} else {
			loadX509KeyPair := func(certFile, keyFile string) (tls.Certificate, error) {
				// Manually load the certificate and private key into memory.
				// We need to check whether the private key is encrypted, and
				// if so, decrypt it using the user-provided password.
				certBytes, err := os.ReadFile(certFile)
				if err != nil {

			name: "either both or none of .Etcd.External.CertFile and .Etcd.External.KeyFile must be set",
			etcd: &kubeadmapi.Etcd{
				External: &kubeadmapi.ExternalEtcd{
					Endpoints: []string{"https://external.etcd1:2379", "https://external.etcd2:2379"},
					CertFile:  "/some/file.crt",
				},
			},
			expectedErrors: true,
		},
		{

func autoConvert_v1_ExtenderTLSConfig_To_config_ExtenderTLSConfig(in *v1.ExtenderTLSConfig, out *config.ExtenderTLSConfig, s conversion.Scope) error {
	out.Insecure = in.Insecure
	out.ServerName = in.ServerName
	out.CertFile = in.CertFile
	out.KeyFile = in.KeyFile
	out.CAFile = in.CAFile
	out.CertData = *(*[]byte)(unsafe.Pointer(&in.CertData))
	out.KeyData = *(*[]byte)(unsafe.Pointer(&in.KeyData))

		DialContext:         d.DialContext,
	})

	// Zero out all existing TLS options since our new transport enforces them.
	clientConfig.CertData = nil
	clientConfig.KeyData = nil
	clientConfig.CertFile = ""
	clientConfig.KeyFile = ""
	clientConfig.CAData = nil
	clientConfig.CAFile = ""
	clientConfig.Insecure = false
	clientConfig.NextProtos = nil

	return nil

	ServerName string

	// Server requires TLS client certificate authentication
	CertFile string
	// Server requires TLS client certificate authentication
	KeyFile string
	// Trusted root certificates for server
	CAFile string

	// CertData holds PEM-encoded bytes (typically read from a client certificate file).
	// CertData takes precedence over CertFile
	CertData []byte

		}
		return true, nil
	})
	if err != nil {
		return result, fmt.Errorf("failed to wait for default namespace to be created: %v", err)
	}

	tlsInfo := transport.TLSInfo{
		CertFile:      storageConfig.Transport.CertFile,
		KeyFile:       storageConfig.Transport.KeyFile,
		TrustedCAFile: storageConfig.Transport.TrustedCAFile,
	}
	tlsConfig, err := tlsInfo.ClientConfig()
	if err != nil {
		return result, err

	if err != nil {
		t.Fatal(err)
	}
	tlsInfo := transport.TLSInfo{
		CertFile:      restOptions.StorageConfig.Transport.CertFile,
		KeyFile:       restOptions.StorageConfig.Transport.KeyFile,
		TrustedCAFile: restOptions.StorageConfig.Transport.TrustedCAFile,
	}
	tlsConfig, err := tlsInfo.ClientConfig()
	if err != nil {

	if err != nil {
		t.Fatal(err)
	}
	tlsInfo := transport.TLSInfo{
		CertFile:      restOptions.StorageConfig.Transport.CertFile,
		KeyFile:       restOptions.StorageConfig.Transport.KeyFile,
		TrustedCAFile: restOptions.StorageConfig.Transport.TrustedCAFile,
	}
	tlsConfig, err := tlsInfo.ClientConfig()
	if err != nil {

			Groups:   configAuthInfo.ImpersonateGroups,
			Extra:    configAuthInfo.ImpersonateUserExtra,
		}
	}
	if len(configAuthInfo.ClientCertificate) > 0 || len(configAuthInfo.ClientCertificateData) > 0 {
		config.CertFile = configAuthInfo.ClientCertificate
		config.CertData = configAuthInfo.ClientCertificateData
		config.KeyFile = configAuthInfo.ClientKey
		config.KeyData = configAuthInfo.ClientKeyData
	}

	c.PersistentFlags().StringVar(&serverArgs.ServerOptions.TLSOptions.CaCertFile, "caCertFile", "",
		"File containing the x509 Server CA Certificate")
	c.PersistentFlags().StringVar(&serverArgs.ServerOptions.TLSOptions.CertFile, "tlsCertFile", "",
		"File containing the x509 Server Certificate")
	c.PersistentFlags().StringVar(&serverArgs.ServerOptions.TLSOptions.KeyFile, "tlsKeyFile", "",
		"File containing the x509 private key matching --tlsCertFile")