cloud-controller-manager

Kubernetes v1.15 documentation is no longer actively maintained. The version you are currently viewing is a static snapshot. For up-to-date documentation, see the latest version.

Synopsis

The Cloud controller manager is a daemon that embeds the cloud specific control loops shipped with Kubernetes.

cloud-controller-manager [flags]

Options

--allocate-node-cidrs

Should CIDRs for Pods be allocated and set on the cloud provider.

--alsologtostderr

log to standard error as well as files

--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.

--cloud-provider-gce-lb-src-cidrs cidrs Default: 130.211.0.0/22,209.85.152.0/22,209.85.204.0/22,35.191.0.0/16

CIDRs opened in GCE firewall for LB traffic proxy & health checks

--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.

--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

--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: cloud-node, cloud-node-lifecycle, route, service
Disabled-by-default controllers:

--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)

-h, --help

help for cloud-controller-manager

--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.

--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 2*MinResyncPeriod.

--node-monitor-period duration Default: 5s

The period for syncing NodeStatus in NodeController.

--node-status-update-frequency duration Default: 5m0s

Specifies how often the controller updates nodes' status.

--profiling

Enable profiling via web interface host:port/debug/pprof/

--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.

--route-reconciliation-period duration Default: 10s

The period for reconciling routes created for Nodes by cloud provider.

--secure-port int Default: 10258

The port on which to serve HTTPS with authentication and authorization.If 0, don't serve HTTPS at all.

--skip-headers

If true, avoid header prefixes in the log messages

--stderrthreshold severity Default: 2

logs at or above this threshold go to stderr

--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".

--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

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Reference

Kubernetes v1.15 documentation is no longer actively maintained. The version you are currently viewing is a static snapshot. For up-to-date documentation, see the latest version.