The kube-controller-manager on a control plane node is crashing. `journalctl -u kube-controller-manager` shows: 'failed to start controller manager: open /etc/kubernetes/controller-manager.conf: no such file or directory'. The file was present before a recent upgrade. What is the most likely cause?

The upgrade process removed or moved the kubeconfig file; restore it from backup or regenerate it.

The kube-controller-manager service is not enabled.

The kubelet is not running on the control plane node.

The kube-controller-manager is not reconciling resources. Which log source would you check to diagnose the issue?

journalctl -u kube-controller-manager

kubectl logs -n kube-system -l component=kube-controller-manager

cat /var/log/kube-controller-manager.log

kubectl logs kube-controller-manager- -n kube-system

A pod is stuck in `Pending` state. `kubectl describe pod` shows: '0/3 nodes are available: 3 node(s) didn't match node selector'. The pod has a nodeSelector for `disktype=ssd`, but no nodes have this label. What is the most likely cause?

The kube-scheduler is not running.

The nodes do not have the required label; add the label to the appropriate nodes.

The pod's resource requests exceed node capacity.

A Service of type LoadBalancer is created, but the external IP remains ` `. `kubectl get svc` shows the Service exists, and `kubectl get endpoints` shows the endpoints are populated. What is the most likely cause?

The cloud controller manager is not running or is not configured to provision load balancers.

The Service's type is incorrect.

The CoreDNS is not resolving the Service name.

The kube-apiserver static pod is failing to start. What is the recommended way to recover it?

kubectl delete pod kube-apiserver- -n kube-system

systemctl restart kube-apiserver

Fix the configuration file in /etc/kubernetes/manifests and wait for the kubelet to restart the pod

Certified Kubernetes Administrator (CKA)

Domain 2Objective 2

Troubleshoot Cluster Components CKA Practice Questions (Page 2)

Part of the Troubleshooting domain, which accounts for 30% of the CKA exam. Linux Foundation does not publish an official question count, but from its 120-minute exam (~50–80 total, ~15–24 in this domain), expect 3–5 from this objective — we provide 23 practice questions to prepare you well beyond it. (estimate)

23questions here

5free pages

6concepts

30%of the exam

Questions 6–10

6application · medium
The kube-controller-manager on a control plane node is crashing. `journalctl -u kube-controller-manager` shows: 'failed to start controller manager: open /etc/kubernetes/controller-manager.conf: no such file or directory'. The file was present before a recent upgrade. What is the most likely cause?
Select an answer first
7foundation · easy
The kube-controller-manager is not reconciling resources. Which log source would you check to diagnose the issue?
Select an answer first
8application · medium
A pod is stuck in `Pending` state. `kubectl describe pod` shows: '0/3 nodes are available: 3 node(s) didn't match node selector'. The pod has a nodeSelector for `disktype=ssd`, but no nodes have this label. What is the most likely cause?
Select an answer first
9application · medium
A Service of type LoadBalancer is created, but the external IP remains `<pending>`. `kubectl get svc` shows the Service exists, and `kubectl get endpoints` shows the endpoints are populated. What is the most likely cause?
Select an answer first
10foundation · easy
The kube-apiserver static pod is failing to start. What is the recommended way to recover it?
Select an answer first

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