func createClients(ns *api.Namespace, t *testing.T, s *httptest.Server, syncPeriod time.Duration) (*clientset.Clientset, *persistentvolumecontroller.PersistentVolumeController, watch.Interface, watch.Interface) {
	// Use higher QPS and Burst, there is a test for race conditions which
	// creates many objects and default values were too low.
	binderClient := clientset.NewForConfigOrDie(&restclient.Config{
		Host:          s.URL,
		ContentConfig: restclient.ContentConfig{GroupVersion: testapi.Default.GroupVersion()},
		QPS:           1000000,
		Burst:         1000000,
	})
	testClient := clientset.NewForConfigOrDie(&restclient.Config{
		Host:          s.URL,
		ContentConfig: restclient.ContentConfig{GroupVersion: testapi.Default.GroupVersion()},
		QPS:           1000000,
		Burst:         1000000,
	})

	host := volumetest.NewFakeVolumeHost("/tmp/fake", nil, nil, "" /* rootContext */)
	plugin := &volumetest.FakeVolumePlugin{
		PluginName:             provisionerPluginName,
		Host:                   host,
		Config:                 volume.VolumeConfig{},
		LastProvisionerOptions: volume.VolumeOptions{},
		NewAttacherCallCount:   0,
		NewDetacherCallCount:   0,
		Mounters:               nil,
		Unmounters:             nil,
		Attachers:              nil,
		Detachers:              nil,
	}
	plugins := []volume.VolumePlugin{plugin}
	cloud := &fake_cloud.FakeCloud{}

	syncPeriod = getSyncPeriod(syncPeriod)
	ctrl := persistentvolumecontroller.NewPersistentVolumeControllerFromClient(
		binderClient,
		syncPeriod,
		nil, // alpha provisioner
		plugins,
		cloud,
		"",   // cluster name
		nil,  // volumeSource
		nil,  // claimSource
		nil,  // classSource
		nil,  // eventRecorder
		true) // enableDynamicProvisioning

	watchPV, err := testClient.PersistentVolumes().Watch(api.ListOptions{})
	if err != nil {
		t.Fatalf("Failed to watch PersistentVolumes: %v", err)
	}
	watchPVC, err := testClient.PersistentVolumeClaims(ns.Name).Watch(api.ListOptions{})
	if err != nil {
		t.Fatalf("Failed to watch PersistentVolumeClaimss: %v", err)
	}

	return testClient, ctrl, watchPV, watchPVC
}
func (s *CMServer) Run(_ []string) error {
	if s.Kubeconfig == "" && s.Master == "" {
		glog.Warningf("Neither --kubeconfig nor --master was specified.  Using default API client.  This might not work.")
	}

	// This creates a client, first loading any specified kubeconfig
	// file, and then overriding the Master flag, if non-empty.
	kubeconfig, err := clientcmd.NewNonInteractiveDeferredLoadingClientConfig(
		&clientcmd.ClientConfigLoadingRules{ExplicitPath: s.Kubeconfig},
		&clientcmd.ConfigOverrides{ClusterInfo: clientcmdapi.Cluster{Server: s.Master}}).ClientConfig()
	if err != nil {
		return err
	}

	kubeconfig.QPS = 20.0
	kubeconfig.Burst = 30

	kubeClient, err := client.New(kubeconfig)
	if err != nil {
		glog.Fatalf("Invalid API configuration: %v", err)
	}

	go func() {
		mux := http.NewServeMux()
		healthz.InstallHandler(mux)
		if s.EnableProfiling {
			profile.InstallHandler(mux)
		}
		mux.Handle("/metrics", prometheus.Handler())
		server := &http.Server{
			Addr:    net.JoinHostPort(s.Address, strconv.Itoa(int(s.Port))),
			Handler: mux,
		}
		glog.Fatal(server.ListenAndServe())
	}()

	endpoints := s.createEndpointController(clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "endpoint-controller")))
	go endpoints.Run(int(s.ConcurrentEndpointSyncs), wait.NeverStop)

	go replicationcontroller.NewReplicationManagerFromClient(clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "replication-controller")), s.resyncPeriod, replicationcontroller.BurstReplicas, int(s.LookupCacheSizeForRC)).
		Run(int(s.ConcurrentRCSyncs), wait.NeverStop)

	if s.TerminatedPodGCThreshold > 0 {
		go podgc.New(clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "pod-garbage-collector")), s.resyncPeriod, int(s.TerminatedPodGCThreshold)).
			Run(wait.NeverStop)
	}

	//TODO(jdef) should eventually support more cloud providers here
	if s.CloudProvider != mesos.ProviderName {
		glog.Fatalf("Only provider %v is supported, you specified %v", mesos.ProviderName, s.CloudProvider)
	}
	cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
	if err != nil {
		glog.Fatalf("Cloud provider could not be initialized: %v", err)
	}
	_, clusterCIDR, _ := net.ParseCIDR(s.ClusterCIDR)
	_, serviceCIDR, _ := net.ParseCIDR(s.ServiceCIDR)
	nodeController, err := nodecontroller.NewNodeControllerFromClient(cloud, clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "node-controller")),
		s.PodEvictionTimeout.Duration, s.NodeEvictionRate, s.SecondaryNodeEvictionRate, s.LargeClusterSizeThreshold, s.UnhealthyZoneThreshold,
		s.NodeMonitorGracePeriod.Duration, s.NodeStartupGracePeriod.Duration, s.NodeMonitorPeriod.Duration, clusterCIDR, serviceCIDR, int(s.NodeCIDRMaskSize), s.AllocateNodeCIDRs)
	if err != nil {
		glog.Fatalf("Failed to initialize nodecontroller: %v", err)
	}
	nodeController.Run()

	nodeStatusUpdaterController := node.NewStatusUpdater(clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "node-status-controller")), s.NodeMonitorPeriod.Duration, time.Now)
	if err := nodeStatusUpdaterController.Run(wait.NeverStop); err != nil {
		glog.Fatalf("Failed to start node status update controller: %v", err)
	}

	serviceController, err := servicecontroller.New(cloud, clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "service-controller")), s.ClusterName)
	if err != nil {
		glog.Errorf("Failed to start service controller: %v", err)
	} else {
		serviceController.Run(int(s.ConcurrentServiceSyncs))
	}

	if s.AllocateNodeCIDRs && s.ConfigureCloudRoutes {
		if cloud == nil {
			glog.Warning("configure-cloud-routes is set, but no cloud provider specified. Will not configure cloud provider routes.")
		} else if routes, ok := cloud.Routes(); !ok {
			glog.Warning("configure-cloud-routes is set, but cloud provider does not support routes. Will not configure cloud provider routes.")
		} else {
			routeController := routecontroller.New(routes, clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "route-controller")), s.ClusterName, clusterCIDR)
			routeController.Run(s.NodeSyncPeriod.Duration)
			time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
		}
	} else {
		glog.Infof("Will not configure cloud provider routes for allocate-node-cidrs: %v, configure-cloud-routes: %v.", s.AllocateNodeCIDRs, s.ConfigureCloudRoutes)
	}

	resourceQuotaControllerClient := clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "resource-quota-controller"))
	resourceQuotaRegistry := quotainstall.NewRegistry(resourceQuotaControllerClient)
	groupKindsToReplenish := []unversioned.GroupKind{
		api.Kind("Pod"),
		api.Kind("Service"),
		api.Kind("ReplicationController"),
		api.Kind("PersistentVolumeClaim"),
		api.Kind("Secret"),
	}
	resourceQuotaControllerOptions := &resourcequotacontroller.ResourceQuotaControllerOptions{
		KubeClient:                resourceQuotaControllerClient,
		ResyncPeriod:              controller.StaticResyncPeriodFunc(s.ResourceQuotaSyncPeriod.Duration),
		Registry:                  resourceQuotaRegistry,
		GroupKindsToReplenish:     groupKindsToReplenish,
		ReplenishmentResyncPeriod: s.resyncPeriod,
		ControllerFactory:         resourcequotacontroller.NewReplenishmentControllerFactoryFromClient(resourceQuotaControllerClient),
	}
	go resourcequotacontroller.NewResourceQuotaController(resourceQuotaControllerOptions).Run(int(s.ConcurrentResourceQuotaSyncs), wait.NeverStop)

	// If apiserver is not running we should wait for some time and fail only then. This is particularly
	// important when we start apiserver and controller manager at the same time.
	var versionStrings []string
	err = wait.PollImmediate(time.Second, 10*time.Second, func() (bool, error) {
		if versionStrings, err = restclient.ServerAPIVersions(kubeconfig); err == nil {
			return true, nil
		}
		glog.Errorf("Failed to get api versions from server: %v", err)
		return false, nil
	})
	if err != nil {
		glog.Fatalf("Failed to get api versions from server: %v", err)
	}
	versions := &unversioned.APIVersions{Versions: versionStrings}

	resourceMap, err := kubeClient.Discovery().ServerResources()
	if err != nil {
		glog.Fatalf("Failed to get supported resources from server: %v", err)
	}

	// Find the list of namespaced resources via discovery that the namespace controller must manage
	namespaceKubeClient := clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "namespace-controller"))
	namespaceClientPool := dynamic.NewClientPool(restclient.AddUserAgent(kubeconfig, "namespace-controller"), dynamic.LegacyAPIPathResolverFunc)
	groupVersionResources, err := namespaceKubeClient.Discovery().ServerPreferredNamespacedResources()
	if err != nil {
		glog.Fatalf("Failed to get supported resources from server: %v", err)
	}
	namespaceController := namespacecontroller.NewNamespaceController(namespaceKubeClient, namespaceClientPool, groupVersionResources, s.NamespaceSyncPeriod.Duration, api.FinalizerKubernetes)
	go namespaceController.Run(int(s.ConcurrentNamespaceSyncs), wait.NeverStop)

	groupVersion := "extensions/v1beta1"
	resources, found := resourceMap[groupVersion]
	// TODO(k8s): this needs to be dynamic so users don't have to restart their controller manager if they change the apiserver
	if containsVersion(versions, groupVersion) && found {
		glog.Infof("Starting %s apis", groupVersion)
		if containsResource(resources, "horizontalpodautoscalers") {
			glog.Infof("Starting horizontal pod controller.")
			hpaClient := clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "horizontal-pod-autoscaler"))
			metricsClient := metrics.NewHeapsterMetricsClient(
				hpaClient,
				metrics.DefaultHeapsterNamespace,
				metrics.DefaultHeapsterScheme,
				metrics.DefaultHeapsterService,
				metrics.DefaultHeapsterPort,
			)
			go podautoscaler.NewHorizontalController(hpaClient.Core(), hpaClient.Extensions(), hpaClient, metricsClient, s.HorizontalPodAutoscalerSyncPeriod.Duration).
				Run(wait.NeverStop)
		}

		if containsResource(resources, "daemonsets") {
			glog.Infof("Starting daemon set controller")
			go daemon.NewDaemonSetsControllerFromClient(clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "daemon-set-controller")), s.resyncPeriod, int(s.LookupCacheSizeForDaemonSet)).
				Run(int(s.ConcurrentDaemonSetSyncs), wait.NeverStop)
		}

		if containsResource(resources, "jobs") {
			glog.Infof("Starting job controller")
			go job.NewJobControllerFromClient(clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "job-controller")), s.resyncPeriod).
				Run(int(s.ConcurrentJobSyncs), wait.NeverStop)
		}

		if containsResource(resources, "deployments") {
			glog.Infof("Starting deployment controller")
			go deployment.NewDeploymentController(clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "deployment-controller")), s.resyncPeriod).
				Run(int(s.ConcurrentDeploymentSyncs), wait.NeverStop)
		}

		if containsResource(resources, "replicasets") {
			glog.Infof("Starting ReplicaSet controller")
			go replicaset.NewReplicaSetControllerFromClient(clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "replicaset-controller")), s.resyncPeriod, replicaset.BurstReplicas, int(s.LookupCacheSizeForRS)).
				Run(int(s.ConcurrentRSSyncs), wait.NeverStop)
		}
	}

	alphaProvisioner, err := kubecontrollermanager.NewAlphaVolumeProvisioner(cloud, s.VolumeConfiguration)
	if err != nil {
		glog.Fatalf("An backward-compatible provisioner could not be created: %v, but one was expected. Provisioning will not work. This functionality is considered an early Alpha version.", err)
	}
	volumeController := persistentvolumecontroller.NewPersistentVolumeControllerFromClient(
		clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "persistent-volume-binder")),
		s.PVClaimBinderSyncPeriod.Duration,
		alphaProvisioner,
		kubecontrollermanager.ProbeControllerVolumePlugins(cloud, s.VolumeConfiguration),
		cloud,
		s.ClusterName,
		nil, // volumeSource
		nil, // claimSource
		nil, // classSource
		nil, // eventRecorder
		s.VolumeConfiguration.EnableDynamicProvisioning,
	)
	volumeController.Run(wait.NeverStop)

	var rootCA []byte

	if s.RootCAFile != "" {
		rootCA, err = ioutil.ReadFile(s.RootCAFile)
		if err != nil {
			return fmt.Errorf("error reading root-ca-file at %s: %v", s.RootCAFile, err)
		}
		if _, err := crypto.CertsFromPEM(rootCA); err != nil {
			return fmt.Errorf("error parsing root-ca-file at %s: %v", s.RootCAFile, err)
		}
	} else {
		rootCA = kubeconfig.CAData
	}

	if len(s.ServiceAccountKeyFile) > 0 {
		privateKey, err := serviceaccount.ReadPrivateKey(s.ServiceAccountKeyFile)
		if err != nil {
			glog.Errorf("Error reading key for service account token controller: %v", err)
		} else {
			go serviceaccountcontroller.NewTokensController(
				clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "tokens-controller")),
				serviceaccountcontroller.TokensControllerOptions{
					TokenGenerator: serviceaccount.JWTTokenGenerator(privateKey),
					RootCA:         rootCA,
				},
			).Run(int(s.ConcurrentSATokenSyncs), wait.NeverStop)
		}
	}

	serviceaccountcontroller.NewServiceAccountsController(
		clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "service-account-controller")),
		serviceaccountcontroller.DefaultServiceAccountsControllerOptions(),
	).Run()

	select {}
}