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Feature Gates (removed)

This page contains list of feature gates that have been removed. The information on this page is for reference. A removed feature gate is different from a GA'ed or deprecated one in that a removed one is no longer recognized as a valid feature gate. However, a GA'ed or a deprecated feature gate is still recognized by the corresponding Kubernetes components although they are unable to cause any behavior differences in a cluster.

For feature gates that are still recognized by the Kubernetes components, please refer to the Alpha/Beta feature gate table or the Graduated/Deprecated feature gate table

Feature gates that are removed

In the following table:

The "From" column contains the Kubernetes release when a feature is introduced or its release stage is changed.
The "To" column, if not empty, contains the last Kubernetes release in which you can still use a feature gate. If the feature stage is either "Deprecated" or "GA", the "To" column is the Kubernetes release when the feature is removed.

Feature Gates Removed
Feature	Default	Stage	From	To
`Accelerators`	`false`	Alpha	1.6	1.10
`Accelerators`	-	Deprecated	1.11	1.11
`AffinityInAnnotations`	`false`	Alpha	1.6	1.7
`AffinityInAnnotations`	-	Deprecated	1.8	1.8
`AllowExtTrafficLocalEndpoints`	`false`	Beta	1.4	1.6
`AllowExtTrafficLocalEndpoints`	`true`	GA	1.7	1.9
`AttachVolumeLimit`	`false`	Alpha	1.11	1.11
`AttachVolumeLimit`	`true`	Beta	1.12	1.16
`AttachVolumeLimit`	`true`	GA	1.17	1.21
`BalanceAttachedNodeVolumes`	`false`	Alpha	1.11	1.21
`BalanceAttachedNodeVolumes`	`false`	Deprecated	1.22	1.22
`BlockVolume`	`false`	Alpha	1.9	1.12
`BlockVolume`	`true`	Beta	1.13	1.17
`BlockVolume`	`true`	GA	1.18	1.21
`BoundServiceAccountTokenVolume`	`false`	Alpha	1.13	1.20
`BoundServiceAccountTokenVolume`	`true`	Beta	1.21	1.21
`BoundServiceAccountTokenVolume`	`true`	GA	1.22	1.23
`CRIContainerLogRotation`	`false`	Alpha	1.10	1.10
`CRIContainerLogRotation`	`true`	Beta	1.11	1.20
`CRIContainerLogRotation`	`true`	GA	1.21	1.22
`CSIBlockVolume`	`false`	Alpha	1.11	1.13
`CSIBlockVolume`	`true`	Beta	1.14	1.17
`CSIBlockVolume`	`true`	GA	1.18	1.21
`CSIDriverRegistry`	`false`	Alpha	1.12	1.13
`CSIDriverRegistry`	`true`	Beta	1.14	1.17
`CSIDriverRegistry`	`true`	GA	1.18	1.21
`CSIMigrationAWSComplete`	`false`	Alpha	1.17	1.20
`CSIMigrationAWSComplete`	-	Deprecated	1.21	1.21
`CSIMigrationAzureDiskComplete`	`false`	Alpha	1.17	1.20
`CSIMigrationAzureDiskComplete`	-	Deprecated	1.21	1.21
`CSIMigrationAzureFileComplete`	`false`	Alpha	1.17	1.20
`CSIMigrationAzureFileComplete`	-	Deprecated	1.21	1.21
`CSIMigrationGCEComplete`	`false`	Alpha	1.17	1.20
`CSIMigrationGCEComplete`	-	Deprecated	1.21	1.21
`CSIMigrationOpenStackComplete`	`false`	Alpha	1.17	1.20
`CSIMigrationOpenStackComplete`	-	Deprecated	1.21	1.21
`CSIMigrationvSphereComplete`	`false`	Beta	1.19	1.21
`CSIMigrationvSphereComplete`	-	Deprecated	1.22	1.22
`CSINodeInfo`	`false`	Alpha	1.12	1.13
`CSINodeInfo`	`true`	Beta	1.14	1.16
`CSINodeInfo`	`true`	GA	1.17	1.22
`CSIPersistentVolume`	`false`	Alpha	1.9	1.9
`CSIPersistentVolume`	`true`	Beta	1.10	1.12
`CSIPersistentVolume`	`true`	GA	1.13	1.16
`CSIServiceAccountToken`	`false`	Alpha	1.20	1.20
`CSIServiceAccountToken`	`true`	Beta	1.21	1.21
`CSIServiceAccountToken`	`true`	GA	1.22	1.24
`CSIVolumeFSGroupPolicy`	`false`	Alpha	1.19	1.19
`CSIVolumeFSGroupPolicy`	`true`	Beta	1.20	1.22
`CSIVolumeFSGroupPolicy`	`true`	GA	1.23	1.25
`ConfigurableFSGroupPolicy`	`false`	Alpha	1.18	1.19
`ConfigurableFSGroupPolicy`	`true`	Beta	1.20	1.22
`ConfigurableFSGroupPolicy`	`true`	GA	1.23	1.25
`CronJobControllerV2`	`false`	Alpha	1.20	1.20
`CronJobControllerV2`	`true`	Beta	1.21	1.21
`CronJobControllerV2`	`true`	GA	1.22	1.23
`CustomPodDNS`	`false`	Alpha	1.9	1.9
`CustomPodDNS`	`true`	Beta	1.10	1.13
`CustomPodDNS`	`true`	GA	1.14	1.16
`CustomResourceDefaulting`	`false`	Alpha	1.15	1.15
`CustomResourceDefaulting`	`true`	Beta	1.16	1.16
`CustomResourceDefaulting`	`true`	GA	1.17	1.18
`CustomResourcePublishOpenAPI`	`false`	Alpha	1.14	1.14
`CustomResourcePublishOpenAPI`	`true`	Beta	1.15	1.15
`CustomResourcePublishOpenAPI`	`true`	GA	1.16	1.18
`CustomResourceSubresources`	`false`	Alpha	1.10	1.10
`CustomResourceSubresources`	`true`	Beta	1.11	1.15
`CustomResourceSubresources`	`true`	GA	1.16	1.18
`CustomResourceValidation`	`false`	Alpha	1.8	1.8
`CustomResourceValidation`	`true`	Beta	1.9	1.15
`CustomResourceValidation`	`true`	GA	1.16	1.18
`CustomResourceWebhookConversion`	`false`	Alpha	1.13	1.14
`CustomResourceWebhookConversion`	`true`	Beta	1.15	1.15
`CustomResourceWebhookConversion`	`true`	GA	1.16	1.18
`DynamicAuditing`	`false`	Alpha	1.13	1.18
`DynamicAuditing`	-	Deprecated	1.19	1.19
`DynamicProvisioningScheduling`	`false`	Alpha	1.11	1.11
`DynamicProvisioningScheduling`	-	Deprecated	1.12	-
`DynamicVolumeProvisioning`	`true`	Alpha	1.3	1.7
`DynamicVolumeProvisioning`	`true`	GA	1.8	1.12
`EnableAggregatedDiscoveryTimeout`	`true`	Deprecated	1.16	1.17
`EnableEquivalenceClassCache`	`false`	Alpha	1.8	1.12
`EnableEquivalenceClassCache`	-	Deprecated	1.13	1.23
`EndpointSlice`	`false`	Alpha	1.16	1.16
`EndpointSlice`	`false`	Beta	1.17	1.17
`EndpointSlice`	`true`	Beta	1.18	1.20
`EndpointSlice`	`true`	GA	1.21	1.24
`EndpointSliceNodeName`	`false`	Alpha	1.20	1.20
`EndpointSliceNodeName`	`true`	GA	1.21	1.24
`EndpointSliceProxying`	`false`	Alpha	1.18	1.18
`EndpointSliceProxying`	`true`	Beta	1.19	1.21
`EndpointSliceProxying`	`true`	GA	1.22	1.24
`EvenPodsSpread`	`false`	Alpha	1.16	1.17
`EvenPodsSpread`	`true`	Beta	1.18	1.18
`EvenPodsSpread`	`true`	GA	1.19	1.21
`ExperimentalCriticalPodAnnotation`	`false`	Alpha	1.5	1.12
`ExperimentalCriticalPodAnnotation`	`false`	Deprecated	1.13	1.16
`ExternalPolicyForExternalIP`	`true`	GA	1.18	1.22
`GCERegionalPersistentDisk`	`true`	Beta	1.10	1.12
`GCERegionalPersistentDisk`	`true`	GA	1.13	1.16
`GenericEphemeralVolume`	`false`	Alpha	1.19	1.20
`GenericEphemeralVolume`	`true`	Beta	1.21	1.22
`GenericEphemeralVolume`	`true`	GA	1.23	1.24
`HugePageStorageMediumSize`	`false`	Alpha	1.18	1.18
`HugePageStorageMediumSize`	`true`	Beta	1.19	1.21
`HugePageStorageMediumSize`	`true`	GA	1.22	1.24
`HugePages`	`false`	Alpha	1.8	1.9
`HugePages`	`true`	Beta	1.10	1.13
`HugePages`	`true`	GA	1.14	1.16
`HyperVContainer`	`false`	Alpha	1.10	1.19
`HyperVContainer`	`false`	Deprecated	1.20	1.20
`IPv6DualStack`	`false`	Alpha	1.15	1.20
`IPv6DualStack`	`true`	Beta	1.21	1.22
`IPv6DualStack`	`true`	GA	1.23	1.24
`ImmutableEphemeralVolumes`	`false`	Alpha	1.18	1.18
`ImmutableEphemeralVolumes`	`true`	Beta	1.19	1.20
`ImmutableEphemeralVolumes`	`true`	GA	1.21	1.24
`IngressClassNamespacedParams`	`false`	Alpha	1.21	1.21
`IngressClassNamespacedParams`	`true`	Beta	1.22	1.22
`IngressClassNamespacedParams`	`true`	GA	1.23	1.24
`Initializers`	`false`	Alpha	1.7	1.13
`Initializers`	-	Deprecated	1.14	1.14
`KubeletConfigFile`	`false`	Alpha	1.8	1.9
`KubeletConfigFile`	-	Deprecated	1.10	1.10
`KubeletPluginsWatcher`	`false`	Alpha	1.11	1.11
`KubeletPluginsWatcher`	`true`	Beta	1.12	1.12
`KubeletPluginsWatcher`	`true`	GA	1.13	1.16
`LegacyNodeRoleBehavior`	`false`	Alpha	1.16	1.18
`LegacyNodeRoleBehavior`	`true`	Beta	1.19	1.20
`LegacyNodeRoleBehavior`	`false`	GA	1.21	1.22
`MountContainers`	`false`	Alpha	1.9	1.16
`MountContainers`	`false`	Deprecated	1.17	1.17
`MountPropagation`	`false`	Alpha	1.8	1.9
`MountPropagation`	`true`	Beta	1.10	1.11
`MountPropagation`	`true`	GA	1.12	1.14
`NamespaceDefaultLabelName`	`true`	Beta	1.21	1.21
`NamespaceDefaultLabelName`	`true`	GA	1.22	1.23
`NodeDisruptionExclusion`	`false`	Alpha	1.16	1.18
`NodeDisruptionExclusion`	`true`	Beta	1.19	1.20
`NodeDisruptionExclusion`	`true`	GA	1.21	1.22
`NodeLease`	`false`	Alpha	1.12	1.13
`NodeLease`	`true`	Beta	1.14	1.16
`NodeLease`	`true`	GA	1.17	1.23
`PVCProtection`	`false`	Alpha	1.9	1.9
`PVCProtection`	-	Deprecated	1.10	1.10
`PersistentLocalVolumes`	`false`	Alpha	1.7	1.9
`PersistentLocalVolumes`	`true`	Beta	1.10	1.13
`PersistentLocalVolumes`	`true`	GA	1.14	1.16
`PodDisruptionBudget`	`false`	Alpha	1.3	1.4
`PodDisruptionBudget`	`true`	Beta	1.5	1.20
`PodDisruptionBudget`	`true`	GA	1.21	1.25
`PodPriority`	`false`	Alpha	1.8	1.10
`PodPriority`	`true`	Beta	1.11	1.13
`PodPriority`	`true`	GA	1.14	1.18
`PodReadinessGates`	`false`	Alpha	1.11	1.11
`PodReadinessGates`	`true`	Beta	1.12	1.13
`PodReadinessGates`	`true`	GA	1.14	1.16
`PodShareProcessNamespace`	`false`	Alpha	1.10	1.11
`PodShareProcessNamespace`	`true`	Beta	1.12	1.16
`PodShareProcessNamespace`	`true`	GA	1.17	1.19
`RequestManagement`	`false`	Alpha	1.15	1.16
`RequestManagement`	-	Deprecated	1.17	1.17
`ResourceLimitsPriorityFunction`	`false`	Alpha	1.9	1.18
`ResourceLimitsPriorityFunction`	-	Deprecated	1.19	1.19
`ResourceQuotaScopeSelectors`	`false`	Alpha	1.11	1.11
`ResourceQuotaScopeSelectors`	`true`	Beta	1.12	1.16
`ResourceQuotaScopeSelectors`	`true`	GA	1.17	1.18
`RootCAConfigMap`	`false`	Alpha	1.13	1.19
`RootCAConfigMap`	`true`	Beta	1.20	1.20
`RootCAConfigMap`	`true`	GA	1.21	1.22
`RotateKubeletClientCertificate`	`true`	Beta	1.8	1.18
`RotateKubeletClientCertificate`	`true`	GA	1.19	1.21
`RunAsGroup`	`true`	Beta	1.14	1.20
`RunAsGroup`	`true`	GA	1.21	1.22
`RuntimeClass`	`false`	Alpha	1.12	1.13
`RuntimeClass`	`true`	Beta	1.14	1.19
`RuntimeClass`	`true`	GA	1.20	1.24
`SCTPSupport`	`false`	Alpha	1.12	1.18
`SCTPSupport`	`true`	Beta	1.19	1.19
`SCTPSupport`	`true`	GA	1.20	1.22
`ScheduleDaemonSetPods`	`false`	Alpha	1.11	1.11
`ScheduleDaemonSetPods`	`true`	Beta	1.12	1.16
`ScheduleDaemonSetPods`	`true`	GA	1.17	1.18
`SelectorIndex`	`false`	Alpha	1.18	1.18
`SelectorIndex`	`true`	Beta	1.19	1.19
`SelectorIndex`	`true`	GA	1.20	1.25
`ServiceAccountIssuerDiscovery`	`false`	Alpha	1.18	1.19
`ServiceAccountIssuerDiscovery`	`true`	Beta	1.20	1.20
`ServiceAccountIssuerDiscovery`	`true`	GA	1.21	1.23
`ServiceAppProtocol`	`false`	Alpha	1.18	1.18
`ServiceAppProtocol`	`true`	Beta	1.19	1.19
`ServiceAppProtocol`	`true`	GA	1.20	1.22
`ServiceLoadBalancerFinalizer`	`false`	Alpha	1.15	1.15
`ServiceLoadBalancerFinalizer`	`true`	Beta	1.16	1.16
`ServiceLoadBalancerFinalizer`	`true`	GA	1.17	1.20
`ServiceNodeExclusion`	`false`	Alpha	1.8	1.18
`ServiceNodeExclusion`	`true`	Beta	1.19	1.20
`ServiceNodeExclusion`	`true`	GA	1.21	1.22
`ServiceTopology`	`false`	Alpha	1.17	1.19
`ServiceTopology`	`false`	Deprecated	1.20	1.22
`SetHostnameAsFQDN`	`false`	Alpha	1.19	1.19
`SetHostnameAsFQDN`	`true`	Beta	1.20	1.21
`SetHostnameAsFQDN`	`true`	GA	1.22	1,24
`StartupProbe`	`false`	Alpha	1.16	1.17
`StartupProbe`	`true`	Beta	1.18	1.19
`StartupProbe`	`true`	GA	1.20	1.23
`StorageObjectInUseProtection`	`true`	Beta	1.10	1.10
`StorageObjectInUseProtection`	`true`	GA	1.11	1.24
`StreamingProxyRedirects`	`false`	Beta	1.5	1.5
`StreamingProxyRedirects`	`true`	Beta	1.6	1.17
`StreamingProxyRedirects`	`true`	Deprecated	1.18	1.21
`StreamingProxyRedirects`	`false`	Deprecated	1.22	1.24
`SupportIPVSProxyMode`	`false`	Alpha	1.8	1.8
`SupportIPVSProxyMode`	`false`	Beta	1.9	1.9
`SupportIPVSProxyMode`	`true`	Beta	1.10	1.10
`SupportIPVSProxyMode`	`true`	GA	1.11	1.20
`SupportNodePidsLimit`	`false`	Alpha	1.14	1.14
`SupportNodePidsLimit`	`true`	Beta	1.15	1.19
`SupportNodePidsLimit`	`true`	GA	1.20	1.23
`SupportPodPidsLimit`	`false`	Alpha	1.10	1.13
`SupportPodPidsLimit`	`true`	Beta	1.14	1.19
`SupportPodPidsLimit`	`true`	GA	1.20	1.23
`Sysctls`	`true`	Beta	1.11	1.20
`Sysctls`	`true`	GA	1.21	1.22
`TTLAfterFinished`	`false`	Alpha	1.12	1.20
`TTLAfterFinished`	`true`	Beta	1.21	1.22
`TTLAfterFinished`	`true`	GA	1.23	1.24
`TaintBasedEvictions`	`false`	Alpha	1.6	1.12
`TaintBasedEvictions`	`true`	Beta	1.13	1.17
`TaintBasedEvictions`	`true`	GA	1.18	1.20
`TaintNodesByCondition`	`false`	Alpha	1.8	1.11
`TaintNodesByCondition`	`true`	Beta	1.12	1.16
`TaintNodesByCondition`	`true`	GA	1.17	1.18
`TokenRequest`	`false`	Alpha	1.10	1.11
`TokenRequest`	`true`	Beta	1.12	1.19
`TokenRequest`	`true`	GA	1.20	1.21
`TokenRequestProjection`	`false`	Alpha	1.11	1.11
`TokenRequestProjection`	`true`	Beta	1.12	1.19
`TokenRequestProjection`	`true`	GA	1.20	1.21
`ValidateProxyRedirects`	`false`	Alpha	1.12	1.13
`ValidateProxyRedirects`	`true`	Beta	1.14	1.21
`ValidateProxyRedirects`	`true`	Deprecated	1.22	1.24
`VolumePVCDataSource`	`false`	Alpha	1.15	1.15
`VolumePVCDataSource`	`true`	Beta	1.16	1.17
`VolumePVCDataSource`	`true`	GA	1.18	1.21
`VolumeScheduling`	`false`	Alpha	1.9	1.9
`VolumeScheduling`	`true`	Beta	1.10	1.12
`VolumeScheduling`	`true`	GA	1.13	1.16
`VolumeSnapshotDataSource`	`false`	Alpha	1.12	1.16
`VolumeSnapshotDataSource`	`true`	Beta	1.17	1.19
`VolumeSnapshotDataSource`	`true`	GA	1.20	1.22
`VolumeSubpath`	`true`	GA	1.10	1.24
`VolumeSubpathEnvExpansion`	`false`	Alpha	1.14	1.14
`VolumeSubpathEnvExpansion`	`true`	Beta	1.15	1.16
`VolumeSubpathEnvExpansion`	`true`	GA	1.17	1.24
`WarningHeaders`	`true`	Beta	1.19	1.21
`WarningHeaders`	`true`	GA	1.22	1.24
`WindowsEndpointSliceProxying`	`false`	Alpha	1.19	1.20
`WindowsEndpointSliceProxying`	`true`	Beta	1.21	1.21
`WindowsEndpointSliceProxying`	`true`	GA	1.22	1.24
`WindowsGMSA`	`false`	Alpha	1.14	1.15
`WindowsGMSA`	`true`	Beta	1.16	1.17
`WindowsGMSA`	`true`	GA	1.18	1.20
`WindowsRunAsUserName`	`false`	Alpha	1.16	1.16
`WindowsRunAsUserName`	`true`	Beta	1.17	1.17
`WindowsRunAsUserName`	`true`	GA	1.18	1.20

Descriptions for removed feature gates

Accelerators: Provided an early form of plugin to enable Nvidia GPU support when using Docker Engine; no longer available. See Device Plugins for an alternative.
AffinityInAnnotations: Enable setting Pod affinity or anti-affinity.
AllowExtTrafficLocalEndpoints: Enable a service to route external requests to node local endpoints.
AttachVolumeLimit: Enable volume plugins to report limits on number of volumes that can be attached to a node. See dynamic volume limits for more details.
BalanceAttachedNodeVolumes: Include volume count on node to be considered for balanced resource allocation while scheduling. A node which has closer CPU, memory utilization, and volume count is favored by the scheduler while making decisions.
BlockVolume: Enable the definition and consumption of raw block devices in Pods. See Raw Block Volume Support for more details.
BoundServiceAccountTokenVolume: Migrate ServiceAccount volumes to use a projected volume consisting of a ServiceAccountTokenVolumeProjection. Cluster admins can use metric serviceaccount_stale_tokens_total to monitor workloads that are depending on the extended tokens. If there are no such workloads, turn off extended tokens by starting kube-apiserver with flag --service-account-extend-token-expiration=false. Check Bound Service Account Tokens for more details.
CRIContainerLogRotation: Enable container log rotation for CRI container runtime. The default max size of a log file is 10MB and the default max number of log files allowed for a container is 5. These values can be configured in the kubelet config. See logging at node level for more details.
CSIBlockVolume: Enable external CSI volume drivers to support block storage. See csi raw block volume support for more details.
CSIDriverRegistry: Enable all logic related to the CSIDriver API object in csi.storage.k8s.io.
CSIMigrationAWSComplete: Stops registering the EBS in-tree plugin in kubelet and volume controllers and enables shims and translation logic to route volume operations from the AWS-EBS in-tree plugin to EBS CSI plugin. Requires CSIMigration and CSIMigrationAWS feature flags enabled and EBS CSI plugin installed and configured on all nodes in the cluster. This flag has been deprecated in favor of the InTreePluginAWSUnregister feature flag which prevents the registration of in-tree EBS plugin.
CSIMigrationAzureDiskComplete: Stops registering the Azure-Disk in-tree plugin in kubelet and volume controllers and enables shims and translation logic to route volume operations from the Azure-Disk in-tree plugin to AzureDisk CSI plugin. Requires CSIMigration and CSIMigrationAzureDisk feature flags enabled and AzureDisk CSI plugin installed and configured on all nodes in the cluster. This flag has been deprecated in favor of the InTreePluginAzureDiskUnregister feature flag which prevents the registration of in-tree AzureDisk plugin.
CSIMigrationAzureFileComplete: Stops registering the Azure-File in-tree plugin in kubelet and volume controllers and enables shims and translation logic to route volume operations from the Azure-File in-tree plugin to AzureFile CSI plugin. Requires CSIMigration and CSIMigrationAzureFile feature flags enabled and AzureFile CSI plugin installed and configured on all nodes in the cluster. This flag has been deprecated in favor of the InTreePluginAzureFileUnregister feature flag which prevents the registration of in-tree AzureFile plugin.
CSIMigrationGCEComplete: Stops registering the GCE-PD in-tree plugin in kubelet and volume controllers and enables shims and translation logic to route volume operations from the GCE-PD in-tree plugin to PD CSI plugin. Requires CSIMigration and CSIMigrationGCE feature flags enabled and PD CSI plugin installed and configured on all nodes in the cluster. This flag has been deprecated in favor of the InTreePluginGCEUnregister feature flag which prevents the registration of in-tree GCE PD plugin.
CSIMigrationOpenStackComplete: Stops registering the Cinder in-tree plugin in kubelet and volume controllers and enables shims and translation logic to route volume operations from the Cinder in-tree plugin to Cinder CSI plugin. Requires CSIMigration and CSIMigrationOpenStack feature flags enabled and Cinder CSI plugin installed and configured on all nodes in the cluster. This flag has been deprecated in favor of the InTreePluginOpenStackUnregister feature flag which prevents the registration of in-tree openstack cinder plugin.
CSIMigrationvSphereComplete: Stops registering the vSphere in-tree plugin in kubelet and volume controllers and enables shims and translation logic to route volume operations from the vSphere in-tree plugin to vSphere CSI plugin. Requires CSIMigration and CSIMigrationvSphere feature flags enabled and vSphere CSI plugin installed and configured on all nodes in the cluster. This flag has been deprecated in favor of the InTreePluginvSphereUnregister feature flag which prevents the registration of in-tree vsphere plugin.
CSINodeInfo: Enable all logic related to the CSINodeInfo API object in csi.storage.k8s.io.
CSIPersistentVolume: Enable discovering and mounting volumes provisioned through a CSI (Container Storage Interface) compatible volume plugin.
CSIServiceAccountToken: Enable CSI drivers to receive the pods' service account token that they mount volumes for. See Token Requests.
CSIVolumeFSGroupPolicy: Allows CSIDrivers to use the fsGroupPolicy field. This field controls whether volumes created by a CSIDriver support volume ownership and permission modifications when these volumes are mounted.
ConfigurableFSGroupPolicy: Allows user to configure volume permission change policy for fsGroups when mounting a volume in a Pod. See Configure volume permission and ownership change policy for Pods for more details.
CronJobControllerV2: Use an alternative implementation of the CronJob controller. Otherwise, version 1 of the same controller is selected.
CustomPodDNS: Enable customizing the DNS settings for a Pod using its dnsConfig property. Check Pod's DNS Config for more details.
CustomResourceDefaulting: Enable CRD support for default values in OpenAPI v3 validation schemas.
CustomResourcePublishOpenAPI: Enables publishing of CRD OpenAPI specs.
CustomResourceSubresources: Enable /status and /scale subresources on resources created from CustomResourceDefinition.
CustomResourceValidation: Enable schema based validation on resources created from CustomResourceDefinition.
CustomResourceWebhookConversion: Enable webhook-based conversion on resources created from CustomResourceDefinition.
DynamicAuditing: Used to enable dynamic auditing before v1.19.
DynamicProvisioningScheduling: Extend the default scheduler to be aware of volume topology and handle PV provisioning. This feature was superseded by the VolumeScheduling feature in v1.12.
DynamicVolumeProvisioning: Enable the dynamic provisioning of persistent volumes to Pods.
EnableAggregatedDiscoveryTimeout: Enable the five second timeout on aggregated discovery calls.
EnableEquivalenceClassCache: Enable the scheduler to cache equivalence of nodes when scheduling Pods.
EndpointSlice: Enables EndpointSlices for more scalable and extensible network endpoints. See Enabling EndpointSlices.
EndpointSliceNodeName: Enables EndpointSlice nodeName field.
EndpointSliceProxying: When enabled, kube-proxy running on Linux will use EndpointSlices as the primary data source instead of Endpoints, enabling scalability and performance improvements. See Enabling Endpoint Slices.
EvenPodsSpread: Enable pods to be scheduled evenly across topology domains. See Pod Topology Spread Constraints.
ExperimentalCriticalPodAnnotation: Enable annotating specific pods as critical so that their scheduling is guaranteed. This feature is deprecated by Pod Priority and Preemption as of v1.13.
ExternalPolicyForExternalIP: Fix a bug where ExternalTrafficPolicy is not applied to Service ExternalIPs.
GCERegionalPersistentDisk: Enable the regional PD feature on GCE.
GenericEphemeralVolume: Enables ephemeral, inline volumes that support all features of normal volumes (can be provided by third-party storage vendors, storage capacity tracking, restore from snapshot, etc.). See Ephemeral Volumes.
HugePageStorageMediumSize: Enable support for multiple sizes pre-allocated huge pages.
HugePages: Enable the allocation and consumption of pre-allocated huge pages.
HyperVContainer: Enable Hyper-V isolation for Windows containers.
IPv6DualStack: Enable dual stack support for IPv6.
ImmutableEphemeralVolumes: Allows for marking individual Secrets and ConfigMaps as immutable for better safety and performance.
IngressClassNamespacedParams: Allow namespace-scoped parameters reference in IngressClass resource. This feature adds two fields - Scope and Namespace to IngressClass.spec.parameters.
Initializers: Allow asynchronous coordination of object creation using the Initializers admission plugin.
KubeletConfigFile: Enable loading kubelet configuration from a file specified using a config file. See setting kubelet parameters via a config file for more details.
KubeletPluginsWatcher: Enable probe-based plugin watcher utility to enable kubelet to discover plugins such as CSI volume drivers.
LegacyNodeRoleBehavior: When disabled, legacy behavior in service load balancers and node disruption will ignore the node-role.kubernetes.io/master label in favor of the feature-specific labels provided by NodeDisruptionExclusion and ServiceNodeExclusion.
MountContainers: Enable using utility containers on host as the volume mounter.
MountPropagation: Enable sharing volume mounted by one container to other containers or pods. For more details, please see mount propagation.
NamespaceDefaultLabelName: Configure the API Server to set an immutable label kubernetes.io/metadata.name on all namespaces, containing the namespace name.
NodeDisruptionExclusion: Enable use of the Node label node.kubernetes.io/exclude-disruption which prevents nodes from being evacuated during zone failures.
NodeLease: Enable the new Lease API to report node heartbeats, which could be used as a node health signal.
PVCProtection: Enable the prevention of a PersistentVolumeClaim (PVC) from being deleted when it is still used by any Pod.
PersistentLocalVolumes: Enable the usage of local volume type in Pods. Pod affinity has to be specified if requesting a local volume.
PodDisruptionBudget: Enable the PodDisruptionBudget feature.
PodPriority: Enable the descheduling and preemption of Pods based on their priorities.
PodReadinessGates: Enable the setting of PodReadinessGate field for extending Pod readiness evaluation. See Pod readiness gate for more details.
PodShareProcessNamespace: Enable the setting of shareProcessNamespace in a Pod for sharing a single process namespace between containers running in a pod. More details can be found in Share Process Namespace between Containers in a Pod.
RequestManagement: Enables managing request concurrency with prioritization and fairness at each API server. Deprecated by APIPriorityAndFairness since 1.17.
ResourceLimitsPriorityFunction: Enable a scheduler priority function that assigns a lowest possible score of 1 to a node that satisfies at least one of the input Pod's cpu and memory limits. The intent is to break ties between nodes with same scores.
ResourceQuotaScopeSelectors: Enable resource quota scope selectors.
RootCAConfigMap: Configure the kube-controller-manager to publish a ConfigMap named kube-root-ca.crt to every namespace. This ConfigMap contains a CA bundle used for verifying connections to the kube-apiserver. See Bound Service Account Tokens for more details.
RotateKubeletClientCertificate: Enable the rotation of the client TLS certificate on the kubelet. See kubelet configuration for more details.
RunAsGroup: Enable control over the primary group ID set on the init processes of containers.
RuntimeClass: Enable the RuntimeClass feature for selecting container runtime configurations.
SCTPSupport: Enables the SCTP protocol value in Pod, Service, Endpoints, EndpointSlice, and NetworkPolicy definitions.
ScheduleDaemonSetPods: Enable DaemonSet Pods to be scheduled by the default scheduler instead of the DaemonSet controller.
SelectorIndex: Allows label and field based indexes in API server watch cache to accelerate list operations.
ServiceAccountIssuerDiscovery: Enable OIDC discovery endpoints (issuer and JWKS URLs) for the service account issuer in the API server. See Configure Service Accounts for Pods for more details.
ServiceAppProtocol: Enables the appProtocol field on Services and Endpoints.
ServiceLoadBalancerFinalizer: Enable finalizer protection for Service load balancers.
ServiceNodeExclusion: Enable the exclusion of nodes from load balancers created by a cloud provider. A node is eligible for exclusion if labelled with "node.kubernetes.io/exclude-from-external-load-balancers".
ServiceTopology: Enable service to route traffic based upon the Node topology of the cluster. See ServiceTopology for more details.
SetHostnameAsFQDN: Enable the ability of setting Fully Qualified Domain Name(FQDN) as the hostname of a pod. See Pod's setHostnameAsFQDN field.
StartupProbe: Enable the startup probe in the kubelet.
StorageObjectInUseProtection: Postpone the deletion of PersistentVolume or PersistentVolumeClaim objects if they are still being used.
StreamingProxyRedirects: Instructs the API server to intercept (and follow) redirects from the backend (kubelet) for streaming requests. Examples of streaming requests include the exec, attach and port-forward requests.
SupportIPVSProxyMode: Enable providing in-cluster service load balancing using IPVS. See service proxies for more details.
SupportNodePidsLimit: Enable the support to limiting PIDs on the Node. The parameter pid=<number> in the --system-reserved and --kube-reserved options can be specified to ensure that the specified number of process IDs will be reserved for the system as a whole and for Kubernetes system daemons respectively.
SupportPodPidsLimit: Enable the support to limiting PIDs in Pods.
Sysctls: Enable support for namespaced kernel parameters (sysctls) that can be set for each pod. See sysctls for more details.
TTLAfterFinished: Allow a TTL controller to clean up resources after they finish execution.
TaintBasedEvictions: Enable evicting pods from nodes based on taints on Nodes and tolerations on Pods. See taints and tolerations for more details.
TaintNodesByCondition: Enable automatic tainting nodes based on node conditions.
TokenRequest: Enable the TokenRequest endpoint on service account resources.
TokenRequestProjection: Enable the injection of service account tokens into a Pod through a projected volume.
ValidateProxyRedirects: This flag controls whether the API server should validate that redirects are only followed to the same host. Only used if the StreamingProxyRedirects flag is enabled.
VolumePVCDataSource: Enable support for specifying an existing PVC as a DataSource.
VolumeScheduling: Enable volume topology aware scheduling and make the PersistentVolumeClaim (PVC) binding aware of scheduling decisions. It also enables the usage of local volume type when used together with the PersistentLocalVolumes feature gate.
VolumeSnapshotDataSource: Enable volume snapshot data source support.
VolumeSubpath: Allow mounting a subpath of a volume in a container.
VolumeSubpathEnvExpansion: Enable subPathExpr field for expanding environment variables into a subPath.
WarningHeaders: Allow sending warning headers in API responses.
WindowsEndpointSliceProxying: When enabled, kube-proxy running on Windows will use EndpointSlices as the primary data source instead of Endpoints, enabling scalability and performance improvements. See Enabling Endpoint Slices.
WindowsGMSA: Enables passing of GMSA credential specs from pods to container runtimes.
WindowsRunAsUserName : Enable support for running applications in Windows containers with as a non-default user. See Configuring RunAsUserName for more details.

Last modified March 12, 2024 at 8:26 AM PST: Merge pull request #45495 from steve-hardman/fix-1.25 (8eb33af)

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Feature Gates (removed)

Feature gates that are removed

Descriptions for removed feature gates

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