Troubleshooting KCNA Practice Questions (Page 4)

Questions 16–19

1. 16application · medium

   A node in your cluster has become NotReady. You need to identify the cause. Which sequence of commands would you use to systematically diagnose the issue?

   • ARun `kubectl get nodes` to confirm the status, then `kubectl describe node <node-name>` to view conditions and events, then check kubelet logs on the node.
   • BRun `kubectl drain <node-name>` to remove workloads, then `kubectl delete node <node-name>` to remove it from the cluster.
   • CRun `kubectl logs <node-name>` to view node logs, then `kubectl exec` into the node to check system services.
   • DRun `kubectl get pods --all-namespaces` to see which pods are failing, then restart the kubelet service on the node.
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2. 17foundation · easy

   Which command shows recent events for a pod, including scheduling failures and image pull errors?

   • Akubectl logs <pod-name>
   • Bkubectl get pod <pod-name> -o json
   • Ckubectl describe pod <pod-name>
   • Dkubectl exec <pod-name> -- cat /var/log/syslog
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4. 18foundation · easy

   Which command provides documentation about the fields of a Kubernetes resource, such as a Pod?

   • Akubectl logs pod
   • Bkubectl explain pod
   • Ckubectl get pod -o yaml
   • Dkubectl describe pod
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5. 19expert · medium

   A node in your cluster is NotReady. You have SSH access to the node. The kubelet service is running, but the node is still NotReady. You check `kubectl describe node` and see that the KubeletNotReady condition is True. What is the most likely cause and what should you check next?

   • ACheck the node's network configuration and restart the CNI plugin.
   • BCheck the kubelet logs for errors, such as failure to connect to the API server or certificate issues.
   • CCheck the node's disk space and clean up unused images.
   • DCheck the node's memory usage and reduce pod requests.
   Reveal Solution Discussion Select an answer first