diff --git a/weed/command/s3.go b/weed/command/s3.go
index ca1b06d3f..a9b317138 100644
--- a/weed/command/s3.go
+++ b/weed/command/s3.go
@@ -153,10 +153,7 @@ func (s3opt *S3Options) startS3Server() bool {
 		}
 	}
 
-	glog.V(0).Infof("s3 server sends metrics to %s every %d seconds", metricsAddress, metricsIntervalSec)
-	if metricsAddress != "" && metricsIntervalSec > 0 {
-		go stats_collect.LoopPushingMetric("s3", stats_collect.SourceName(uint32(*s3opt.port)), stats_collect.S3Gather, metricsAddress, metricsIntervalSec)
-	}
+	go stats_collect.LoopPushingMetric("s3", stats_collect.SourceName(uint32(*s3opt.port)), stats_collect.S3Gather, metricsAddress, metricsIntervalSec)
 
 	router := mux.NewRouter().SkipClean(true)
 
diff --git a/weed/s3api/auth_credentials.go b/weed/s3api/auth_credentials.go
index ecad98f3c..31519e6e3 100644
--- a/weed/s3api/auth_credentials.go
+++ b/weed/s3api/auth_credentials.go
@@ -64,7 +64,7 @@ func (iam *IdentityAccessManagement) loadS3ApiConfiguration(fileName string) err
 		return fmt.Errorf("fail to read %s : %v", fileName, readErr)
 	}
 
-	glog.V(1).Infof("maybeLoadVolumeInfo Unmarshal volume info %v", fileName)
+	glog.V(1).Infof("load s3 config: %v", fileName)
 	if err := jsonpb.Unmarshal(bytes.NewReader(rawData), s3ApiConfiguration); err != nil {
 		glog.Warningf("unmarshal error: %v", err)
 		return fmt.Errorf("unmarshal %s error: %v", fileName, err)
diff --git a/weed/security/tls.go b/weed/security/tls.go
index 1832e6e07..ff5881605 100644
--- a/weed/security/tls.go
+++ b/weed/security/tls.go
@@ -45,8 +45,13 @@ func LoadClientTLS(config *viper.Viper, component string) grpc.DialOption {
 		return grpc.WithInsecure()
 	}
 
+	certFileName, keyFileName := config.GetString(component+".cert"), config.GetString(component+".key")
+	if certFileName == "" || keyFileName == "" {
+		return grpc.WithInsecure()
+	}
+
 	// load cert/key, cacert
-	cert, err := tls.LoadX509KeyPair(config.GetString(component+".cert"), config.GetString(component+".key"))
+	cert, err := tls.LoadX509KeyPair(certFileName, keyFileName)
 	if err != nil {
 		glog.V(1).Infof("load cert/key error: %v", err)
 		return grpc.WithInsecure()
diff --git a/weed/server/filer_server.go b/weed/server/filer_server.go
index 8ab24b8f4..4d6d424dc 100644
--- a/weed/server/filer_server.go
+++ b/weed/server/filer_server.go
@@ -157,11 +157,6 @@ func (fs *FilerServer) maybeStartMetrics() {
 		}
 	}
 
-	glog.V(0).Infof("filer sends metrics to %s every %d seconds", fs.metricsAddress, fs.metricsIntervalSec)
-
-	if fs.metricsAddress == "" && fs.metricsIntervalSec <= 0 {
-		return
-	}
 	go stats.LoopPushingMetric("filer", stats.SourceName(fs.option.Port), stats.FilerGather, fs.metricsAddress, fs.metricsIntervalSec)
 }
 
diff --git a/weed/server/master_grpc_server_volume.go b/weed/server/master_grpc_server_volume.go
index 2d11beac5..168975fb6 100644
--- a/weed/server/master_grpc_server_volume.go
+++ b/weed/server/master_grpc_server_volume.go
@@ -3,7 +3,6 @@ package weed_server
 import (
 	"context"
 	"fmt"
-	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/storage/backend"
 
 	"github.com/chrislusf/raft"
@@ -183,8 +182,6 @@ func (ms *MasterServer) LookupEcVolume(ctx context.Context, req *master_pb.Looku
 
 func (ms *MasterServer) GetMasterConfiguration(ctx context.Context, req *master_pb.GetMasterConfigurationRequest) (*master_pb.GetMasterConfigurationResponse, error) {
 
-	glog.V(0).Infof("master sends metrics to %s every %d seconds", ms.option.MetricsAddress, ms.option.MetricsIntervalSec)
-
 	resp := &master_pb.GetMasterConfigurationResponse{
 		MetricsAddress:         ms.option.MetricsAddress,
 		MetricsIntervalSeconds: uint32(ms.option.MetricsIntervalSec),
diff --git a/weed/server/volume_server.go b/weed/server/volume_server.go
index b5594faab..5e9ec1369 100644
--- a/weed/server/volume_server.go
+++ b/weed/server/volume_server.go
@@ -97,9 +97,7 @@ func NewVolumeServer(adminMux, publicMux *http.ServeMux, ip string,
 	}
 
 	go vs.heartbeat()
-	glog.V(0).Infof("volume server sends metrics to %s every %d seconds", vs.metricsAddress, vs.metricsIntervalSec)
-	hostAddress := fmt.Sprintf("%s:%d", ip, port)
-	go stats.LoopPushingMetric("volumeServer", hostAddress, stats.VolumeServerGather, vs.metricsAddress, vs.metricsIntervalSec)
+	go stats.LoopPushingMetric("volumeServer", fmt.Sprintf("%s:%d", ip, port), stats.VolumeServerGather, vs.metricsAddress, vs.metricsIntervalSec)
 
 	return vs
 }
diff --git a/weed/stats/metrics.go b/weed/stats/metrics.go
index 161cc1cda..29e7c8edf 100644
--- a/weed/stats/metrics.go
+++ b/weed/stats/metrics.go
@@ -133,6 +133,8 @@ func LoopPushingMetric(name, instance string, gatherer *prometheus.Registry, add
 		return
 	}
 
+	glog.V(0).Infof("%s server sends metrics to %s every %d seconds", name, addr, intervalSeconds)
+
 	pusher := push.New(addr, name).Gatherer(gatherer).Grouping("instance", instance)
 
 	for {