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

Multi-Container Pod Security Design

by Omkar Shelke

Create a multi-container Pod with different user IDs per container while sharing a common group ID at the Pod level for collaborative file access.

#kubernetes-101 #security-context #ckad #multi-container #cka

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

Inject an Ephemeral Container into a Distroless Pod and Test Cross-Namespace HTTP

by Omkar Shelke

A distroless pod running in the cherry namespace has no shell or debugging tools. Use kubectl debug to attach an ephemeral container, test connectivity to the request-logger service, and verify the request was received in its logs.

#cka #ckad #service #ephemeral-containers #distroless

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 ContainerCreating Issue Caused by Missing ConfigMap

by Omkar Shelke

A Deployment is stuck with Pods in ContainerCreating state because the required ConfigMap was not created. Fix the issue to make the application accessible.

#ckad #cka #troubleshooting #configmap #debugging

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

Run a Short Task as a Standalone Pod Without a Job Controller

by Omkar Shelke

Create a Pod in the processing namespace that runs a short task and exits successfully, reaching a Completed status without using a Job controller.

#cka #ckad #pods #kubernetes-101 #restart-policy

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: 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, Easy, on Kubernetes

Create and Apply a Kubernetes Job with Completions and Parallelism

by Omkar Shelke

Create a Kubernetes Job template for Team Aurora that runs a busybox command across multiple completions in parallel, with specific pod labels and container configuration.

#ckad #cka #jobs #kubernetes-101