Merge pull request #91863 from knabben/kubelet-memcg-notification

Moving Kubelet kernel-memgc-notification to configuration file

pkg/kubelet/apis/config/fuzzer/fuzzer.go

@@ -59,6 +59,7 @@ func Funcs(codecs runtimeserializer.CodecFactory) []interface{} {
 			obj.ImageMinimumGCAge = metav1.Duration{Duration: 2 * time.Minute}
 			obj.ImageGCHighThresholdPercent = 85
 			obj.ImageGCLowThresholdPercent = 80
+			obj.KernelMemcgNotification = false
 			obj.MaxOpenFiles = 1000000
 			obj.MaxPods = 110
 			obj.PodPidsLimit = -1

pkg/kubelet/apis/config/helpers_test.go

@@ -189,6 +189,7 @@ var (
 		"ImageGCHighThresholdPercent",
 		"ImageGCLowThresholdPercent",
 		"ImageMinimumGCAge.Duration",
+		"KernelMemcgNotification",
 		"KubeAPIBurst",
 		"KubeAPIQPS",
 		"KubeReservedCgroup",

pkg/kubelet/apis/config/types.go

@@ -321,6 +321,9 @@ type KubeletConfiguration struct {
 	// These sysctls are namespaced but not allowed by default.  For example: "kernel.msg*,net.ipv4.route.min_pmtu"
 	// +optional
 	AllowedUnsafeSysctls []string
+	// kernelMemcgNotification if enabled, the kubelet will integrate with the kernel memcg
+	// notification to determine if memory eviction thresholds are crossed rather than polling.
+	KernelMemcgNotification bool
 
 	/* the following fields are meant for Node Allocatable */
 

pkg/kubelet/apis/config/v1beta1/zz_generated.conversion.go

@@ -341,6 +341,7 @@ func autoConvert_v1beta1_KubeletConfiguration_To_config_KubeletConfiguration(in
 	out.AllowedUnsafeSysctls = *(*[]string)(unsafe.Pointer(&in.AllowedUnsafeSysctls))
 	out.VolumePluginDir = in.VolumePluginDir
 	out.ProviderID = in.ProviderID
+	out.KernelMemcgNotification = in.KernelMemcgNotification
 	return nil
 }
 
@@ -477,6 +478,7 @@ func autoConvert_config_KubeletConfiguration_To_v1beta1_KubeletConfiguration(in
 	}
 	out.ConfigMapAndSecretChangeDetectionStrategy = v1beta1.ResourceChangeDetectionStrategy(in.ConfigMapAndSecretChangeDetectionStrategy)
 	out.AllowedUnsafeSysctls = *(*[]string)(unsafe.Pointer(&in.AllowedUnsafeSysctls))
+	out.KernelMemcgNotification = in.KernelMemcgNotification
 	out.SystemReserved = *(*map[string]string)(unsafe.Pointer(&in.SystemReserved))
 	out.KubeReserved = *(*map[string]string)(unsafe.Pointer(&in.KubeReserved))
 	out.SystemReservedCgroup = in.SystemReservedCgroup