err,
		)
	}
	if config.RootCAs == nil {
		t.Errorf(
			"failed configRootCAs:\n\texpected: RootCAs not equal to nil\n\tactual:%v",
			config.RootCAs,
		)
	}
}
func TestConfigCertAndKey(t *testing.T) {
	certFile, err := os.CreateTemp(os.TempDir(), "kubeadm-external-etcd-test-certfile")
	if err != nil {
		t.Errorf(