The kubelet and other kubernetes-related packages have only rc service files. There are no systemd service files included in the package. e.g. https://github.com/kubernetes/contrib/blob/master/init/systemd/kubelet.service The official documentation, for example, shows a way to add the kubelet.service file from https://github.com/kubernetes/kubernetes/tree/master/build/debs. https://kubernetes.io/docs/setup/independent/install-kubeadm/#k8s-install-2
I added it to kubelet-1.13.3