27 KiB
27 KiB
| title | notitle |
|---|---|
| kube-controller-manager | true |
kube-controller-manager
Synopsis
The 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
Options
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<td colspan="2">--address ip Default: 0.0.0.0</td>
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<td></td><td style="line-height: 130%">The IP address to serve on (set to 0.0.0.0 for all interfaces).</td>
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<td colspan="2">--allocate-node-cidrs</td>
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<td></td><td style="line-height: 130%">Should CIDRs for Pods be allocated and set on the cloud provider.</td>
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<td colspan="2">--attach-detach-reconcile-sync-period duration Default: 1m0s</td>
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<td></td><td style="line-height: 130%">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.</td>
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<td colspan="2">--azure-container-registry-config string</td>
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<td></td><td style="line-height: 130%">Path to the file container Azure container registry configuration information.</td>
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<td colspan="2">--cidr-allocator-type string Default: "RangeAllocator"</td>
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<td></td><td style="line-height: 130%">Type of CIDR allocator to use</td>
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<td colspan="2">--cloud-config string</td>
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<td></td><td style="line-height: 130%">The path to the cloud provider configuration file. Empty string for no configuration file.</td>
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<td colspan="2">--cloud-provider string</td>
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<td></td><td style="line-height: 130%">The provider for cloud services. Empty string for no provider.</td>
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<td colspan="2">--cluster-cidr string</td>
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<td></td><td style="line-height: 130%">CIDR Range for Pods in cluster. Requires --allocate-node-cidrs to be true</td>
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<td colspan="2">--cluster-name string Default: "kubernetes"</td>
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<td></td><td style="line-height: 130%">The instance prefix for the cluster.</td>
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<td colspan="2">--cluster-signing-cert-file string Default: "/etc/kubernetes/ca/ca.pem"</td>
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<td></td><td style="line-height: 130%">Filename containing a PEM-encoded X509 CA certificate used to issue cluster-scoped certificates</td>
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<td colspan="2">--cluster-signing-key-file string Default: "/etc/kubernetes/ca/ca.key"</td>
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<td></td><td style="line-height: 130%">Filename containing a PEM-encoded RSA or ECDSA private key used to sign cluster-scoped certificates</td>
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<td colspan="2">--concurrent-deployment-syncs int32 Default: 5</td>
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<td></td><td style="line-height: 130%">The number of deployment objects that are allowed to sync concurrently. Larger number = more responsive deployments, but more CPU (and network) load</td>
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<td colspan="2">--concurrent-endpoint-syncs int32 Default: 5</td>
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<td></td><td style="line-height: 130%">The number of endpoint syncing operations that will be done concurrently. Larger number = faster endpoint updating, but more CPU (and network) load</td>
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<td colspan="2">--concurrent-gc-syncs int32 Default: 20</td>
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<td></td><td style="line-height: 130%">The number of garbage collector workers that are allowed to sync concurrently.</td>
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<td colspan="2">--concurrent-namespace-syncs int32 Default: 10</td>
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<td></td><td style="line-height: 130%">The number of namespace objects that are allowed to sync concurrently. Larger number = more responsive namespace termination, but more CPU (and network) load</td>
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<td colspan="2">--concurrent-replicaset-syncs int32 Default: 5</td>
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<td></td><td style="line-height: 130%">The number of replica sets that are allowed to sync concurrently. Larger number = more responsive replica management, but more CPU (and network) load</td>
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<td colspan="2">--concurrent-resource-quota-syncs int32 Default: 5</td>
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<td></td><td style="line-height: 130%">The number of resource quotas that are allowed to sync concurrently. Larger number = more responsive quota management, but more CPU (and network) load</td>
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<td colspan="2">--concurrent-service-syncs int32 Default: 1</td>
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<td></td><td style="line-height: 130%">The number of services that are allowed to sync concurrently. Larger number = more responsive service management, but more CPU (and network) load</td>
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<td colspan="2">--concurrent-serviceaccount-token-syncs int32 Default: 5</td>
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<td></td><td style="line-height: 130%">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</td>
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<td colspan="2">--concurrent_rc_syncs int32 Default: 5</td>
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<td></td><td style="line-height: 130%">The number of replication controllers that are allowed to sync concurrently. Larger number = more responsive replica management, but more CPU (and network) load</td>
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<td colspan="2">--configure-cloud-routes Default: true</td>
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<td></td><td style="line-height: 130%">Should CIDRs allocated by allocate-node-cidrs be configured on the cloud provider.</td>
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<td colspan="2">--contention-profiling</td>
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<td></td><td style="line-height: 130%">Enable lock contention profiling, if profiling is enabled.</td>
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<td colspan="2">--controller-start-interval duration</td>
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<td></td><td style="line-height: 130%">Interval between starting controller managers.</td>
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<td colspan="2">--controllers stringSlice Default: [*]</td>
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<td></td><td style="line-height: 130%">A list of controllers to enable. '*' enables all on-by-default controllers, 'foo' enables the controller named 'foo', '-foo' disables the controller named 'foo'.<br/>All controllers: attachdetach, bootstrapsigner, clusterrole-aggregation, cronjob, csrapproving, csrcleaner, csrsigning, daemonset, deployment, disruption, endpoint, garbagecollector, horizontalpodautoscaling, job, namespace, nodeipam, nodelifecycle, persistentvolume-binder, persistentvolume-expander, podgc, pvc-protection, replicaset, replicationcontroller, resourcequota, route, service, serviceaccount, serviceaccount-token, statefulset, tokencleaner, ttl<br/>Disabled-by-default controllers: bootstrapsigner, tokencleaner</td>
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<td colspan="2">--deployment-controller-sync-period duration Default: 30s</td>
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<td></td><td style="line-height: 130%">Period for syncing the deployments.</td>
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<td colspan="2">--disable-attach-detach-reconcile-sync</td>
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<td></td><td style="line-height: 130%">Disable volume attach detach reconciler sync. Disabling this may cause volumes to be mismatched with pods. Use wisely.</td>
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<td colspan="2">--enable-dynamic-provisioning Default: true</td>
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<td></td><td style="line-height: 130%">Enable dynamic provisioning for environments that support it.</td>
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<td colspan="2">--enable-garbage-collector Default: true</td>
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<td></td><td style="line-height: 130%">Enables the generic garbage collector. MUST be synced with the corresponding flag of the kube-apiserver.</td>
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<td colspan="2">--enable-hostpath-provisioner</td>
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<td></td><td style="line-height: 130%">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.</td>
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<td colspan="2">--enable-taint-manager Default: true</td>
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<td></td><td style="line-height: 130%">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.</td>
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<td colspan="2">--experimental-cluster-signing-duration duration Default: 8760h0m0s</td>
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<td></td><td style="line-height: 130%">The length of duration signed certificates will be given.</td>
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<td colspan="2">--external-cloud-volume-plugin string</td>
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<td></td><td style="line-height: 130%">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.</td>
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<td colspan="2">--feature-gates mapStringBool</td>
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<td></td><td style="line-height: 130%">A set of key=value pairs that describe feature gates for alpha/experimental features. Options are:<br/>APIListChunking=true|false (BETA - default=true)<br/>APIResponseCompression=true|false (ALPHA - default=false)<br/>Accelerators=true|false (ALPHA - default=false)<br/>AdvancedAuditing=true|false (BETA - default=true)<br/>AllAlpha=true|false (ALPHA - default=false)<br/>AllowExtTrafficLocalEndpoints=true|false (default=true)<br/>AppArmor=true|false (BETA - default=true)<br/>BlockVolume=true|false (ALPHA - default=false)<br/>CPUManager=true|false (BETA - default=true)<br/>CSIPersistentVolume=true|false (ALPHA - default=false)<br/>CustomPodDNS=true|false (ALPHA - default=false)<br/>CustomResourceValidation=true|false (BETA - default=true)<br/>DebugContainers=true|false (ALPHA - default=false)<br/>DevicePlugins=true|false (ALPHA - default=false)<br/>DynamicKubeletConfig=true|false (ALPHA - default=false)<br/>EnableEquivalenceClassCache=true|false (ALPHA - default=false)<br/>ExpandPersistentVolumes=true|false (ALPHA - default=false)<br/>ExperimentalCriticalPodAnnotation=true|false (ALPHA - default=false)<br/>ExperimentalHostUserNamespaceDefaulting=true|false (BETA - default=false)<br/>HugePages=true|false (BETA - default=true)<br/>Initializers=true|false (ALPHA - default=false)<br/>KubeletConfigFile=true|false (ALPHA - default=false)<br/>LocalStorageCapacityIsolation=true|false (ALPHA - default=false)<br/>MountContainers=true|false (ALPHA - default=false)<br/>MountPropagation=true|false (ALPHA - default=false)<br/>PVCProtection=true|false (ALPHA - default=false)<br/>PersistentLocalVolumes=true|false (ALPHA - default=false)<br/>PodPriority=true|false (ALPHA - default=false)<br/>ResourceLimitsPriorityFunction=true|false (ALPHA - default=false)<br/>RotateKubeletClientCertificate=true|false (BETA - default=true)<br/>RotateKubeletServerCertificate=true|false (ALPHA - default=false)<br/>ServiceNodeExclusion=true|false (ALPHA - default=false)<br/>StreamingProxyRedirects=true|false (BETA - default=true)<br/>SupportIPVSProxyMode=true|false (BETA - default=false)<br/>TaintBasedEvictions=true|false (ALPHA - default=false)<br/>TaintNodesByCondition=true|false (ALPHA - default=false)<br/>VolumeScheduling=true|false (ALPHA - default=false)</td>
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<td colspan="2">--flex-volume-plugin-dir string Default: "/usr/libexec/kubernetes/kubelet-plugins/volume/exec/"</td>
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<td></td><td style="line-height: 130%">Full path of the directory in which the flex volume plugin should search for additional third party volume plugins.</td>
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<td colspan="2">--google-json-key string</td>
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<td></td><td style="line-height: 130%">The Google Cloud Platform Service Account JSON Key to use for authentication.</td>
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<td colspan="2">--horizontal-pod-autoscaler-downscale-delay duration Default: 5m0s</td>
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<td></td><td style="line-height: 130%">The period since last downscale, before another downscale can be performed in horizontal pod autoscaler.</td>
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<td colspan="2">--horizontal-pod-autoscaler-sync-period duration Default: 30s</td>
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<td></td><td style="line-height: 130%">The period for syncing the number of pods in horizontal pod autoscaler.</td>
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<td colspan="2">--horizontal-pod-autoscaler-tolerance float Default: 0.1</td>
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<td></td><td style="line-height: 130%">The minimum change (from 1.0) in the desired-to-actual metrics ratio for the horizontal pod autoscaler to consider scaling.</td>
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<td colspan="2">--horizontal-pod-autoscaler-upscale-delay duration Default: 3m0s</td>
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<td></td><td style="line-height: 130%">The period since last upscale, before another upscale can be performed in horizontal pod autoscaler.</td>
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<td colspan="2">--horizontal-pod-autoscaler-use-rest-clients Default: true</td>
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<td></td><td style="line-height: 130%">WARNING: alpha feature. If set to true, causes the horizontal pod autoscaler controller to use REST clients through the kube-aggregator, instead of using the legacy metrics client through the API server proxy. This is required for custom metrics support in the horizontal pod autoscaler.</td>
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<td colspan="2">--insecure-experimental-approve-all-kubelet-csrs-for-group string</td>
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<td></td><td style="line-height: 130%">This flag does nothing.</td>
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<td colspan="2">--kube-api-burst int32 Default: 30</td>
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<td></td><td style="line-height: 130%">Burst to use while talking with kubernetes apiserver.</td>
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<td colspan="2">--kube-api-content-type string Default: "application/vnd.kubernetes.protobuf"</td>
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<td></td><td style="line-height: 130%">Content type of requests sent to apiserver.</td>
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<td colspan="2">--kube-api-qps float32 Default: 20</td>
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<td></td><td style="line-height: 130%">QPS to use while talking with kubernetes apiserver.</td>
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<td colspan="2">--kubeconfig string</td>
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<td></td><td style="line-height: 130%">Path to kubeconfig file with authorization and master location information.</td>
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<td colspan="2">--large-cluster-size-threshold int32 Default: 50</td>
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<td></td><td style="line-height: 130%">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.</td>
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<td colspan="2">--leader-elect Default: true</td>
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<td></td><td style="line-height: 130%">Start a leader election client and gain leadership before executing the main loop. Enable this when running replicated components for high availability.</td>
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<td colspan="2">--leader-elect-lease-duration duration Default: 15s</td>
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<td></td><td style="line-height: 130%">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.</td>
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<td colspan="2">--leader-elect-renew-deadline duration Default: 10s</td>
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<td></td><td style="line-height: 130%">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.</td>
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<td colspan="2">--leader-elect-resource-lock endpoints Default: "endpoints"</td>
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<td></td><td style="line-height: 130%">The type of resource object that is used for locking during leader election. Supported options are endpoints (default) and `configmaps`.</td>
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<td colspan="2">--leader-elect-retry-period duration Default: 2s</td>
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<td></td><td style="line-height: 130%">The duration the clients should wait between attempting acquisition and renewal of a leadership. This is only applicable if leader election is enabled.</td>
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<td colspan="2">--master string</td>
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<td></td><td style="line-height: 130%">The address of the Kubernetes API server (overrides any value in kubeconfig).</td>
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<td colspan="2">--min-resync-period duration Default: 12h0m0s</td>
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<td></td><td style="line-height: 130%">The resync period in reflectors will be random between MinResyncPeriod and 2*MinResyncPeriod.</td>
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<td colspan="2">--namespace-sync-period duration Default: 5m0s</td>
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<td></td><td style="line-height: 130%">The period for syncing namespace life-cycle updates</td>
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<td colspan="2">--node-cidr-mask-size int32 Default: 24</td>
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<td></td><td style="line-height: 130%">Mask size for node cidr in cluster.</td>
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<td colspan="2">--node-eviction-rate float32 Default: 0.1</td>
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<td></td><td style="line-height: 130%">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.</td>
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<td colspan="2">--node-monitor-grace-period duration Default: 40s</td>
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<td></td><td style="line-height: 130%">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.</td>
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<td colspan="2">--node-monitor-period duration Default: 5s</td>
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<td></td><td style="line-height: 130%">The period for syncing NodeStatus in NodeController.</td>
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<td colspan="2">--node-startup-grace-period duration Default: 1m0s</td>
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<td></td><td style="line-height: 130%">Amount of time which we allow starting Node to be unresponsive before marking it unhealthy.</td>
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<td colspan="2">--pod-eviction-timeout duration Default: 5m0s</td>
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<td></td><td style="line-height: 130%">The grace period for deleting pods on failed nodes.</td>
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<td colspan="2">--port int32 Default: 10252</td>
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<td></td><td style="line-height: 130%">The port that the controller-manager's http service runs on.</td>
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<td colspan="2">--profiling Default: true</td>
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<td></td><td style="line-height: 130%">Enable profiling via web interface host:port/debug/pprof/</td>
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<td colspan="2">--pv-recycler-increment-timeout-nfs int32 Default: 30</td>
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<td></td><td style="line-height: 130%">the increment of time added per Gi to ActiveDeadlineSeconds for an NFS scrubber pod</td>
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<td colspan="2">--pv-recycler-minimum-timeout-hostpath int32 Default: 60</td>
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<td></td><td style="line-height: 130%">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.</td>
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<td colspan="2">--pv-recycler-minimum-timeout-nfs int32 Default: 300</td>
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<td></td><td style="line-height: 130%">The minimum ActiveDeadlineSeconds to use for an NFS Recycler pod</td>
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<td colspan="2">--pv-recycler-pod-template-filepath-hostpath string</td>
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<td></td><td style="line-height: 130%">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.</td>
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<td colspan="2">--pv-recycler-pod-template-filepath-nfs string</td>
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<td></td><td style="line-height: 130%">The file path to a pod definition used as a template for NFS persistent volume recycling</td>
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<td colspan="2">--pv-recycler-timeout-increment-hostpath int32 Default: 30</td>
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<td></td><td style="line-height: 130%">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.</td>
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<td colspan="2">--pvclaimbinder-sync-period duration Default: 15s</td>
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<td></td><td style="line-height: 130%">The period for syncing persistent volumes and persistent volume claims</td>
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<td colspan="2">--resource-quota-sync-period duration Default: 5m0s</td>
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<td></td><td style="line-height: 130%">The period for syncing quota usage status in the system</td>
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<td colspan="2">--root-ca-file string</td>
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<td></td><td style="line-height: 130%">If set, this root certificate authority will be included in service account's token secret. This must be a valid PEM-encoded CA bundle.</td>
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<td colspan="2">--route-reconciliation-period duration Default: 10s</td>
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<td></td><td style="line-height: 130%">The period for reconciling routes created for Nodes by cloud provider.</td>
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<td colspan="2">--secondary-node-eviction-rate float32 Default: 0.01</td>
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<td></td><td style="line-height: 130%">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.</td>
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<td colspan="2">--service-account-private-key-file string</td>
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<td></td><td style="line-height: 130%">Filename containing a PEM-encoded private RSA or ECDSA key used to sign service account tokens.</td>
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<td colspan="2">--service-cluster-ip-range string</td>
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<td></td><td style="line-height: 130%">CIDR Range for Services in cluster. Requires --allocate-node-cidrs to be true</td>
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<td colspan="2">--service-sync-period duration Default: 5m0s</td>
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<td></td><td style="line-height: 130%">The period for syncing services with their external load balancers</td>
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<td colspan="2">--terminated-pod-gc-threshold int32 Default: 12500</td>
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<td></td><td style="line-height: 130%">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.</td>
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<td colspan="2">--unhealthy-zone-threshold float32 Default: 0.55</td>
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<td></td><td style="line-height: 130%">Fraction of Nodes in a zone which needs to be not Ready (minimum 3) for zone to be treated as unhealthy. </td>
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<td colspan="2">--use-service-account-credentials</td>
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<td></td><td style="line-height: 130%">If true, use individual service account credentials for each controller.</td>
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<td colspan="2">--version version[=true]</td>
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<td></td><td style="line-height: 130%">Print version information and quit</td>
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