--- a/cmd/gemma/main.go	Sat Aug 21 15:01:52 2021 +0200
+++ b/cmd/gemma/main.go	Mon Sep 20 17:45:39 2021 +0200
@@ -18,7 +18,7 @@
 import (
 	"context"
 	"fmt"
-	"log"
+	lg "log"
 	"net/http"
 	"os"
 	"os/signal"
@@ -34,6 +34,7 @@
 	"gemma.intevation.de/gemma/pkg/controllers"
 	"gemma.intevation.de/gemma/pkg/geoserver"
 	"gemma.intevation.de/gemma/pkg/imports"
+	"gemma.intevation.de/gemma/pkg/log"
 	"gemma.intevation.de/gemma/pkg/middleware"
 	"gemma.intevation.de/gemma/pkg/scheduler"
 )
@@ -51,9 +52,16 @@
 
 	config.Ready()
 
+	if lf := config.LogFile(); lf != "" {
+		log.SetupLog(lf, 0666)
+		defer log.ShutdownLog()
+	}
+
+	log.SetLogLevel(config.LogLevel())
+
 	web, err := filepath.Abs(config.Web())
 	if err != nil {
-		log.Fatalf("error: %v\n", err)
+		log.Fatalf("%v\n", err)
 	}
 
 	prepareSessionStore()
@@ -73,7 +81,7 @@
 	m.PathPrefix("/").Handler(dir)
 
 	addr := fmt.Sprintf("%s:%d", config.WebHost(), config.WebPort())
-	log.Printf("info: listen on %s\n", addr)
+	log.Infof("listen on %s\n", addr)
 
 	var h http.Handler
 
@@ -102,7 +110,7 @@
 	select {
 	case err := <-done:
 		if err != nil && err != http.ErrServerClosed {
-			log.Fatalf("error: %v\n", err)
+			log.Fatalf("%v\n", err)
 		}
 	case <-sigChan:
 	}
@@ -112,14 +120,13 @@
 	<-done
 
 	if err := auth.Sessions.Shutdown(); err != nil {
-		log.Fatalf("error: %v\n", err)
+		log.Fatalf("%v\n", err)
 	}
 }
 
 func main() {
 	config.RootCmd.Run = start
-	log.SetFlags(log.LstdFlags | log.Lshortfile)
 	if err := config.RootCmd.Execute(); err != nil {
-		log.Fatalln(err)
+		lg.Fatalln(err)
 	}
 }