Merge pull request kubernetes#95505 from wawa0210/fix-94490

Action Required: Windows hyper-v container featuregate is deprecated in 1.20 and will be removed in 1.21

Author: k8s-ci-robot

pkg/features/kube_features.go

@@ -206,6 +206,7 @@ const (
 	// alpha: v1.10
 	//
 	// Enable Hyper-V containers on Windows
+	// Deprecated in 1.20 and removed in 1.21
 	HyperVContainer featuregate.Feature = "HyperVContainer"
 
 	// owner: @mikedanese
@@ -677,7 +678,7 @@ var defaultKubernetesFeatureGates = map[featuregate.Feature]featuregate.FeatureS
 	StorageObjectInUseProtection:   {Default: true, PreRelease: featuregate.GA},
 	SupportPodPidsLimit:            {Default: true, PreRelease: featuregate.GA, LockToDefault: true}, // remove in 1.21
 	SupportNodePidsLimit:           {Default: true, PreRelease: featuregate.GA, LockToDefault: true}, // remove in 1.21
-	HyperVContainer:                {Default: false, PreRelease: featuregate.Alpha},
+	HyperVContainer:                {Default: false, PreRelease: featuregate.Deprecated},
 	TokenRequest:                   {Default: true, PreRelease: featuregate.Beta},
 	TokenRequestProjection:         {Default: true, PreRelease: featuregate.Beta},
 	BoundServiceAccountTokenVolume: {Default: false, PreRelease: featuregate.Alpha},

pkg/kubelet/apis/BUILD

@@ -19,6 +19,7 @@ go_library(
         "@io_bazel_rules_go//go/platform:windows": [
             "//pkg/features:go_default_library",
             "//staging/src/k8s.io/apiserver/pkg/util/feature:go_default_library",
+            "//vendor/k8s.io/klog/v2:go_default_library",
         ],
         "//conditions:default": [],
     }),

pkg/kubelet/apis/well_known_annotations_windows.go

@@ -20,6 +20,7 @@ package apis
 
 import (
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
+	"k8s.io/klog/v2"
 	"k8s.io/kubernetes/pkg/features"
 )
 
@@ -34,6 +35,8 @@ const (
 
 // ShouldIsolatedByHyperV returns true if a windows container should be run with hyperv isolation.
 func ShouldIsolatedByHyperV(annotations map[string]string) bool {
+	klog.Warningf("The hyper-v FeatureGate is deprecated in 1.20 and will be removed in 1.21")
+
 	if !utilfeature.DefaultFeatureGate.Enabled(features.HyperVContainer) {
 		return false
 	}