/usr/bin/cloud-controller-manager

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

Usage:
  cloud-controller-manager [flags]

Debugging flags:

      --contention-profiling   Enable block profiling, if profiling is enabled
      --profiling              Enable profiling via web interface host:port/debug/pprof/ (default true)

Leader-migration flags:

      --enable-leader-migration          Whether to enable controller leader migration.
      --leader-migration-config string   Path 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.

Generic flags:

      --allocate-node-cidrs                      Should CIDRs for Pods be allocated and set on the cloud provider.
      --cidr-allocator-type string               Type of CIDR allocator to use (default "RangeAllocator")
      --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. (default "azure")
      --cluster-cidr string                      CIDR Range for Pods in cluster. Requires --allocate-node-cidrs to be true
      --cluster-name string                      The instance prefix for the cluster. (default "kubernetes")
      --configure-cloud-routes                   Should CIDRs allocated by allocate-node-cidrs be configured on the cloud provider. (default true)
      --controller-start-interval duration       Interval between starting controller managers.
      --controllers strings                      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-controller, cloud-node-lifecycle-controller, node-ipam, node-route-controller, service-lb-controller
                                                 Disabled-by-default controllers:  (default [*])
      --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-ipam-controller, persistentvolume-binder-controller, persistentvolume-expander-controller and attach-detach-controller 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:
                                                 APIResponseCompression=true|false (BETA - default=true)
                                                 APIServerIdentity=true|false (BETA - default=true)
                                                 APIServerTracing=true|false (BETA - default=true)
                                                 APIServingWithRoutine=true|false (ALPHA - default=false)
                                                 AllAlpha=true|false (ALPHA - default=false)
                                                 AllBeta=true|false (BETA - default=false)
                                                 AnonymousAuthConfigurableEndpoints=true|false (ALPHA - default=false)
                                                 AuthorizeWithSelectors=true|false (ALPHA - default=false)
                                                 CloudControllerManagerWebhook=true|false (ALPHA - default=false)
                                                 ComponentSLIs=true|false (BETA - default=true)
                                                 ConcurrentWatchObjectDecode=true|false (BETA - default=false)
                                                 ConsistentListFromCache=true|false (BETA - default=true)
                                                 CoordinatedLeaderElection=true|false (ALPHA - default=false)
                                                 InPlacePodVerticalScaling=true|false (ALPHA - default=false)
                                                 OpenAPIEnums=true|false (BETA - default=true)
                                                 ResilientWatchCacheInitialization=true|false (BETA - default=true)
                                                 RetryGenerateName=true|false (BETA - default=true)
                                                 SeparateCacheWatchRPC=true|false (BETA - default=true)
                                                 StorageVersionAPI=true|false (ALPHA - default=false)
                                                 StorageVersionHash=true|false (BETA - default=true)
                                                 StrictCostEnforcementForVAP=true|false (BETA - default=false)
                                                 StrictCostEnforcementForWebhooks=true|false (BETA - default=false)
                                                 StructuredAuthenticationConfiguration=true|false (BETA - default=true)
                                                 StructuredAuthorizationConfiguration=true|false (BETA - default=true)
                                                 UnauthenticatedHTTP2DOSMitigation=true|false (BETA - default=true)
                                                 WatchCacheInitializationPostStartHook=true|false (BETA - default=false)
                                                 WatchFromStorageWithoutResourceVersion=true|false (BETA - default=false)
                                                 WatchList=true|false (ALPHA - default=false)
      --kube-api-burst int32                     Burst to use while talking with kubernetes apiserver. (default 30)
      --kube-api-content-type string             Content type of requests sent to apiserver. (default "application/vnd.kubernetes.protobuf")
      --kube-api-qps float32                     QPS to use while talking with kubernetes apiserver. (default 20)
      --leader-elect                             Start a leader election client and gain leadership before executing the main loop. Enable this when running replicated components for high availability. (default true)
      --leader-elect-lease-duration duration     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. (default 15s)
      --leader-elect-renew-deadline duration     The 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. (default 10s)
      --leader-elect-resource-lock string        The type of resource object that is used for locking during leader election. Supported options are 'leases', 'endpointsleases' and 'configmapsleases'. (default "leases")
      --leader-elect-resource-name string        The name of resource object that is used for locking during leader election. (default "cloud-controller-manager")
      --leader-elect-resource-namespace string   The namespace of resource object that is used for locking during leader election. (default "kube-system")
      --leader-elect-retry-period duration       The duration the clients should wait between attempting acquisition and renewal of a leadership. This is only applicable if leader election is enabled. (default 2s)
      --min-resync-period duration               The resync period in reflectors will be random between MinResyncPeriod and 2*MinResyncPeriod. (default 12h0m0s)
      --node-monitor-period duration             The period for syncing NodeStatus in cloud-node-lifecycle-controller. (default 5s)
      --route-reconciliation-period duration     The period for reconciling routes created for Nodes by cloud provider. (default 10s)
      --use-service-account-credentials          If true, use individual service account credentials for each controller.

Service controller flags:

      --concurrent-service-syncs int32   The number of services that are allowed to sync concurrently. Larger number = more responsive service management, but more CPU (and network) load (default 1)

Node ipam controller flags:

      --node-cidr-mask-size int32         Mask size for node cidr in cluster. Default is 24 for IPv4 and 64 for IPv6. (default 24)
      --node-cidr-mask-size-ipv4 int32    Mask size for IPv4 node cidr in dual-stack cluster. Default is 24.
      --node-cidr-mask-size-ipv6 int32    Mask size for IPv6 node cidr in dual-stack cluster. Default is 64.
      --service-cluster-ip-range string   CIDR Range for Services in cluster. Requires --allocate-node-cidrs to be true

Secure serving flags:

      --bind-address ip                        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 or an unspecified address (0.0.0.0 or ::), all interfaces and IP address families will be used. (default 0.0.0.0)
      --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.
      --disable-http2-serving                  If true, HTTP2 serving will be disabled [default=false]
      --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.
      --permit-address-sharing                 If 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-sharing                    If 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]
      --secure-port int                        The port on which to serve HTTPS with authentication and authorization. If 0, don't serve HTTPS at all. (default 10258)
      --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 strings              Comma-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 string                 Minimum TLS version supported. Possible values: VersionTLS10, VersionTLS11, VersionTLS12, VersionTLS13
      --tls-private-key-file string            File containing the default x509 private key matching --tls-cert-file.
      --tls-sni-cert-key namedCertKey          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. 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". (default [])

Authentication flags:

      --authentication-kubeconfig string                  kubeconfig 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-lookup                        If false, the authentication-kubeconfig will be used to lookup missing authentication configuration from the cluster.
      --authentication-token-webhook-cache-ttl duration   The duration to cache responses from the webhook token authenticator. (default 10s)
      --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.
      --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.
      --requestheader-allowed-names strings               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 strings        List of request header prefixes to inspect. X-Remote-Extra- is suggested. (default [x-remote-extra-])
      --requestheader-group-headers strings               List of request headers to inspect for groups. X-Remote-Group is suggested. (default [x-remote-group])
      --requestheader-username-headers strings            List of request headers to inspect for usernames. X-Remote-User is common. (default [x-remote-user])

Authorization flags:

      --authorization-always-allow-paths strings                A list of HTTP paths to skip during authorization, i.e. these are authorized without contacting the 'core' kubernetes server. (default [/healthz,/readyz,/livez])
      --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     The duration to cache 'authorized' responses from the webhook authorizer. (default 10s)
      --authorization-webhook-cache-unauthorized-ttl duration   The duration to cache 'unauthorized' responses from the webhook authorizer. (default 10s)

Dynamic reloading flags:

      --cloud-config-key string                The key of the config data in the cloud config secret, default to 'cloud-config'. (default "cloud-config")
      --cloud-config-secret-name string        The name of the cloud config secret.
      --cloud-config-secret-namespace string   The k8s namespace of the cloud config secret, default to 'kube-system'. (default "kube-system")
      --enable-dynamic-reloading               Enable re-configuring cloud controller manager from secret without restarting.

Misc flags:

      --kubeconfig string                       Path to kubeconfig file with authorization and master location information.
      --master string                           The address of the Kubernetes API server (overrides any value in kubeconfig).
      --node-status-update-frequency duration   Specifies how often the controller updates nodes' status. (default 5m0s)

Node filtering flags:

      --node-filter-requirements string   Label selector for nodes to be managed by CCM (e.g., 'foo=bar' or 'foo in (bar,baz)')

Global flags:

  -h, --help                           help for cloud-controller-manager
      --log-flush-frequency duration   Maximum number of seconds between log flushes (default 5s)
  -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 (only works for the default text log format)