Merge pull request #13142 from jszczepkowski/exp-flag

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cmd/kube-controller-manager/app/controllermanager.go

@@ -35,6 +35,7 @@ import (
 	"k8s.io/kubernetes/pkg/client/unversioned/clientcmd"
 	clientcmdapi "k8s.io/kubernetes/pkg/client/unversioned/clientcmd/api"
 	"k8s.io/kubernetes/pkg/cloudprovider"
+	"k8s.io/kubernetes/pkg/controller/autoscaler"
 	"k8s.io/kubernetes/pkg/controller/endpoint"
 	"k8s.io/kubernetes/pkg/controller/namespace"
 	"k8s.io/kubernetes/pkg/controller/node"
@@ -51,9 +52,6 @@ import (
 	"github.com/golang/glog"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/spf13/pflag"
-
-	// TODO: Enable the code belowe when horizontal pod autoscaler controller is implemented.
-	// "k8s.io/kubernetes/pkg/controller/autoscaler"
 )
 
 // CMServer is the main context object for the controller manager.
@@ -69,6 +67,7 @@ type CMServer struct {
 	ResourceQuotaSyncPeriod           time.Duration
 	NamespaceSyncPeriod               time.Duration
 	PVClaimBinderSyncPeriod           time.Duration
+	HorizontalPodAutoscalerSyncPeriod time.Duration
 	RegisterRetryCount                int
 	NodeMonitorGracePeriod            time.Duration
 	NodeStartupGracePeriod            time.Duration
@@ -84,6 +83,7 @@ type CMServer struct {
 	ClusterCIDR                   net.IPNet
 	AllocateNodeCIDRs             bool
 	EnableProfiling               bool
+	EnableHorizontalPodAutoscaler bool
 
 	Master     string
 	Kubeconfig string
@@ -101,9 +101,11 @@ func NewCMServer() *CMServer {
 		ResourceQuotaSyncPeriod:           10 * time.Second,
 		NamespaceSyncPeriod:               5 * time.Minute,
 		PVClaimBinderSyncPeriod:           10 * time.Second,
+		HorizontalPodAutoscalerSyncPeriod: 1 * time.Minute,
 		RegisterRetryCount:                10,
 		PodEvictionTimeout:                5 * time.Minute,
 		ClusterName:                       "kubernetes",
+		EnableHorizontalPodAutoscaler:     false,
 	}
 	return &s
 }
@@ -123,6 +125,7 @@ func (s *CMServer) AddFlags(fs *pflag.FlagSet) {
 	fs.DurationVar(&s.ResourceQuotaSyncPeriod, "resource-quota-sync-period", s.ResourceQuotaSyncPeriod, "The period for syncing quota usage status in the system")
 	fs.DurationVar(&s.NamespaceSyncPeriod, "namespace-sync-period", s.NamespaceSyncPeriod, "The period for syncing namespace life-cycle updates")
 	fs.DurationVar(&s.PVClaimBinderSyncPeriod, "pvclaimbinder-sync-period", s.PVClaimBinderSyncPeriod, "The period for syncing persistent volumes and persistent volume claims")
+	fs.DurationVar(&s.HorizontalPodAutoscalerSyncPeriod, "horizontal-pod-autoscaler-sync-period", s.HorizontalPodAutoscalerSyncPeriod, "The period for syncing the number of pods in horizontal pod autoscaler.")
 	fs.DurationVar(&s.PodEvictionTimeout, "pod-eviction-timeout", s.PodEvictionTimeout, "The grace period for deleting pods on failed nodes.")
 	fs.Float32Var(&s.DeletingPodsQps, "deleting-pods-qps", 0.1, "Number of nodes per second on which pods are deleted in case of node failure.")
 	fs.IntVar(&s.DeletingPodsBurst, "deleting-pods-burst", 10, "Number of nodes on which pods are bursty deleted in case of node failure. For more details look into RateLimiter.")
@@ -145,6 +148,7 @@ func (s *CMServer) AddFlags(fs *pflag.FlagSet) {
 	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.RootCAFile, "root-ca-file", s.RootCAFile, "If set, this root certificate authority will be included in service account's token secret. This must be a valid PEM-encoded CA bundle.")
+	fs.BoolVar(&s.EnableHorizontalPodAutoscaler, "enable-horizontal-pod-autoscaler", s.EnableHorizontalPodAutoscaler, "Enables horizontal pod autoscaler (requires enabling experimental API on apiserver). NOT IMPLEMENTED YET!")
 }
 
 // Run runs the CMServer.  This should never exit.
@@ -267,13 +271,14 @@ func (s *CMServer) Run(_ []string) error {
 		serviceaccount.DefaultServiceAccountsControllerOptions(),
 	).Run()
 
-	// TODO: Enable the code belowe when horizontal pod autoscaler controller is implemented.
+	if s.EnableHorizontalPodAutoscaler {
-	// expClient, err := client.NewExperimental(kubeconfig)
+		expClient, err := client.NewExperimental(kubeconfig)
-	// if err != nil {
+		if err != nil {
-	// 	glog.Fatalf("Invalid API configuration: %v", err)
+			glog.Fatalf("Invalid API configuration: %v", err)
-	// }
+		}
-	// horizontalPodAutoscalerController := autoscalercontroller.New(kubeClient, expClient)
+		horizontalPodAutoscalerController := autoscalercontroller.New(kubeClient, expClient)
-	// horizontalPodAutoscalerController.Run(s.NodeSyncPeriod)
+		horizontalPodAutoscalerController.Run(s.HorizontalPodAutoscalerSyncPeriod)
+	}
 
 	select {}
 }

hack/verify-flags/known-flags.txt

@@ -65,6 +65,7 @@ dry-run
 duration-sec
 e2e-output-dir
 enable-debugging-handlers
+enable-horizontal-pod-autoscaler
 enable-server
 etcd-config
 etcd-prefix
@@ -96,6 +97,7 @@ grace-period
 ha-domain
 healthz-bind-address
 healthz-port
+horizontal-pod-autoscaler-sync-period
 hostname-override
 host-network-sources
 http-check-frequency