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

cloud-controller-manager [flags]


Should CIDRs for Pods be allocated and set on the cloud provider.
log to standard error as well as files
--authentication-kubeconfig string
kubeconfig file pointing at the 'core' kubernetes server with enough rights to create This is optional. If empty, all token requests are considered to be anonymous and no client CA is looked up in the cluster.
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.
--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 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:
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 ( 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:,,,
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.
Enable lock contention profiling, if profiling is enabled
--controller-start-interval duration
Interval between starting controller managers.
--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 (ALPHA - default=false)
CSIDriverRegistry=true|false (ALPHA - default=false)
CSINodeInfo=true|false (ALPHA - default=false)
CustomCPUCFSQuotaPeriod=true|false (ALPHA - default=false)
CustomPodDNS=true|false (BETA - default=true)
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)
EnableEquivalenceClassCache=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)
HugePages=true|false (BETA - default=true)
HyperVContainer=true|false (ALPHA - default=false)
Initializers=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 (ALPHA - default=false)
PersistentLocalVolumes=true|false (BETA - default=true)
PodPriority=true|false (BETA - default=true)
PodReadinessGates=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 (ALPHA - default=false)
RuntimeClass=true|false (ALPHA - default=false)
SCTPSupport=true|false (ALPHA - default=false)
ScheduleDaemonSetPods=true|false (BETA - default=true)
ServiceNodeExclusion=true|false (ALPHA - default=false)
StreamingProxyRedirects=true|false (BETA - default=true)
SupportPodPidsLimit=true|false (ALPHA - default=false)
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 (ALPHA - default=false)
VolumeSnapshotDataSource=true|false (ALPHA - default=false)
VolumeSubpathEnvExpansion=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.
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.
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
--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:*,".
If true, use individual service account credentials for each controller.
-v, --v Level
log level for V logs
--version version[=true]
Print version information and quit
--vmodule moduleSpec
comma-separated list of pattern=N settings for file-filtered logging