Windows node graceful shutdown

Author: zylxjtu

cmd/kubelet/app/init_windows.go

@@ -89,7 +89,7 @@ func initForOS(windowsService bool, windowsPriorityClass string) error {
 	}
 
 	if windowsService {
-		return service.InitService(serviceName)
+		return service.InitServiceWithShutdown(serviceName)
 	}
 	return nil
 }

pkg/features/kube_features.go

@@ -703,6 +703,13 @@ const (
 	// Allows kube-proxy to create DSR loadbalancers for Windows
 	WinDSR featuregate.Feature = "WinDSR"
 
+	// owner: @zylxjtu
+	// kep: https://kep.k8s.io/4802
+	// alpha: v1.32
+	//
+	// Enables support for graceful shutdown windows node.
+	WindowsGracefulNodeShutdown featuregate.Feature = "WindowsGracefulNodeShutdown"
+
 	// owner: @ksubrmnn
 	//
 	// Allows kube-proxy to run in Overlay mode for Windows

pkg/features/versioned_kube_features.go

@@ -762,7 +762,9 @@ var defaultVersionedKubernetesFeatureGates = map[featuregate.Feature]featuregate
 	WinDSR: {
 		{Version: version.MustParse("1.14"), Default: false, PreRelease: featuregate.Alpha},
 	},
-
+	WindowsGracefulNodeShutdown: {
+		{Version: version.MustParse("1.32"), Default: false, PreRelease: featuregate.Alpha},
+	},
 	WinOverlay: {
 		{Version: version.MustParse("1.14"), Default: false, PreRelease: featuregate.Alpha},
 		{Version: version.MustParse("1.20"), Default: true, PreRelease: featuregate.Beta},

pkg/kubelet/nodeshutdown/nodeshutdown_manager_others.go

@@ -1,5 +1,5 @@
-//go:build !linux
-// +build !linux
+//go:build !linux && !windows
+// +build !linux,!windows
 
 /*
 Copyright 2020 The Kubernetes Authors.
@@ -19,7 +19,7 @@ limitations under the License.
 
 package nodeshutdown
 
-// NewManager returns a fake node shutdown manager for non linux platforms.
+// NewManager returns a fake node shutdown manager for unsupported platforms.
 func NewManager(conf *Config) Manager {
 	m := managerStub{}
 	return m