Golang clientcmd.BuildConfigFromFlags函數代碼示例

func TestUpdateClusterStatusOK(t *testing.T) {
	clusterName := "foobarCluster"
	// create dummy httpserver
	testClusterServer := httptest.NewServer(createHttptestFakeHandlerForCluster(true))
	defer testClusterServer.Close()
	federationCluster := newCluster(clusterName, testClusterServer.URL)
	federationClusterList := newClusterList(federationCluster)

	testFederationServer := httptest.NewServer(createHttptestFakeHandlerForFederation(federationClusterList, true))
	defer testFederationServer.Close()

	restClientCfg, err := clientcmd.BuildConfigFromFlags(testFederationServer.URL, "")
	if err != nil {
		t.Errorf("Failed to build client config")
	}
	federationClientSet := federationclientset.NewForConfigOrDie(restclient.AddUserAgent(restClientCfg, "cluster-controller"))

	manager := NewclusterController(federationClientSet, 5)
	err = manager.UpdateClusterStatus()
	if err != nil {
		t.Errorf("Failed to Update Cluster Status: %v", err)
	}
	clusterStatus, found := manager.clusterClusterStatusMap[clusterName]
	if !found {
		t.Errorf("Failed to Update Cluster Status")
	} else {
		if (clusterStatus.Conditions[1].Status != v1.ConditionFalse) || (clusterStatus.Conditions[1].Type != federation_v1alpha1.ClusterOffline) {
			t.Errorf("Failed to Update Cluster Status")
		}
	}
}

func BuildClusterConfig(c *federation_v1beta1.Cluster) (*restclient.Config, error) {
	var serverAddress string
	var clusterConfig *restclient.Config
	hostIP, err := utilnet.ChooseHostInterface()
	if err != nil {
		return nil, err
	}

	for _, item := range c.Spec.ServerAddressByClientCIDRs {
		_, cidrnet, err := net.ParseCIDR(item.ClientCIDR)
		if err != nil {
			return nil, err
		}
		myaddr := net.ParseIP(hostIP.String())
		if cidrnet.Contains(myaddr) == true {
			serverAddress = item.ServerAddress
			break
		}
	}
	if serverAddress != "" {
		if c.Spec.SecretRef == nil {
			glog.Infof("didn't find secretRef for cluster %s. Trying insecure access", c.Name)
			clusterConfig, err = clientcmd.BuildConfigFromFlags(serverAddress, "")
		} else {
			kubeconfigGetter := KubeconfigGetterForCluster(c)
			clusterConfig, err = clientcmd.BuildConfigFromKubeconfigGetter(serverAddress, kubeconfigGetter)
		}
		if err != nil {
			return nil, err
		}
		clusterConfig.QPS = KubeAPIQPS
		clusterConfig.Burst = KubeAPIBurst
	}
	return clusterConfig, nil
}

func NewClusterClientSet(c *federation_v1alpha1.Cluster) (*ClusterClient, error) {
	var serverAddress string
	hostIP, err := utilnet.ChooseHostInterface()
	if err != nil {
		return nil, err
	}

	for _, item := range c.Spec.ServerAddressByClientCIDRs {
		_, cidrnet, err := net.ParseCIDR(item.ClientCIDR)
		if err != nil {
			return nil, err
		}
		myaddr := net.ParseIP(hostIP.String())
		if cidrnet.Contains(myaddr) == true {
			serverAddress = item.ServerAddress
			break
		}
	}
	var clusterClientSet = ClusterClient{}
	if serverAddress != "" {
		clusterConfig, err := clientcmd.BuildConfigFromFlags(serverAddress, "")
		if err != nil {
			return nil, err
		}
		clusterConfig.QPS = KubeAPIQPS
		clusterConfig.Burst = KubeAPIBurst
		clusterClientSet.discoveryClient = discovery.NewDiscoveryClientForConfigOrDie((restclient.AddUserAgent(clusterConfig, UserAgentName)))
		if clusterClientSet.discoveryClient == nil {
			return nil, nil
		}
	}
	return &clusterClientSet, err
}

func createClient(s *options.SchedulerServer) (*clientset.Clientset, error) {
	kubeconfig, err := clientcmd.BuildConfigFromFlags(s.Master, s.Kubeconfig)
	if err != nil {
		return nil, fmt.Errorf("unable to build config from flags: %v", err)
	}

	kubeconfig.ContentType = s.ContentType
	// Override kubeconfig qps/burst settings from flags
	kubeconfig.QPS = s.KubeAPIQPS
	kubeconfig.Burst = int(s.KubeAPIBurst)

	cli, err := clientset.NewForConfig(restclient.AddUserAgent(kubeconfig, "leader-election"))
	if err != nil {
		return nil, fmt.Errorf("invalid API configuration: %v", err)
	}
	return cli, nil
}

func newClusterClientset(c *federation.Cluster) (*clientset.Clientset, error) {
	clusterConfig, err := clientcmd.BuildConfigFromFlags(c.Spec.ServerAddressByClientCIDRs[0].ServerAddress, "")
	if err != nil {
		return nil, err
	}
	clusterConfig.QPS = KubeAPIQPS
	clusterConfig.Burst = KubeAPIBurst
	clientset := clientset.NewForConfigOrDie(restclient.AddUserAgent(clusterConfig, UserAgentName))
	return clientset, nil
}

// TODO(jdef): hacked from plugin/cmd/kube-scheduler/app/server.go
func (s *SchedulerServer) createAPIServerClientConfig() (*restclient.Config, error) {
	kubeconfig, err := clientcmd.BuildConfigFromFlags(s.apiServerList[0], s.kubeconfig)
	if err != nil {
		return nil, err
	}

	// Override kubeconfig qps/burst settings from flags
	kubeconfig.QPS = s.kubeAPIQPS
	kubeconfig.Burst = s.kubeAPIBurst
	return kubeconfig, nil
}

// Run runs the specified SchedulerServer.  This should never exit.
func (s *SchedulerServer) Run(_ []string) error {
	kubeconfig, err := clientcmd.BuildConfigFromFlags(s.Master, s.Kubeconfig)
	if err != nil {
		return err
	}

	// Override kubeconfig qps/burst settings from flags
	kubeconfig.QPS = s.KubeAPIQPS
	kubeconfig.Burst = s.KubeAPIBurst

	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 {
			mux.HandleFunc("/debug/pprof/", pprof.Index)
			mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
			mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
		}
		mux.Handle("/metrics", prometheus.Handler())

		server := &http.Server{
			Addr:    net.JoinHostPort(s.Address.String(), strconv.Itoa(s.Port)),
			Handler: mux,
		}
		glog.Fatal(server.ListenAndServe())
	}()

	configFactory := factory.NewConfigFactory(kubeClient, util.NewTokenBucketRateLimiter(s.BindPodsQPS, s.BindPodsBurst))
	config, err := s.createConfig(configFactory)
	if err != nil {
		glog.Fatalf("Failed to create scheduler configuration: %v", err)
	}

	eventBroadcaster := record.NewBroadcaster()
	config.Recorder = eventBroadcaster.NewRecorder(api.EventSource{Component: "scheduler"})
	eventBroadcaster.StartLogging(glog.Infof)
	eventBroadcaster.StartRecordingToSink(kubeClient.Events(""))

	sched := scheduler.New(config)
	sched.Run()

	select {}
}

func TestUpdateClusterStatusOK(t *testing.T) {
	clusterName := "foobarCluster"
	// create dummy httpserver
	testClusterServer := httptest.NewServer(createHttptestFakeHandlerForCluster(true))
	defer testClusterServer.Close()
	federationCluster := newCluster(clusterName, testClusterServer.URL)
	federationClusterList := newClusterList(federationCluster)

	testFederationServer := httptest.NewServer(createHttptestFakeHandlerForFederation(federationClusterList, true))
	defer testFederationServer.Close()

	restClientCfg, err := clientcmd.BuildConfigFromFlags(testFederationServer.URL, "")
	if err != nil {
		t.Errorf("Failed to build client config")
	}
	federationClientSet := federationclientset.NewForConfigOrDie(restclient.AddUserAgent(restClientCfg, "cluster-controller"))

	// Override KubeconfigGetterForCluster to avoid having to setup service accounts and mount files with secret tokens.
	originalGetter := controllerutil.KubeconfigGetterForCluster
	controllerutil.KubeconfigGetterForCluster = func(c *federationv1beta1.Cluster) clientcmd.KubeconfigGetter {
		return func() (*clientcmdapi.Config, error) {
			return &clientcmdapi.Config{}, nil
		}
	}

	manager := NewclusterController(federationClientSet, 5)
	err = manager.UpdateClusterStatus()
	if err != nil {
		t.Errorf("Failed to Update Cluster Status: %v", err)
	}
	clusterStatus, found := manager.clusterClusterStatusMap[clusterName]
	if !found {
		t.Errorf("Failed to Update Cluster Status")
	} else {
		if (clusterStatus.Conditions[1].Status != v1.ConditionFalse) || (clusterStatus.Conditions[1].Type != federationv1beta1.ClusterOffline) {
			t.Errorf("Failed to Update Cluster Status")
		}
	}

	// Reset KubeconfigGetterForCluster
	controllerutil.KubeconfigGetterForCluster = originalGetter
}

// Run runs the CMServer.  This should never exit.
func Run(s *options.CMServer) error {
	if c, err := configz.New("componentconfig"); err == nil {
		c.Set(s.ControllerManagerConfiguration)
	} else {
		glog.Errorf("unable to register configz: %s", err)
	}
	restClientCfg, err := clientcmd.BuildConfigFromFlags(s.Master, s.Kubeconfig)
	if err != nil {
		return err
	}

	// Override restClientCfg qps/burst settings from flags
	restClientCfg.QPS = s.APIServerQPS
	restClientCfg.Burst = s.APIServerBurst

	go func() {
		mux := http.NewServeMux()
		healthz.InstallHandler(mux)
		if s.EnableProfiling {
			mux.HandleFunc("/debug/pprof/", pprof.Index)
			mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
			mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
		}
		mux.Handle("/metrics", prometheus.Handler())

		server := &http.Server{
			Addr:    net.JoinHostPort(s.Address, strconv.Itoa(s.Port)),
			Handler: mux,
		}
		glog.Fatal(server.ListenAndServe())
	}()

	run := func() {
		err := StartControllers(s, restClientCfg)
		glog.Fatalf("error running controllers: %v", err)
		panic("unreachable")
	}
	run()
	panic("unreachable")
}

// Run runs the CMServer.  This should never exit.
func Run(s *options.CMServer) error {
	if c, err := configz.New("componentconfig"); err == nil {
		c.Set(s.KubeControllerManagerConfiguration)
	} else {
		glog.Errorf("unable to register configz: %s", err)
	}
	kubeconfig, err := clientcmd.BuildConfigFromFlags(s.Master, s.Kubeconfig)
	if err != nil {
		return err
	}

	kubeconfig.ContentConfig.ContentType = s.ContentType
	// Override kubeconfig qps/burst settings from flags
	kubeconfig.QPS = s.KubeAPIQPS
	kubeconfig.Burst = int(s.KubeAPIBurst)
	kubeClient, err := clientset.NewForConfig(restclient.AddUserAgent(kubeconfig, "controller-manager"))
	if err != nil {
		glog.Fatalf("Invalid API configuration: %v", err)
	}
	leaderElectionClient := clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "leader-election"))

	go func() {
		mux := http.NewServeMux()
		healthz.InstallHandler(mux)
		if s.EnableProfiling {
			mux.HandleFunc("/debug/pprof/", pprof.Index)
			mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
			mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
		}
		configz.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())
	}()

	eventBroadcaster := record.NewBroadcaster()
	eventBroadcaster.StartLogging(glog.Infof)
	eventBroadcaster.StartRecordingToSink(&unversionedcore.EventSinkImpl{Interface: kubeClient.Core().Events("")})
	recorder := eventBroadcaster.NewRecorder(api.EventSource{Component: "controller-manager"})

	run := func(stop <-chan struct{}) {
		rootClientBuilder := controller.SimpleControllerClientBuilder{
			ClientConfig: kubeconfig,
		}
		var clientBuilder controller.ControllerClientBuilder
		if len(s.ServiceAccountKeyFile) > 0 {
			clientBuilder = controller.SAControllerClientBuilder{
				ClientConfig: restclient.AnonymousClientConfig(kubeconfig),
				CoreClient:   kubeClient.Core(),
				Namespace:    "kube-system",
			}
		} else {
			clientBuilder = rootClientBuilder
		}

		err := StartControllers(s, kubeconfig, rootClientBuilder, clientBuilder, stop, recorder)
		glog.Fatalf("error running controllers: %v", err)
		panic("unreachable")
	}

	if !s.LeaderElection.LeaderElect {
		run(nil)
		panic("unreachable")
	}

	id, err := os.Hostname()
	if err != nil {
		return err
	}

	// TODO: enable other lock types
	rl := resourcelock.EndpointsLock{
		EndpointsMeta: api.ObjectMeta{
			Namespace: "kube-system",
			Name:      "kube-controller-manager",
		},
		Client: leaderElectionClient,
		LockConfig: resourcelock.ResourceLockConfig{
			Identity:      id,
			EventRecorder: recorder,
		},
	}

	leaderelection.RunOrDie(leaderelection.LeaderElectionConfig{
		Lock:          &rl,
		LeaseDuration: s.LeaderElection.LeaseDuration.Duration,
		RenewDeadline: s.LeaderElection.RenewDeadline.Duration,
		RetryPeriod:   s.LeaderElection.RetryPeriod.Duration,
		Callbacks: leaderelection.LeaderCallbacks{
			OnStartedLeading: run,
			OnStoppedLeading: func() {
				glog.Fatalf("leaderelection lost")
			},
		},
	})
//.........這裏部分代碼省略.........

// Run runs the specified SchedulerServer.  This should never exit.
func Run(s *options.SchedulerServer) error {
	if c, err := configz.New("componentconfig"); err == nil {
		c.Set(s.KubeSchedulerConfiguration)
	} else {
		glog.Errorf("unable to register configz: %s", err)
	}
	kubeconfig, err := clientcmd.BuildConfigFromFlags(s.Master, s.Kubeconfig)
	if err != nil {
		return err
	}

	kubeconfig.ContentType = s.ContentType
	// Override kubeconfig qps/burst settings from flags
	kubeconfig.QPS = s.KubeAPIQPS
	kubeconfig.Burst = int(s.KubeAPIBurst)

	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 {
			mux.HandleFunc("/debug/pprof/", pprof.Index)
			mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
			mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
		}
		configz.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())
	}()

	configFactory := factory.NewConfigFactory(kubeClient, s.SchedulerName)
	config, err := createConfig(s, configFactory)

	if err != nil {
		glog.Fatalf("Failed to create scheduler configuration: %v", err)
	}

	eventBroadcaster := record.NewBroadcaster()
	config.Recorder = eventBroadcaster.NewRecorder(api.EventSource{Component: s.SchedulerName})
	eventBroadcaster.StartLogging(glog.Infof)
	eventBroadcaster.StartRecordingToSink(kubeClient.Events(""))

	sched := scheduler.New(config)

	run := func(_ <-chan struct{}) {
		sched.Run()
		select {}
	}

	if !s.LeaderElection.LeaderElect {
		run(nil)
		glog.Fatal("this statement is unreachable")
		panic("unreachable")
	}

	id, err := os.Hostname()
	if err != nil {
		return err
	}

	leaderelection.RunOrDie(leaderelection.LeaderElectionConfig{
		EndpointsMeta: api.ObjectMeta{
			Namespace: "kube-system",
			Name:      "kube-scheduler",
		},
		Client:        kubeClient,
		Identity:      id,
		EventRecorder: config.Recorder,
		LeaseDuration: s.LeaderElection.LeaseDuration.Duration,
		RenewDeadline: s.LeaderElection.RenewDeadline.Duration,
		RetryPeriod:   s.LeaderElection.RetryPeriod.Duration,
		Callbacks: leaderelection.LeaderCallbacks{
			OnStartedLeading: run,
			OnStoppedLeading: func() {
				glog.Fatalf("lost master")
			},
		},
	})

	glog.Fatal("this statement is unreachable")
	panic("unreachable")
}

// Run runs the CMServer.  This should never exit.
func Run(s *options.CMServer) error {
	if c, err := configz.New("componentconfig"); err == nil {
		c.Set(s.KubeControllerManagerConfiguration)
	} else {
		glog.Errorf("unable to register configz: %s", err)
	}
	kubeconfig, err := clientcmd.BuildConfigFromFlags(s.Master, s.Kubeconfig)
	if err != nil {
		return err
	}

	// Override kubeconfig qps/burst settings from flags
	kubeconfig.QPS = s.KubeAPIQPS
	kubeconfig.Burst = s.KubeAPIBurst

	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 {
			mux.HandleFunc("/debug/pprof/", pprof.Index)
			mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
			mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
		}
		mux.Handle("/metrics", prometheus.Handler())

		server := &http.Server{
			Addr:    net.JoinHostPort(s.Address, strconv.Itoa(s.Port)),
			Handler: mux,
		}
		glog.Fatal(server.ListenAndServe())
	}()

	run := func(stop <-chan struct{}) {
		err := StartControllers(s, kubeClient, kubeconfig, stop)
		glog.Fatalf("error running controllers: %v", err)
		panic("unreachable")
	}

	if !s.LeaderElection.LeaderElect {
		run(nil)
		panic("unreachable")
	}

	eventBroadcaster := record.NewBroadcaster()
	eventBroadcaster.StartLogging(glog.Infof)
	eventBroadcaster.StartRecordingToSink(kubeClient.Events(""))
	recorder := eventBroadcaster.NewRecorder(api.EventSource{Component: "controller-manager"})

	id, err := os.Hostname()
	if err != nil {
		return err
	}

	leaderelection.RunOrDie(leaderelection.LeaderElectionConfig{
		EndpointsMeta: api.ObjectMeta{
			Namespace: "kube-system",
			Name:      "kube-controller-manager",
		},
		Client:        kubeClient,
		Identity:      id,
		EventRecorder: recorder,
		LeaseDuration: s.LeaderElection.LeaseDuration.Duration,
		RenewDeadline: s.LeaderElection.RenewDeadline.Duration,
		RetryPeriod:   s.LeaderElection.RetryPeriod.Duration,
		Callbacks: leaderelection.LeaderCallbacks{
			OnStartedLeading: run,
			OnStoppedLeading: func() {
				glog.Fatalf("leaderelection lost")
			},
		},
	})
	panic("unreachable")
}

// Run runs the CMServer.  This should never exit.
func Run(s *options.CMServer) error {
	glog.Infof("%+v", version.Get())
	if c, err := configz.New("componentconfig"); err == nil {
		c.Set(s.ControllerManagerConfiguration)
	} else {
		glog.Errorf("unable to register configz: %s", err)
	}

	// If s.Kubeconfig flag is empty, try with the deprecated name in 1.5.
	// TODO(madhusudancs): Remove this in 1.6.
	var restClientCfg *restclient.Config
	var err error
	if len(s.Kubeconfig) <= 0 {
		restClientCfg, err = restClientConfigFromSecret(s.Master)
		if err != nil {
			return err
		}
	} else {
		// Create the config to talk to federation-apiserver.
		restClientCfg, err = clientcmd.BuildConfigFromFlags(s.Master, s.Kubeconfig)
		if err != nil || restClientCfg == nil {
			// Retry with the deprecated name in 1.5.
			// TODO(madhusudancs): Remove this in 1.6.
			glog.V(2).Infof("Couldn't build the rest client config from flags: %v", err)
			glog.V(2).Infof("Trying with deprecated secret: %s", DeprecatedKubeconfigSecretName)
			restClientCfg, err = restClientConfigFromSecret(s.Master)
			if err != nil {
				return err
			}
		}
	}

	// Override restClientCfg qps/burst settings from flags
	restClientCfg.QPS = s.APIServerQPS
	restClientCfg.Burst = s.APIServerBurst

	go func() {
		mux := http.NewServeMux()
		healthz.InstallHandler(mux)
		if s.EnableProfiling {
			mux.HandleFunc("/debug/pprof/", pprof.Index)
			mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
			mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
		}
		mux.Handle("/metrics", prometheus.Handler())

		server := &http.Server{
			Addr:    net.JoinHostPort(s.Address, strconv.Itoa(s.Port)),
			Handler: mux,
		}
		glog.Fatal(server.ListenAndServe())
	}()

	run := func() {
		err := StartControllers(s, restClientCfg)
		glog.Fatalf("error running controllers: %v", err)
		panic("unreachable")
	}
	run()
	panic("unreachable")
}

// Run runs the CMServer.  This should never exit.
func (s *CMServer) Run(_ []string) error {
	kubeconfig, err := clientcmd.BuildConfigFromFlags(s.Master, s.Kubeconfig)
	if err != nil {
		return err
	}

	// Override kubeconfig qps/burst settings from flags
	kubeconfig.QPS = s.KubeAPIQPS
	kubeconfig.Burst = s.KubeAPIBurst

	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 {
			mux.HandleFunc("/debug/pprof/", pprof.Index)
			mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
			mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
		}
		mux.Handle("/metrics", prometheus.Handler())

		server := &http.Server{
			Addr:    net.JoinHostPort(s.Address.String(), strconv.Itoa(s.Port)),
			Handler: mux,
		}
		glog.Fatal(server.ListenAndServe())
	}()

	go endpointcontroller.NewEndpointController(clientForUserAgentOrDie(*kubeconfig, "endpoint-controller"), s.ResyncPeriod).
		Run(s.ConcurrentEndpointSyncs, util.NeverStop)

	go replicationcontroller.NewReplicationManager(
		clientForUserAgentOrDie(*kubeconfig, "replication-controller"),
		s.ResyncPeriod,
		replicationcontroller.BurstReplicas,
	).Run(s.ConcurrentRCSyncs, util.NeverStop)

	if s.TerminatedPodGCThreshold > 0 {
		go gc.New(clientForUserAgentOrDie(*kubeconfig, "garbage-collector"), s.ResyncPeriod, s.TerminatedPodGCThreshold).
			Run(util.NeverStop)
	}

	cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
	if err != nil {
		glog.Fatalf("Cloud provider could not be initialized: %v", err)
	}

	nodeController := nodecontroller.NewNodeController(cloud, clientForUserAgentOrDie(*kubeconfig, "node-controller"),
		s.PodEvictionTimeout, util.NewTokenBucketRateLimiter(s.DeletingPodsQps, s.DeletingPodsBurst),
		util.NewTokenBucketRateLimiter(s.DeletingPodsQps, s.DeletingPodsBurst),
		s.NodeMonitorGracePeriod, s.NodeStartupGracePeriod, s.NodeMonitorPeriod, &s.ClusterCIDR, s.AllocateNodeCIDRs)
	nodeController.Run(s.NodeSyncPeriod)

	serviceController := servicecontroller.New(cloud, clientForUserAgentOrDie(*kubeconfig, "service-controller"), s.ClusterName)
	if err := serviceController.Run(s.ServiceSyncPeriod, s.NodeSyncPeriod); err != nil {
		glog.Errorf("Failed to start service controller: %v", err)
	}

	if s.AllocateNodeCIDRs {
		if cloud == nil {
			glog.Warning("allocate-node-cidrs is set, but no cloud provider specified. Will not manage routes.")
		} else if routes, ok := cloud.Routes(); !ok {
			glog.Warning("allocate-node-cidrs is set, but cloud provider does not support routes. Will not manage routes.")
		} else {
			routeController := routecontroller.New(routes, clientForUserAgentOrDie(*kubeconfig, "route-controller"), s.ClusterName, &s.ClusterCIDR)
			routeController.Run(s.NodeSyncPeriod)
		}
	} else {
		glog.Infof("allocate-node-cidrs set to %v, node controller not creating routes", s.AllocateNodeCIDRs)
	}

	go resourcequotacontroller.NewResourceQuotaController(
		clientForUserAgentOrDie(*kubeconfig, "resourcequota-controller"),
		controller.StaticResyncPeriodFunc(s.ResourceQuotaSyncPeriod)).Run(s.ConcurrentResourceQuotaSyncs, util.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 = client.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)
	}

//.........這裏部分代碼省略.........

// Run runs the specified SchedulerServer.  This should never exit.
func Run(s *options.SchedulerServer) error {
	if c, err := configz.New("componentconfig"); err == nil {
		c.Set(s.KubeSchedulerConfiguration)
	} else {
		glog.Errorf("unable to register configz: %s", err)
	}
	kubeconfig, err := clientcmd.BuildConfigFromFlags(s.Master, s.Kubeconfig)
	if err != nil {
		glog.Errorf("unable to build config from flags: %v", err)
		return err
	}

	kubeconfig.ContentType = s.ContentType
	// Override kubeconfig qps/burst settings from flags
	kubeconfig.QPS = s.KubeAPIQPS
	kubeconfig.Burst = int(s.KubeAPIBurst)

	if err != nil {
		glog.Fatalf("Invalid API configuration: %v", err)
	}
	leaderElectionClient, err := clientset.NewForConfig(restclient.AddUserAgent(kubeconfig, "leader-election"))
	if err != nil {
		glog.Fatalf("Invalid API configuration: %v", err)
	}

	go func() {
		mux := http.NewServeMux()
		healthz.InstallHandler(mux)
		if s.EnableProfiling {
			mux.HandleFunc("/debug/pprof/", pprof.Index)
			mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
			mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
			if s.EnableContentionProfiling {
				goruntime.SetBlockProfileRate(1)
			}
		}
		configz.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())
	}()

	configFactory := factory.NewConfigFactory(leaderElectionClient, s.SchedulerName, s.HardPodAffinitySymmetricWeight, s.FailureDomains)
	config, err := createConfig(s, configFactory)

	if err != nil {
		glog.Fatalf("Failed to create scheduler configuration: %v", err)
	}

	eventBroadcaster := record.NewBroadcaster()
	config.Recorder = eventBroadcaster.NewRecorder(v1.EventSource{Component: s.SchedulerName})
	eventBroadcaster.StartLogging(glog.Infof)
	eventBroadcaster.StartRecordingToSink(&v1core.EventSinkImpl{Interface: leaderElectionClient.Core().Events("")})

	sched := scheduler.New(config)

	run := func(_ <-chan struct{}) {
		sched.Run()
		select {}
	}

	if !s.LeaderElection.LeaderElect {
		run(nil)
		glog.Fatal("this statement is unreachable")
		panic("unreachable")
	}

	id, err := os.Hostname()
	if err != nil {
		glog.Errorf("unable to get hostname: %v", err)
		return err
	}

	// TODO: enable other lock types
	rl := resourcelock.EndpointsLock{
		EndpointsMeta: v1.ObjectMeta{
			Namespace: "kube-system",
			Name:      "kube-scheduler",
		},
		Client: leaderElectionClient,
		LockConfig: resourcelock.ResourceLockConfig{
			Identity:      id,
			EventRecorder: config.Recorder,
		},
	}

	leaderelection.RunOrDie(leaderelection.LeaderElectionConfig{
		Lock:          &rl,
		LeaseDuration: s.LeaderElection.LeaseDuration.Duration,
		RenewDeadline: s.LeaderElection.RenewDeadline.Duration,
		RetryPeriod:   s.LeaderElection.RetryPeriod.Duration,
		Callbacks: leaderelection.LeaderCallbacks{
			OnStartedLeading: run,
			OnStoppedLeading: func() {
				glog.Fatalf("lost master")
//.........這裏部分代碼省略.........