fix global flags parsing

cmd/bee/cmd/cmd.go

@@ -34,6 +34,9 @@ func newCommand(opts ...option) (c *command, err error) {
 			Short:         "Ethereum Swarm Bee",
 			SilenceErrors: true,
 			SilenceUsage:  true,
+			PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
+				return c.initConfig()
+			},
 		},
 	}
 
@@ -42,9 +45,6 @@ func newCommand(opts ...option) (c *command, err error) {
 	}
 
 	c.initGlobalFlags()
-	if err := c.initConfig(); err != nil {
-		return nil, err
-	}
 
 	if err := c.initStartCmd(); err != nil {
 		return nil, err

cmd/bee/cmd/start.go

@@ -141,6 +141,9 @@ func (c *command) initStartCmd() (err error) {
 
 			return nil
 		},
+		PreRunE: func(cmd *cobra.Command, args []string) error {
+			return c.config.BindPFlags(cmd.Flags())
+		},
 	}
 
 	cmd.Flags().String(optionNameDataDir, filepath.Join(c.homeDir, ".bee"), "data directory")
@@ -157,10 +160,6 @@ func (c *command) initStartCmd() (err error) {
 	cmd.Flags().Duration(optionNameConnectionsGrace, time.Minute, "the amount of time a newly opened connection is given before it becomes subject to pruning")
 	cmd.Flags().String(optionNameVerbosity, "info", "log verbosity level 0=silent, 1=error, 2=warn, 3=info, 4=debug, 5=trace")
 
-	if err := c.config.BindPFlags(cmd.Flags()); err != nil {
-		return err
-	}
-
 	c.root.AddCommand(cmd)
 	return nil
 }