if err != nil {
		log.Errorf("could not set up prometheus exporter: %v", err)
		return
	}
	mux.Handle(path, exporter)
	monitoringServer := &http.Server{
		Handler: mux,
	}
	go func() {
		if err = monitoringServer.Serve(listener); network.IsUnexpectedListenerError(err) {
			log.Errorf("error running monitoring http server: %s", err)
		}
	}()
	go func() {
		<-stop

  // +optional
  optional int64 observedGeneration = 1;

  // DisruptedPods contains information about pods whose eviction was
  // processed by the API server eviction subresource handler but has not
  // yet been observed by the PodDisruptionBudget controller.
  // A pod will be in this map from the time when the API server processed the
  // eviction request to the time when the pod is seen by PDB controller