Question 9
Domain 5: TroubleshootingWhich command restarts the kubelet service on a Linux node?
Correct answer: A
Explanation
On Linux systems using systemd, "systemctl restart" stops and starts a service again. The kubelet runs as the node agent service named kubelet, so "systemctl restart kubelet" restarts that service on the node.
Why each option is right or wrong
A. systemctl restart kubelet
On a Linux node managed by systemd, the kubelet is installed as the `kubelet.service` unit, so the service manager command to stop and immediately start it again is `systemctl restart kubelet`. The relevant systemd syntax is `systemctl restart <unit>`, and no Kubernetes-specific flag or kubeadm subcommand is needed for this local service action.
B. kubectl restart kubelet
C. service kubernetes restart
D. docker restart kubelet