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 on Kubernetes, Networking

Troubleshoot an Ingress That Returns 404 Not Found

by Omkar Shelke

An nginx Deployment runs fine, but its address returns an error. Trace the path from the Ingress to the Pod and fix the manifests.

#ingress #service #ckad #troubleshooting #cka

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

Node Is Ready, but Pods Won't Schedule

by Omkar Shelke

node-02 is back from a kernel upgrade but still shows Ready,SchedulingDisabled, and the Pods that can only run on it are stuck in Pending. Bring the node back into service and get the workload running, without touching the workload itself.

#cka #scheduling #nodes #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

CKA Practice: Recover a NotReady Node After a Kubelet Configuration Error

by Shiva Swaroop N K

A worker node dropped to NotReady and part of the workload went with it. The container runtime is fine and the control plane is healthy; the trail leads from kubectl symptoms down into systemd and the kubelet configuration. Diagnose the node and bring it back.

#cka #kubelet #nodes #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

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 prepared for you by the iximiuz Labs team.

Challenge on Linux

Troubleshoot a Worker Service That Keeps Disappearing

by Ivan Velichko

A systemd-managed worker process starts cleanly, prints a few heartbeat lines, then silently vanishes - over and over again. Diagnose why the process keeps dying and stabilize the service.

#troubleshooting #systemd #oom #cgroups

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

Challenge on Linux

Troubleshoot an Image Conversion Daemon

by Ivan Velichko

An image conversion daemon was installed from a vendor package, but it fails to start. Diagnose why the binary cannot be loaded and fix the installation.

#troubleshooting #os-packages #ldd #shared-library

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

Challenge on Linux

Troubleshoot a Log Shipping Daemon That Refuses to Start

by Ivan Velichko

A system daemon crashes on startup with a cryptic, non-actionable error message. Investigate the failure, identify its root cause, and get the service running.

#troubleshooting #syscall #strace