# kube-controller-manager

kube-controller-managerSynopsisThe Kubernetes controller manager is a daemon that embeds the core control loops shipped with Kubernetes. In applications of robotics and automation, a control loop is a non-terminating loop that regulates the state of the system. In Kubernetes, a controller is a control loop that watches the shared state of the cluster through the apiserver and makes changes attempting to move the current state towards the desired state. Examples of controllers that ship with Kubernetes today are the replication controller, endpoints controller, namespace controller, and serviceaccounts controller.kube-controller-manager [flags] Options--allocate-node-cidrsShould CIDRs for Pods be allocated and set on the cloud provider. Requires --cluster-cidr.--allow-metric-labels stringToString Default: []The map from metric-label to value allow-list of this label. The key's format is <MetricName>,<LabelName>. The value's format is <allowed_value>,<allowed_value>...e.g. metric1,label1='v1,v2,v3', metric1,label2='v1,v2,v3' metric2,label1='v1,v2,v3'.--allow-metric-labels-manifest stringThe path to the manifest file that contains the allow-list mapping. The format of the file is the same as the flag --allow-metric-labels. Note that the flag --allow-metric-labels will override the manifest file.--attach-detach-reconcile-sync-period duration Default: 1m0sThe reconciler sync wait time between volume attach detach. This duration must be larger than one second, and increasing this value from the default may allow for volumes to be mismatched with pods.--authentication-kubeconfig stringkubeconfig file pointing at the 'core' kubernetes server with enough rights to create tokenreviews.authentication.k8s.io. This is optional. If empty, all token requests are considered to be anonymous and no client CA is looked up in the cluster.--authentication-skip-lookupIf false, the authentication-kubeconfig will be used to lookup missing authentication configuration from the cluster.--authentication-token-webhook-cache-ttl duration Default: 10sThe duration to cache responses from the webhook token authenticator.--authentication-tolerate-lookup-failureIf true, failures to look up missing authentication configuration from the cluster are not considered fatal. Note that this can result in authentication that treats all requests as anonymous.--authorization-always-allow-paths strings Default: "/healthz,/readyz,/livez"A list of HTTP paths to skip during authorization, i.e. these are authorized without contacting the 'core' kubernetes server.--authorization-kubeconfig stringkubeconfig file pointing at the 'core' kubernetes server with enough rights to create subjectaccessreviews.authorization.k8s.io. This is optional. If empty, all requests not skipped by authorization are forbidden.--authorization-webhook-cache-authorized-ttl duration Default: 10sThe duration to cache 'authorized' responses from the webhook authorizer.--authorization-webhook-cache-unauthorized-ttl duration Default: 10sThe duration to cache 'unauthorized' responses from the webhook authorizer.--bind-address string Default: 0.0.0.0The IP address on which to listen for the --secure-port port. The associated interface(s) must be reachable by the rest of the cluster, and by CLI/web clients. If blank or an unspecified address (0.0.0.0 or ::), all interfaces and IP address families will be used.--cert-dir stringThe directory where the TLS certs are located. If --tls-cert-file and --tls-private-key-file are provided, this flag will be ignored.--cidr-allocator-type string Default: "RangeAllocator"Type of CIDR allocator to use--client-ca-file stringIf set, any request presenting a client certificate signed by one of the authorities in the client-ca-file is authenticated with an identity corresponding to the CommonName of the client certificate.--cloud-config stringThe path to the cloud provider configuration file. Empty string for no configuration file.--cloud-provider stringThe provider for cloud services. Empty string for no provider.--cluster-cidr stringCIDR Range for Pods in cluster. Only used when --allocate-node-cidrs=true; if false, this option will be ignored.--cluster-name string Default: "kubernetes"The instance prefix for the cluster.--cluster-signing-cert-file stringFilename containing a PEM-encoded X509 CA certificate used to issue cluster-scoped certificates. If specified, no more specific --cluster-signing-* flag may be specified.--cluster-signing-duration duration Default: 8760h0m0sThe max length of duration signed certificates will be given. Individual CSRs may request shorter certs by setting spec.expirationSeconds.--cluster-signing-key-file stringFilename containing a PEM-encoded RSA or ECDSA private key used to sign cluster-scoped certificates. If specified, no more specific --cluster-signing-* flag may be specified.--cluster-signing-kube-apiserver-client-cert-file stringFilename containing a PEM-encoded X509 CA certificate used to issue certificates for the kubernetes.io/kube-apiserver-client signer. If specified, --cluster-signing-{cert,key}-file must not be set.--cluster-signing-kube-apiserver-client-key-file stringFilename containing a PEM-encoded RSA or ECDSA private key used to sign certificates for the kubernetes.io/kube-apiserver-client signer. If specified, --cluster-signing-{cert,key}-file must not be set.--cluster-signing-kubelet-client-cert-file stringFilename containing a PEM-encoded X509 CA certificate used to issue certificates for the kubernetes.io/kube-apiserver-client-kubelet signer. If specified, --cluster-signing-{cert,key}-file must not be set.--cluster-signing-kubelet-client-key-file stringFilename containing a PEM-encoded RSA or ECDSA private key used to sign certificates for the kubernetes.io/kube-apiserver-client-kubelet signer. If specified, --cluster-signing-{cert,key}-file must not be set.--cluster-signing-kubelet-serving-cert-file stringFilename containing a PEM-encoded X509 CA certificate used to issue certificates for the kubernetes.io/kubelet-serving signer. If specified, --cluster-signing-{cert,key}-file must not be set.--cluster-signing-kubelet-serving-key-file stringFilename containing a PEM-encoded RSA or ECDSA private key used to sign certificates for the kubernetes.io/kubelet-serving signer. If specified, --cluster-signing-{cert,key}-file must not be set.--cluster-signing-legacy-unknown-cert-file stringFilename containing a PEM-encoded X509 CA certificate used to issue certificates for the kubernetes.io/legacy-unknown signer. If specified, --cluster-signing-{cert,key}-file must not be set.--cluster-signing-legacy-unknown-key-file stringFilename containing a PEM-encoded RSA or ECDSA private key used to sign certificates for the kubernetes.io/legacy-unknown signer. If specified, --cluster-signing-{cert,key}-file must not be set.--concurrent-cron-job-syncs int32 Default: 5The number of cron job objects that are allowed to sync concurrently. Larger number = more responsive jobs, but more CPU (and network) load--concurrent-daemonset-syncs int32 Default: 2The number of daemonset objects that are allowed to sync concurrently. Larger number = more responsive daemonsets, but more CPU (and network) load--concurrent-deployment-syncs int32 Default: 5The number of deployment objects that are allowed to sync concurrently. Larger number = more responsive deployments, but more CPU (and network) load--concurrent-endpoint-syncs int32 Default: 5The number of endpoint syncing operations that will be done concurrently. Larger number = faster endpoint updating, but more CPU (and network) load--concurrent-ephemeralvolume-syncs int32 Default: 5The number of ephemeral volume syncing operations that will be done concurrently. Larger number = faster ephemeral volume updating, but more CPU (and network) load--concurrent-gc-syncs int32 Default: 20The number of garbage collector workers that are allowed to sync concurrently.--concurrent-horizontal-pod-autoscaler-syncs int32 Default: 5The number of horizontal pod autoscaler objects that are allowed to sync concurrently. Larger number = more responsive horizontal pod autoscaler objects processing, but more CPU (and network) load.--concurrent-job-syncs int32 Default: 5The number of job objects that are allowed to sync concurrently. Larger number = more responsive jobs, but more CPU (and network) load--concurrent-namespace-syncs int32 Default: 10The number of namespace objects that are allowed to sync concurrently. Larger number = more responsive namespace termination, but more CPU (and network) load--concurrent-rc-syncs int32 Default: 5The number of replication controllers that are allowed to sync concurrently. Larger number = more responsive replica management, but more CPU (and network) load--concurrent-replicaset-syncs int32 Default: 5The number of replica sets that are allowed to sync concurrently. Larger number = more responsive replica management, but more CPU (and network) load--concurrent-resource-quota-syncs int32 Default: 5The number of resource quotas that are allowed to sync concurrently. Larger number = more responsive quota management, but more CPU (and network) load--concurrent-service-endpoint-syncs int32 Default: 5The number of service endpoint syncing operations that will be done concurrently. Larger number = faster endpoint slice updating, but more CPU (and network) load. Defaults to 5.--concurrent-service-syncs int32 Default: 1The number of services that are allowed to sync concurrently. Larger number = more responsive service management, but more CPU (and network) load--concurrent-serviceaccount-token-syncs int32 Default: 5The number of service account token objects that are allowed to sync concurrently. Larger number = more responsive token generation, but more CPU (and network) load--concurrent-statefulset-syncs int32 Default: 5The number of statefulset objects that are allowed to sync concurrently. Larger number = more responsive statefulsets, but more CPU (and network) load--concurrent-ttl-after-finished-syncs int32 Default: 5The number of ttl-after-finished-controller workers that are allowed to sync concurrently.--concurrent-validating-admission-policy-status-syncs int32 Default: 5The number of ValidatingAdmissionPolicyStatusController workers that are allowed to sync concurrently.--configure-cloud-routes Default: trueShould CIDRs allocated by allocate-node-cidrs be configured on the cloud provider.--contention-profilingEnable block profiling, if profiling is enabled--controller-start-interval durationInterval between starting controller managers.--controllers strings Default: "*"A list of controllers to enable. '*' enables all on-by-default controllers, 'foo' enables the controller named 'foo', '-foo' disables the controller named 'foo'.All controllers: bootstrap-signer-controller, certificatesigningrequest-approving-controller, certificatesigningrequest-cleaner-controller, certificatesigningrequest-signing-controller, cloud-node-lifecycle-controller, clusterrole-aggregation-controller, cronjob-controller, daemonset-controller, deployment-controller, device-taint-eviction-controller, disruption-controller, endpoints-controller, endpointslice-controller, endpointslice-mirroring-controller, ephemeral-volume-controller, garbage-collector-controller, horizontal-pod-autoscaler-controller, job-controller, kube-apiserver-serving-clustertrustbundle-publisher-controller, legacy-serviceaccount-token-cleaner-controller, namespace-controller, node-ipam-controller, node-lifecycle-controller, node-route-controller, persistentvolume-attach-detach-controller, persistentvolume-binder-controller, persistentvolume-expander-controller, persistentvolume-protection-controller, persistentvolumeclaim-protection-controller, pod-garbage-collector-controller, replicaset-controller, replicationcontroller-controller, resourceclaim-controller, resourcequota-controller, root-ca-certificate-publisher-controller, selinux-warning-controller, service-cidr-controller, service-lb-controller, serviceaccount-controller, serviceaccount-token-controller, statefulset-controller, storage-version-migrator-controller, storageversion-garbage-collector-controller, taint-eviction-controller, token-cleaner-controller, ttl-after-finished-controller, ttl-controller, validatingadmissionpolicy-status-controller, volumeattributesclass-protection-controllerDisabled-by-default controllers: bootstrap-signer-controller, selinux-warning-controller, token-cleaner-controller--disable-attach-detach-reconcile-syncDisable volume attach detach reconciler sync. Disabling this may cause volumes to be mismatched with pods. Use wisely.--disable-force-detach-on-timeoutPrevent force detaching volumes based on maximum unmount time and node status. If this flag is set to true, the non-graceful node shutdown feature must be used to recover from node failure. See https://k8s.io/docs/storage-disable-force-detach-on-timeout/.--disable-http2-servingIf true, HTTP2 serving will be disabled [default=false]--disabled-metrics stringsThis flag provides an escape hatch for misbehaving metrics. You must provide the fully qualified metric name in order to disable it. Disclaimer: disabling metrics is higher in precedence than showing hidden metrics.--emulated-version stringsThe versions different components emulate their capabilities (APIs, features, ...) of.If set, the component will emulate the behavior of this version instead of the underlying binary version.Version format could only be major.minor, for example: '--emulated-version=wardle=1.2,kube=1.31'.Options are: kube=1.31..1.33(default:1.33)If the component is not specified, defaults to "kube"--enable-dynamic-provisioning Default: trueEnable dynamic provisioning for environments that support it.--enable-garbage-collector Default: trueEnables the generic garbage collector. MUST be synced with the corresponding flag of the kube-apiserver.--enable-hostpath-provisionerEnable HostPath PV provisioning when running without a cloud provider. This allows testing and development of provisioning features. HostPath provisioning is not supported in any way, won't work in a multi-node cluster, and should not be used for anything other than testing or development.--enable-leader-migrationWhether to enable controller leader migration.--endpoint-updates-batch-period durationThe length of endpoint updates batching period. Processing of pod changes will be delayed by this duration to join them with potential upcoming updates and reduce the overall number of endpoints updates. Larger number = higher endpoint programming latency, but lower number of endpoints revision generated--endpointslice-updates-batch-period durationThe length of endpoint slice updates batching period. Processing of pod changes will be delayed by this duration to join them with potential upcoming updates and reduce the overall number of endpoints updates. Larger number = higher endpoint programming latency, but lower number of endpoints revision generated--external-cloud-volume-plugin stringThe plugin to use when cloud provider is set to external. Can be empty, should only be set when cloud-provider is external. Currently used to allow node-ipam-controller, persistentvolume-binder-controller, persistentvolume-expander-controller and attach-detach-controller to work for in tree cloud providers.--feature-gates colonSeparatedMultimapStringStringComma-separated list of component:key=value pairs that describe feature gates for alpha/experimental features of different components.If the component is not specified, defaults to "kube". This flag can be repeatedly invoked. For example: --feature-gates 'wardle:featureA=true,wardle:featureB=false' --feature-gates 'kube:featureC=true'Options are:kube:APIResponseCompression=true|false (BETA - default=true)kube:APIServerIdentity=true|false (BETA - default=true)kube:APIServerTracing=true|false (BETA - default=true)kube:APIServingWithRoutine=true|false (ALPHA - default=false)kube:AllAlpha=true|false (ALPHA - default=false)kube:AllBeta=true|false (BETA - default=false)kube:AllowParsingUserUIDFromCertAuth=true|false (BETA - default=true)kube:AllowUnsafeMalformedObjectDeletion=true|false (ALPHA - default=false)kube:AnonymousAuthConfigurableEndpoints=true|false (BETA - default=true)kube:AuthorizeNodeWithSelectors=true|false (BETA - default=true)kube:AuthorizeWithSelectors=true|false (BETA - default=true)kube:CBORServingAndStorage=true|false (ALPHA - default=false)kube:CPUManagerPolicyAlphaOptions=true|false (ALPHA - default=false)kube:CPUManagerPolicyBetaOptions=true|false (BETA - default=true)kube:CSIVolumeHealth=true|false (ALPHA - default=false)kube:ClientsAllowCBOR=true|false (ALPHA - default=false)kube:ClientsPreferCBOR=true|false (ALPHA - default=false)kube:CloudControllerManagerWebhook=true|false (ALPHA - default=false)kube:ClusterTrustBundle=true|false (BETA - default=false)kube:ClusterTrustBundleProjection=true|false (BETA - default=false)kube:ComponentFlagz=true|false (ALPHA - default=false)kube:ComponentStatusz=true|false (ALPHA - default=false)kube:ConcurrentWatchObjectDecode=true|false (BETA - default=false)kube:ConsistentListFromCache=true|false (BETA - default=true)kube:ContainerCheckpoint=true|false (BETA - default=true)kube:ContainerStopSignals=true|false (ALPHA - default=false)kube:ContextualLogging=true|false (BETA - default=true)kube:CoordinatedLeaderElection=true|false (BETA - default=false)kube:CrossNamespaceVolumeDataSource=true|false (ALPHA - default=false)kube:CustomCPUCFSQuotaPeriod=true|false (ALPHA - default=false)kube:DRAAdminAccess=true|false (ALPHA - default=false)kube:DRADeviceTaints=true|false (ALPHA - default=false)kube:DRAPartitionableDevices=true|false (ALPHA - default=false)kube:DRAPrioritizedList=true|false (ALPHA - default=false)kube:DRAResourceClaimDeviceStatus=true|false (BETA - default=true)kube:DeclarativeValidation=true|false (BETA - default=true)kube:DeclarativeValidationTakeover=true|false (BETA - default=false)kube:DeploymentReplicaSetTerminatingReplicas=true|false (ALPHA - default=false)kube:DisableAllocatorDualWrite=true|false (BETA - default=false)kube:DisableCPUQuotaWithExclusiveCPUs=true|false (BETA - default=true)kube:DynamicResourceAllocation=true|false (BETA - default=false)kube:EventedPLEG=true|false (ALPHA - default=false)kube:ExternalServiceAccountTokenSigner=true|false (ALPHA - default=false)kube:GracefulNodeShutdown=true|false (BETA - default=true)kube:GracefulNodeShutdownBasedOnPodPriority=true|false (BETA - default=true)kube:HPAConfigurableTolerance=true|false (ALPHA - default=false)kube:HPAScaleToZero=true|false (ALPHA - default=false)kube:ImageMaximumGCAge=true|false (BETA - default=true)kube:ImageVolume=true|false (BETA - default=false)kube:InOrderInformers=true|false (BETA - default=true)kube:InPlacePodVerticalScaling=true|false (BETA - default=true)kube:InPlacePodVerticalScalingExclusiveCPUs=true|false (ALPHA - default=false)kube:InTreePluginPortworxUnregister=true|false (ALPHA - default=false)kube:InformerResourceVersion=true|false (ALPHA - default=false)kube:JobManagedBy=true|false (BETA - default=true)kube:JobPodReplacementPolicy=true|false (BETA - default=true)kube:KubeletCgroupDriverFromCRI=true|false (BETA - default=true)kube:KubeletCrashLoopBackOffMax=true|false (ALPHA - default=false)kube:KubeletEnsureSecretPulledImages=true|false (ALPHA - default=false)kube:KubeletFineGrainedAuthz=true|false (BETA - default=true)kube:KubeletInUserNamespace=true|false (ALPHA - default=false)kube:KubeletPSI=true|false (ALPHA - default=false)kube:KubeletPodResourcesDynamicResources=true|false (ALPHA - default=false)kube:KubeletPodResourcesGet=true|false (ALPHA - default=false)kube:KubeletSeparateDiskGC=true|false (BETA - default=true)kube:KubeletServiceAccountTokenForCredentialProviders=true|false (ALPHA - default=false)kube:KubeletTracing=true|false (BETA - default=true)kube:ListFromCacheSnapshot=true|false (ALPHA - default=false)kube:LocalStorageCapacityIsolationFSQuotaMonitoring=true|false (BETA - default=false)kube:LoggingAlphaOptions=true|false (ALPHA - default=false)kube:LoggingBetaOptions=true|false (BETA - default=true)kube:MatchLabelKeysInPodTopologySpread=true|false (BETA - default=true)kube:MaxUnavailableStatefulSet=true|false (ALPHA - default=false)kube:MemoryQoS=true|false (ALPHA - default=false)kube:MutableCSINodeAllocatableCount=true|false (ALPHA - default=false)kube:MutatingAdmissionPolicy=true|false (ALPHA - default=false)kube:NodeLogQuery=true|false (BETA - default=false)kube:NodeSwap=true|false (BETA - default=true)kube:OpenAPIEnums=true|false (BETA - default=true)kube:OrderedNamespaceDeletion=true|false (BETA - default=true)kube:PodAndContainerStatsFromCRI=true|false (ALPHA - default=false)kube:PodDeletionCost=true|false (BETA - default=true)kube:PodLevelResources=true|false (ALPHA - default=false)kube:PodLifecycleSleepAction=true|false (BETA - default=true)kube:PodLifecycleSleepActionAllowZero=true|false (BETA - default=true)kube:PodLogsQuerySplitStreams=true|false (ALPHA - default=false)kube:PodObservedGenerationTracking=true|false (ALPHA - default=false)kube:PodReadyToStartContainersCondition=true|false (BETA - default=true)kube:PodTopologyLabelsAdmission=true|false (ALPHA - default=false)kube:PortForwardWebsockets=true|false (BETA - default=true)kube:PreferSameTrafficDistribution=true|false (ALPHA - default=false)kube:ProcMountType=true|false (BETA - default=true)kube:QOSReserved=true|false (ALPHA - default=false)kube:RecoverVolumeExpansionFailure=true|false (BETA - default=true)kube:ReduceDefaultCrashLoopBackOffDecay=true|false (ALPHA - default=false)kube:RelaxedDNSSearchValidation=true|false (BETA - default=true)kube:RelaxedEnvironmentVariableValidation=true|false (BETA - default=true)kube:ReloadKubeletServerCertificateFile=true|false (BETA - default=true)kube:RemoteRequestHeaderUID=true|false (BETA - default=true)kube:ResilientWatchCacheInitialization=true|false (BETA - default=true)kube:ResourceHealthStatus=true|false (ALPHA - default=false)kube:RotateKubeletServerCertificate=true|false (BETA - default=true)kube:RuntimeClassInImageCriApi=true|false (ALPHA - default=false)kube:SELinuxChangePolicy=true|false (BETA - default=true)kube:SELinuxMount=true|false (BETA - default=false)kube:SELinuxMountReadWriteOncePod=true|false (BETA - default=true)kube:SchedulerAsyncPreemption=true|false (BETA - default=true)kube:SchedulerPopFromBackoffQ=true|false (BETA - default=true)kube:SchedulerQueueingHints=true|false (BETA - default=true)kube:SeparateTaintEvictionController=true|false (BETA - default=true)kube:ServiceAccountNodeAudienceRestriction=true|false (BETA - default=true)kube:StorageCapacityScoring=true|false (ALPHA - default=false)kube:StorageVersionAPI=true|false (ALPHA - default=false)kube:StorageVersionHash=true|false (BETA - default=true)kube:StorageVersionMigrator=true|false (ALPHA - default=false)kube:StreamingCollectionEncodingToJSON=true|false (BETA - default=true)kube:StreamingCollectionEncodingToProtobuf=true|false (BETA - default=true)kube:StrictIPCIDRValidation=true|false (ALPHA - default=false)kube:StructuredAuthenticationConfiguration=true|false (BETA - default=true)kube:SupplementalGroupsPolicy=true|false (BETA - default=true)kube:SystemdWatchdog=true|false (BETA - default=true)kube:TopologyManagerPolicyAlphaOptions=true|false (ALPHA - default=false)kube:TopologyManagerPolicyBetaOptions=true|false (BETA - default=true)kube:TranslateStreamCloseWebsocketRequests=true|false (BETA - default=true)kube:UnauthenticatedHTTP2DOSMitigation=true|false (BETA - default=true)kube:UnknownVersionInteroperabilityProxy=true|false (ALPHA - default=false)kube:UserNamespacesPodSecurityStandards=true|false (ALPHA - default=false)kube:UserNamespacesSupport=true|false (BETA - default=true)kube:VolumeAttributesClass=true|false (BETA - default=false)kube:WatchCacheInitializationPostStartHook=true|false (BETA - default=false)kube:WatchList=true|false (BETA - default=false)kube:WatchListClient=true|false (BETA - default=false)kube:WinDSR=true|false (BETA - default=true)kube:WinOverlay=true|false (BETA - default=true)kube:WindowsCPUAndMemoryAffinity=true|false (ALPHA - default=false)kube:WindowsGracefulNodeShutdown=true|false (ALPHA - default=false)--flex-volume-plugin-dir string Default: "/usr/libexec/kubernetes/kubelet-plugins/volume/exec/"Full path of the directory in which the flex volume plugin should search for additional third party volume plugins.-h, --helphelp for kube-controller-manager--horizontal-pod-autoscaler-cpu-initialization-period duration Default: 5m0sThe period after pod start when CPU samples might be skipped.--horizontal-pod-autoscaler-downscale-stabilization duration Default: 5m0sThe period for which autoscaler will look backwards and not scale down below any recommendation it made during that period.--horizontal-pod-autoscaler-initial-readiness-delay duration Default: 30sThe period after pod start during which readiness changes will be treated as initial readiness.--horizontal-pod-autoscaler-sync-period duration Default: 15sThe period for syncing the number of pods in horizontal pod autoscaler.--horizontal-pod-autoscaler-tolerance float Default: 0.1The minimum change (from 1.0) in the desired-to-actual metrics ratio for the horizontal pod autoscaler to consider scaling.--http2-max-streams-per-connection intThe limit that the server gives to clients for the maximum number of streams in an HTTP/2 connection. Zero means to use golang's default.--kube-api-burst int32 Default: 30Burst to use while talking with kubernetes apiserver.--kube-api-content-type string Default: "application/vnd.kubernetes.protobuf"Content type of requests sent to apiserver.--kube-api-qps float Default: 20QPS to use while talking with kubernetes apiserver.--kubeconfig stringPath to kubeconfig file with authorization and master location information (the master location can be overridden by the master flag).--large-cluster-size-threshold int32 Default: 50Number of nodes from which node-lifecycle-controller treats the cluster as large for the eviction logic purposes. --secondary-node-eviction-rate is implicitly overridden to 0 for clusters this size or smaller. Notice: If nodes reside in multiple zones, this threshold will be considered as zone node size threshold for each zone to determine node eviction rate independently.--leader-elect Default: trueStart a leader election client and gain leadership before executing the main loop. Enable this when running replicated components for high availability.--leader-elect-lease-duration duration Default: 15sThe duration that non-leader candidates will wait after observing a leadership renewal until attempting to acquire leadership of a led but unrenewed leader slot. This is effectively the maximum duration that a leader can be stopped before it is replaced by another candidate. This is only applicable if leader election is enabled.--leader-elect-renew-deadline duration Default: 10sThe interval between attempts by the acting master to renew a leadership slot before it stops leading. This must be less than the lease duration. This is only applicable if leader election is enabled.--leader-elect-resource-lock string Default: "leases"The type of resource object that is used for locking during leader election. Supported options are 'leases'.--leader-elect-resource-name string Default: "kube-controller-manager"The name of resource object that is used for locking during leader election.--leader-elect-resource-namespace string Default: "kube-system"The namespace of resource object that is used for locking during leader election.--leader-elect-retry-period duration Default: 2sThe duration the clients should wait between attempting acquisition and renewal of a leadership. This is only applicable if leader election is enabled.--leader-migration-config stringPath to the config file for controller leader migration, or empty to use the value that reflects default configuration of the controller manager. The config file should be of type LeaderMigrationConfiguration, group controllermanager.config.k8s.io, version v1alpha1.--legacy-service-account-token-clean-up-period duration Default: 8760h0m0sThe period of time since the last usage of an legacy service account token before it can be deleted.--log-flush-frequency duration Default: 5sMaximum number of seconds between log flushes--log-text-info-buffer-size quantity[Alpha] In text format with split output streams, the info messages can be buffered for a while to increase performance. The default value of zero bytes disables buffering. The size can be specified as number of bytes (512), multiples of 1000 (1K), multiples of 1024 (2Ki), or powers of those (3M, 4G, 5Mi, 6Gi). Enable the LoggingAlphaOptions feature gate to use this.--log-text-split-stream[Alpha] In text format, write error messages to stderr and info messages to stdout. The default is to write a single stream to stdout. Enable the LoggingAlphaOptions feature gate to use this.--logging-format string Default: "text"Sets the log format. Permitted formats: "text".--master stringThe address of the Kubernetes API server (overrides any value in kubeconfig).--max-endpoints-per-slice int32 Default: 100The maximum number of endpoints that will be added to an EndpointSlice. More endpoints per slice will result in less endpoint slices, but larger resources. Defaults to 100.--min-resync-period duration Default: 12h0m0sThe resync period in reflectors will be random between MinResyncPeriod and 2*MinResyncPeriod.--mirroring-concurrent-service-endpoint-syncs int32 Default: 5The number of service endpoint syncing operations that will be done concurrently by the endpointslice-mirroring-controller. Larger number = faster endpoint slice updating, but more CPU (and network) load. Defaults to 5.--mirroring-endpointslice-updates-batch-period durationThe length of EndpointSlice updates batching period for endpointslice-mirroring-controller. Processing of EndpointSlice changes will be delayed by this duration to join them with potential upcoming updates and reduce the overall number of EndpointSlice updates. Larger number = higher endpoint programming latency, but lower number of endpoints revision generated--mirroring-max-endpoints-per-subset int32 Default: 1000The maximum number of endpoints that will be added to an EndpointSlice by the endpointslice-mirroring-controller. More endpoints per slice will result in less endpoint slices, but larger resources. Defaults to 100.--namespace-sync-period duration Default: 5m0sThe period for syncing namespace life-cycle updates--node-cidr-mask-size int32Mask size for node cidr in cluster. Default is 24 for IPv4 and 64 for IPv6.--node-cidr-mask-size-ipv4 int32Mask size for IPv4 node cidr in dual-stack cluster. Default is 24.--node-cidr-mask-size-ipv6 int32Mask size for IPv6 node cidr in dual-stack cluster. Default is 64.--node-eviction-rate float Default: 0.1Number of nodes per second on which pods are deleted in case of node failure when a zone is healthy (see --unhealthy-zone-threshold for definition of healthy/unhealthy). Zone refers to entire cluster in non-multizone clusters.--node-monitor-grace-period duration Default: 50sAmount of time which we allow running Node to be unresponsive before marking it unhealthy. Must be N times more than kubelet's nodeStatusUpdateFrequency, where N means number of retries allowed for kubelet to post node status. This value should also be greater than the sum of HTTP2_PING_TIMEOUT_SECONDS and HTTP2_READ_IDLE_TIMEOUT_SECONDS--node-monitor-period duration Default: 5sThe period for syncing NodeStatus in cloud-node-lifecycle-controller.--node-startup-grace-period duration Default: 1m0sAmount of time which we allow starting Node to be unresponsive before marking it unhealthy.--permit-address-sharingIf true, SO_REUSEADDR will be used when binding the port. This allows binding to wildcard IPs like 0.0.0.0 and specific IPs in parallel, and it avoids waiting for the kernel to release sockets in TIME_WAIT state. [default=false]--permit-port-sharingIf true, SO_REUSEPORT will be used when binding the port, which allows more than one instance to bind on the same address and port. [default=false]--profiling Default: trueEnable profiling via web interface host:port/debug/pprof/--pv-recycler-increment-timeout-nfs int32 Default: 30the increment of time added per Gi to ActiveDeadlineSeconds for an NFS scrubber pod--pv-recycler-minimum-timeout-hostpath int32 Default: 60The minimum ActiveDeadlineSeconds to use for a HostPath Recycler pod. This is for development and testing only and will not work in a multi-node cluster.--pv-recycler-minimum-timeout-nfs int32 Default: 300The minimum ActiveDeadlineSeconds to use for an NFS Recycler pod--pv-recycler-pod-template-filepath-hostpath stringThe file path to a pod definition used as a template for HostPath persistent volume recycling. This is for development and testing only and will not work in a multi-node cluster.--pv-recycler-pod-template-filepath-nfs stringThe file path to a pod definition used as a template for NFS persistent volume recycling--pv-recycler-timeout-increment-hostpath int32 Default: 30the increment of time added per Gi to ActiveDeadlineSeconds for a HostPath scrubber pod. This is for development and testing only and will not work in a multi-node cluster.--pvclaimbinder-sync-period duration Default: 15sThe period for syncing persistent volumes and persistent volume claims--requestheader-allowed-names stringsList of client certificate common names to allow to provide usernames in headers specified by --requestheader-username-headers. If empty, any client certificate validated by the authorities in --requestheader-client-ca-file is allowed.--requestheader-client-ca-file stringRoot certificate bundle to use to verify client certificates on incoming requests before trusting usernames in headers specified by --requestheader-username-headers. WARNING: generally do not depend on authorization being already done for incoming requests.--requestheader-extra-headers-prefix strings Default: "x-remote-extra-"List of request header prefixes to inspect. X-Remote-Extra- is suggested.--requestheader-group-headers strings Default: "x-remote-group"List of request headers to inspect for groups. X-Remote-Group is suggested.--requestheader-uid-headers stringsList of request headers to inspect for UIDs. X-Remote-Uid is suggested. Requires the RemoteRequestHeaderUID feature to be enabled.--requestheader-username-headers strings Default: "x-remote-user"List of request headers to inspect for usernames. X-Remote-User is common.--resource-quota-sync-period duration Default: 5m0sThe period for syncing quota usage status in the system--root-ca-file stringIf set, this root certificate authority will be included in service account's token secret. This must be a valid PEM-encoded CA bundle.--route-reconciliation-period duration Default: 10sThe period for reconciling routes created for Nodes by cloud provider.--secondary-node-eviction-rate float Default: 0.01Number of nodes per second on which pods are deleted in case of node failure when a zone is unhealthy (see --unhealthy-zone-threshold for definition of healthy/unhealthy). Zone refers to entire cluster in non-multizone clusters. This value is implicitly overridden to 0 if the cluster size is smaller than --large-cluster-size-threshold.--secure-port int Default: 10257The port on which to serve HTTPS with authentication and authorization. If 0, don't serve HTTPS at all.--service-account-private-key-file stringEnables legacy secret-based tokens when set. Filename containing a PEM-encoded private RSA or ECDSA key used to sign service account tokens.--service-cluster-ip-range stringCIDR Range for Services in cluster. Only used when --allocate-node-cidrs=true; if false, this option will be ignored.--show-hidden-metrics-for-version stringThe previous version for which you want to show hidden metrics. Only the previous minor version is meaningful, other values will not be allowed. The format is <major>.<minor>, e.g.: '1.16'. The purpose of this format is make sure you have the opportunity to notice if the next release hides additional metrics, rather than being surprised when they are permanently removed in the release after that.--terminated-pod-gc-threshold int32 Default: 12500Number of terminated pods that can exist before the terminated pod garbage collector starts deleting terminated pods. If <= 0, the terminated pod garbage collector is disabled.--tls-cert-file stringFile containing the default x509 Certificate for HTTPS. (CA cert, if any, concatenated after server cert). If HTTPS serving is enabled, and --tls-cert-file and --tls-private-key-file are not provided, a self-signed certificate and key are generated for the public address and saved to the directory specified by --cert-dir.--tls-cipher-suites stringsComma-separated list of cipher suites for the server. If omitted, the default Go cipher suites will be used.Preferred values: TLS_AES_128_GCM_SHA256, TLS_AES_256_GCM_SHA384, TLS_CHACHA20_POLY1305_SHA256, TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305, TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305, TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256.Insecure values: TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_RC4_128_SHA, TLS_RSA_WITH_3DES_EDE_CBC_SHA, TLS_RSA_WITH_AES_128_CBC_SHA, TLS_RSA_WITH_AES_128_CBC_SHA256, TLS_RSA_WITH_AES_128_GCM_SHA256, TLS_RSA_WITH_AES_256_CBC_SHA, TLS_RSA_WITH_AES_256_GCM_SHA384, TLS_RSA_WITH_RC4_128_SHA.--tls-min-version stringMinimum TLS version supported. Possible values: VersionTLS10, VersionTLS11, VersionTLS12, VersionTLS13--tls-private-key-file stringFile containing the default x509 private key matching --tls-cert-file.--tls-sni-cert-key stringA pair of x509 certificate and private key file paths, optionally suffixed with a list of domain patterns which are fully qualified domain names, possibly with prefixed wildcard segments. The domain patterns also allow IP addresses, but IPs should only be used if the apiserver has visibility to the IP address requested by a client. If no domain patterns are provided, the names of the certificate are extracted. Non-wildcard matches trump over wildcard matches, explicit domain patterns trump over extracted names. For multiple key/certificate pairs, use the --tls-sni-cert-key multiple times. Examples: "example.crt,example.key" or "foo.crt,foo.key:*.foo.com,foo.com".--unhealthy-zone-threshold float Default: 0.55Fraction of Nodes in a zone which needs to be not Ready (minimum 3) for zone to be treated as unhealthy.--use-service-account-credentialsIf true, use individual service account credentials for each controller.-v, --v intnumber for the log level verbosity--version version[=true]--version, --version=raw prints version information and quits; --version=vX.Y.Z... sets the reported version--vmodule pattern=N,...comma-separated list of pattern=N settings for file-filtered logging (only works for text log format)This page is automatically generated.If you plan to report an issue with this page, mention that the page is auto-generated in your issue description. The fix may need to happen elsewhere in the Kubernetes project.