Merge pull request #8963 from jbtk/main_success

Add metric that is emitted after a successful single run of static autoscaler

Author: k8s-ci-robot

cluster-autoscaler/loop/run.go

@@ -37,7 +37,9 @@ func RunAutoscalerOnce(autoscaler autoscaler, healthCheck *metrics.HealthCheck,
 	if err != nil && err.Type() != errors.TransientError {
 		metrics.RegisterError(err)
 	} else {
-		healthCheck.UpdateLastSuccessfulRun(time.Now())
+		var successTime = time.Now()
+		healthCheck.UpdateLastSuccessfulRun(successTime)
+		metrics.UpdateLastTime(metrics.MainSuccessful, successTime)
 	}
 
 	metrics.UpdateDurationFromStart(metrics.Main, loopStart)

cluster-autoscaler/metrics/metrics.go

@@ -110,6 +110,7 @@ const (
 	FilterOutSchedulable       FunctionLabel = "filterOutSchedulable"
 	CloudProviderRefresh       FunctionLabel = "cloudProviderRefresh"
 	Main                       FunctionLabel = "main"
+	MainSuccessful             FunctionLabel = "mainSuccessful"
 	Poll                       FunctionLabel = "poll"
 	Reconfigure                FunctionLabel = "reconfigure"
 	Autoscaling                FunctionLabel = "autoscaling"