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, Security

CKA Practice: Renew Expiring Control Plane Certificates

by Shiva Swaroop N K

kubectl is dead: the kube-apiserver certificate expired and the control plane is down, while the workload quietly keeps serving. Diagnose the expiry offline, renew the certificates, bring the control plane back, and prove the cluster recovered.

#cka #kubeadm #certificates

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

Troubleshoot Why the Calendar Todo App Pods Are Stuck in Pending

by Omkar Shelke

The production "Calendar Todo" web application has been deployed in the prod namespace but all pods are stuck in Pending. Investigate the cluster, identify why the application cannot run, fix the underlying node issue, and verify the app is serving traffic on NodePort 31777.

#cka #troubleshooting #kubelet #kubeadm #broken-cluster