Enabling kube-proxy metrics on windows kernel mode

cmd/kube-proxy/app/server_windows.go

@@ -141,6 +141,8 @@ func newProxyServer(config *proxyconfigapi.KubeProxyConfiguration, cleanupAndExi
 		if err != nil {
 			return nil, fmt.Errorf("unable to create proxier: %v", err)
 		}
+
+		winkernel.RegisterMetrics()
 	} else {
 		klog.V(0).InfoS("Using userspace Proxier.")
 		klog.V(0).InfoS("The userspace proxier is now deprecated and will be removed in a future release, please use 'kernelspace' instead")

pkg/proxy/winkernel/metrics.go

@@ -19,40 +19,21 @@ package winkernel
 import (
 	"sync"
 
-	"k8s.io/component-base/metrics"
 	"k8s.io/component-base/metrics/legacyregistry"
-)
-
-const kubeProxySubsystem = "kubeproxy"
-
-var (
-	SyncProxyRulesLatency = metrics.NewHistogram(
-		&metrics.HistogramOpts{
-			Subsystem:      kubeProxySubsystem,
-			Name:           "sync_proxy_rules_duration_seconds",
-			Help:           "SyncProxyRules latency in seconds",
-			Buckets:        metrics.ExponentialBuckets(0.001, 2, 15),
-			StabilityLevel: metrics.ALPHA,
-		},
-	)
-
-	// SyncProxyRulesLastTimestamp is the timestamp proxy rules were last
-	// successfully synced.
-	SyncProxyRulesLastTimestamp = metrics.NewGauge(
-		&metrics.GaugeOpts{
-			Subsystem:      kubeProxySubsystem,
-			Name:           "sync_proxy_rules_last_timestamp_seconds",
-			Help:           "The last time proxy rules were successfully synced",
-			StabilityLevel: metrics.ALPHA,
-		},
-	)
+	"k8s.io/kubernetes/pkg/proxy/metrics"
 )
 
 var registerMetricsOnce sync.Once
 
+// RegisterMetrics registers kube-proxy metrics for Windows modes.
 func RegisterMetrics() {
 	registerMetricsOnce.Do(func() {
-		legacyregistry.MustRegister(SyncProxyRulesLatency)
-		legacyregistry.MustRegister(SyncProxyRulesLastTimestamp)
+		legacyregistry.MustRegister(metrics.SyncProxyRulesLatency)
+		legacyregistry.MustRegister(metrics.SyncProxyRulesLastTimestamp)
+		legacyregistry.MustRegister(metrics.EndpointChangesPending)
+		legacyregistry.MustRegister(metrics.EndpointChangesTotal)
+		legacyregistry.MustRegister(metrics.ServiceChangesPending)
+		legacyregistry.MustRegister(metrics.ServiceChangesTotal)
+		legacyregistry.MustRegister(metrics.SyncProxyRulesLastQueuedTimestamp)
 	})
 }

pkg/proxy/winkernel/proxier.go

@@ -972,17 +972,19 @@ func (proxier *Proxier) syncProxyRules() {
 	proxier.mu.Lock()
 	defer proxier.mu.Unlock()
 
-	start := time.Now()
-	defer func() {
-		SyncProxyRulesLatency.Observe(metrics.SinceInSeconds(start))
-		klog.V(4).InfoS("Syncing proxy rules complete", "elapsed", time.Since(start))
-	}()
 	// don't sync rules till we've received services and endpoints
 	if !proxier.isInitialized() {
 		klog.V(2).InfoS("Not syncing hns until Services and Endpoints have been received from master")
 		return
 	}
 
+	// Keep track of how long syncs take.
+	start := time.Now()
+	defer func() {
+		metrics.SyncProxyRulesLatency.Observe(metrics.SinceInSeconds(start))
+		klog.V(4).InfoS("Syncing proxy rules complete", "elapsed", time.Since(start))
+	}()
+
 	hnsNetworkName := proxier.network.name
 	hns := proxier.hns
 
@@ -1310,7 +1312,7 @@ func (proxier *Proxier) syncProxyRules() {
 	if proxier.healthzServer != nil {
 		proxier.healthzServer.Updated()
 	}
-	SyncProxyRulesLastTimestamp.SetToCurrentTime()
+	metrics.SyncProxyRulesLastTimestamp.SetToCurrentTime()
 
 	// Update service healthchecks.  The endpoints list might include services that are
 	// not "OnlyLocal", but the services list will not, and the serviceHealthServer