return "", "", err
	}

	return certPath, keyPath, nil
}

// createCertAndKeyFilesUsingRename creates cert and key files under a parent dir `identity` as
// <certDir>/identity/kubelet.cert, <certDir>/identity/kubelet.key
func createCertAndKeyFilesUsingRename(certDir string) (string, string, error) {
	cert, key, err := cert.GenerateSelfSignedCertKey("k8s.io", nil, nil)
	if err != nil {