// (Currently just --endpoint)
func (o *CentralControlPlaneOptions) AttachControlPlaneFlags(cmd *cobra.Command) {
	cmd.PersistentFlags().StringVar(&o.Xds, "xds-address", viper.GetString("XDS-ADDRESS"),
		"XDS Endpoint")
	cmd.PersistentFlags().StringVar(&o.CertDir, "cert-dir", viper.GetString("CERT-DIR"),
		"XDS Endpoint certificate directory")
	cmd.PersistentFlags().StringVar(&o.XdsPodLabel, "xds-label", "",
		"Istiod pod label selector")

		LabelKey:           viper.GetString(constants.RepairLabelKey),
		LabelValue:         viper.GetString(constants.RepairLabelValue),
		NodeName:           viper.GetString(constants.RepairNodeName),
		SidecarAnnotation:  viper.GetString(constants.RepairSidecarAnnotation),
		InitContainerName:  viper.GetString(constants.RepairInitContainerName),
		InitTerminationMsg: viper.GetString(constants.RepairInitTerminationMsg),

		"Kubernetes configuration context")
	flags.StringVarP(r.namespace, FlagNamespace, "n", v1.NamespaceAll,
		"Kubernetes namespace")
	flags.StringVarP(r.istioNamespace, FlagIstioNamespace, "i", viper.GetString(FlagIstioNamespace),
		"Istio system namespace")
	return r
}

// Namespace returns the namespace flag value.
func (r *RootFlags) Namespace() string {
	return *r.namespace
}

	}
	sort.Strings(keys)
	w := new(tabwriter.Writer).Init(writer, 0, 8, 5, ' ', 0)
	fmt.Fprintf(w, "FLAG\tVALUE\tFROM\n")
	for _, flag := range keys {
		v := settableFlags[flag]
		fmt.Fprintf(w, "%s\t%s\t%v\n", flag, viper.GetString(flag), configSource(flag, v))
	}
	return w.Flush()
}

func configSource(flag string, v env.VariableInfo) string {
	// Environment variables have high precedence in Viper
	if v.IsSet() {
		return "$" + v.GetName()