volume server: adds basic metrics

weed/command/server.go

@@ -149,6 +149,8 @@ func runServer(cmd *Command, args []string) bool {
 
 	filerOptions.metricsAddress = serverOptions.metricsAddress
 	filerOptions.metricsIntervalSec = serverOptions.metricsIntervalSec
+	serverOptions.v.metricsAddress = serverOptions.metricsAddress
+	serverOptions.v.metricsIntervalSec = serverOptions.metricsIntervalSec
 
 	filerAddress := fmt.Sprintf("%s:%d", *serverIp, *filerOptions.port)
 	s3Options.filer = &filerAddress

weed/command/volume.go

@@ -45,6 +45,8 @@ type VolumeServerOptions struct {
 	cpuProfile            *string
 	memProfile            *string
 	compactionMBPerSecond *int
+	metricsAddress        *string
+	metricsIntervalSec    *int
 }
 
 func init() {
@@ -66,6 +68,8 @@ func init() {
 	v.cpuProfile = cmdVolume.Flag.String("cpuprofile", "", "cpu profile output file")
 	v.memProfile = cmdVolume.Flag.String("memprofile", "", "memory profile output file")
 	v.compactionMBPerSecond = cmdVolume.Flag.Int("compactionMBps", 0, "limit background compaction or copying speed in mega bytes per second")
+	v.metricsAddress = cmdVolume.Flag.String("metrics.address", "", "Prometheus gateway address")
+	v.metricsIntervalSec = cmdVolume.Flag.Int("metrics.intervalSeconds", 15, "Prometheus push interval in seconds")
 }
 
 var cmdVolume = &Command{
@@ -161,6 +165,8 @@ func (v VolumeServerOptions) startVolumeServer(volumeFolders, maxVolumeCounts, v
 		v.whiteList,
 		*v.fixJpgOrientation, *v.readRedirect,
 		*v.compactionMBPerSecond,
+		*v.metricsAddress,
+		*v.metricsIntervalSec,
 	)
 
 	listeningAddress := *v.bindIp + ":" + strconv.Itoa(*v.port)