func startEndpointController(ctx ControllerContext) (bool, error) {
go endpointcontroller.NewEndpointController(
ctx.InformerFactory.Pods().Informer(),
ctx.ClientBuilder.ClientOrDie("endpoint-controller"),
).Run(int(ctx.Options.ConcurrentEndpointSyncs), ctx.Stop)
return true, nil
}
func (s *CMServer) createEndpointController(client *client.Client) kmendpoint.EndpointController {
if s.UseHostPortEndpoints {
glog.V(2).Infof("Creating hostIP:hostPort endpoint controller")
return kmendpoint.NewEndpointController(client)
}
glog.V(2).Infof("Creating podIP:containerPort endpoint controller")
stockEndpointController := kendpoint.NewEndpointController(client)
return stockEndpointController
}
// RunEndpointController starts the Kubernetes replication controller sync loop
func (c *MasterConfig) RunEndpointController() {
endpoints := endpointcontroller.NewEndpointController(c.KubeClient)
go endpoints.Run(c.ControllerManager.ConcurrentEndpointSyncs, util.NeverStop)
}
func StartControllers(s *options.CMServer, kubeconfig *restclient.Config, rootClientBuilder, clientBuilder controller.ControllerClientBuilder, stop <-chan struct{}, recorder record.EventRecorder) error {
client := func(serviceAccountName string) clientset.Interface {
return rootClientBuilder.ClientOrDie(serviceAccountName)
}
discoveryClient := client("controller-discovery").Discovery()
sharedInformers := informers.NewSharedInformerFactory(client("shared-informers"), ResyncPeriod(s)())
// always start the SA token controller first using a full-power client, since it needs to mint tokens for the rest
if len(s.ServiceAccountKeyFile) > 0 {
privateKey, err := serviceaccount.ReadPrivateKey(s.ServiceAccountKeyFile)
if err != nil {
return fmt.Errorf("Error reading key for service account token controller: %v", err)
} else {
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 := certutil.ParseCertsPEM(rootCA); err != nil {
return fmt.Errorf("error parsing root-ca-file at %s: %v", s.RootCAFile, err)
}
} else {
rootCA = kubeconfig.CAData
}
go serviceaccountcontroller.NewTokensController(
rootClientBuilder.ClientOrDie("tokens-controller"),
serviceaccountcontroller.TokensControllerOptions{
TokenGenerator: serviceaccount.JWTTokenGenerator(privateKey),
RootCA: rootCA,
},
).Run(int(s.ConcurrentSATokenSyncs), wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
}
go endpointcontroller.NewEndpointController(sharedInformers.Pods().Informer(), client("endpoint-controller")).
Run(int(s.ConcurrentEndpointSyncs), wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
go replicationcontroller.NewReplicationManager(
sharedInformers.Pods().Informer(),
clientBuilder.ClientOrDie("replication-controller"),
ResyncPeriod(s),
replicationcontroller.BurstReplicas,
int(s.LookupCacheSizeForRC),
s.EnableGarbageCollector,
).Run(int(s.ConcurrentRCSyncs), wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
if s.TerminatedPodGCThreshold > 0 {
go podgc.NewPodGC(client("pod-garbage-collector"), sharedInformers.Pods().Informer(),
int(s.TerminatedPodGCThreshold)).Run(wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
if err != nil {
glog.Fatalf("Cloud provider could not be initialized: %v", err)
}
_, clusterCIDR, err := net.ParseCIDR(s.ClusterCIDR)
if err != nil {
glog.Warningf("Unsuccessful parsing of cluster CIDR %v: %v", s.ClusterCIDR, err)
}
_, serviceCIDR, err := net.ParseCIDR(s.ServiceCIDR)
if err != nil {
glog.Warningf("Unsuccessful parsing of service CIDR %v: %v", s.ServiceCIDR, err)
}
nodeController, err := nodecontroller.NewNodeController(
sharedInformers.Pods(), sharedInformers.Nodes(), sharedInformers.DaemonSets(),
cloud, client("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()
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
serviceController, err := servicecontroller.New(cloud, client("service-controller"), s.ClusterName)
if err != nil {
glog.Errorf("Failed to start service controller: %v", err)
} else {
serviceController.Run(int(s.ConcurrentServiceSyncs))
}
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
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, client("route-controller"), s.ClusterName, clusterCIDR)
routeController.Run(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)
}
resourceQuotaControllerClient := client("resourcequota-controller")
resourceQuotaRegistry := quotainstall.NewRegistry(resourceQuotaControllerClient)
groupKindsToReplenish := []unversioned.GroupKind{
api.Kind("Pod"),
api.Kind("Service"),
api.Kind("ReplicationController"),
api.Kind("PersistentVolumeClaim"),
api.Kind("Secret"),
api.Kind("ConfigMap"),
}
resourceQuotaControllerOptions := &resourcequotacontroller.ResourceQuotaControllerOptions{
KubeClient: resourceQuotaControllerClient,
ResyncPeriod: controller.StaticResyncPeriodFunc(s.ResourceQuotaSyncPeriod.Duration),
Registry: resourceQuotaRegistry,
ControllerFactory: resourcequotacontroller.NewReplenishmentControllerFactory(sharedInformers.Pods().Informer(), resourceQuotaControllerClient),
ReplenishmentResyncPeriod: ResyncPeriod(s),
GroupKindsToReplenish: groupKindsToReplenish,
}
go resourcequotacontroller.NewResourceQuotaController(resourceQuotaControllerOptions).Run(int(s.ConcurrentResourceQuotaSyncs), wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
// 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 := discoveryClient.ServerResources()
if err != nil {
glog.Fatalf("Failed to get supported resources from server: %v", err)
}
// TODO: should use a dynamic RESTMapper built from the discovery results.
restMapper := registered.RESTMapper()
// Find the list of namespaced resources via discovery that the namespace controller must manage
namespaceKubeClient := client("namespace-controller")
namespaceClientPool := dynamic.NewClientPool(restclient.AddUserAgent(kubeconfig, "namespace-controller"), restMapper, 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)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
groupVersion := "extensions/v1beta1"
resources, found := resourceMap[groupVersion]
// TODO: 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 := client("horizontal-pod-autoscaler")
metricsClient := metrics.NewHeapsterMetricsClient(
hpaClient,
metrics.DefaultHeapsterNamespace,
metrics.DefaultHeapsterScheme,
metrics.DefaultHeapsterService,
metrics.DefaultHeapsterPort,
)
go podautoscaler.NewHorizontalController(hpaClient.Core(), hpaClient.Extensions(), hpaClient.Autoscaling(), metricsClient, s.HorizontalPodAutoscalerSyncPeriod.Duration).
Run(wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
if containsResource(resources, "daemonsets") {
glog.Infof("Starting daemon set controller")
go daemon.NewDaemonSetsController(sharedInformers.DaemonSets(), sharedInformers.Pods(), sharedInformers.Nodes(), client("daemon-set-controller"), int(s.LookupCacheSizeForDaemonSet)).
Run(int(s.ConcurrentDaemonSetSyncs), wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
if containsResource(resources, "jobs") {
glog.Infof("Starting job controller")
go job.NewJobController(sharedInformers.Pods().Informer(), client("job-controller")).
Run(int(s.ConcurrentJobSyncs), wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
if containsResource(resources, "deployments") {
glog.Infof("Starting deployment controller")
go deployment.NewDeploymentController(client("deployment-controller"), ResyncPeriod(s)).
Run(int(s.ConcurrentDeploymentSyncs), wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
if containsResource(resources, "replicasets") {
glog.Infof("Starting ReplicaSet controller")
go replicaset.NewReplicaSetController(sharedInformers.Pods().Informer(), client("replicaset-controller"), ResyncPeriod(s), replicaset.BurstReplicas, int(s.LookupCacheSizeForRS), s.EnableGarbageCollector).
Run(int(s.ConcurrentRSSyncs), wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
}
groupVersion = "policy/v1alpha1"
resources, found = resourceMap[groupVersion]
glog.Infof("Attempting to start disruption controller, full resource map %+v", resourceMap)
if containsVersion(versions, groupVersion) && found {
glog.Infof("Starting %s apis", groupVersion)
if containsResource(resources, "poddisruptionbudgets") {
glog.Infof("Starting disruption controller")
go disruption.NewDisruptionController(sharedInformers.Pods().Informer(), client("disruption-controller")).Run(wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
}
groupVersion = "apps/v1alpha1"
resources, found = resourceMap[groupVersion]
glog.Infof("Attempting to start petset, full resource map %+v", resourceMap)
if containsVersion(versions, groupVersion) && found {
glog.Infof("Starting %s apis", groupVersion)
if containsResource(resources, "petsets") {
glog.Infof("Starting PetSet controller")
resyncPeriod := ResyncPeriod(s)()
go petset.NewPetSetController(
sharedInformers.Pods().Informer(),
client("petset-controller"),
resyncPeriod,
).Run(1, wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
}
groupVersion = "batch/v2alpha1"
resources, found = resourceMap[groupVersion]
if containsVersion(versions, groupVersion) && found {
glog.Infof("Starting %s apis", groupVersion)
if containsResource(resources, "scheduledjobs") {
glog.Infof("Starting scheduledjob controller")
// // TODO: this is a temp fix for allowing kubeClient list v2alpha1 sj, should switch to using clientset
kubeconfig.ContentConfig.GroupVersion = &unversioned.GroupVersion{Group: batch.GroupName, Version: "v2alpha1"}
go scheduledjob.NewScheduledJobController(client("scheduledjob-controller")).
Run(wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
} else {
glog.Infof("Not starting %s apis", groupVersion)
}
alphaProvisioner, err := 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)
}
params := persistentvolumecontroller.ControllerParameters{
KubeClient: client("persistent-volume-binder"),
SyncPeriod: s.PVClaimBinderSyncPeriod.Duration,
AlphaProvisioner: alphaProvisioner,
VolumePlugins: ProbeControllerVolumePlugins(cloud, s.VolumeConfiguration),
Cloud: cloud,
ClusterName: s.ClusterName,
EnableDynamicProvisioning: s.VolumeConfiguration.EnableDynamicProvisioning,
}
volumeController := persistentvolumecontroller.NewController(params)
volumeController.Run(wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
attachDetachController, attachDetachControllerErr :=
attachdetach.NewAttachDetachController(
client("attachdetach-controller"),
sharedInformers.Pods().Informer(),
sharedInformers.Nodes().Informer(),
sharedInformers.PersistentVolumeClaims().Informer(),
sharedInformers.PersistentVolumes().Informer(),
cloud,
ProbeAttachableVolumePlugins(s.VolumeConfiguration),
recorder)
if attachDetachControllerErr != nil {
glog.Fatalf("Failed to start attach/detach controller: %v", attachDetachControllerErr)
}
go attachDetachController.Run(wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
groupVersion = "certificates.k8s.io/v1alpha1"
resources, found = resourceMap[groupVersion]
glog.Infof("Attempting to start certificates, full resource map %+v", resourceMap)
if containsVersion(versions, groupVersion) && found {
glog.Infof("Starting %s apis", groupVersion)
if containsResource(resources, "certificatesigningrequests") {
glog.Infof("Starting certificate request controller")
resyncPeriod := ResyncPeriod(s)()
certController, err := certcontroller.NewCertificateController(
client("certificate-controller"),
resyncPeriod,
s.ClusterSigningCertFile,
s.ClusterSigningKeyFile,
s.ApproveAllKubeletCSRsForGroup,
)
if err != nil {
glog.Errorf("Failed to start certificate controller: %v", err)
} else {
go certController.Run(1, wait.NeverStop)
}
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
}
serviceaccountcontroller.NewServiceAccountsController(
client("service-account-controller"),
serviceaccountcontroller.DefaultServiceAccountsControllerOptions(),
).Run()
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
if s.EnableGarbageCollector {
gcClientset := client("generic-garbage-collector")
groupVersionResources, err := gcClientset.Discovery().ServerPreferredResources()
if err != nil {
glog.Fatalf("Failed to get supported resources from server: %v", err)
}
config := restclient.AddUserAgent(kubeconfig, "generic-garbage-collector")
config.ContentConfig.NegotiatedSerializer = serializer.DirectCodecFactory{CodecFactory: metaonly.NewMetadataCodecFactory()}
metaOnlyClientPool := dynamic.NewClientPool(config, restMapper, dynamic.LegacyAPIPathResolverFunc)
config.ContentConfig.NegotiatedSerializer = nil
clientPool := dynamic.NewClientPool(config, restMapper, dynamic.LegacyAPIPathResolverFunc)
garbageCollector, err := garbagecollector.NewGarbageCollector(metaOnlyClientPool, clientPool, restMapper, groupVersionResources)
if err != nil {
glog.Errorf("Failed to start the generic garbage collector: %v", err)
} else {
workers := int(s.ConcurrentGCSyncs)
go garbageCollector.Run(workers, wait.NeverStop)
}
}
sharedInformers.Start(stop)
select {}
}
// Run runs the CMServer. This should never exit.
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
}
// 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(kubeClient, s.ResyncPeriod).
Run(s.ConcurrentEndpointSyncs, util.NeverStop)
go replicationcontroller.NewReplicationManager(kubeClient, s.ResyncPeriod, replicationcontroller.BurstReplicas).
Run(s.ConcurrentRCSyncs, util.NeverStop)
if s.TerminatedPodGCThreshold > 0 {
go gc.New(kubeClient, 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, kubeClient,
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, kubeClient, 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, kubeClient, s.ClusterName, &s.ClusterCIDR)
routeController.Run(s.NodeSyncPeriod)
}
}
resourcequotacontroller.NewResourceQuotaController(kubeClient).Run(s.ResourceQuotaSyncPeriod)
// 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)
}
namespacecontroller.NewNamespaceController(kubeClient, versions, s.NamespaceSyncPeriod).Run()
groupVersion := "extensions/v1beta1"
resources, found := resourceMap[groupVersion]
// TODO: 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.")
metricsClient := metrics.NewHeapsterMetricsClient(kubeClient, metrics.DefaultHeapsterNamespace, metrics.DefaultHeapsterScheme, metrics.DefaultHeapsterService, metrics.DefaultHeapsterPort)
podautoscaler.NewHorizontalController(kubeClient, metricsClient).
Run(s.HorizontalPodAutoscalerSyncPeriod)
}
if containsResource(resources, "daemonsets") {
glog.Infof("Starting daemon set controller")
go daemon.NewDaemonSetsController(kubeClient, s.ResyncPeriod).
Run(s.ConcurrentDSCSyncs, util.NeverStop)
}
if containsResource(resources, "jobs") {
glog.Infof("Starting job controller")
go job.NewJobController(kubeClient, s.ResyncPeriod).
Run(s.ConcurrentJobSyncs, util.NeverStop)
}
if containsResource(resources, "deployments") {
glog.Infof("Starting deployment controller")
deployment.New(kubeClient).
Run(s.DeploymentControllerSyncPeriod)
}
}
pvclaimBinder := persistentvolumecontroller.NewPersistentVolumeClaimBinder(kubeClient, s.PVClaimBinderSyncPeriod)
pvclaimBinder.Run()
pvRecycler, err := persistentvolumecontroller.NewPersistentVolumeRecycler(kubeClient, s.PVClaimBinderSyncPeriod, ProbeRecyclableVolumePlugins(s.VolumeConfigFlags))
if err != nil {
glog.Fatalf("Failed to start persistent volume recycler: %+v", err)
}
pvRecycler.Run()
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 := util.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 {
serviceaccount.NewTokensController(
kubeClient,
serviceaccount.TokensControllerOptions{
TokenGenerator: serviceaccount.JWTTokenGenerator(privateKey),
RootCA: rootCA,
},
).Run()
}
}
serviceaccount.NewServiceAccountsController(
kubeClient,
serviceaccount.DefaultServiceAccountsControllerOptions(),
).Run()
select {}
}
func startComponents(firstManifestURL, secondManifestURL string) (string, string) {
// Setup
handler := delegateHandler{}
apiServer := httptest.NewServer(&handler)
cfg := etcd.Config{
Endpoints: []string{"http://127.0.0.1:4001"},
}
etcdClient, err := etcd.New(cfg)
if err != nil {
glog.Fatalf("Error creating etcd client: %v", err)
}
glog.Infof("Creating etcd client pointing to %v", cfg.Endpoints)
keysAPI := etcd.NewKeysAPI(etcdClient)
sleep := 4 * time.Second
ok := false
for i := 0; i < 3; i++ {
keys, err := keysAPI.Get(context.TODO(), "/", nil)
if err != nil {
glog.Warningf("Unable to list root etcd keys: %v", err)
if i < 2 {
time.Sleep(sleep)
sleep = sleep * sleep
}
continue
}
for _, node := range keys.Node.Nodes {
if _, err := keysAPI.Delete(context.TODO(), node.Key, &etcd.DeleteOptions{Recursive: true}); err != nil {
glog.Fatalf("Unable delete key: %v", err)
}
}
ok = true
break
}
if !ok {
glog.Fatalf("Failed to connect to etcd")
}
cl := client.NewOrDie(&client.Config{Host: apiServer.URL, ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
clientset := clientset.NewForConfigOrDie(&client.Config{Host: apiServer.URL, ContentConfig: client.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
// TODO: caesarxuchao: hacky way to specify version of Experimental client.
// We will fix this by supporting multiple group versions in Config
cl.ExtensionsClient = client.NewExtensionsOrDie(&client.Config{Host: apiServer.URL, ContentConfig: client.ContentConfig{GroupVersion: testapi.Extensions.GroupVersion()}})
// Master
host, port, err := net.SplitHostPort(strings.TrimLeft(apiServer.URL, "http://"))
if err != nil {
glog.Fatalf("Unable to parse URL '%v': %v", apiServer.URL, err)
}
portNumber, err := strconv.Atoi(port)
if err != nil {
glog.Fatalf("Nonnumeric port? %v", err)
}
publicAddress := net.ParseIP(host)
if publicAddress == nil {
glog.Fatalf("No public address for %s", host)
}
// The caller of master.New should guarantee pulicAddress is properly set
hostIP, err := utilnet.ChooseBindAddress(publicAddress)
if err != nil {
glog.Fatalf("Unable to find suitable network address.error='%v' . "+
"Fail to get a valid public address for master.", err)
}
masterConfig := framework.NewMasterConfig()
masterConfig.EnableCoreControllers = true
masterConfig.EnableProfiling = true
masterConfig.ReadWritePort = portNumber
masterConfig.PublicAddress = hostIP
masterConfig.CacheTimeout = 2 * time.Second
// Create a master and install handlers into mux.
m := master.New(masterConfig)
handler.delegate = m.Handler
// Scheduler
schedulerConfigFactory := factory.NewConfigFactory(cl, api.DefaultSchedulerName)
schedulerConfig, err := schedulerConfigFactory.Create()
if err != nil {
glog.Fatalf("Couldn't create scheduler config: %v", err)
}
eventBroadcaster := record.NewBroadcaster()
schedulerConfig.Recorder = eventBroadcaster.NewRecorder(api.EventSource{Component: api.DefaultSchedulerName})
eventBroadcaster.StartLogging(glog.Infof)
eventBroadcaster.StartRecordingToSink(cl.Events(""))
scheduler.New(schedulerConfig).Run()
// ensure the service endpoints are sync'd several times within the window that the integration tests wait
go endpointcontroller.NewEndpointController(clientset, controller.NoResyncPeriodFunc).
Run(3, util.NeverStop)
// TODO: Write an integration test for the replication controllers watch.
go replicationcontroller.NewReplicationManager(clientset, controller.NoResyncPeriodFunc, replicationcontroller.BurstReplicas).
Run(3, util.NeverStop)
nodeController := nodecontroller.NewNodeController(nil, clientset, 5*time.Minute, util.NewFakeRateLimiter(), util.NewFakeRateLimiter(),
40*time.Second, 60*time.Second, 5*time.Second, nil, false)
nodeController.Run(5 * time.Second)
cadvisorInterface := new(cadvisor.Fake)
// Kubelet (localhost)
testRootDir := integration.MakeTempDirOrDie("kubelet_integ_1.", "")
configFilePath := integration.MakeTempDirOrDie("config", testRootDir)
glog.Infof("Using %s as root dir for kubelet #1", testRootDir)
cm := cm.NewStubContainerManager()
kcfg := kubeletapp.SimpleKubelet(
clientset,
fakeDocker1,
"localhost",
testRootDir,
firstManifestURL,
"127.0.0.1",
10250, /* KubeletPort */
0, /* ReadOnlyPort */
api.NamespaceDefault,
empty_dir.ProbeVolumePlugins(),
nil,
cadvisorInterface,
configFilePath,
nil,
kubecontainer.FakeOS{},
1*time.Second, /* FileCheckFrequency */
1*time.Second, /* HTTPCheckFrequency */
10*time.Second, /* MinimumGCAge */
3*time.Second, /* NodeStatusUpdateFrequency */
10*time.Second, /* SyncFrequency */
10*time.Second, /* OutOfDiskTransitionFrequency */
40, /* MaxPods */
cm, net.ParseIP("127.0.0.1"))
kubeletapp.RunKubelet(kcfg)
// Kubelet (machine)
// Create a second kubelet so that the guestbook example's two redis slaves both
// have a place they can schedule.
testRootDir = integration.MakeTempDirOrDie("kubelet_integ_2.", "")
glog.Infof("Using %s as root dir for kubelet #2", testRootDir)
kcfg = kubeletapp.SimpleKubelet(
clientset,
fakeDocker2,
"127.0.0.1",
testRootDir,
secondManifestURL,
"127.0.0.1",
10251, /* KubeletPort */
0, /* ReadOnlyPort */
api.NamespaceDefault,
empty_dir.ProbeVolumePlugins(),
nil,
cadvisorInterface,
"",
nil,
kubecontainer.FakeOS{},
1*time.Second, /* FileCheckFrequency */
1*time.Second, /* HTTPCheckFrequency */
10*time.Second, /* MinimumGCAge */
3*time.Second, /* NodeStatusUpdateFrequency */
10*time.Second, /* SyncFrequency */
10*time.Second, /* OutOfDiskTransitionFrequency */
40, /* MaxPods */
cm,
net.ParseIP("127.0.0.1"))
kubeletapp.RunKubelet(kcfg)
return apiServer.URL, configFilePath
}
func StartControllers(s *options.CMServer, kubeClient *client.Client, kubeconfig *restclient.Config, stop <-chan struct{}) error {
podInformer := informers.CreateSharedPodIndexInformer(clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "pod-informer")), ResyncPeriod(s)())
nodeInformer := informers.CreateSharedNodeIndexInformer(clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "node-informer")), ResyncPeriod(s)())
pvcInformer := informers.CreateSharedPVCIndexInformer(clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "pvc-informer")), ResyncPeriod(s)())
pvInformer := informers.CreateSharedPVIndexInformer(clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "pv-informer")), ResyncPeriod(s)())
informers := map[reflect.Type]framework.SharedIndexInformer{}
informers[reflect.TypeOf(&api.Pod{})] = podInformer
informers[reflect.TypeOf(&api.Node{})] = nodeInformer
informers[reflect.TypeOf(&api.PersistentVolumeClaim{})] = pvcInformer
informers[reflect.TypeOf(&api.PersistentVolume{})] = pvInformer
go endpointcontroller.NewEndpointController(podInformer, clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "endpoint-controller"))).
Run(int(s.ConcurrentEndpointSyncs), wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
go replicationcontroller.NewReplicationManager(
podInformer,
clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "replication-controller")),
ResyncPeriod(s),
replicationcontroller.BurstReplicas,
int(s.LookupCacheSizeForRC),
).Run(int(s.ConcurrentRCSyncs), wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
if s.TerminatedPodGCThreshold > 0 {
go gc.New(clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "garbage-collector")), ResyncPeriod(s), int(s.TerminatedPodGCThreshold)).
Run(wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
if err != nil {
glog.Fatalf("Cloud provider could not be initialized: %v", err)
}
_, clusterCIDR, err := net.ParseCIDR(s.ClusterCIDR)
if err != nil {
glog.Warningf("Unsuccessful parsing of cluster CIDR %v: %v", s.ClusterCIDR, err)
}
_, serviceCIDR, err := net.ParseCIDR(s.ServiceCIDR)
if err != nil {
glog.Warningf("Unsuccessful parsing of service CIDR %v: %v", s.ServiceCIDR, err)
}
nodeController := nodecontroller.NewNodeController(cloud, clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "node-controller")),
s.PodEvictionTimeout.Duration, flowcontrol.NewTokenBucketRateLimiter(s.DeletingPodsQps, int(s.DeletingPodsBurst)),
flowcontrol.NewTokenBucketRateLimiter(s.DeletingPodsQps, int(s.DeletingPodsBurst)),
s.NodeMonitorGracePeriod.Duration, s.NodeStartupGracePeriod.Duration, s.NodeMonitorPeriod.Duration, clusterCIDR, serviceCIDR, int(s.NodeCIDRMaskSize), s.AllocateNodeCIDRs)
nodeController.Run(s.NodeSyncPeriod.Duration)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
serviceController := servicecontroller.New(cloud, clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "service-controller")), s.ClusterName)
if err := serviceController.Run(s.ServiceSyncPeriod.Duration, s.NodeSyncPeriod.Duration); err != nil {
glog.Errorf("Failed to start service controller: %v", err)
}
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
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 if s.ConfigureCloudRoutes && !s.AllocateNodeCIDRs {
glog.Warningf("allocate-node-cidrs set to %v, will not configure cloud provider routes.", s.AllocateNodeCIDRs)
} else if s.AllocateNodeCIDRs && !s.ConfigureCloudRoutes {
glog.Infof("configure-cloud-routes is set to %v, will not configure cloud provider routes.", s.ConfigureCloudRoutes)
}
resourceQuotaControllerClient := clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "resourcequota-controller"))
resourceQuotaRegistry := quotainstall.NewRegistry(resourceQuotaControllerClient)
groupKindsToReplenish := []unversioned.GroupKind{
api.Kind("Pod"),
api.Kind("Service"),
api.Kind("ReplicationController"),
api.Kind("PersistentVolumeClaim"),
api.Kind("Secret"),
api.Kind("ConfigMap"),
}
resourceQuotaControllerOptions := &resourcequotacontroller.ResourceQuotaControllerOptions{
KubeClient: resourceQuotaControllerClient,
ResyncPeriod: controller.StaticResyncPeriodFunc(s.ResourceQuotaSyncPeriod.Duration),
Registry: resourceQuotaRegistry,
ControllerFactory: resourcequotacontroller.NewReplenishmentControllerFactory(podInformer, resourceQuotaControllerClient),
ReplenishmentResyncPeriod: ResyncPeriod(s),
GroupKindsToReplenish: groupKindsToReplenish,
}
go resourcequotacontroller.NewResourceQuotaController(resourceQuotaControllerOptions).Run(int(s.ConcurrentResourceQuotaSyncs), wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
// 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)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
groupVersion := "extensions/v1beta1"
resources, found := resourceMap[groupVersion]
// TODO: 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)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
if containsResource(resources, "daemonsets") {
glog.Infof("Starting daemon set controller")
go daemon.NewDaemonSetsController(podInformer, clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "daemon-set-controller")), ResyncPeriod(s), int(s.LookupCacheSizeForDaemonSet)).
Run(int(s.ConcurrentDaemonSetSyncs), wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
if containsResource(resources, "jobs") {
glog.Infof("Starting job controller")
go job.NewJobController(podInformer, clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "job-controller"))).
Run(int(s.ConcurrentJobSyncs), wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
if containsResource(resources, "deployments") {
glog.Infof("Starting deployment controller")
go deployment.NewDeploymentController(clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "deployment-controller")), ResyncPeriod(s)).
Run(int(s.ConcurrentDeploymentSyncs), wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
if containsResource(resources, "replicasets") {
glog.Infof("Starting ReplicaSet controller")
go replicaset.NewReplicaSetController(clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "replicaset-controller")), ResyncPeriod(s), replicaset.BurstReplicas, int(s.LookupCacheSizeForRS)).
Run(int(s.ConcurrentRSSyncs), wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
}
groupVersion = "apps/v1alpha1"
resources, found = resourceMap[groupVersion]
glog.Infof("Attempting to start petset, full resource map %+v", resourceMap)
if containsVersion(versions, groupVersion) && found {
glog.Infof("Starting %s apis", groupVersion)
if containsResource(resources, "petsets") {
glog.Infof("Starting PetSet controller")
resyncPeriod := ResyncPeriod(s)()
go petset.NewPetSetController(
podInformer,
// TODO: Switch to using clientset
kubeClient,
resyncPeriod,
).Run(1, wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
}
provisioner, err := NewVolumeProvisioner(cloud, s.VolumeConfiguration)
if err != nil {
glog.Fatal("A Provisioner could not be created, but one was expected. Provisioning will not work. This functionality is considered an early Alpha version.")
}
volumeController := persistentvolumecontroller.NewPersistentVolumeController(
clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "persistent-volume-binder")),
s.PVClaimBinderSyncPeriod.Duration,
provisioner,
ProbeRecyclableVolumePlugins(s.VolumeConfiguration),
cloud,
s.ClusterName,
nil, nil, nil,
)
volumeController.Run()
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
attachDetachController, attachDetachControllerErr :=
volume.NewAttachDetachController(
clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "attachdetach-controller")),
podInformer,
nodeInformer,
pvcInformer,
pvInformer,
cloud,
ProbeAttachableVolumePlugins(s.VolumeConfiguration))
if attachDetachControllerErr != nil {
glog.Fatalf("Failed to start attach/detach controller: %v", attachDetachControllerErr)
} else {
go attachDetachController.Run(wait.NeverStop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
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 {
serviceaccountcontroller.NewTokensController(
clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "tokens-controller")),
serviceaccountcontroller.TokensControllerOptions{
TokenGenerator: serviceaccount.JWTTokenGenerator(privateKey),
RootCA: rootCA,
},
).Run()
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
}
serviceaccountcontroller.NewServiceAccountsController(
clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "service-account-controller")),
serviceaccountcontroller.DefaultServiceAccountsControllerOptions(),
).Run()
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
if s.EnableGarbageCollector {
gcClientset := clientset.NewForConfigOrDie(restclient.AddUserAgent(kubeconfig, "generic-garbage-collector"))
groupVersionResources, err := gcClientset.Discovery().ServerPreferredResources()
if err != nil {
glog.Fatalf("Failed to get supported resources from server: %v", err)
}
clientPool := dynamic.NewClientPool(restclient.AddUserAgent(kubeconfig, "generic-garbage-collector"), dynamic.LegacyAPIPathResolverFunc)
garbageCollector, err := garbagecollector.NewGarbageCollector(clientPool, groupVersionResources)
if err != nil {
glog.Errorf("Failed to start the generic garbage collector")
} else {
// TODO: make this a flag of kube-controller-manager
workers := 5
go garbageCollector.Run(workers, wait.NeverStop)
}
}
// run the shared informers
for _, informer := range informers {
go informer.Run(wait.NeverStop)
}
select {}
}
func StartControllers(s *options.CMServer, kubeClient *client.Client, kubeconfig *client.Config, stop <-chan struct{}) error {
go endpointcontroller.NewEndpointController(clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "endpoint-controller")), ResyncPeriod(s)).
Run(s.ConcurrentEndpointSyncs, wait.NeverStop)
go replicationcontroller.NewReplicationManager(
clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "replication-controller")),
ResyncPeriod(s),
replicationcontroller.BurstReplicas,
s.LookupCacheSizeForRC,
).Run(s.ConcurrentRCSyncs, wait.NeverStop)
if s.TerminatedPodGCThreshold > 0 {
go gc.New(clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "garbage-collector")), ResyncPeriod(s), s.TerminatedPodGCThreshold).
Run(wait.NeverStop)
}
cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
if err != nil {
glog.Fatalf("Cloud provider could not be initialized: %v", err)
}
// this cidr has been validated already
_, clusterCIDR, _ := net.ParseCIDR(s.ClusterCIDR)
nodeController := nodecontroller.NewNodeController(cloud, clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "node-controller")),
s.PodEvictionTimeout.Duration, util.NewTokenBucketRateLimiter(s.DeletingPodsQps, s.DeletingPodsBurst),
util.NewTokenBucketRateLimiter(s.DeletingPodsQps, s.DeletingPodsBurst),
s.NodeMonitorGracePeriod.Duration, s.NodeStartupGracePeriod.Duration, s.NodeMonitorPeriod.Duration, clusterCIDR, s.AllocateNodeCIDRs)
nodeController.Run(s.NodeSyncPeriod.Duration)
serviceController := servicecontroller.New(cloud, clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "service-controller")), s.ClusterName)
if err := serviceController.Run(s.ServiceSyncPeriod.Duration, s.NodeSyncPeriod.Duration); 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, clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "route-controller")), s.ClusterName, clusterCIDR)
routeController.Run(s.NodeSyncPeriod.Duration)
}
} else {
glog.Infof("allocate-node-cidrs set to %v, node controller not creating routes", s.AllocateNodeCIDRs)
}
go resourcequotacontroller.NewResourceQuotaController(
clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "resourcequota-controller")),
controller.StaticResyncPeriodFunc(s.ResourceQuotaSyncPeriod.Duration)).Run(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 = 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)
}
namespaceController := namespacecontroller.NewNamespaceController(clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "namespace-controller")), versions, s.NamespaceSyncPeriod.Duration)
go namespaceController.Run(s.ConcurrentNamespaceSyncs, wait.NeverStop)
groupVersion := "extensions/v1beta1"
resources, found := resourceMap[groupVersion]
// TODO: 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(client.AddUserAgent(kubeconfig, "horizontal-pod-autoscaler"))
metricsClient := metrics.NewHeapsterMetricsClient(
hpaClient,
metrics.DefaultHeapsterNamespace,
metrics.DefaultHeapsterScheme,
metrics.DefaultHeapsterService,
metrics.DefaultHeapsterPort,
)
podautoscaler.NewHorizontalController(hpaClient.Core(), hpaClient.Extensions(), hpaClient, metricsClient).
Run(s.HorizontalPodAutoscalerSyncPeriod.Duration)
}
if containsResource(resources, "daemonsets") {
glog.Infof("Starting daemon set controller")
go daemon.NewDaemonSetsController(clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "daemon-set-controller")), ResyncPeriod(s)).
Run(s.ConcurrentDaemonSetSyncs, wait.NeverStop)
}
if containsResource(resources, "jobs") {
glog.Infof("Starting job controller")
go job.NewJobController(clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "job-controller")), ResyncPeriod(s)).
Run(s.ConcurrentJobSyncs, wait.NeverStop)
}
if containsResource(resources, "deployments") {
glog.Infof("Starting deployment controller")
go deployment.NewDeploymentController(clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "deployment-controller")), ResyncPeriod(s)).
Run(s.ConcurrentDeploymentSyncs, wait.NeverStop)
}
if containsResource(resources, "replicasets") {
glog.Infof("Starting ReplicaSet controller")
go replicaset.NewReplicaSetController(clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "replicaset-controller")), ResyncPeriod(s), replicaset.BurstReplicas, s.LookupCacheSizeForRS).
Run(s.ConcurrentRSSyncs, wait.NeverStop)
}
}
volumePlugins := ProbeRecyclableVolumePlugins(s.VolumeConfiguration)
provisioner, err := NewVolumeProvisioner(cloud, s.VolumeConfiguration)
if err != nil {
glog.Fatal("A Provisioner could not be created, but one was expected. Provisioning will not work. This functionality is considered an early Alpha version.")
}
pvclaimBinder := persistentvolumecontroller.NewPersistentVolumeClaimBinder(clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "persistent-volume-binder")), s.PVClaimBinderSyncPeriod.Duration)
pvclaimBinder.Run()
pvRecycler, err := persistentvolumecontroller.NewPersistentVolumeRecycler(
clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "persistent-volume-recycler")),
s.PVClaimBinderSyncPeriod.Duration,
s.VolumeConfiguration.PersistentVolumeRecyclerConfiguration.MaximumRetry,
ProbeRecyclableVolumePlugins(s.VolumeConfiguration),
cloud,
)
if err != nil {
glog.Fatalf("Failed to start persistent volume recycler: %+v", err)
}
pvRecycler.Run()
if provisioner != nil {
pvController, err := persistentvolumecontroller.NewPersistentVolumeProvisionerController(persistentvolumecontroller.NewControllerClient(clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "persistent-volume-provisioner"))), s.PVClaimBinderSyncPeriod.Duration, s.ClusterName, volumePlugins, provisioner, cloud)
if err != nil {
glog.Fatalf("Failed to start persistent volume provisioner controller: %+v", err)
}
pvController.Run()
}
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 := util.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 {
serviceaccountcontroller.NewTokensController(
clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "tokens-controller")),
serviceaccountcontroller.TokensControllerOptions{
TokenGenerator: serviceaccount.JWTTokenGenerator(privateKey),
RootCA: rootCA,
},
).Run()
}
}
serviceaccountcontroller.NewServiceAccountsController(
clientset.NewForConfigOrDie(client.AddUserAgent(kubeconfig, "service-account-controller")),
serviceaccountcontroller.DefaultServiceAccountsControllerOptions(),
).Run()
select {}
}
func startComponents(firstManifestURL, secondManifestURL string) (string, string) {
// Setup
servers := []string{}
glog.Infof("Creating etcd client pointing to %v", servers)
handler := delegateHandler{}
apiServer := httptest.NewServer(&handler)
etcdClient := etcd.NewClient(servers)
sleep := 4 * time.Second
ok := false
for i := 0; i < 3; i++ {
keys, err := etcdClient.Get("/", false, false)
if err != nil {
glog.Warningf("Unable to list root etcd keys: %v", err)
if i < 2 {
time.Sleep(sleep)
sleep = sleep * sleep
}
continue
}
for _, node := range keys.Node.Nodes {
if _, err := etcdClient.Delete(node.Key, true); err != nil {
glog.Fatalf("Unable delete key: %v", err)
}
}
ok = true
break
}
if !ok {
glog.Fatalf("Failed to connect to etcd")
}
cl := client.NewOrDie(&client.Config{Host: apiServer.URL, GroupVersion: testapi.Default.GroupVersion()})
// TODO: caesarxuchao: hacky way to specify version of Experimental client.
// We will fix this by supporting multiple group versions in Config
cl.ExtensionsClient = client.NewExtensionsOrDie(&client.Config{Host: apiServer.URL, GroupVersion: testapi.Extensions.GroupVersion()})
storageVersions := make(map[string]string)
etcdStorage, err := master.NewEtcdStorage(etcdClient, latest.GroupOrDie("").InterfacesFor, testapi.Default.GroupAndVersion(), etcdtest.PathPrefix())
storageVersions[""] = testapi.Default.GroupAndVersion()
if err != nil {
glog.Fatalf("Unable to get etcd storage: %v", err)
}
expEtcdStorage, err := master.NewEtcdStorage(etcdClient, latest.GroupOrDie("extensions").InterfacesFor, testapi.Extensions.GroupAndVersion(), etcdtest.PathPrefix())
storageVersions["extensions"] = testapi.Extensions.GroupAndVersion()
if err != nil {
glog.Fatalf("Unable to get etcd storage for experimental: %v", err)
}
storageDestinations := master.NewStorageDestinations()
storageDestinations.AddAPIGroup("", etcdStorage)
storageDestinations.AddAPIGroup("extensions", expEtcdStorage)
// Master
host, port, err := net.SplitHostPort(strings.TrimLeft(apiServer.URL, "http://"))
if err != nil {
glog.Fatalf("Unable to parse URL '%v': %v", apiServer.URL, err)
}
portNumber, err := strconv.Atoi(port)
if err != nil {
glog.Fatalf("Nonnumeric port? %v", err)
}
publicAddress := net.ParseIP(host)
if publicAddress == nil {
glog.Fatalf("No public address for %s", host)
}
// The caller of master.New should guarantee pulicAddress is properly set
hostIP, err := util.ValidPublicAddrForMaster(publicAddress)
if err != nil {
glog.Fatalf("Unable to find suitable network address.error='%v' . "+
"Fail to get a valid public address for master.", err)
}
// Create a master and install handlers into mux.
m := master.New(&master.Config{
StorageDestinations: storageDestinations,
KubeletClient: fakeKubeletClient{},
EnableCoreControllers: true,
EnableLogsSupport: false,
EnableProfiling: true,
APIPrefix: "/api",
APIGroupPrefix: "/apis",
Authorizer: apiserver.NewAlwaysAllowAuthorizer(),
AdmissionControl: admit.NewAlwaysAdmit(),
ReadWritePort: portNumber,
PublicAddress: hostIP,
CacheTimeout: 2 * time.Second,
StorageVersions: storageVersions,
})
handler.delegate = m.Handler
// Scheduler
schedulerConfigFactory := factory.NewConfigFactory(cl, nil)
schedulerConfig, err := schedulerConfigFactory.Create()
if err != nil {
glog.Fatalf("Couldn't create scheduler config: %v", err)
}
eventBroadcaster := record.NewBroadcaster()
schedulerConfig.Recorder = eventBroadcaster.NewRecorder(api.EventSource{Component: "scheduler"})
eventBroadcaster.StartLogging(glog.Infof)
eventBroadcaster.StartRecordingToSink(cl.Events(""))
scheduler.New(schedulerConfig).Run()
// ensure the service endpoints are sync'd several times within the window that the integration tests wait
go endpointcontroller.NewEndpointController(cl, controller.NoResyncPeriodFunc).
Run(3, util.NeverStop)
// TODO: Write an integration test for the replication controllers watch.
go replicationcontroller.NewReplicationManager(cl, controller.NoResyncPeriodFunc, replicationcontroller.BurstReplicas).
Run(3, util.NeverStop)
nodeController := nodecontroller.NewNodeController(nil, cl, 5*time.Minute, util.NewFakeRateLimiter(), util.NewFakeRateLimiter(),
40*time.Second, 60*time.Second, 5*time.Second, nil, false)
nodeController.Run(5 * time.Second)
cadvisorInterface := new(cadvisor.Fake)
// Kubelet (localhost)
testRootDir := integration.MakeTempDirOrDie("kubelet_integ_1.", "")
configFilePath := integration.MakeTempDirOrDie("config", testRootDir)
glog.Infof("Using %s as root dir for kubelet #1", testRootDir)
fakeDocker1.VersionInfo = docker.Env{"ApiVersion=1.20"}
cm := cm.NewStubContainerManager()
kcfg := kubeletapp.SimpleKubelet(
cl,
fakeDocker1,
"localhost",
testRootDir,
firstManifestURL,
"127.0.0.1",
10250, /* KubeletPort */
0, /* ReadOnlyPort */
api.NamespaceDefault,
empty_dir.ProbeVolumePlugins(),
nil,
cadvisorInterface,
configFilePath,
nil,
kubecontainer.FakeOS{},
1*time.Second, /* FileCheckFrequency */
1*time.Second, /* HTTPCheckFrequency */
10*time.Second, /* MinimumGCAge */
3*time.Second, /* NodeStatusUpdateFrequency */
10*time.Second, /* SyncFrequency */
40, /* MaxPods */
cm)
kubeletapp.RunKubelet(kcfg)
// Kubelet (machine)
// Create a second kubelet so that the guestbook example's two redis slaves both
// have a place they can schedule.
testRootDir = integration.MakeTempDirOrDie("kubelet_integ_2.", "")
glog.Infof("Using %s as root dir for kubelet #2", testRootDir)
fakeDocker2.VersionInfo = docker.Env{"ApiVersion=1.20"}
kcfg = kubeletapp.SimpleKubelet(
cl,
fakeDocker2,
"127.0.0.1",
testRootDir,
secondManifestURL,
"127.0.0.1",
10251, /* KubeletPort */
0, /* ReadOnlyPort */
api.NamespaceDefault,
empty_dir.ProbeVolumePlugins(),
nil,
cadvisorInterface,
"",
nil,
kubecontainer.FakeOS{},
1*time.Second, /* FileCheckFrequency */
1*time.Second, /* HTTPCheckFrequency */
10*time.Second, /* MinimumGCAge */
3*time.Second, /* NodeStatusUpdateFrequency */
10*time.Second, /* SyncFrequency */
40, /* MaxPods */
cm)
kubeletapp.RunKubelet(kcfg)
return apiServer.URL, configFilePath
}
// RunEndpointController starts the Kubernetes replication controller sync loop
func (c *MasterConfig) RunEndpointController(client *client.Client) {
endpoints := endpointcontroller.NewEndpointController(c.Informers.Pods().Informer(), clientadapter.FromUnversionedClient(client))
go endpoints.Run(int(c.ControllerManager.ConcurrentEndpointSyncs), utilwait.NeverStop)
}
// Run runs the CMServer. This should never exit.
func Run(s *options.CMServer) 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"), ResyncPeriod(s)).
Run(s.ConcurrentEndpointSyncs, util.NeverStop)
go replicationcontroller.NewReplicationManager(
clientForUserAgentOrDie(*kubeconfig, "replication-controller"),
ResyncPeriod(s),
replicationcontroller.BurstReplicas,
).Run(s.ConcurrentRCSyncs, util.NeverStop)
if s.TerminatedPodGCThreshold > 0 {
go gc.New(clientForUserAgentOrDie(*kubeconfig, "garbage-collector"), ResyncPeriod(s), 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)
}
ProbeNetworkProviders()
networkProvider, err := networkprovider.InitNetworkProvider(s.NetworkProvider)
if err != nil {
glog.Errorf("Network provider could not be initialized: %v", err)
}
if networkProvider != nil {
networkController := networkcontroller.NewNetworkController(kubeClient, networkProvider)
go networkController.Run(util.NeverStop)
} else {
glog.Errorf("NetController should not be run without a networkprovider.")
}
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)
}
namespacecontroller.NewNamespaceController(clientForUserAgentOrDie(*kubeconfig, "namespace-controller"), versions, s.NamespaceSyncPeriod).Run()
groupVersion := "extensions/v1beta1"
resources, found := resourceMap[groupVersion]
// TODO: 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 := clientForUserAgentOrDie(*kubeconfig, "horizontal-pod-autoscaler")
metricsClient := metrics.NewHeapsterMetricsClient(
hpaClient,
metrics.DefaultHeapsterNamespace,
metrics.DefaultHeapsterScheme,
metrics.DefaultHeapsterService,
metrics.DefaultHeapsterPort,
)
podautoscaler.NewHorizontalController(hpaClient, hpaClient, hpaClient, metricsClient).
Run(s.HorizontalPodAutoscalerSyncPeriod)
}
if containsResource(resources, "daemonsets") {
glog.Infof("Starting daemon set controller")
go daemon.NewDaemonSetsController(clientForUserAgentOrDie(*kubeconfig, "daemon-set-controller"), ResyncPeriod(s)).
Run(s.ConcurrentDSCSyncs, util.NeverStop)
}
if containsResource(resources, "jobs") {
glog.Infof("Starting job controller")
go job.NewJobController(clientForUserAgentOrDie(*kubeconfig, "job-controller"), ResyncPeriod(s)).
Run(s.ConcurrentJobSyncs, util.NeverStop)
}
if containsResource(resources, "deployments") {
glog.Infof("Starting deployment controller")
go deployment.NewDeploymentController(clientForUserAgentOrDie(*kubeconfig, "deployment-controller"), ResyncPeriod(s)).
Run(s.ConcurrentDeploymentSyncs, util.NeverStop)
}
}
volumePlugins := ProbeRecyclableVolumePlugins(s.VolumeConfigFlags)
provisioner, err := NewVolumeProvisioner(cloud, s.VolumeConfigFlags)
if err != nil {
glog.Fatal("A Provisioner could not be created, but one was expected. Provisioning will not work. This functionality is considered an early Alpha version.")
}
pvclaimBinder := persistentvolumecontroller.NewPersistentVolumeClaimBinder(clientForUserAgentOrDie(*kubeconfig, "persistent-volume-binder"), s.PVClaimBinderSyncPeriod)
pvclaimBinder.Run()
pvRecycler, err := persistentvolumecontroller.NewPersistentVolumeRecycler(clientForUserAgentOrDie(*kubeconfig, "persistent-volume-recycler"), s.PVClaimBinderSyncPeriod, ProbeRecyclableVolumePlugins(s.VolumeConfigFlags), cloud)
if err != nil {
glog.Fatalf("Failed to start persistent volume recycler: %+v", err)
}
pvRecycler.Run()
if provisioner != nil {
pvController, err := persistentvolumecontroller.NewPersistentVolumeProvisionerController(persistentvolumecontroller.NewControllerClient(clientForUserAgentOrDie(*kubeconfig, "persistent-volume-provisioner")), s.PVClaimBinderSyncPeriod, volumePlugins, provisioner, cloud)
if err != nil {
glog.Fatalf("Failed to start persistent volume provisioner controller: %+v", err)
}
pvController.Run()
}
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 := util.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 {
serviceaccountcontroller.NewTokensController(
clientForUserAgentOrDie(*kubeconfig, "tokens-controller"),
serviceaccountcontroller.TokensControllerOptions{
TokenGenerator: serviceaccount.JWTTokenGenerator(privateKey),
RootCA: rootCA,
},
).Run()
}
}
serviceaccountcontroller.NewServiceAccountsController(
clientForUserAgentOrDie(*kubeconfig, "service-account-controller"),
serviceaccountcontroller.DefaultServiceAccountsControllerOptions(),
).Run()
select {}
}
// RunEndpointController starts the Kubernetes replication controller sync loop
func (c *MasterConfig) RunEndpointController() {
endpoints := endpointcontroller.NewEndpointController(internalclientset.FromUnversionedClient(c.KubeClient), kctrlmgr.ResyncPeriod(c.ControllerManager))
go endpoints.Run(c.ControllerManager.ConcurrentEndpointSyncs, utilwait.NeverStop)
}
// Run runs the CMServer. This should never exit.
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
}
// 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(kubeClient, s.ResyncPeriod).
Run(s.ConcurrentEndpointSyncs, util.NeverStop)
go replicationcontroller.NewReplicationManager(kubeClient, s.ResyncPeriod, replicationcontroller.BurstReplicas).
Run(s.ConcurrentRCSyncs, util.NeverStop)
if s.TerminatedPodGCThreshold > 0 {
go gc.New(kubeClient, 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, kubeClient,
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, kubeClient, 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, kubeClient, s.ClusterName, &s.ClusterCIDR)
routeController.Run(s.NodeSyncPeriod)
}
}
resourcequotacontroller.NewResourceQuotaController(kubeClient).Run(s.ResourceQuotaSyncPeriod)
namespacecontroller.NewNamespaceController(kubeClient, s.EnableExperimental, s.NamespaceSyncPeriod).Run()
if s.EnableExperimental {
go daemon.NewDaemonSetsController(kubeClient, s.ResyncPeriod).
Run(s.ConcurrentDSCSyncs, util.NeverStop)
go job.NewJobController(kubeClient, s.ResyncPeriod).
Run(s.ConcurrentJobSyncs, util.NeverStop)
podautoscaler.NewHorizontalController(kubeClient, metrics.NewHeapsterMetricsClient(kubeClient)).
Run(s.HorizontalPodAutoscalerSyncPeriod)
deployment.New(kubeClient).
Run(s.DeploymentControllerSyncPeriod)
}
pvclaimBinder := persistentvolumecontroller.NewPersistentVolumeClaimBinder(kubeClient, s.PVClaimBinderSyncPeriod)
pvclaimBinder.Run()
pvRecycler, err := persistentvolumecontroller.NewPersistentVolumeRecycler(kubeClient, s.PVClaimBinderSyncPeriod, ProbeRecyclableVolumePlugins(s.VolumeConfigFlags))
if err != nil {
glog.Fatalf("Failed to start persistent volume recycler: %+v", err)
}
pvRecycler.Run()
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 := util.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 {
serviceaccount.NewTokensController(
kubeClient,
serviceaccount.TokensControllerOptions{
TokenGenerator: serviceaccount.JWTTokenGenerator(privateKey),
RootCA: rootCA,
},
).Run()
}
}
serviceaccount.NewServiceAccountsController(
kubeClient,
serviceaccount.DefaultServiceAccountsControllerOptions(),
).Run()
select {}
}
// RunEndpointController starts the Kubernetes replication controller sync loop
func (c *MasterConfig) RunEndpointController() {
endpoints := endpointcontroller.NewEndpointController(c.KubeClient)
go endpoints.Run(c.ControllerManager.ConcurrentEndpointSyncs, util.NeverStop)
glog.Infof("Started Kubernetes Endpoint Controller")
}
func StartControllers(s *options.CMServer, rootClientBuilder, clientBuilder controller.ControllerClientBuilder, stop <-chan struct{}) error {
sharedInformers := informers.NewSharedInformerFactory(rootClientBuilder.ClientOrDie("shared-informers"), nil, ResyncPeriod(s)())
// always start the SA token controller first using a full-power client, since it needs to mint tokens for the rest
if len(s.ServiceAccountKeyFile) > 0 {
privateKey, err := serviceaccount.ReadPrivateKey(s.ServiceAccountKeyFile)
if err != nil {
return fmt.Errorf("error reading key for service account token controller: %v", err)
} else {
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 := certutil.ParseCertsPEM(rootCA); err != nil {
return fmt.Errorf("error parsing root-ca-file at %s: %v", s.RootCAFile, err)
}
} else {
rootCA = rootClientBuilder.ConfigOrDie("tokens-controller").CAData
}
go serviceaccountcontroller.NewTokensController(
rootClientBuilder.ClientOrDie("tokens-controller"),
serviceaccountcontroller.TokensControllerOptions{
TokenGenerator: serviceaccount.JWTTokenGenerator(privateKey),
RootCA: rootCA,
},
).Run(int(s.ConcurrentSATokenSyncs), stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
}
availableResources, err := getAvailableResources(clientBuilder)
if err != nil {
return err
}
go endpointcontroller.NewEndpointController(sharedInformers.Pods().Informer(), clientBuilder.ClientOrDie("endpoint-controller")).
Run(int(s.ConcurrentEndpointSyncs), stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
go replicationcontroller.NewReplicationManager(
sharedInformers.Pods().Informer(),
clientBuilder.ClientOrDie("replication-controller"),
ResyncPeriod(s),
replicationcontroller.BurstReplicas,
int(s.LookupCacheSizeForRC),
s.EnableGarbageCollector,
).Run(int(s.ConcurrentRCSyncs), stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
go podgc.NewPodGC(clientBuilder.ClientOrDie("pod-garbage-collector"), sharedInformers.Pods().Informer(),
int(s.TerminatedPodGCThreshold)).Run(stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
if err != nil {
return fmt.Errorf("cloud provider could not be initialized: %v", err)
}
_, clusterCIDR, err := net.ParseCIDR(s.ClusterCIDR)
if err != nil {
glog.Warningf("Unsuccessful parsing of cluster CIDR %v: %v", s.ClusterCIDR, err)
}
_, serviceCIDR, err := net.ParseCIDR(s.ServiceCIDR)
if err != nil {
glog.Warningf("Unsuccessful parsing of service CIDR %v: %v", s.ServiceCIDR, err)
}
nodeController, err := nodecontroller.NewNodeController(
sharedInformers.Pods(), sharedInformers.Nodes(), sharedInformers.DaemonSets(),
cloud, clientBuilder.ClientOrDie("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 {
return fmt.Errorf("failed to initialize nodecontroller: %v", err)
}
nodeController.Run()
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
serviceController, err := servicecontroller.New(cloud, clientBuilder.ClientOrDie("service-controller"), s.ClusterName)
if err != nil {
glog.Errorf("Failed to start service controller: %v", err)
} else {
serviceController.Run(int(s.ConcurrentServiceSyncs))
}
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
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, clientBuilder.ClientOrDie("route-controller"), s.ClusterName, clusterCIDR)
routeController.Run(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)
}
resourceQuotaControllerClient := clientBuilder.ClientOrDie("resourcequota-controller")
resourceQuotaRegistry := quotainstall.NewRegistry(resourceQuotaControllerClient, sharedInformers)
groupKindsToReplenish := []schema.GroupKind{
api.Kind("Pod"),
api.Kind("Service"),
api.Kind("ReplicationController"),
api.Kind("PersistentVolumeClaim"),
api.Kind("Secret"),
api.Kind("ConfigMap"),
}
resourceQuotaControllerOptions := &resourcequotacontroller.ResourceQuotaControllerOptions{
KubeClient: resourceQuotaControllerClient,
ResyncPeriod: controller.StaticResyncPeriodFunc(s.ResourceQuotaSyncPeriod.Duration),
Registry: resourceQuotaRegistry,
ControllerFactory: resourcequotacontroller.NewReplenishmentControllerFactory(sharedInformers, resourceQuotaControllerClient),
ReplenishmentResyncPeriod: ResyncPeriod(s),
GroupKindsToReplenish: groupKindsToReplenish,
}
go resourcequotacontroller.NewResourceQuotaController(resourceQuotaControllerOptions).Run(int(s.ConcurrentResourceQuotaSyncs), stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
// TODO: should use a dynamic RESTMapper built from the discovery results.
restMapper := registered.RESTMapper()
// Find the list of namespaced resources via discovery that the namespace controller must manage
namespaceKubeClient := clientBuilder.ClientOrDie("namespace-controller")
namespaceClientPool := dynamic.NewClientPool(rootClientBuilder.ConfigOrDie("namespace-controller"), restMapper, dynamic.LegacyAPIPathResolverFunc)
// TODO: consider using a list-watch + cache here rather than polling
var gvrFn func() ([]schema.GroupVersionResource, error)
rsrcs, err := namespaceKubeClient.Discovery().ServerResources()
if err != nil {
return fmt.Errorf("failed to get group version resources: %v", err)
}
for _, rsrcList := range rsrcs {
for ix := range rsrcList.APIResources {
rsrc := &rsrcList.APIResources[ix]
if rsrc.Kind == "ThirdPartyResource" {
gvrFn = namespaceKubeClient.Discovery().ServerPreferredNamespacedResources
}
}
}
if gvrFn == nil {
gvr, err := namespaceKubeClient.Discovery().ServerPreferredNamespacedResources()
if err != nil {
return fmt.Errorf("failed to get resources: %v", err)
}
gvrFn = func() ([]schema.GroupVersionResource, error) {
return gvr, nil
}
}
namespaceController := namespacecontroller.NewNamespaceController(namespaceKubeClient, namespaceClientPool, gvrFn, s.NamespaceSyncPeriod.Duration, v1.FinalizerKubernetes)
go namespaceController.Run(int(s.ConcurrentNamespaceSyncs), stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
if availableResources[schema.GroupVersionResource{Group: "extensions", Version: "v1beta1", Resource: "daemonsets"}] {
go daemon.NewDaemonSetsController(sharedInformers.DaemonSets(), sharedInformers.Pods(), sharedInformers.Nodes(), clientBuilder.ClientOrDie("daemon-set-controller"), int(s.LookupCacheSizeForDaemonSet)).
Run(int(s.ConcurrentDaemonSetSyncs), stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
if availableResources[schema.GroupVersionResource{Group: "extensions", Version: "v1beta1", Resource: "jobs"}] {
glog.Infof("Starting job controller")
go job.NewJobController(sharedInformers.Pods().Informer(), sharedInformers.Jobs(), clientBuilder.ClientOrDie("job-controller")).
Run(int(s.ConcurrentJobSyncs), stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
if availableResources[schema.GroupVersionResource{Group: "extensions", Version: "v1beta1", Resource: "deployments"}] {
glog.Infof("Starting deployment controller")
go deployment.NewDeploymentController(sharedInformers.Deployments(), sharedInformers.ReplicaSets(), sharedInformers.Pods(), clientBuilder.ClientOrDie("deployment-controller")).
Run(int(s.ConcurrentDeploymentSyncs), stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
if availableResources[schema.GroupVersionResource{Group: "extensions", Version: "v1beta1", Resource: "replicasets"}] {
glog.Infof("Starting ReplicaSet controller")
go replicaset.NewReplicaSetController(sharedInformers.ReplicaSets(), sharedInformers.Pods(), clientBuilder.ClientOrDie("replicaset-controller"), replicaset.BurstReplicas, int(s.LookupCacheSizeForRS), s.EnableGarbageCollector).
Run(int(s.ConcurrentRSSyncs), stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
if availableResources[schema.GroupVersionResource{Group: "autoscaling", Version: "v1", Resource: "horizontalpodautoscalers"}] {
glog.Infof("Starting horizontal pod autoscaler controller.")
hpaClient := clientBuilder.ClientOrDie("horizontal-pod-autoscaler")
metricsClient := metrics.NewHeapsterMetricsClient(
hpaClient,
metrics.DefaultHeapsterNamespace,
metrics.DefaultHeapsterScheme,
metrics.DefaultHeapsterService,
metrics.DefaultHeapsterPort,
)
replicaCalc := podautoscaler.NewReplicaCalculator(metricsClient, hpaClient.Core())
go podautoscaler.NewHorizontalController(hpaClient.Core(), hpaClient.Extensions(), hpaClient.Autoscaling(), replicaCalc, s.HorizontalPodAutoscalerSyncPeriod.Duration).
Run(stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
if availableResources[schema.GroupVersionResource{Group: "policy", Version: "v1beta1", Resource: "poddisruptionbudgets"}] {
glog.Infof("Starting disruption controller")
go disruption.NewDisruptionController(sharedInformers.Pods().Informer(), clientBuilder.ClientOrDie("disruption-controller")).Run(stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
if availableResources[schema.GroupVersionResource{Group: "apps", Version: "v1beta1", Resource: "statefulsets"}] {
glog.Infof("Starting StatefulSet controller")
resyncPeriod := ResyncPeriod(s)()
go petset.NewStatefulSetController(
sharedInformers.Pods().Informer(),
clientBuilder.ClientOrDie("statefulset-controller"),
resyncPeriod,
).Run(1, stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
if availableResources[schema.GroupVersionResource{Group: "batch", Version: "v2alpha1", Resource: "cronjobs"}] {
glog.Infof("Starting cronjob controller")
// TODO: this is a temp fix for allowing kubeClient list v2alpha1 sj, should switch to using clientset
cronjobConfig := rootClientBuilder.ConfigOrDie("cronjob-controller")
cronjobConfig.ContentConfig.GroupVersion = &schema.GroupVersion{Group: batch.GroupName, Version: "v2alpha1"}
go cronjob.NewCronJobController(clientset.NewForConfigOrDie(cronjobConfig)).Run(stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
alphaProvisioner, err := NewAlphaVolumeProvisioner(cloud, s.VolumeConfiguration)
if err != nil {
return fmt.Errorf("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)
}
params := persistentvolumecontroller.ControllerParameters{
KubeClient: clientBuilder.ClientOrDie("persistent-volume-binder"),
SyncPeriod: s.PVClaimBinderSyncPeriod.Duration,
AlphaProvisioner: alphaProvisioner,
VolumePlugins: ProbeControllerVolumePlugins(cloud, s.VolumeConfiguration),
Cloud: cloud,
ClusterName: s.ClusterName,
EnableDynamicProvisioning: s.VolumeConfiguration.EnableDynamicProvisioning,
}
volumeController := persistentvolumecontroller.NewController(params)
volumeController.Run(stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
attachDetachController, attachDetachControllerErr :=
attachdetach.NewAttachDetachController(
clientBuilder.ClientOrDie("attachdetach-controller"),
sharedInformers.Pods().Informer(),
sharedInformers.Nodes().Informer(),
sharedInformers.PersistentVolumeClaims().Informer(),
sharedInformers.PersistentVolumes().Informer(),
cloud,
ProbeAttachableVolumePlugins(s.VolumeConfiguration))
if attachDetachControllerErr != nil {
return fmt.Errorf("failed to start attach/detach controller: %v", attachDetachControllerErr)
}
go attachDetachController.Run(stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
if availableResources[schema.GroupVersionResource{Group: "certificates.k8s.io", Version: "v1alpha1", Resource: "certificatesigningrequests"}] {
glog.Infof("Starting certificate request controller")
resyncPeriod := ResyncPeriod(s)()
certController, err := certcontroller.NewCertificateController(
clientBuilder.ClientOrDie("certificate-controller"),
resyncPeriod,
s.ClusterSigningCertFile,
s.ClusterSigningKeyFile,
s.ApproveAllKubeletCSRsForGroup,
)
if err != nil {
glog.Errorf("Failed to start certificate controller: %v", err)
} else {
go certController.Run(1, stop)
}
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
}
go serviceaccountcontroller.NewServiceAccountsController(
sharedInformers.ServiceAccounts(), sharedInformers.Namespaces(),
clientBuilder.ClientOrDie("service-account-controller"),
serviceaccountcontroller.DefaultServiceAccountsControllerOptions(),
).Run(1, stop)
time.Sleep(wait.Jitter(s.ControllerStartInterval.Duration, ControllerStartJitter))
if s.EnableGarbageCollector {
gcClientset := clientBuilder.ClientOrDie("generic-garbage-collector")
groupVersionResources, err := gcClientset.Discovery().ServerPreferredResources()
if err != nil {
return fmt.Errorf("failed to get supported resources from server: %v", err)
}
config := rootClientBuilder.ConfigOrDie("generic-garbage-collector")
config.ContentConfig.NegotiatedSerializer = serializer.DirectCodecFactory{CodecFactory: metaonly.NewMetadataCodecFactory()}
metaOnlyClientPool := dynamic.NewClientPool(config, restMapper, dynamic.LegacyAPIPathResolverFunc)
config.ContentConfig = dynamic.ContentConfig()
clientPool := dynamic.NewClientPool(config, restMapper, dynamic.LegacyAPIPathResolverFunc)
garbageCollector, err := garbagecollector.NewGarbageCollector(metaOnlyClientPool, clientPool, restMapper, groupVersionResources)
if err != nil {
glog.Errorf("Failed to start the generic garbage collector: %v", err)
} else {
workers := int(s.ConcurrentGCSyncs)
go garbageCollector.Run(workers, stop)
}
}
sharedInformers.Start(stop)
select {}
}