Promote mount propagation to GA

pkg/features/kube_features.go

@@ -137,7 +137,7 @@ const (
 	TaintNodesByCondition utilfeature.Feature = "TaintNodesByCondition"
 
 	// owner: @jsafrane
-	// beta: v1.10
+	// GA: v1.12
 	//
 	// Enable mount propagation of volumes.
 	MountPropagation utilfeature.Feature = "MountPropagation"
@@ -377,7 +377,7 @@ var defaultKubernetesFeatureGates = map[utilfeature.Feature]utilfeature.FeatureS
 	PodPriority:                                 {Default: true, PreRelease: utilfeature.Beta},
 	EnableEquivalenceClassCache:                 {Default: false, PreRelease: utilfeature.Alpha},
 	TaintNodesByCondition:                       {Default: true, PreRelease: utilfeature.Beta},
-	MountPropagation:                            {Default: true, PreRelease: utilfeature.Beta},
+	MountPropagation:                            {Default: true, PreRelease: utilfeature.GA},
 	QOSReserved:                                 {Default: false, PreRelease: utilfeature.Alpha},
 	ExpandPersistentVolumes:                     {Default: true, PreRelease: utilfeature.Beta},
 	ExpandInUsePersistentVolumes:                {Default: false, PreRelease: utilfeature.Alpha},

pkg/kubelet/kubelet.go

@@ -756,6 +756,10 @@ func NewMainKubelet(kubeCfg *kubeletconfiginternal.KubeletConfiguration,
 
 	tokenManager := token.NewManager(kubeDeps.KubeClient)
 
+	if !utilfeature.DefaultFeatureGate.Enabled(features.MountPropagation) {
+		glog.Warning("Mount propagation feature gate has been deprecated and will be removed in the next release")
+	}
+
 	klet.volumePluginMgr, err =
 		NewInitializedVolumePluginMgr(klet, secretManager, configMapManager, tokenManager, kubeDeps.VolumePlugins, kubeDeps.DynamicPluginProber)
 	if err != nil {