an error. Trace the path from the Ingress to the Pod and fix the manifests.
Challenges
Focused, hands-on DevOps and server-side problems with hints, feedback, and automated solution checks.
Community Collection
Challenges contributed by the community members sharing their knowledge and expertise.
Challenge on ,
Extend the Cluster with an Additional Service CIDR for the dev Team
by Omkar Shelke
Add a new, separate Service CIDR range for the dev team using the ServiceCIDR API object — without touching or restarting the cluster's default Service CIDR — then create a Service with an explicit ClusterIP inside that new range and verify DNS resolution.
Challenge on ,
Pin a Client to the Same Pod Using Service Session Affinity
by Omkar Shelke
Configure a Kubernetes Service so that requests from the same client IP are always routed to the same backend Pod for a sustained period, using ClientIP-based session affinity.
Challenge on ,
Resolve a Container Port Conflict and Expose Multiple Ports Through a Single Service
by Omkar Shelke
A Deployment with two nginx containers has a port conflict — both containers use port 80. Fix the conflict by updating the ConfigMap, mounting it into the second container, updating the containerPort, and exposing both containers via a NodePort Service.