// 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 } kubeconfig.QPS = 20.0 kubeconfig.Burst = 30 kubeClient, err := client.New(kubeconfig) if err != nil { glog.Fatalf("Invalid API configuration: %v", err) } go func() { mux := http.NewServeMux() healthz.InstallHandler(mux) if s.EnableProfiling { 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()) }() endpoints := service.NewEndpointController(kubeClient) go endpoints.Run(s.ConcurrentEndpointSyncs, util.NeverStop) controllerManager := replicationControllerPkg.NewReplicationManager(kubeClient, replicationControllerPkg.BurstReplicas) go controllerManager.Run(s.ConcurrentRCSyncs, 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.RegisterRetryCount, s.PodEvictionTimeout, nodecontroller.NewPodEvictor(util.NewTokenBucketRateLimiter(s.DeletingPodsQps, s.DeletingPodsBurst)), s.NodeMonitorGracePeriod, s.NodeStartupGracePeriod, s.NodeMonitorPeriod, (*net.IPNet)(&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, (*net.IPNet)(&s.ClusterCIDR)) routeController.Run(s.NodeSyncPeriod) } } resourceQuotaManager := resourcequota.NewResourceQuotaManager(kubeClient) resourceQuotaManager.Run(s.ResourceQuotaSyncPeriod) namespaceManager := namespace.NewNamespaceManager(kubeClient, s.NamespaceSyncPeriod) namespaceManager.Run() pvclaimBinder := volumeclaimbinder.NewPersistentVolumeClaimBinder(kubeClient, s.PVClaimBinderSyncPeriod) pvclaimBinder.Run() pvRecycler, err := volumeclaimbinder.NewPersistentVolumeRecycler(kubeClient, s.PVClaimBinderSyncPeriod, ProbeRecyclableVolumePlugins()) 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 {} return nil }
// RunEndpointController starts the Kubernetes replication controller sync loop func (c *MasterConfig) RunEndpointController() { endpoints := service.NewEndpointController(c.KubeClient) go endpoints.Run(c.ControllerManager.ConcurrentEndpointSyncs, util.NeverStop) glog.Infof("Started Kubernetes Endpoint Controller") }