features

Documentation

Index

• Constants

Constants

const (

	// owner: @ivelichkovich, @tallclair
	// stable: v1.30
	// kep: https://kep.k8s.io/3716
	//
	// Enables usage of MatchConditions fields to use CEL expressions for matching on admission webhooks
	AdmissionWebhookMatchConditions featuregate.Feature = "AdmissionWebhookMatchConditions"

	// owner: @jefftree @alexzielenski
	// stable: v1.30
	//
	// Enables an single HTTP endpoint /discovery/<version> which supports native HTTP
	// caching with ETags containing all APIResources known to the apiserver.
	AggregatedDiscoveryEndpoint featuregate.Feature = "AggregatedDiscoveryEndpoint"

	// owner: @vinayakankugoyal
	// kep: https://kep.k8s.io/4633
	//
	// Allows us to enable anonymous auth for only certain apiserver endpoints.
	AnonymousAuthConfigurableEndpoints featuregate.Feature = "AnonymousAuthConfigurableEndpoints"

	// owner: @stlaz @tkashem @dgrisonnet
	// kep: https://kep.k8s.io/3926
	//
	// Enables the cluster admin to identify resources that fail to
	// decrypt or fail to be decoded into an object, and introduces
	// a new delete option to allow deletion of such corrupt
	// resources using the Kubernetes API only.
	AllowUnsafeMalformedObjectDeletion featuregate.Feature = "AllowUnsafeMalformedObjectDeletion"

	// owner: @smarterclayton
	// stable: 1.29
	//
	// Allow API clients to retrieve resource lists in chunks rather than
	// all at once.
	APIListChunking featuregate.Feature = "APIListChunking"

	// owner: @ilackams
	//
	// Enables compression of REST responses (GET and LIST only)
	APIResponseCompression featuregate.Feature = "APIResponseCompression"

	// owner: @roycaihw
	//
	// Assigns each kube-apiserver an ID in a cluster.
	APIServerIdentity featuregate.Feature = "APIServerIdentity"

	// owner: @dashpole
	//
	// Add support for distributed tracing in the API Server
	APIServerTracing featuregate.Feature = "APIServerTracing"

	// owner: @linxiulei
	//
	// Enables serving watch requests in separate goroutines.
	APIServingWithRoutine featuregate.Feature = "APIServingWithRoutine"

	// owner: @deads2k
	// kep: https://kep.k8s.io/4601
	//
	// Allows authorization to use field and label selectors.
	AuthorizeWithSelectors featuregate.Feature = "AuthorizeWithSelectors"

	// owner: @benluddy
	// kep: https://kep.k8s.io/4222
	//
	// Enables CBOR as a supported encoding for requests and responses, and as the
	// preferred storage encoding for custom resources.
	CBORServingAndStorage featuregate.Feature = "CBORServingAndStorage"

	// owner: @serathius
	//
	// Replaces watch cache hashmap implementation with a btree based one, bringing performance improvements.
	BtreeWatchCache featuregate.Feature = "BtreeWatchCache"

	// owner: @serathius
	// Enables concurrent watch object decoding to avoid starving watch cache when conversion webhook is installed.
	ConcurrentWatchObjectDecode featuregate.Feature = "ConcurrentWatchObjectDecode"

	// owner: @jefftree
	// kep: https://kep.k8s.io/4355
	//
	// Enables coordinated leader election in the API server
	CoordinatedLeaderElection featuregate.Feature = "CoordinatedLeaderElection"

	//
	// Allows for updating watchcache resource version with progress notify events.
	EfficientWatchResumption featuregate.Feature = "EfficientWatchResumption"

	// owner: @aramase
	// kep: https://kep.k8s.io/3299
	// deprecated: v1.28
	//
	// Enables KMS v1 API for encryption at rest.
	KMSv1 featuregate.Feature = "KMSv1"

	// owner: @alexzielenski, @cici37, @jiahuif, @jpbetz
	// kep: https://kep.k8s.io/3962
	//
	// Enables the MutatingAdmissionPolicy in Admission Chain
	MutatingAdmissionPolicy featuregate.Feature = "MutatingAdmissionPolicy"

	// owner: @jiahuif
	// kep: https://kep.k8s.io/2887
	//
	// Enables populating "enum" field of OpenAPI schemas
	// in the spec returned from kube-apiserver.
	OpenAPIEnums featuregate.Feature = "OpenAPIEnums"

	// owner: @caesarxuchao
	// stable: 1.29
	//
	// Allow apiservers to show a count of remaining items in the response
	// to a chunking list request.
	RemainingItemCount featuregate.Feature = "RemainingItemCount"

	// owner: @stlaz
	//
	// Enable kube-apiserver to accept UIDs via request header authentication.
	// This will also make the kube-apiserver's API aggregator add UIDs via standard
	// headers when forwarding requests to the servers serving the aggregated API.
	RemoteRequestHeaderUID featuregate.Feature = "RemoteRequestHeaderUID"

	// owner: @wojtek-t
	//
	// Enables resilient watchcache initialization to avoid controlplane
	// overload.
	ResilientWatchCacheInitialization featuregate.Feature = "ResilientWatchCacheInitialization"

	// owner: @serathius
	//
	// Allow watch cache to create a watch on a dedicated RPC.
	// This prevents watch cache from being starved by other watches.
	SeparateCacheWatchRPC featuregate.Feature = "SeparateCacheWatchRPC"

	// owner: @enj
	//
	// Enables http2 DOS mitigations for unauthenticated clients.
	//
	// Some known reasons to disable these mitigations:
	//
	// An API server that is fronted by an L7 load balancer that is set up
	// to mitigate http2 attacks may opt to disable this protection to prevent
	// unauthenticated clients from disabling connection reuse between the load
	// balancer and the API server (many incoming connections could share the
	// same backend connection).
	//
	// An API server that is on a private network may opt to disable this
	// protection to prevent performance regressions for unauthenticated
	// clients.
	UnauthenticatedHTTP2DOSMitigation featuregate.Feature = "UnauthenticatedHTTP2DOSMitigation"

	// owner: @jpbetz
	// Resource create requests using generateName are retried automatically by the apiserver
	// if the generated name conflicts with an existing resource name, up to a maximum number of 7 retries.
	RetryGenerateName featuregate.Feature = "RetryGenerateName"

	// owner: @cici37
	//
	// StrictCostEnforcementForVAP is used to apply strict CEL cost validation for ValidatingAdmissionPolicy.
	// It will be set to off by default for certain time of period to prevent the impact on the existing users.
	// It is strongly recommended to enable this feature gate as early as possible.
	// The strict cost is specific for the extended libraries whose cost defined under k8s/apiserver/pkg/cel/library.
	StrictCostEnforcementForVAP featuregate.Feature = "StrictCostEnforcementForVAP"

	// owner: @cici37
	//
	// StrictCostEnforcementForWebhooks is used to apply strict CEL cost validation for matchConditions in Webhooks.
	// It will be set to off by default for certain time of period to prevent the impact on the existing users.
	// It is strongly recommended to enable this feature gate as early as possible.
	// The strict cost is specific for the extended libraries whose cost defined under k8s/apiserver/pkg/cel/library.
	StrictCostEnforcementForWebhooks featuregate.Feature = "StrictCostEnforcementForWebhooks"

	// owner: @caesarxuchao @roycaihw
	//
	// Enable the storage version API.
	StorageVersionAPI featuregate.Feature = "StorageVersionAPI"

	// owner: @caesarxuchao
	//
	// Allow apiservers to expose the storage version hash in the discovery
	// document.
	StorageVersionHash featuregate.Feature = "StorageVersionHash"

	// owner: @aramase, @enj, @nabokihms
	// kep: https://kep.k8s.io/3331
	//
	// Enables Structured Authentication Configuration
	StructuredAuthenticationConfiguration featuregate.Feature = "StructuredAuthenticationConfiguration"

	// owner: @palnabarun
	// kep: https://kep.k8s.io/3221
	//
	// Enables Structured Authorization Configuration
	StructuredAuthorizationConfiguration featuregate.Feature = "StructuredAuthorizationConfiguration"

	// owner: @wojtek-t
	//
	// Enables support for watch bookmark events.
	WatchBookmark featuregate.Feature = "WatchBookmark"

	// owner: @wojtek-t
	//
	// Enables post-start-hook for storage readiness
	WatchCacheInitializationPostStartHook featuregate.Feature = "WatchCacheInitializationPostStartHook"

	// owner: @serathius
	// Enables watches without resourceVersion to be served from storage.
	// Used to prevent https://github.com/kubernetes/kubernetes/issues/123072 until etcd fixes the issue.
	WatchFromStorageWithoutResourceVersion featuregate.Feature = "WatchFromStorageWithoutResourceVersion"

	// owner: @p0lyn0mial
	//
	// Allow the API server to stream individual items instead of chunking
	WatchList featuregate.Feature = "WatchList"

	// owner: @serathius
	// kep: http://kep.k8s.io/2340
	//
	// Allow the API server to serve consistent lists from cache
	ConsistentListFromCache featuregate.Feature = "ConsistentListFromCache"
)