Merge pull request kubernetes#120574 from logicalhan/cslis

promote component SLIs to GA; remove feature gates for component slis

Author: k8s-ci-robot

cmd/kube-controller-manager/app/controllermanager.go

@@ -215,9 +215,8 @@ func Run(ctx context.Context, c *config.CompletedConfig) error {
 	var unsecuredMux *mux.PathRecorderMux
 	if c.SecureServing != nil {
 		unsecuredMux = genericcontrollermanager.NewBaseHandler(&c.ComponentConfig.Generic.Debugging, healthzHandler)
-		if utilfeature.DefaultFeatureGate.Enabled(features.ComponentSLIs) {
-			slis.SLIMetricsWithReset{}.Install(unsecuredMux)
-		}
+		slis.SLIMetricsWithReset{}.Install(unsecuredMux)
+
 		handler := genericcontrollermanager.BuildHandlerChain(unsecuredMux, &c.Authorization, &c.Authentication)
 		// TODO: handle stoppedCh and listenerStoppedCh returned by c.SecureServing.Serve
 		if _, _, err := c.SecureServing.Serve(handler, 0, stopCh); err != nil {

cmd/kube-proxy/app/server.go

@@ -806,9 +806,8 @@ func serveMetrics(bindAddress string, proxyMode kubeproxyconfig.ProxyMode, enabl
 
 	proxyMux := mux.NewPathRecorderMux("kube-proxy")
 	healthz.InstallHandler(proxyMux)
-	if utilfeature.DefaultFeatureGate.Enabled(metricsfeatures.ComponentSLIs) {
-		slis.SLIMetricsWithReset{}.Install(proxyMux)
-	}
+	slis.SLIMetricsWithReset{}.Install(proxyMux)
+
 	proxyMux.HandleFunc("/proxyMode", func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Type", "text/plain; charset=utf-8")
 		w.Header().Set("X-Content-Type-Options", "nosniff")

cmd/kube-scheduler/app/server.go

@@ -294,9 +294,8 @@ func newHealthzAndMetricsHandler(config *kubeschedulerconfig.KubeSchedulerConfig
 	pathRecorderMux := mux.NewPathRecorderMux("kube-scheduler")
 	healthz.InstallHandler(pathRecorderMux, checks...)
 	installMetricHandler(pathRecorderMux, informers, isLeader)
-	if utilfeature.DefaultFeatureGate.Enabled(features.ComponentSLIs) {
-		slis.SLIMetricsWithReset{}.Install(pathRecorderMux)
-	}
+	slis.SLIMetricsWithReset{}.Install(pathRecorderMux)
+
 	if config.EnableProfiling {
 		routes.Profiling{}.Install(pathRecorderMux)
 		if config.EnableContentionProfiling {

pkg/kubelet/server/server.go

@@ -377,9 +377,8 @@ func (s *Server) InstallDefaultHandlers() {
 		healthz.NamedCheck("syncloop", s.syncLoopHealthCheck),
 	)
 
-	if utilfeature.DefaultFeatureGate.Enabled(metricsfeatures.ComponentSLIs) {
-		slis.SLIMetricsWithReset{}.Install(s.restfulCont)
-	}
+	slis.SLIMetricsWithReset{}.Install(s.restfulCont)
+
 	s.addMetricsBucketMatcher("pods")
 	ws := new(restful.WebService)
 	ws.

staging/src/k8s.io/apiserver/pkg/server/config.go

@@ -994,14 +994,10 @@ func installAPI(s *GenericAPIServer, c *Config) {
 	if c.EnableMetrics {
 		if c.EnableProfiling {
 			routes.MetricsWithReset{}.Install(s.Handler.NonGoRestfulMux)
-			if utilfeature.DefaultFeatureGate.Enabled(features.ComponentSLIs) {
-				slis.SLIMetricsWithReset{}.Install(s.Handler.NonGoRestfulMux)
-			}
+			slis.SLIMetricsWithReset{}.Install(s.Handler.NonGoRestfulMux)
 		} else {
 			routes.DefaultMetrics{}.Install(s.Handler.NonGoRestfulMux)
-			if utilfeature.DefaultFeatureGate.Enabled(features.ComponentSLIs) {
-				slis.SLIMetrics{}.Install(s.Handler.NonGoRestfulMux)
-			}
+			slis.SLIMetrics{}.Install(s.Handler.NonGoRestfulMux)
 		}
 	}
 

staging/src/k8s.io/cloud-provider/app/controllermanager.go

@@ -202,9 +202,9 @@ func Run(c *cloudcontrollerconfig.CompletedConfig, cloud cloudprovider.Interface
 	// Start the controller manager HTTP server
 	if c.SecureServing != nil {
 		unsecuredMux := genericcontrollermanager.NewBaseHandler(&c.ComponentConfig.Generic.Debugging, healthzHandler)
-		if utilfeature.DefaultFeatureGate.Enabled(features.ComponentSLIs) {
-			slis.SLIMetricsWithReset{}.Install(unsecuredMux)
-		}
+
+		slis.SLIMetricsWithReset{}.Install(unsecuredMux)
+
 		handler := genericcontrollermanager.BuildHandlerChain(unsecuredMux, &c.Authorization, &c.Authentication)
 		// TODO: handle stoppedCh and listenerStoppedCh returned by c.SecureServing.Serve
 		if _, _, err := c.SecureServing.Serve(handler, 0, stopCh); err != nil {

staging/src/k8s.io/component-base/metrics/prometheus/slis/metrics.go

@@ -37,7 +37,7 @@ var (
 			Namespace:      "kubernetes",
 			Name:           "healthcheck",
 			Help:           "This metric records the result of a single healthcheck.",
-			StabilityLevel: k8smetrics.BETA,
+			StabilityLevel: k8smetrics.STABLE,
 		},
 		[]string{"name", "type"},
 	)
@@ -48,7 +48,7 @@ var (
 			Namespace:      "kubernetes",
 			Name:           "healthchecks_total",
 			Help:           "This metric records the results of all healthcheck.",
-			StabilityLevel: k8smetrics.BETA,
+			StabilityLevel: k8smetrics.STABLE,
 		},
 		[]string{"name", "type", "status"},
 	)

staging/src/k8s.io/component-base/metrics/prometheus/slis/metrics_test.go

@@ -37,10 +37,10 @@ func TestObserveHealthcheck(t *testing.T) {
 	initialState := Error
 	healthcheckName := "healthcheck-a"
 	initialOutput := `
-        # HELP kubernetes_healthcheck [BETA] This metric records the result of a single healthcheck.
+        # HELP kubernetes_healthcheck [STABLE] This metric records the result of a single healthcheck.
         # TYPE kubernetes_healthcheck gauge
         kubernetes_healthcheck{name="healthcheck-a",type="healthz"} 0
-        # HELP kubernetes_healthchecks_total [BETA] This metric records the results of all healthcheck.
+        # HELP kubernetes_healthchecks_total [STABLE] This metric records the results of all healthcheck.
         # TYPE kubernetes_healthchecks_total counter
         kubernetes_healthchecks_total{name="healthcheck-a",status="error",type="healthz"} 1
 `
@@ -57,10 +57,10 @@ func TestObserveHealthcheck(t *testing.T) {
 			hcType:   "healthz",
 			hcStatus: Success,
 			want: `
-        # HELP kubernetes_healthcheck [BETA] This metric records the result of a single healthcheck.
+        # HELP kubernetes_healthcheck [STABLE] This metric records the result of a single healthcheck.
         # TYPE kubernetes_healthcheck gauge
         kubernetes_healthcheck{name="healthcheck-a",type="healthz"} 1
-        # HELP kubernetes_healthchecks_total [BETA] This metric records the results of all healthcheck.
+        # HELP kubernetes_healthchecks_total [STABLE] This metric records the results of all healthcheck.
         # TYPE kubernetes_healthchecks_total counter
         kubernetes_healthchecks_total{name="healthcheck-a",status="error",type="healthz"} 1
         kubernetes_healthchecks_total{name="healthcheck-a",status="success",type="healthz"} 1

test/instrumentation/testdata/stable-metrics-list.yaml

@@ -96,23 +96,6 @@
   labels:
   - name
   - stage
-- name: healthcheck
-  namespace: kubernetes
-  help: This metric records the result of a single healthcheck.
-  type: Gauge
-  stabilityLevel: BETA
-  labels:
-  - name
-  - type
-- name: healthchecks_total
-  namespace: kubernetes
-  help: This metric records the results of all healthcheck.
-  type: Counter
-  stabilityLevel: BETA
-  labels:
-  - name
-  - status
-  - type
 - name: registered_metrics_total
   help: The count of registered metrics broken by stability level and deprecation
     version.
@@ -446,6 +429,23 @@
   - priority
   - resource
   - unit
+- name: healthcheck
+  namespace: kubernetes
+  help: This metric records the result of a single healthcheck.
+  type: Gauge
+  stabilityLevel: STABLE
+  labels:
+  - name
+  - type
+- name: healthchecks_total
+  namespace: kubernetes
+  help: This metric records the results of all healthcheck.
+  type: Counter
+  stabilityLevel: STABLE
+  labels:
+  - name
+  - status
+  - type
 - name: evictions_total
   subsystem: node_collector
   help: Number of Node evictions that happened since current instance of NodeController