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Node

Node is a worker node in Kubernetes.

apiVersion: v1

import "k8s.io/api/core/v1"

Node

Node is a worker node in Kubernetes. Each node will have a unique identifier in the cache (i.e. in etcd).

NodeSpec

NodeSpec describes the attributes that a node is created with.

  • configSource (NodeConfigSource)

    Deprecated. If specified, the source of the node's configuration. The DynamicKubeletConfig feature gate must be enabled for the Kubelet to use this field. This field is deprecated as of 1.22: https://git.k8s.io/enhancements/keps/sig-node/281-dynamic-kubelet-configuration

    NodeConfigSource specifies a source of node configuration. Exactly one subfield (excluding metadata) must be non-nil. This API is deprecated since 1.22

    • configSource.configMap (ConfigMapNodeConfigSource)

      ConfigMap is a reference to a Node's ConfigMap

      ConfigMapNodeConfigSource contains the information to reference a ConfigMap as a config source for the Node. This API is deprecated since 1.22: https://git.k8s.io/enhancements/keps/sig-node/281-dynamic-kubelet-configuration

      • configSource.configMap.kubeletConfigKey (string), required

        KubeletConfigKey declares which key of the referenced ConfigMap corresponds to the KubeletConfiguration structure This field is required in all cases.

      • configSource.configMap.name (string), required

        Name is the metadata.name of the referenced ConfigMap. This field is required in all cases.

      • configSource.configMap.namespace (string), required

        Namespace is the metadata.namespace of the referenced ConfigMap. This field is required in all cases.

      • configSource.configMap.resourceVersion (string)

        ResourceVersion is the metadata.ResourceVersion of the referenced ConfigMap. This field is forbidden in Node.Spec, and required in Node.Status.

      • configSource.configMap.uid (string)

        UID is the metadata.UID of the referenced ConfigMap. This field is forbidden in Node.Spec, and required in Node.Status.

  • externalID (string)

    Deprecated. Not all kubelets will set this field. Remove field after 1.13. see: https://issues.k8s.io/61966

  • podCIDR (string)

    PodCIDR represents the pod IP range assigned to the node.

  • podCIDRs ([]string)

    podCIDRs represents the IP ranges assigned to the node for usage by Pods on that node. If this field is specified, the 0th entry must match the podCIDR field. It may contain at most 1 value for each of IPv4 and IPv6.

  • providerID (string)

    ID of the node assigned by the cloud provider in the format: <ProviderName>://<ProviderSpecificNodeID>

  • taints ([]Taint)

    If specified, the node's taints.

    The node this Taint is attached to has the "effect" on any pod that does not tolerate the Taint.

    • taints.effect (string), required

      Required. The effect of the taint on pods that do not tolerate the taint. Valid effects are NoSchedule, PreferNoSchedule and NoExecute.

      Possible enum values:

      • "NoExecute" Evict any already-running pods that do not tolerate the taint. Currently enforced by NodeController.
      • "NoSchedule" Do not allow new pods to schedule onto the node unless they tolerate the taint, but allow all pods submitted to Kubelet without going through the scheduler to start, and allow all already-running pods to continue running. Enforced by the scheduler.
      • "PreferNoSchedule" Like TaintEffectNoSchedule, but the scheduler tries not to schedule new pods onto the node, rather than prohibiting new pods from scheduling onto the node entirely. Enforced by the scheduler.

    • taints.key (string), required

      Required. The taint key to be applied to a node.

    • taints.timeAdded (Time)

      TimeAdded represents the time at which the taint was added. It is only written for NoExecute taints.

      Time is a wrapper around time.Time which supports correct marshaling to YAML and JSON. Wrappers are provided for many of the factory methods that the time package offers.

    • taints.value (string)

      The taint value corresponding to the taint key.

  • unschedulable (boolean)

    Unschedulable controls node schedulability of new pods. By default, node is schedulable. More info: https://kubernetes.io/docs/concepts/nodes/node/#manual-node-administration

NodeStatus

NodeStatus is information about the current status of a node.

  • addresses ([]NodeAddress)

    Patch strategy: merge on key type

    List of addresses reachable to the node. Queried from cloud provider, if available. More info: https://kubernetes.io/docs/concepts/nodes/node/#addresses Note: This field is declared as mergeable, but the merge key is not sufficiently unique, which can cause data corruption when it is merged. Callers should instead use a full-replacement patch. See http://pr.k8s.io/79391 for an example.

    NodeAddress contains information for the node's address.

    • addresses.address (string), required

      The node address.

    • addresses.type (string), required

      Node address type, one of Hostname, ExternalIP or InternalIP.

      Possible enum values:

      • "ExternalDNS" identifies a DNS name which resolves to an IP address which has the characteristics of a NodeExternalIP. The IP it resolves to may or may not be a listed NodeExternalIP address.
      • "ExternalIP" identifies an IP address which is, in some way, intended to be more usable from outside the cluster then an internal IP, though no specific semantics are defined. It may be a globally routable IP, though it is not required to be. External IPs may be assigned directly to an interface on the node, like a NodeInternalIP, or alternatively, packets sent to the external IP may be NAT'ed to an internal node IP rather than being delivered directly (making the IP less efficient for node-to-node traffic than a NodeInternalIP).
      • "Hostname" identifies a name of the node. Although every node can be assumed to have a NodeAddress of this type, its exact syntax and semantics are not defined, and are not consistent between different clusters.
      • "InternalDNS" identifies a DNS name which resolves to an IP address which has the characteristics of a NodeInternalIP. The IP it resolves to may or may not be a listed NodeInternalIP address.
      • "InternalIP" identifies an IP address which is assigned to one of the node's network interfaces. Every node should have at least one address of this type. An internal IP is normally expected to be reachable from every other node, but may not be visible to hosts outside the cluster. By default it is assumed that kube-apiserver can reach node internal IPs, though it is possible to configure clusters where this is not the case. NodeInternalIP is the default type of node IP, and does not necessarily imply that the IP is ONLY reachable internally. If a node has multiple internal IPs, no specific semantics are assigned to the additional IPs.

  • allocatable (map[string]Quantity)

    Allocatable represents the resources of a node that are available for scheduling. Defaults to Capacity.

  • capacity (map[string]Quantity)

    Capacity represents the total resources of a node. More info: https://kubernetes.io/docs/concepts/storage/persistent-volumes#capacity

  • conditions ([]NodeCondition)

    Patch strategy: merge on key type

    Conditions is an array of current observed node conditions. More info: https://kubernetes.io/docs/concepts/nodes/node/#condition

    NodeCondition contains condition information for a node.

    • conditions.status (string), required

      Status of the condition, one of True, False, Unknown.

    • conditions.type (string), required

      Type of node condition.

      Possible enum values:

      • "DiskPressure" means the kubelet is under pressure due to insufficient available disk.
      • "MemoryPressure" means the kubelet is under pressure due to insufficient available memory.
      • "NetworkUnavailable" means that network for the node is not correctly configured.
      • "PIDPressure" means the kubelet is under pressure due to insufficient available PID.
      • "Ready" means kubelet is healthy and ready to accept pods.

    • conditions.lastHeartbeatTime (Time)

      Last time we got an update on a given condition.

      Time is a wrapper around time.Time which supports correct marshaling to YAML and JSON. Wrappers are provided for many of the factory methods that the time package offers.

    • conditions.lastTransitionTime (Time)

      Last time the condition transit from one status to another.

      Time is a wrapper around time.Time which supports correct marshaling to YAML and JSON. Wrappers are provided for many of the factory methods that the time package offers.

    • conditions.message (string)

      Human readable message indicating details about last transition.

    • conditions.reason (string)

      (brief) reason for the condition's last transition.

  • config (NodeConfigStatus)

    Status of the config assigned to the node via the dynamic Kubelet config feature.

    NodeConfigStatus describes the status of the config assigned by Node.Spec.ConfigSource.

    • config.active (NodeConfigSource)

      Active reports the checkpointed config the node is actively using. Active will represent either the current version of the Assigned config, or the current LastKnownGood config, depending on whether attempting to use the Assigned config results in an error.

      NodeConfigSource specifies a source of node configuration. Exactly one subfield (excluding metadata) must be non-nil. This API is deprecated since 1.22

      • config.active.configMap (ConfigMapNodeConfigSource)

        ConfigMap is a reference to a Node's ConfigMap

        ConfigMapNodeConfigSource contains the information to reference a ConfigMap as a config source for the Node. This API is deprecated since 1.22: https://git.k8s.io/enhancements/keps/sig-node/281-dynamic-kubelet-configuration

        • config.active.configMap.kubeletConfigKey (string), required

          KubeletConfigKey declares which key of the referenced ConfigMap corresponds to the KubeletConfiguration structure This field is required in all cases.

        • config.active.configMap.name (string), required

          Name is the metadata.name of the referenced ConfigMap. This field is required in all cases.

        • config.active.configMap.namespace (string), required

          Namespace is the metadata.namespace of the referenced ConfigMap. This field is required in all cases.

        • config.active.configMap.resourceVersion (string)

          ResourceVersion is the metadata.ResourceVersion of the referenced ConfigMap. This field is forbidden in Node.Spec, and required in Node.Status.

        • config.active.configMap.uid (string)

          UID is the metadata.UID of the referenced ConfigMap. This field is forbidden in Node.Spec, and required in Node.Status.

    • config.assigned (NodeConfigSource)

      Assigned reports the checkpointed config the node will try to use. When Node.Spec.ConfigSource is updated, the node checkpoints the associated config payload to local disk, along with a record indicating intended config. The node refers to this record to choose its config checkpoint, and reports this record in Assigned. Assigned only updates in the status after the record has been checkpointed to disk. When the Kubelet is restarted, it tries to make the Assigned config the Active config by loading and validating the checkpointed payload identified by Assigned.

      NodeConfigSource specifies a source of node configuration. Exactly one subfield (excluding metadata) must be non-nil. This API is deprecated since 1.22

      • config.assigned.configMap (ConfigMapNodeConfigSource)

        ConfigMap is a reference to a Node's ConfigMap

        ConfigMapNodeConfigSource contains the information to reference a ConfigMap as a config source for the Node. This API is deprecated since 1.22: https://git.k8s.io/enhancements/keps/sig-node/281-dynamic-kubelet-configuration

        • config.assigned.configMap.kubeletConfigKey (string), required

          KubeletConfigKey declares which key of the referenced ConfigMap corresponds to the KubeletConfiguration structure This field is required in all cases.

        • config.assigned.configMap.name (string), required

          Name is the metadata.name of the referenced ConfigMap. This field is required in all cases.

        • config.assigned.configMap.namespace (string), required

          Namespace is the metadata.namespace of the referenced ConfigMap. This field is required in all cases.

        • config.assigned.configMap.resourceVersion (string)

          ResourceVersion is the metadata.ResourceVersion of the referenced ConfigMap. This field is forbidden in Node.Spec, and required in Node.Status.

        • config.assigned.configMap.uid (string)

          UID is the metadata.UID of the referenced ConfigMap. This field is forbidden in Node.Spec, and required in Node.Status.

    • config.error (string)

      Error describes any problems reconciling the Spec.ConfigSource to the Active config. Errors may occur, for example, attempting to checkpoint Spec.ConfigSource to the local Assigned record, attempting to checkpoint the payload associated with Spec.ConfigSource, attempting to load or validate the Assigned config, etc. Errors may occur at different points while syncing config. Earlier errors (e.g. download or checkpointing errors) will not result in a rollback to LastKnownGood, and may resolve across Kubelet retries. Later errors (e.g. loading or validating a checkpointed config) will result in a rollback to LastKnownGood. In the latter case, it is usually possible to resolve the error by fixing the config assigned in Spec.ConfigSource. You can find additional information for debugging by searching the error message in the Kubelet log. Error is a human-readable description of the error state; machines can check whether or not Error is empty, but should not rely on the stability of the Error text across Kubelet versions.

    • config.lastKnownGood (NodeConfigSource)

      LastKnownGood reports the checkpointed config the node will fall back to when it encounters an error attempting to use the Assigned config. The Assigned config becomes the LastKnownGood config when the node determines that the Assigned config is stable and correct. This is currently implemented as a 10-minute soak period starting when the local record of Assigned config is updated. If the Assigned config is Active at the end of this period, it becomes the LastKnownGood. Note that if Spec.ConfigSource is reset to nil (use local defaults), the LastKnownGood is also immediately reset to nil, because the local default config is always assumed good. You should not make assumptions about the node's method of determining config stability and correctness, as this may change or become configurable in the future.

      NodeConfigSource specifies a source of node configuration. Exactly one subfield (excluding metadata) must be non-nil. This API is deprecated since 1.22

      • config.lastKnownGood.configMap (ConfigMapNodeConfigSource)

        ConfigMap is a reference to a Node's ConfigMap

        ConfigMapNodeConfigSource contains the information to reference a ConfigMap as a config source for the Node. This API is deprecated since 1.22: https://git.k8s.io/enhancements/keps/sig-node/281-dynamic-kubelet-configuration

        • config.lastKnownGood.configMap.kubeletConfigKey (string), required

          KubeletConfigKey declares which key of the referenced ConfigMap corresponds to the KubeletConfiguration structure This field is required in all cases.

        • config.lastKnownGood.configMap.name (string), required

          Name is the metadata.name of the referenced ConfigMap. This field is required in all cases.

        • config.lastKnownGood.configMap.namespace (string), required

          Namespace is the metadata.namespace of the referenced ConfigMap. This field is required in all cases.

        • config.lastKnownGood.configMap.resourceVersion (string)

          ResourceVersion is the metadata.ResourceVersion of the referenced ConfigMap. This field is forbidden in Node.Spec, and required in Node.Status.

        • config.lastKnownGood.configMap.uid (string)

          UID is the metadata.UID of the referenced ConfigMap. This field is forbidden in Node.Spec, and required in Node.Status.

  • daemonEndpoints (NodeDaemonEndpoints)

    Endpoints of daemons running on the Node.

    NodeDaemonEndpoints lists ports opened by daemons running on the Node.

    • daemonEndpoints.kubeletEndpoint (DaemonEndpoint)

      Endpoint on which Kubelet is listening.

      DaemonEndpoint contains information about a single Daemon endpoint.

      • daemonEndpoints.kubeletEndpoint.Port (int32), required

        Port number of the given endpoint.

  • images ([]ContainerImage)

    List of container images on this node

    Describe a container image

    • images.names ([]string)

      Names by which this image is known. e.g. ["k8s.gcr.io/hyperkube:v1.0.7", "dockerhub.io/google_containers/hyperkube:v1.0.7"]

    • images.sizeBytes (int64)

      The size of the image in bytes.

  • nodeInfo (NodeSystemInfo)

    Set of ids/uuids to uniquely identify the node. More info: https://kubernetes.io/docs/concepts/nodes/node/#info

    NodeSystemInfo is a set of ids/uuids to uniquely identify the node.

    • nodeInfo.architecture (string), required

      The Architecture reported by the node

    • nodeInfo.bootID (string), required

      Boot ID reported by the node.

    • nodeInfo.containerRuntimeVersion (string), required

      ContainerRuntime Version reported by the node through runtime remote API (e.g. docker://1.5.0).

    • nodeInfo.kernelVersion (string), required

      Kernel Version reported by the node from 'uname -r' (e.g. 3.16.0-0.bpo.4-amd64).

    • nodeInfo.kubeProxyVersion (string), required

      KubeProxy Version reported by the node.

    • nodeInfo.kubeletVersion (string), required

      Kubelet Version reported by the node.

    • nodeInfo.machineID (string), required

      MachineID reported by the node. For unique machine identification in the cluster this field is preferred. Learn more from man(5) machine-id: http://man7.org/linux/man-pages/man5/machine-id.5.html

    • nodeInfo.operatingSystem (string), required

      The Operating System reported by the node

    • nodeInfo.osImage (string), required

      OS Image reported by the node from /etc/os-release (e.g. Debian GNU/Linux 7 (wheezy)).

    • nodeInfo.systemUUID (string), required

      SystemUUID reported by the node. For unique machine identification MachineID is preferred. This field is specific to Red Hat hosts https://access.redhat.com/documentation/en-us/red_hat_subscription_management/1/html/rhsm/uuid

  • phase (string)

    NodePhase is the recently observed lifecycle phase of the node. More info: https://kubernetes.io/docs/concepts/nodes/node/#phase The field is never populated, and now is deprecated.

    Possible enum values:

    • "Pending" means the node has been created/added by the system, but not configured.
    • "Running" means the node has been configured and has Kubernetes components running.
    • "Terminated" means the node has been removed from the cluster.

  • volumesAttached ([]AttachedVolume)

    List of volumes that are attached to the node.

    AttachedVolume describes a volume attached to a node

    • volumesAttached.devicePath (string), required

      DevicePath represents the device path where the volume should be available

    • volumesAttached.name (string), required

      Name of the attached volume

  • volumesInUse ([]string)

    List of attachable volumes in use (mounted) by the node.

NodeList

NodeList is the whole list of all Nodes which have been registered with master.

Operations

get read the specified Node

HTTP Request

GET /api/v1/nodes/{name}

Parameters

  • name (in path): string, required

    name of the Node

  • pretty (in query): string

    pretty

Response

200 (Node): OK

401: Unauthorized

get read status of the specified Node

HTTP Request

GET /api/v1/nodes/{name}/status

Parameters

  • name (in path): string, required

    name of the Node

  • pretty (in query): string

    pretty

Response

200 (Node): OK

401: Unauthorized

list list or watch objects of kind Node

HTTP Request

GET /api/v1/nodes

Parameters

Response

200 (NodeList): OK

401: Unauthorized

create create a Node

HTTP Request

POST /api/v1/nodes

Parameters

Response

200 (Node): OK

201 (Node): Created

202 (Node): Accepted

401: Unauthorized

update replace the specified Node

HTTP Request

PUT /api/v1/nodes/{name}

Parameters

  • name (in path): string, required

    name of the Node

  • body: Node, required

  • dryRun (in query): string

    dryRun

  • fieldManager (in query): string

    fieldManager

  • fieldValidation (in query): string

    fieldValidation

  • pretty (in query): string

    pretty

Response

200 (Node): OK

201 (Node): Created

401: Unauthorized

update replace status of the specified Node

HTTP Request

PUT /api/v1/nodes/{name}/status

Parameters

  • name (in path): string, required

    name of the Node

  • body: Node, required

  • dryRun (in query): string

    dryRun

  • fieldManager (in query): string

    fieldManager

  • fieldValidation (in query): string

    fieldValidation

  • pretty (in query): string

    pretty

Response

200 (Node): OK

201 (Node): Created

401: Unauthorized

patch partially update the specified Node

HTTP Request

PATCH /api/v1/nodes/{name}

Parameters

  • name (in path): string, required

    name of the Node

  • body: Patch, required

  • dryRun (in query): string

    dryRun

  • fieldManager (in query): string

    fieldManager

  • fieldValidation (in query): string

    fieldValidation

  • force (in query): boolean

    force

  • pretty (in query): string

    pretty

Response

200 (Node): OK

201 (Node): Created

401: Unauthorized

patch partially update status of the specified Node

HTTP Request

PATCH /api/v1/nodes/{name}/status

Parameters

  • name (in path): string, required

    name of the Node

  • body: Patch, required

  • dryRun (in query): string

    dryRun

  • fieldManager (in query): string

    fieldManager

  • fieldValidation (in query): string

    fieldValidation

  • force (in query): boolean

    force

  • pretty (in query): string

    pretty

Response

200 (Node): OK

201 (Node): Created

401: Unauthorized

delete delete a Node

HTTP Request

DELETE /api/v1/nodes/{name}

Parameters

Response

200 (Status): OK

202 (Status): Accepted

401: Unauthorized

deletecollection delete collection of Node

HTTP Request

DELETE /api/v1/nodes

Parameters

Response

200 (Status): OK

401: Unauthorized

Last modified December 08, 2021 at 9:34 AM PST: Reference docs for kubernetes 1.23 (02445930e5)