vendor files

vendor/k8s.io/kubernetes/cmd/cloud-controller-manager/app/BUILD

@@ -0,0 +1,53 @@
+package(default_visibility = ["//visibility:public"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = ["controllermanager.go"],
+    importpath = "k8s.io/kubernetes/cmd/cloud-controller-manager/app",
+    deps = [
+        "//cmd/cloud-controller-manager/app/options:go_default_library",
+        "//pkg/api/legacyscheme:go_default_library",
+        "//pkg/cloudprovider:go_default_library",
+        "//pkg/controller:go_default_library",
+        "//pkg/controller/cloud:go_default_library",
+        "//pkg/controller/route:go_default_library",
+        "//pkg/controller/service:go_default_library",
+        "//pkg/util/configz:go_default_library",
+        "//vendor/github.com/golang/glog:go_default_library",
+        "//vendor/github.com/prometheus/client_golang/prometheus:go_default_library",
+        "//vendor/github.com/spf13/cobra:go_default_library",
+        "//vendor/github.com/spf13/pflag:go_default_library",
+        "//vendor/k8s.io/api/core/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/wait:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/server/healthz:go_default_library",
+        "//vendor/k8s.io/client-go/informers:go_default_library",
+        "//vendor/k8s.io/client-go/kubernetes:go_default_library",
+        "//vendor/k8s.io/client-go/kubernetes/typed/core/v1:go_default_library",
+        "//vendor/k8s.io/client-go/rest:go_default_library",
+        "//vendor/k8s.io/client-go/tools/clientcmd:go_default_library",
+        "//vendor/k8s.io/client-go/tools/leaderelection:go_default_library",
+        "//vendor/k8s.io/client-go/tools/leaderelection/resourcelock:go_default_library",
+        "//vendor/k8s.io/client-go/tools/record:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [
+        ":package-srcs",
+        "//cmd/cloud-controller-manager/app/options:all-srcs",
+    ],
+    tags = ["automanaged"],
+)

vendor/k8s.io/kubernetes/cmd/cloud-controller-manager/app/controllermanager.go

@@ -0,0 +1,303 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package app
+
+import (
+	"math/rand"
+	"net"
+	"net/http"
+	"net/http/pprof"
+	"os"
+	goruntime "runtime"
+	"strconv"
+	"strings"
+	"time"
+
+	"k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/apiserver/pkg/server/healthz"
+	"k8s.io/client-go/informers"
+	"k8s.io/client-go/kubernetes"
+	clientset "k8s.io/client-go/kubernetes"
+	v1core "k8s.io/client-go/kubernetes/typed/core/v1"
+	restclient "k8s.io/client-go/rest"
+	"k8s.io/client-go/tools/clientcmd"
+	"k8s.io/client-go/tools/leaderelection"
+	"k8s.io/client-go/tools/leaderelection/resourcelock"
+	"k8s.io/client-go/tools/record"
+	"k8s.io/kubernetes/cmd/cloud-controller-manager/app/options"
+	"k8s.io/kubernetes/pkg/api/legacyscheme"
+	"k8s.io/kubernetes/pkg/cloudprovider"
+	"k8s.io/kubernetes/pkg/controller"
+	cloudcontrollers "k8s.io/kubernetes/pkg/controller/cloud"
+	routecontroller "k8s.io/kubernetes/pkg/controller/route"
+	servicecontroller "k8s.io/kubernetes/pkg/controller/service"
+	"k8s.io/kubernetes/pkg/util/configz"
+
+	"github.com/golang/glog"
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
+)
+
+const (
+	// ControllerStartJitter is the jitter value used when starting controller managers.
+	ControllerStartJitter = 1.0
+)
+
+// NewCloudControllerManagerCommand creates a *cobra.Command object with default parameters
+func NewCloudControllerManagerCommand() *cobra.Command {
+	s := options.NewCloudControllerManagerServer()
+	s.AddFlags(pflag.CommandLine)
+	cmd := &cobra.Command{
+		Use: "cloud-controller-manager",
+		Long: `The Cloud controller manager is a daemon that embeds
+the cloud specific control loops shipped with Kubernetes.`,
+		Run: func(cmd *cobra.Command, args []string) {
+		},
+	}
+
+	return cmd
+}
+
+// resyncPeriod computes the time interval a shared informer waits before resyncing with the api server
+func resyncPeriod(s *options.CloudControllerManagerServer) func() time.Duration {
+	return func() time.Duration {
+		factor := rand.Float64() + 1
+		return time.Duration(float64(s.MinResyncPeriod.Nanoseconds()) * factor)
+	}
+}
+
+// Run runs the ExternalCMServer.  This should never exit.
+func Run(s *options.CloudControllerManagerServer) error {
+	if s.CloudProvider == "" {
+		glog.Fatalf("--cloud-provider cannot be empty")
+	}
+
+	cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
+	if err != nil {
+		glog.Fatalf("Cloud provider could not be initialized: %v", err)
+	}
+
+	if cloud.HasClusterID() == false {
+		if s.AllowUntaggedCloud == true {
+			glog.Warning("detected a cluster without a ClusterID.  A ClusterID will be required in the future.  Please tag your cluster to avoid any future issues")
+		} else {
+			glog.Fatalf("no ClusterID found.  A ClusterID is required for the cloud provider to function properly.  This check can be bypassed by setting the allow-untagged-cloud option")
+		}
+	}
+
+	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
+	}
+
+	// Set the ContentType of the requests from kube client
+	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, "cloud-controller-manager"))
+	if err != nil {
+		glog.Fatalf("Invalid API configuration: %v", err)
+	}
+	leaderElectionClient := kubernetes.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "leader-election"))
+
+	// Start the external controller manager server
+	go startHTTP(s)
+
+	recorder := createRecorder(kubeClient)
+
+	run := func(stop <-chan struct{}) {
+		rootClientBuilder := controller.SimpleControllerClientBuilder{
+			ClientConfig: kubeconfig,
+		}
+		var clientBuilder controller.ControllerClientBuilder
+		if s.UseServiceAccountCredentials {
+			clientBuilder = controller.SAControllerClientBuilder{
+				ClientConfig:         restclient.AnonymousClientConfig(kubeconfig),
+				CoreClient:           kubeClient.CoreV1(),
+				AuthenticationClient: kubeClient.Authentication(),
+				Namespace:            "kube-system",
+			}
+		} else {
+			clientBuilder = rootClientBuilder
+		}
+
+		err := StartControllers(s, kubeconfig, clientBuilder, stop, recorder, cloud)
+		glog.Fatalf("error running controllers: %v", err)
+		panic("unreachable")
+	}
+
+	if !s.LeaderElection.LeaderElect {
+		run(nil)
+		panic("unreachable")
+	}
+
+	// Identity used to distinguish between multiple cloud controller manager instances
+	id, err := os.Hostname()
+	if err != nil {
+		return err
+	}
+
+	// Lock required for leader election
+	rl, err := resourcelock.New(s.LeaderElection.ResourceLock,
+		"kube-system",
+		"cloud-controller-manager",
+		leaderElectionClient.CoreV1(),
+		resourcelock.ResourceLockConfig{
+			Identity:      id + "-external-cloud-controller",
+			EventRecorder: recorder,
+		})
+	if err != nil {
+		glog.Fatalf("error creating lock: %v", err)
+	}
+
+	// Try and become the leader and start cloud controller manager loops
+	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")
+			},
+		},
+	})
+	panic("unreachable")
+}
+
+// StartControllers starts the cloud specific controller loops.
+func StartControllers(s *options.CloudControllerManagerServer, kubeconfig *restclient.Config, clientBuilder controller.ControllerClientBuilder, stop <-chan struct{}, recorder record.EventRecorder, cloud cloudprovider.Interface) error {
+	// Function to build the kube client object
+	client := func(serviceAccountName string) clientset.Interface {
+		return clientBuilder.ClientOrDie(serviceAccountName)
+	}
+
+	if cloud != nil {
+		// Initialize the cloud provider with a reference to the clientBuilder
+		cloud.Initialize(clientBuilder)
+	}
+
+	versionedClient := client("shared-informers")
+	sharedInformers := informers.NewSharedInformerFactory(versionedClient, resyncPeriod(s)())
+
+	// Start the CloudNodeController
+	nodeController := cloudcontrollers.NewCloudNodeController(
+		sharedInformers.Core().V1().Nodes(),
+		client("cloud-node-controller"), cloud,
+		s.NodeMonitorPeriod.Duration,
+		s.NodeStatusUpdateFrequency.Duration)
+
+	nodeController.Run()
+	time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
+
+	// Start the PersistentVolumeLabelController
+	pvlController := cloudcontrollers.NewPersistentVolumeLabelController(client("pvl-controller"), cloud)
+	threads := 5
+	go pvlController.Run(threads, stop)
+	time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
+
+	// Start the service controller
+	serviceController, err := servicecontroller.New(
+		cloud,
+		client("service-controller"),
+		sharedInformers.Core().V1().Services(),
+		sharedInformers.Core().V1().Nodes(),
+		s.ClusterName,
+	)
+	if err != nil {
+		glog.Errorf("Failed to start service controller: %v", err)
+	} else {
+		go serviceController.Run(stop, int(s.ConcurrentServiceSyncs))
+		time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
+	}
+
+	// If CIDRs should be allocated for pods and set on the CloudProvider, then start the route controller
+	if s.AllocateNodeCIDRs && s.ConfigureCloudRoutes {
+		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 {
+			var clusterCIDR *net.IPNet
+			if len(strings.TrimSpace(s.ClusterCIDR)) != 0 {
+				_, clusterCIDR, err = net.ParseCIDR(s.ClusterCIDR)
+				if err != nil {
+					glog.Warningf("Unsuccessful parsing of cluster CIDR %v: %v", s.ClusterCIDR, err)
+				}
+			}
+
+			routeController := routecontroller.New(routes, client("route-controller"), sharedInformers.Core().V1().Nodes(), s.ClusterName, clusterCIDR)
+			go routeController.Run(stop, s.RouteReconciliationPeriod.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)
+	}
+
+	// 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.
+	err = wait.PollImmediate(time.Second, 10*time.Second, func() (bool, error) {
+		if _, 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)
+	}
+
+	sharedInformers.Start(stop)
+
+	select {}
+}
+
+func startHTTP(s *options.CloudControllerManagerServer) {
+	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.HandleFunc("/debug/pprof/trace", pprof.Trace)
+		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())
+}
+
+func createRecorder(kubeClient *clientset.Clientset) record.EventRecorder {
+	eventBroadcaster := record.NewBroadcaster()
+	eventBroadcaster.StartLogging(glog.Infof)
+	eventBroadcaster.StartRecordingToSink(&v1core.EventSinkImpl{Interface: v1core.New(kubeClient.CoreV1().RESTClient()).Events("")})
+	return eventBroadcaster.NewRecorder(legacyscheme.Scheme, v1.EventSource{Component: "cloud-controller-manager"})
+}

vendor/k8s.io/kubernetes/cmd/cloud-controller-manager/app/options/BUILD

@@ -0,0 +1,48 @@
+package(default_visibility = ["//visibility:public"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+    "go_test",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = ["options.go"],
+    importpath = "k8s.io/kubernetes/cmd/cloud-controller-manager/app/options",
+    deps = [
+        "//pkg/apis/componentconfig:go_default_library",
+        "//pkg/client/leaderelectionconfig:go_default_library",
+        "//pkg/features:go_default_library",
+        "//pkg/master/ports:go_default_library",
+        "//vendor/github.com/spf13/pflag:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/util/feature:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["options_test.go"],
+    importpath = "k8s.io/kubernetes/cmd/cloud-controller-manager/app/options",
+    library = ":go_default_library",
+    deps = [
+        "//pkg/apis/componentconfig:go_default_library",
+        "//vendor/github.com/spf13/pflag:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/diff:go_default_library",
+    ],
+)

vendor/k8s.io/kubernetes/cmd/cloud-controller-manager/app/options/options.go

@@ -0,0 +1,104 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package options
+
+import (
+	"time"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	utilfeature "k8s.io/apiserver/pkg/util/feature"
+	"k8s.io/kubernetes/pkg/apis/componentconfig"
+	"k8s.io/kubernetes/pkg/client/leaderelectionconfig"
+	"k8s.io/kubernetes/pkg/master/ports"
+
+	// add the kubernetes feature gates
+	_ "k8s.io/kubernetes/pkg/features"
+
+	"github.com/spf13/pflag"
+)
+
+// CloudControllerManagerServer is the main context object for the controller manager.
+type CloudControllerManagerServer struct {
+	componentconfig.KubeControllerManagerConfiguration
+
+	Master     string
+	Kubeconfig string
+
+	// NodeStatusUpdateFrequency is the frequency at which the controller updates nodes' status
+	NodeStatusUpdateFrequency metav1.Duration
+}
+
+// NewCloudControllerManagerServer creates a new ExternalCMServer with a default config.
+func NewCloudControllerManagerServer() *CloudControllerManagerServer {
+	s := CloudControllerManagerServer{
+		// Part of these default values also present in 'cmd/kube-controller-manager/app/options/options.go'.
+		// Please keep them in sync when doing update.
+		KubeControllerManagerConfiguration: componentconfig.KubeControllerManagerConfiguration{
+			Port:                      ports.CloudControllerManagerPort,
+			Address:                   "0.0.0.0",
+			ConcurrentServiceSyncs:    1,
+			MinResyncPeriod:           metav1.Duration{Duration: 12 * time.Hour},
+			NodeMonitorPeriod:         metav1.Duration{Duration: 5 * time.Second},
+			ClusterName:               "kubernetes",
+			ConfigureCloudRoutes:      true,
+			ContentType:               "application/vnd.kubernetes.protobuf",
+			KubeAPIQPS:                20.0,
+			KubeAPIBurst:              30,
+			LeaderElection:            leaderelectionconfig.DefaultLeaderElectionConfiguration(),
+			ControllerStartInterval:   metav1.Duration{Duration: 0 * time.Second},
+			RouteReconciliationPeriod: metav1.Duration{Duration: 10 * time.Second},
+		},
+		NodeStatusUpdateFrequency: metav1.Duration{Duration: 5 * time.Minute},
+	}
+	s.LeaderElection.LeaderElect = true
+	return &s
+}
+
+// AddFlags adds flags for a specific ExternalCMServer to the specified FlagSet
+func (s *CloudControllerManagerServer) AddFlags(fs *pflag.FlagSet) {
+	fs.Int32Var(&s.Port, "port", s.Port, "The port that the cloud-controller-manager's http service runs on.")
+	fs.Var(componentconfig.IPVar{Val: &s.Address}, "address", "The IP address to serve on (set to 0.0.0.0 for all interfaces).")
+	fs.StringVar(&s.CloudProvider, "cloud-provider", s.CloudProvider, "The provider of cloud services. Cannot be empty.")
+	fs.StringVar(&s.CloudConfigFile, "cloud-config", s.CloudConfigFile, "The path to the cloud provider configuration file. Empty string for no configuration file.")
+	fs.BoolVar(&s.AllowUntaggedCloud, "allow-untagged-cloud", false, "Allow the cluster to run without the cluster-id on cloud instances. This is a legacy mode of operation and a cluster-id will be required in the future.")
+	fs.MarkDeprecated("allow-untagged-cloud", "This flag is deprecated and will be removed in a future release. A cluster-id will be required on cloud instances.")
+	fs.DurationVar(&s.MinResyncPeriod.Duration, "min-resync-period", s.MinResyncPeriod.Duration, "The resync period in reflectors will be random between MinResyncPeriod and 2*MinResyncPeriod.")
+	fs.DurationVar(&s.NodeMonitorPeriod.Duration, "node-monitor-period", s.NodeMonitorPeriod.Duration,
+		"The period for syncing NodeStatus in NodeController.")
+	fs.DurationVar(&s.NodeStatusUpdateFrequency.Duration, "node-status-update-frequency", s.NodeStatusUpdateFrequency.Duration, "Specifies how often the controller updates nodes' status.")
+	// TODO: remove --service-account-private-key-file 6 months after 1.8 is released (~1.10)
+	fs.StringVar(&s.ServiceAccountKeyFile, "service-account-private-key-file", s.ServiceAccountKeyFile, "Filename containing a PEM-encoded private RSA or ECDSA key used to sign service account tokens.")
+	fs.MarkDeprecated("service-account-private-key-file", "This flag is currently no-op and will be deleted.")
+	fs.BoolVar(&s.UseServiceAccountCredentials, "use-service-account-credentials", s.UseServiceAccountCredentials, "If true, use individual service account credentials for each controller.")
+	fs.DurationVar(&s.RouteReconciliationPeriod.Duration, "route-reconciliation-period", s.RouteReconciliationPeriod.Duration, "The period for reconciling routes created for Nodes by cloud provider.")
+	fs.BoolVar(&s.ConfigureCloudRoutes, "configure-cloud-routes", true, "Should CIDRs allocated by allocate-node-cidrs be configured on the cloud provider.")
+	fs.BoolVar(&s.EnableProfiling, "profiling", true, "Enable profiling via web interface host:port/debug/pprof/.")
+	fs.BoolVar(&s.EnableContentionProfiling, "contention-profiling", false, "Enable lock contention profiling, if profiling is enabled.")
+	fs.StringVar(&s.ClusterCIDR, "cluster-cidr", s.ClusterCIDR, "CIDR Range for Pods in cluster.")
+	fs.StringVar(&s.ClusterName, "cluster-name", s.ClusterName, "The instance prefix for the cluster.")
+	fs.BoolVar(&s.AllocateNodeCIDRs, "allocate-node-cidrs", false, "Should CIDRs for Pods be allocated and set on the cloud provider.")
+	fs.StringVar(&s.Master, "master", s.Master, "The address of the Kubernetes API server (overrides any value in kubeconfig).")
+	fs.StringVar(&s.Kubeconfig, "kubeconfig", s.Kubeconfig, "Path to kubeconfig file with authorization and master location information.")
+	fs.StringVar(&s.ContentType, "kube-api-content-type", s.ContentType, "Content type of requests sent to apiserver.")
+	fs.Float32Var(&s.KubeAPIQPS, "kube-api-qps", s.KubeAPIQPS, "QPS to use while talking with kubernetes apiserver.")
+	fs.Int32Var(&s.KubeAPIBurst, "kube-api-burst", s.KubeAPIBurst, "Burst to use while talking with kubernetes apiserver.")
+	fs.DurationVar(&s.ControllerStartInterval.Duration, "controller-start-interval", s.ControllerStartInterval.Duration, "Interval between starting controller managers.")
+	fs.Int32Var(&s.ConcurrentServiceSyncs, "concurrent-service-syncs", s.ConcurrentServiceSyncs, "The number of services that are allowed to sync concurrently. Larger number = more responsive service management, but more CPU (and network) load")
+	leaderelectionconfig.BindFlags(&s.LeaderElection, fs)
+
+	utilfeature.DefaultFeatureGate.AddFlag(fs)
+}

vendor/k8s.io/kubernetes/cmd/cloud-controller-manager/app/options/options_test.go

@@ -0,0 +1,101 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package options
+
+import (
+	"reflect"
+	"testing"
+	"time"
+
+	"github.com/spf13/pflag"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/diff"
+	"k8s.io/kubernetes/pkg/apis/componentconfig"
+)
+
+func TestAddFlags(t *testing.T) {
+	f := pflag.NewFlagSet("addflagstest", pflag.ContinueOnError)
+	s := NewCloudControllerManagerServer()
+	s.AddFlags(f)
+
+	args := []string{
+		"--address=192.168.4.10",
+		"--allocate-node-cidrs=true",
+		"--cloud-config=/cloud-config",
+		"--cloud-provider=gce",
+		"--cluster-cidr=1.2.3.4/24",
+		"--cluster-name=k8s",
+		"--configure-cloud-routes=false",
+		"--contention-profiling=true",
+		"--controller-start-interval=2m",
+		"--min-resync-period=5m",
+		"--kube-api-burst=100",
+		"--kube-api-content-type=application/vnd.kubernetes.protobuf",
+		"--kube-api-qps=50.0",
+		"--kubeconfig=/kubeconfig",
+		"--leader-elect=false",
+		"--leader-elect-lease-duration=30s",
+		"--leader-elect-renew-deadline=15s",
+		"--leader-elect-resource-lock=configmap",
+		"--leader-elect-retry-period=5s",
+		"--master=192.168.4.20",
+		"--min-resync-period=8h",
+		"--port=10000",
+		"--profiling=false",
+		"--node-status-update-frequency=10m",
+		"--route-reconciliation-period=30s",
+		"--min-resync-period=100m",
+		"--use-service-account-credentials=false",
+	}
+	f.Parse(args)
+
+	expected := &CloudControllerManagerServer{
+		KubeControllerManagerConfiguration: componentconfig.KubeControllerManagerConfiguration{
+			CloudProvider:             "gce",
+			CloudConfigFile:           "/cloud-config",
+			Port:                      10000,
+			Address:                   "192.168.4.10",
+			ConcurrentServiceSyncs:    1,
+			MinResyncPeriod:           metav1.Duration{Duration: 100 * time.Minute},
+			NodeMonitorPeriod:         metav1.Duration{Duration: 5 * time.Second},
+			ClusterName:               "k8s",
+			ConfigureCloudRoutes:      false,
+			AllocateNodeCIDRs:         true,
+			ContentType:               "application/vnd.kubernetes.protobuf",
+			EnableContentionProfiling: true,
+			KubeAPIQPS:                50.0,
+			KubeAPIBurst:              100,
+			LeaderElection: componentconfig.LeaderElectionConfiguration{
+				ResourceLock:  "configmap",
+				LeaderElect:   false,
+				LeaseDuration: metav1.Duration{Duration: 30 * time.Second},
+				RenewDeadline: metav1.Duration{Duration: 15 * time.Second},
+				RetryPeriod:   metav1.Duration{Duration: 5 * time.Second},
+			},
+			ControllerStartInterval:   metav1.Duration{Duration: 2 * time.Minute},
+			RouteReconciliationPeriod: metav1.Duration{Duration: 30 * time.Second},
+			ClusterCIDR:               "1.2.3.4/24",
+		},
+		Kubeconfig: "/kubeconfig",
+		Master:     "192.168.4.20",
+		NodeStatusUpdateFrequency: metav1.Duration{Duration: 10 * time.Minute},
+	}
+	if !reflect.DeepEqual(expected, s) {
+		t.Errorf("Got different run options than expected.\nDifference detected on:\n%s", diff.ObjectReflectDiff(expected, s))
+	}
+}