err := viper.ReadInConfig()
	// Ignore errors reading the configuration unless the file is explicitly customized
	if root.IstioConfig != defaultIstioctlConfig {
		return err
	}

	return nil
}

func init() {
	viper.SetDefault("istioNamespace", constants.IstioSystemNamespace)
	viper.SetDefault("xds-port", 15012)
}

// GetRootCmd returns the root of the cobra command-tree.

			log.Errorf("Failed to configure log %v", err)
		}
		return nil
	},
	RunE: func(c *cobra.Command, args []string) (err error) {
		cmd.PrintFlags(c.Flags())
		ctx := c.Context()

		// Start controlz server
		_, _ = ctrlz.Run(ctrlzOptions, nil)

		var cfg *config.Config
		if cfg, err = constructConfig(); err != nil {
			return
		}
		log.Infof("CNI install configuration: \n%+v", cfg.InstallConfig)

	rootCmd.AddCommand(InstallCmd(ctx))
	rootCmd.AddCommand(ProfileCmd(ctx))
	rootCmd.AddCommand(OperatorCmd(ctx))
	rootCmd.AddCommand(version.CobraCommand())
	rootCmd.AddCommand(UpgradeCmd(ctx))

	return rootCmd