Challenges | iximiuz Labs

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Official Collection

Challenges crafted by iximiuz Labs to help you master DevOps and Server Side topics.

This challenge was prepared for you by the iximiuz Labs team.

Challenge, Easy, on Kubernetes, Containers

Deploy a Pod with a Container Image from a Private Registry

by Ivan Velichko

Practice configuring Kubernetes to pull images from a private registry and run Pods with authenticated registry access.

kubernetes-101 container-registry container-image kubectl

This challenge was prepared for you by the iximiuz Labs team.

Challenge, Medium, on Containers, Kubernetes, Linux

Diagnose and Resolve Stability Issues in a Go Application Deployment

by Ivan Velichko

This challenge focuses on debugging memory usage issues in a Go application deployed in a Kubernetes cluster. The goal is to ensure the application can handle moderate traffic without crashing, even when it runs with significantly constrained memory resources.

pod-resources cgroups oom go

This challenge was prepared for you by the iximiuz Labs team.

Challenge, Hard, on Kubernetes, Containers, Linux

Make a Kubernetes Pod Survive an OOM Event Without Restarting

by Ivan Velichko

Hack your way through this challenge making the OOM kills invisible again.

pod-resources cgroups oom

This challenge was prepared for you by the iximiuz Labs team.

Challenge, Easy, on Kubernetes, Containers

Deploy a Resource-Greedy Pod Without Breaking the Kubernetes Cluster

by Ivan Velichko

Prove your SRE skills - deploy a resource-greedy application to a Kubernetes cluster and make it run for a while without disrupting the service.

kubernetes-101 pod-resources cgroups oom

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Independent Authors

Challenges from outstanding independent authors proudly hosted by iximiuz Labs.

This challenge was carefully crafted by an independent author and proudly hosted by iximiuz Labs.

Challenge, Hard, on Kubernetes

Kube Mysteries: The Invisible Pod

by Márk Sági-Kazár

Did you know that pods can become invisible? Can you figure out how?

kubelet pod

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, 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

Kubernetes Pod Lifecycle Fundamentals

by Adithya G

Practice the fundamental lifecycle of a Kubernetes Pod: creation, inspection (IP, node), interaction (executing commands, checking logs), and deletion.

kubernetes-101 pods kubectl

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

CKA Practice: Upgrade Multi-Node Kubernetes Cluster

by Adam Leskis

This exercise tests your ability to safely upgrade a multi-node Kubernetes cluster from version 1.30 to 1.31 following the standard upgrade procedure.

cka

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

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

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