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.

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Community Collection

Challenges contributed by the community members sharing their knowledge and expertise.

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge on Kubernetes·Easy

Kubernetes Workloads: Pods

by Kaloyan Preslavski

Build a Pod from scratch, exec into it, try to edit an immutable field, explore all three restart policies, and observe graceful termination.

#pod #workloads #ckad

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge on Kubernetes, Containers·Easy

Customize nginx Startup Behavior with a postStart Lifecycle Hook

by Omkar Shelke

Create a Pod that uses a postStart lifecycle hook to write a custom message to the nginx welcome page, expose it via a NodePort Service, and verify the hook ran successfully.

#ckad #cka #pod #lifecycle-hooks

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge on Kubernetes·Easy

Copy a File into a Running Pod to Serve a Custom NGINX Page

by Omkar Shelke

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.

#ckad #cka #kubectl #pod

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge on Kubernetes·Medium

Debug Why a ConfigMap Could Not Be Created

by Omkar Shelke

A Pod is failing in the japan namespace. Investigate the issue, identify the root cause, and fix it to get the Pod running.

#cka #ckad #configmap #pod #troubleshooting

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge on Kubernetes·Easy

Disable ServiceAccount Token Automounting in a Pod

by Omkar Shelke

Create a Pod that does not mount the default ServiceAccount token, preventing it from accessing the Kubernetes API server.

#cka #ckad #serviceaccount #pod

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge on Kubernetes·Easy

Enforce Resource Policies Using LimitRange

by Omkar Shelke

Create a LimitRange in a namespace to enforce minimum, maximum, and default resource constraints for containers, then deploy a compliant Pod.

#cka #ckad #limitrange #resources #pod

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge on Kubernetes·Easy

Manage Static Pod Lifecycle on a Cluster Node

by Omkar Shelke

Create a static pod named mcp-grafana on node-01 and delete an existing pod from the cluster.

#static-pod #cka #pod #kubelet

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge on Kubernetes·Easy

Grant a ServiceAccount Access to a Specific Secret Using RBAC

by Omkar Shelke

Create a ServiceAccount with permissions to access only that specific Secret using RBAC resourceNames restriction.

#cka #ckad #rbac #serviceaccount #pod

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge on Kubernetes·Easy

Convert Pod to Deployment with Secret Management

by Omkar Shelke

Convert an existing Pod manifest into a Deployment and move the hardcoded environment variables into a Kubernetes Secret.

#ckad #deployment #secret #pod #configuration

This challenge was created by a community author. Community content is reviewed by the iximiuz Labs team on a best effort basis.

Challenge on Kubernetes·Medium

Kubernetes QoS Classes and Resource Management

by Omkar Shelke

Understand and implement Kubernetes Quality of Service (QoS) classes. Create Deployments and Pods with different QoS classes and identify eviction priority during resource pressure.

#cka #qos #resources #deployment #pod