}

	errs := []error{}
	if err := csrSigningFilesValid(o.KubeletServingSignerConfiguration); err != nil {
		errs = append(errs, fmt.Errorf("%q: %v", "cluster-signing-kubelet-serving", err))
	}
	if err := csrSigningFilesValid(o.KubeletClientSignerConfiguration); err != nil {
		errs = append(errs, fmt.Errorf("%q: %v", "cluster-signing-kube-apiserver-client", err))
	}