Cluster-Autoscaler: add map to disable status configmap

cluster-autoscaler/core/autoscaling_context.go

@@ -94,6 +94,8 @@ type AutoscalingOptions struct {
 	ScaleDownDelay time.Duration
 	// ScaleDownTrialInterval sets how often scale down possibility is check
 	ScaleDownTrialInterval time.Duration
+	// WriteStatusConfigMap tells if the status information should be written to a ConfigMap
+	WriteStatusConfigMap bool
 }
 
 // NewAutoscalingContext returns an autoscaling context from all the necessary parameters passed via arguments

cluster-autoscaler/core/static_autoscaler.go

@@ -265,6 +265,9 @@ func (a *StaticAutoscaler) RunOnce(currentTime time.Time) {
 
 // ExitCleanUp removes status configmap.
 func (a *StaticAutoscaler) ExitCleanUp() {
+	if !a.AutoscalingContext.WriteStatusConfigMap {
+		return
+	}
 	maps := a.AutoscalingContext.ClientSet.CoreV1().ConfigMaps(StatusConfigMapNamespace)
 	err := maps.Delete(StatusConfigMapName, &metav1.DeleteOptions{})
 	if err != nil {
@@ -274,6 +277,9 @@ func (a *StaticAutoscaler) ExitCleanUp() {
 }
 
 func (a *StaticAutoscaler) writeStatusConfigMap() {
+	if !a.AutoscalingContext.WriteStatusConfigMap {
+		return
+	}
 	statusUpdateTime := time.Now()
 	status := a.ClusterStateRegistry.GetStatus(statusUpdateTime)
 	statusMsg := fmt.Sprintf("Cluster-autoscaler status at %v:\n%v", statusUpdateTime, status.GetReadableString())

cluster-autoscaler/main.go

@@ -95,6 +95,8 @@ var (
 
 	expanderFlag = flag.String("expander", expander.RandomExpanderName,
 		"Type of node group expander to be used in scale up. Available values: ["+strings.Join(expander.AvailableExpanders, ",")+"]")
+
+	writeStatusConfigMapFlag = flag.Bool("write-status-configmap", true, "Should CA write status information to a configmap")
 )
 
 func createAutoscalerOptions() core.AutoscalerOptions {
@@ -117,6 +119,7 @@ func createAutoscalerOptions() core.AutoscalerOptions {
 		ScaleDownUnreadyTime:          *scaleDownUnreadyTime,
 		ScaleDownUtilizationThreshold: *scaleDownUtilizationThreshold,
 		VerifyUnschedulablePods:       *verifyUnschedulablePods,
+		WriteStatusConfigMap:          *writeStatusConfigMapFlag,
 	}
 
 	configFetcherOpts := dynamic.ConfigFetcherOptions{