kube-controller-manager

概述

Kubernetes 控制器管理器是一个守护进程，嵌入了 Kubernetes 附带的核心控制循环。 在机器人和自动化的应用中，控制回路是一个永不休止的循环，用于调节系统状态。 在 Kubernetes 中，控制器是一个控制循环，它通过 apiserver 监视集群的共享状态，并尝试进行更改以将当前状态转为所需状态。现今，Kubernetes 自带的控制器包括副本控制器，节点控制器，命名空间控制器和serviceaccounts 控制器。

  1. kube-controller-manager [flags]

选项

—allocate-node-cidrs
Should CIDRs for Pods be allocated and set on the cloud provider.
—alsologtostderr
log to standard error as well as files
—attach-detach-reconcile-sync-period duration     Default: 1m0s
The 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 string
kubeconfig file pointing at the ‘core’ kubernetes server with enough rights to create tokenaccessreviews.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-lookup
If false, the authentication-kubeconfig will be used to lookup missing authentication configuration from the cluster.
—authentication-token-webhook-cache-ttl duration     Default: 10s
The duration to cache responses from the webhook token authenticator.
—authentication-tolerate-lookup-failure
If 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 stringSlice     Default: [/healthz]
A list of HTTP paths to skip during authorization, i.e. these are authorized without contacting the ‘core’ kubernetes server.
—authorization-kubeconfig string
kubeconfig 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: 10s
The duration to cache ‘authorized’ responses from the webhook authorizer.
—authorization-webhook-cache-unauthorized-ttl duration     Default: 10s
The duration to cache ‘unauthorized’ responses from the webhook authorizer.
—azure-container-registry-config string
Path to the file containing Azure container registry configuration information.
—bind-address ip     Default: 0.0.0.0
The 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, all interfaces will be used (0.0.0.0 for all IPv4 interfaces and :: for all IPv6 interfaces).
—cert-dir string
The 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 string
If 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 string
The path to the cloud provider configuration file. Empty string for no configuration file.
—cloud-provider string
The provider for cloud services. Empty string for no provider.
—cluster-cidr string
CIDR Range for Pods in cluster. Requires —allocate-node-cidrs to be true
—cluster-name string     Default: “kubernetes”
The instance prefix for the cluster.
—cluster-signing-cert-file string     Default: “/etc/kubernetes/ca/ca.pem”
Filename containing a PEM-encoded X509 CA certificate used to issue cluster-scoped certificates
—cluster-signing-key-file string     Default: “/etc/kubernetes/ca/ca.key”
Filename containing a PEM-encoded RSA or ECDSA private key used to sign cluster-scoped certificates
—concurrent-deployment-syncs int32     Default: 5
The 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: 5
The number of endpoint syncing operations that will be done concurrently. Larger number = faster endpoint updating, but more CPU (and network) load
—concurrent-gc-syncs int32     Default: 20
The number of garbage collector workers that are allowed to sync concurrently.
—concurrent-namespace-syncs int32     Default: 10
The number of namespace objects that are allowed to sync concurrently. Larger number = more responsive namespace termination, but more CPU (and network) load
—concurrent-replicaset-syncs int32     Default: 5
The 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: 5
The number of resource quotas that are allowed to sync concurrently. Larger number = more responsive quota management, but more CPU (and network) load
—concurrent-service-syncs int32     Default: 1
The 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: 5
The 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-ttl-after-finished-syncs int32     Default: 5
The number of TTL-after-finished controller workers that are allowed to sync concurrently.
—concurrent_rc_syncs int32     Default: 5
The number of replication controllers that are allowed to sync concurrently. Larger number = more responsive replica management, but more CPU (and network) load
—configure-cloud-routes     Default: true
Should CIDRs allocated by allocate-node-cidrs be configured on the cloud provider.
—contention-profiling
Enable lock contention profiling, if profiling is enabled
—controller-start-interval duration
Interval between starting controller managers.
—controllers stringSlice     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: attachdetach, bootstrapsigner, cloud-node-lifecycle, clusterrole-aggregation, cronjob, csrapproving, csrcleaner, csrsigning, daemonset, deployment, disruption, endpoint, garbagecollector, horizontalpodautoscaling, job, namespace, nodeipam, nodelifecycle, persistentvolume-binder, persistentvolume-expander, podgc, pv-protection, pvc-protection, replicaset, replicationcontroller, resourcequota, root-ca-cert-publisher, route, service, serviceaccount, serviceaccount-token, statefulset, tokencleaner, ttl, ttl-after-finished
Disabled-by-default controllers: bootstrapsigner, tokencleaner
—deployment-controller-sync-period duration     Default: 30s
Period for syncing the deployments.
—disable-attach-detach-reconcile-sync
Disable volume attach detach reconciler sync. Disabling this may cause volumes to be mismatched with pods. Use wisely.
—enable-dynamic-provisioning     Default: true
Enable dynamic provisioning for environments that support it.
—enable-garbage-collector     Default: true
Enables the generic garbage collector. MUST be synced with the corresponding flag of the kube-apiserver.
—enable-hostpath-provisioner
Enable 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-taint-manager     Default: true
WARNING: Beta feature. If set to true enables NoExecute Taints and will evict all not-tolerating Pod running on Nodes tainted with this kind of Taints.
—experimental-cluster-signing-duration duration     Default: 8760h0m0s
The length of duration signed certificates will be given.
—external-cloud-volume-plugin string
The 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 and volume controllers to work for in tree cloud providers.
—feature-gates mapStringBool
A set of key=value pairs that describe feature gates for alpha/experimental features. Options are:
APIListChunking=true|false (BETA - default=true)
APIResponseCompression=true|false (ALPHA - default=false)
AllAlpha=true|false (ALPHA - default=false)
AppArmor=true|false (BETA - default=true)
AttachVolumeLimit=true|false (BETA - default=true)
BalanceAttachedNodeVolumes=true|false (ALPHA - default=false)
BlockVolume=true|false (BETA - default=true)
BoundServiceAccountTokenVolume=true|false (ALPHA - default=false)
CPUManager=true|false (BETA - default=true)
CRIContainerLogRotation=true|false (BETA - default=true)
CSIBlockVolume=true|false (BETA - default=true)
CSIDriverRegistry=true|false (BETA - default=true)
CSIInlineVolume=true|false (ALPHA - default=false)
CSIMigration=true|false (ALPHA - default=false)
CSIMigrationAWS=true|false (ALPHA - default=false)
CSIMigrationGCE=true|false (ALPHA - default=false)
CSIMigrationOpenStack=true|false (ALPHA - default=false)
CSINodeInfo=true|false (BETA - default=true)
CustomCPUCFSQuotaPeriod=true|false (ALPHA - default=false)
CustomResourcePublishOpenAPI=true|false (ALPHA - default=false)
CustomResourceSubresources=true|false (BETA - default=true)
CustomResourceValidation=true|false (BETA - default=true)
CustomResourceWebhookConversion=true|false (ALPHA - default=false)
DebugContainers=true|false (ALPHA - default=false)
DevicePlugins=true|false (BETA - default=true)
DryRun=true|false (BETA - default=true)
DynamicAuditing=true|false (ALPHA - default=false)
DynamicKubeletConfig=true|false (BETA - default=true)
ExpandCSIVolumes=true|false (ALPHA - default=false)
ExpandInUsePersistentVolumes=true|false (ALPHA - default=false)
ExpandPersistentVolumes=true|false (BETA - default=true)
ExperimentalCriticalPodAnnotation=true|false (ALPHA - default=false)
ExperimentalHostUserNamespaceDefaulting=true|false (BETA - default=false)
HyperVContainer=true|false (ALPHA - default=false)
KubeletPodResources=true|false (ALPHA - default=false)
LocalStorageCapacityIsolation=true|false (BETA - default=true)
MountContainers=true|false (ALPHA - default=false)
NodeLease=true|false (BETA - default=true)
PodShareProcessNamespace=true|false (BETA - default=true)
ProcMountType=true|false (ALPHA - default=false)
QOSReserved=true|false (ALPHA - default=false)
ResourceLimitsPriorityFunction=true|false (ALPHA - default=false)
ResourceQuotaScopeSelectors=true|false (BETA - default=true)
RotateKubeletClientCertificate=true|false (BETA - default=true)
RotateKubeletServerCertificate=true|false (BETA - default=true)
RunAsGroup=true|false (BETA - default=true)
RuntimeClass=true|false (BETA - default=true)
SCTPSupport=true|false (ALPHA - default=false)
ScheduleDaemonSetPods=true|false (BETA - default=true)
ServerSideApply=true|false (ALPHA - default=false)
ServiceNodeExclusion=true|false (ALPHA - default=false)
StorageVersionHash=true|false (ALPHA - default=false)
StreamingProxyRedirects=true|false (BETA - default=true)
SupportNodePidsLimit=true|false (ALPHA - default=false)
SupportPodPidsLimit=true|false (BETA - default=true)
Sysctls=true|false (BETA - default=true)
TTLAfterFinished=true|false (ALPHA - default=false)
TaintBasedEvictions=true|false (BETA - default=true)
TaintNodesByCondition=true|false (BETA - default=true)
TokenRequest=true|false (BETA - default=true)
TokenRequestProjection=true|false (BETA - default=true)
ValidateProxyRedirects=true|false (BETA - default=true)
VolumeSnapshotDataSource=true|false (ALPHA - default=false)
VolumeSubpathEnvExpansion=true|false (ALPHA - default=false)
WinDSR=true|false (ALPHA - default=false)
WinOverlay=true|false (ALPHA - default=false)
WindowsGMSA=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, —help
help for kube-controller-manager
—horizontal-pod-autoscaler-cpu-initialization-period duration     Default: 5m0s
The period after pod start when CPU samples might be skipped.
—horizontal-pod-autoscaler-downscale-stabilization duration     Default: 5m0s
The 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: 30s
The period after pod start during which readiness changes will be treated as initial readiness.
—horizontal-pod-autoscaler-sync-period duration     Default: 15s
The period for syncing the number of pods in horizontal pod autoscaler.
—horizontal-pod-autoscaler-tolerance float     Default: 0.1
The 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 int
The 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: 30
Burst 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 float32     Default: 20
QPS to use while talking with kubernetes apiserver.
—kubeconfig string
Path to kubeconfig file with authorization and master location information.
—large-cluster-size-threshold int32     Default: 50
Number of nodes from which NodeController 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.
—leader-elect     Default: true
Start 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: 15s
The 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: 10s
The interval between attempts by the acting master to renew a leadership slot before it stops leading. This must be less than or equal to the lease duration. This is only applicable if leader election is enabled.
—leader-elect-resource-lock endpoints     Default: “endpoints”
The type of resource object that is used for locking during leader election. Supported options are endpoints (default) and configmaps.
—leader-elect-retry-period duration     Default: 2s
The duration the clients should wait between attempting acquisition and renewal of a leadership. This is only applicable if leader election is enabled.
—log-backtrace-at traceLocation     Default: :0
when logging hits line file:N, emit a stack trace
—log-dir string
If non-empty, write log files in this directory
—log-file string
If non-empty, use this log file
—log-flush-frequency duration     Default: 5s
Maximum number of seconds between log flushes
—logtostderr     Default: true
log to standard error instead of files
—master string
The address of the Kubernetes API server (overrides any value in kubeconfig).
—min-resync-period duration     Default: 12h0m0s
The resync period in reflectors will be random between MinResyncPeriod and 2MinResyncPeriod.
—namespace-sync-period duration     Default: 5m0s
The period for syncing namespace life-cycle updates
—node-cidr-mask-size int32     Default: 24
Mask size for node cidr in cluster.
—node-eviction-rate float32     Default: 0.1
Number 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: 40s
Amount 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.
—node-monitor-period duration     Default: 5s
The period for syncing NodeStatus in NodeController.
—node-startup-grace-period duration     Default: 1m0s
Amount of time which we allow starting Node to be unresponsive before marking it unhealthy.
—pod-eviction-timeout duration     Default: 5m0s
The grace period for deleting pods on failed nodes.
—profiling
Enable profiling via web interface host:port/debug/pprof/
—pv-recycler-increment-timeout-nfs int32     Default: 30
the increment of time added per Gi to ActiveDeadlineSeconds for an NFS scrubber pod
—pv-recycler-minimum-timeout-hostpath int32     Default: 60
The 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: 300
The minimum ActiveDeadlineSeconds to use for an NFS Recycler pod
—pv-recycler-pod-template-filepath-hostpath string
The 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 string
The file path to a pod definition used as a template for NFS persistent volume recycling
—pv-recycler-timeout-increment-hostpath int32     Default: 30
the 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: 15s
The period for syncing persistent volumes and persistent volume claims
—requestheader-allowed-names stringSlice
List 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 string
Root 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 stringSlice     Default: [x-remote-extra-]
List of request header prefixes to inspect. X-Remote-Extra- is suggested.
—requestheader-group-headers stringSlice     Default: [x-remote-group]
List of request headers to inspect for groups. X-Remote-Group is suggested.
—requestheader-username-headers stringSlice     Default: [x-remote-user]
List of request headers to inspect for usernames. X-Remote-User is common.
—resource-quota-sync-period duration     Default: 5m0s
The period for syncing quota usage status in the system
—root-ca-file string
If 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: 10s
The period for reconciling routes created for Nodes by cloud provider.
—secondary-node-eviction-rate float32     Default: 0.01
Number 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: 10257
The port on which to serve HTTPS with authentication and authorization.If 0, don’t serve HTTPS at all.
—service-account-private-key-file string
Filename containing a PEM-encoded private RSA or ECDSA key used to sign service account tokens.
—service-cluster-ip-range string
CIDR Range for Services in cluster. Requires —allocate-node-cidrs to be true
—skip-headers
If true, avoid header prefixes in the log messages
—stderrthreshold severity     Default: 2
logs at or above this threshold go to stderr
—terminated-pod-gc-threshold int32     Default: 12500
Number 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 string
File 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 stringSlice
Comma-separated list of cipher suites for the server. If omitted, the default Go cipher suites will be use. Possible values: TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,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_RC4_128_SHA,TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,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_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 string
Minimum TLS version supported. Possible values: VersionTLS10, VersionTLS11, VersionTLS12
—tls-private-key-file string
File containing the default x509 private key matching —tls-cert-file.
—tls-sni-cert-key namedCertKey     Default: []
A 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. 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 float32     Default: 0.55
Fraction of Nodes in a zone which needs to be not Ready (minimum 3) for zone to be treated as unhealthy.
—use-service-account-credentials
If true, use individual service account credentials for each controller.
-v, —v Level
number for the log level verbosity
—version version[=true]
Print version information and quit
—vmodule moduleSpec
comma-separated list of pattern=N settings for file-filtered logging