fix doc and lint warns for the cmd package

cmd/root.go

@@ -10,6 +10,7 @@ import (
 )
 
 const (
+	// ExitSetupFailed defines exit code
 	ExitSetupFailed = 1
 )
 
@@ -38,6 +39,7 @@ func init() {
 	rootCmd.AddCommand(signalCmd)
 }
 
+// SetupCloseHandler handles SIGTERM signal and exits with success
 func SetupCloseHandler() {
 	c := make(chan os.Signal)
 	signal.Notify(c, os.Interrupt, syscall.SIGTERM)
@@ -46,10 +48,11 @@ func SetupCloseHandler() {
 	os.Exit(0)
 }
 
+// InitLog parses and sets log-level input
 func InitLog(logLevel string) {
 	level, err := log.ParseLevel(logLevel)
 	if err != nil {
-		log.Errorf("efailed parsing log-level %s: %s", logLevel, err)
+		log.Errorf("Failed parsing log-level %s: %s", logLevel, err)
 		os.Exit(ExitSetupFailed)
 	}
 	log.SetLevel(level)