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, Medium, on Kubernetes

Take and Restore an etcd Snapshot on a Kubernetes Cluster

by Omkar Shelke

Learn how to take a snapshot backup of etcd and restore it to a specific directory — a critical skill for Kubernetes cluster disaster recovery.

cka etcd backup restore

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

Challenge, Medium, on Kubernetes

Place One Pod per Node Without Using a DaemonSet

by Omkar Shelke

Deploy a multi-container Kubernetes Deployment and ensure that no more than one Pod runs on the same worker node, without using a DaemonSet.

scheduling deployment cka 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, Medium, on Kubernetes

Diagnose Why a DaemonSet Skips the Control Plane Node

by Omkar Shelke

Troubleshoot and update a Kubernetes DaemonSet so that its Pods run on all nodes in the cluster, including the control plane.

daemonset scheduling cka debugging tolerations

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

Challenge, Medium, on Kubernetes

Why LimitRange Is Not Injecting Default Requests and Limits into Running Pods

by Omkar Shelke

A LimitRange exists in the namespace but Pods are not receiving default resource requests and limits. Investigate the root cause and fix it.

cka limitrange resources kube-apiserver

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

Challenge, Medium, on Kubernetes, Security

Troubleshoot CrashLoopBackOff Caused by a Missing TLS Secret

by Omkar Shelke

A deployment is failing because the application cannot load its TLS certificate. Create the missing secret and mount it into the deployment so the Flask app can serve TLS traffic.

cka cks tls secrets troubleshooting

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

Challenge, Medium, on Kubernetes

Add a Sidecar Log Tailer to an Existing Deployment

by Omkar Shelke

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.

ckad cka sidecar volumes pods

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

Challenge, Medium, on Kubernetes, Networking

Canary Deployment Using Kubernetes Gateway API Traffic Splitting

by Omkar Shelke

Implement a canary deployment strategy using the Kubernetes Gateway API. Route the majority of traffic to a stable version of a service while gradually shifting a small percentage to a new canary version.

cka gateway-api httproute canary

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

Challenge, Medium, on Kubernetes, Networking

Cross-Namespace Gateway and HTTPRoute Binding with Kubernetes Gateway API

by Omkar Shelke

Configure a Kubernetes Gateway API setup with the Gateway in a dedicated infrastructure namespace and HTTPRoute in the application namespace, using path-based routing to expose railway platform services.

cka gateway-api httproute nginx

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

Challenge, Medium, on Kubernetes

Validate CSI Storage Performance Using FIO and a Kubernetes Job

by Omkar Shelke

Create a PersistentVolumeClaim backed by a CSI StorageClass and run a storage performance benchmark using FIO inside a Kubernetes Job.

cka ckad pvc job dynamic-provisioning

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

Challenge, Medium, on Kubernetes

Exclude a Sidecar from VPA Using Per-Container Resource Policy

by Omkar Shelke

Configure a Vertical Pod Autoscaler (VPA) with a per-container resource policy that provides recommendations for the main container while excluding the sidecar container from any VPA-managed scaling.

cka vpa resources sidecar deployment