Challenges | iximiuz Labs

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

Challenge, Easy, on Kubernetes, Security

Enforce TLSv1.3-Only Policy on a Production NGINX Deployment

by Omkar Shelke

Update a production NGINX ConfigMap to restrict TLS to v1.3 only, then verify the change enforces the security policy.

cka ckad tls configmap deployment

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

Challenge, Easy, on Kubernetes

Configure a Memory-Backed emptyDir Volume with a Size Limit

by Omkar Shelke

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.

ckad cka volumes emptydir deployment

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

Challenge, Easy, on Kubernetes

Resolve OOMKilled Errors by Reading VPA Memory Recommendations

by Omkar Shelke

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.

cka vpa resources oomkilled deployment

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

Challenge, Easy, on Kubernetes

Perform In-Place Updates on a Kubernetes Deployment

by Omkar Shelke

Update container images, container names, update strategy, and replica count in an existing multi-container Kubernetes Deployment.

kubernetes-101 deployment ckad multi-container

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

Challenge, Easy, on Kubernetes

Kubernetes Workloads: ReplicaSets and Deployments

by Kaloyan Preslavski

Build a ReplicaSet by hand, observe self-healing, then update its template and end up with Pods running different images. Layer a Deployment on top and confirm the full ownership chain.

workloads ckad deployment replicaset ownerreferences

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

Challenge, Easy, on Kubernetes

Use kubectl-convert to Fix Deprecated APIs in a Kubernetes Manifest

by Omkar Shelke

Identify and fix deprecated API versions in a Kubernetes manifest using the kubectl-convert plugin, then deploy the updated manifest.

cka ckad kubectl api-deprecation deployment

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

Challenge, Easy, on Kubernetes

Manually Schedule Deployment Pods on a Specific Node

by Omkar Shelke

Create a Deployment with specific scheduling, labels, and port configuration, then expose it externally using a NodePort Service.

cka ckad deployment service scheduling

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

Challenge, Easy, on Kubernetes

Rolling Update and Rollback a Deployment

by Omkar Shelke

Update a Deployment with a new image using a rolling update strategy, then roll back to the previous revision and verify the rollout history.

ckad deployment rolling-update rollback

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

Challenge, Easy, on Kubernetes

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, Easy, on Kubernetes

Provision and configure a PersistentVolume (PV) and PersistentVolumeClaim (PVC) for deployment.

by Omkar Shelke

Create a PersistentVolume with hostPath, bind it to a PersistentVolumeClaim, and mount it in a Deployment. This demonstrates storage management in Kubernetes.

ckad persistentvolume pvc volumes deployment