Reading a Specified Node¶

Function¶

This API is used to obtain details about a node with a specified node ID.

URI¶

GET /api/v3/projects/{project_id}/clusters/{cluster_id}/nodes/{node_id}

Table 1 describes the parameters of the API.

**Table 1** Parameter description¶
Parameter	Mandatory	Description
project_id	Yes	Project ID. For details about how to obtain the project ID, see How to Obtain Parameters in the API URI.
cluster_id	Yes	Cluster ID. For details about how to obtain the cluster ID, see How to Obtain Parameters in the API URI.
node_id	Yes	Cluster ID. For details about how to obtain the cluster ID, see How to Obtain Parameters in the API URI.

**Table 2** Query parameters¶
Parameter	Mandatory	Type	Description
errorStatus	No	String	This field allows a cluster to be in the Error state if exceptions occur when the cluster is being deleted. If the value of errorStatus is null, the cluster stays in the Deleting state, but not Error. Minimum: 0 Maximum: 10

Request¶

Request parameters:

Table 3 describes the request parameters.

**Table 3** Parameters in the request header¶
Parameter	Mandatory	Description
Content-Type	Yes	Message body type (format). Possible values: application/json;charset=utf-8 application/json
X-Auth-Token	Yes	Requests for calling an API can be authenticated using either a token or AK/SK. If token-based authentication is used, this parameter is mandatory and must be set to a user token. For details on how to obtain a user token, see API Usage Guidelines.

Example request:

N/A

Response¶

Response parameters:

Table 4 describes the response parameters.

**Table 4** Response parameters¶
Parameter	Type	Description
kind	String	API type. The value is fixed at Node and cannot be changed.
apiVersion	String	API version. The value is fixed at v3 and cannot be changed.
metadata	metadata object	Node's metadata, which is a collection of attributes.
spec	spec object	Detailed description of the node targeted by this API. CCE creates or updates objects by defining or updating its spec.
status	status object	Node status and jobID of the node creation job.

**Table 5** Data structure of the **metadata** field¶
Parameter	Type	Description
name	String	Node name. Note Enter 1 to 56 characters, starting with a lowercase letter and not ending with a hyphen (-). Only lowercase letters, digits, and hyphens (-) are allowed. Minimum: 1 Maximum: 56
uid	String	Node ID, which is unique and automatically generated after the resource is created. A user-defined ID will not take effect.
labels	Map<String,String>	CCE node label (not the native Kubernetes label). Labels are used to select objects that meet certain criteria. A label is a key-value pair. Example: "labels": { "key" : "value" }
creationTimestamp	String	Time when the object was created. The value is automatically generated after the object is created. A user-defined value will not take effect.
updateTimestamp	String	Time when the object was updated. The value is automatically generated after the object is created. A user-defined value will not take effect.
annotations	annotations object	Node annotation. Format: Key-value pair.

**Table 6** Data structure of the **annotations** field¶
Parameter	Type	Description
kubernetes.io/node-pool.id	String	If a node is created from a node pool, the value is the ID of the node pool. If the node is not created from a node pool, the value is in the following format: Name of the AZ where the node is located#Node flavor#Node OS name

**Table 7** Data structure of the **spec** field¶
Parameter	Type	Description
flavor	String	Node specifications. For details, see the description of the flavorRef parameter in Creating an ECS.
az	String	AZ of the node. For details, see the description of the availability_zone parameter in Creating an ECS.
os	String	Node OS. Nodes in clusters of Kubernetes v1.11 or earlier support EulerOS 2.2. Nodes in clusters of Kubernetes v1.13 or v1.15 support EulerOS 2.5. Nodes in clusters of Kubernetes v1.17 support EulerOS 2.5 and CentOS 7.7. Nodes in clusters of Kubernetes v1.19, v1.21 or v1.23 support EulerOS 2.5, EulerOS 2.9 and CentOS 7.7. Nodes using kata runtime in CCE Turbo cluster support EulerOS 2.9.
login	login object	Node login mode, which can only be key pair.
rootVolume	Volume object	System disk parameters of the node.
dataVolumes	Array of Volume object	Data disk parameters of the node.
storage	Storage object	Disk initialization management parameter. This parameter is complex to configure. For details, see Attaching Disks to a Node. If this parameter retains its default, disks are managed based on the DockerLVMConfigOverride (discarded) parameter in extendParam. This parameter is supported by clusters of version 1.15.11 and later. Note If a node specification involves local disks and EVS disks at the same time, do not retain the default value of this parameter to prevent unexpected disk partitions.
publicIP	publicIP object	EIP parameters of a node.
nodeNicSpec	nodeNicSpec object	Description about the node NIC.
count	Integer	Number of nodes to be created in a batch. The value must be a positive integer greater than or equal to 1. Note This parameter can be set to 0 for a node pool.
billingMode	Integer	Billing mode of a node. Note This field is not supported for the current version.
ecsGroupId	String	ECS group ID. If this parameter is specified, the node is created in the specified ECS group. Note This parameter is not supported when you add a node to a node pool or use CCE Turbo cluster.
dedicatedHostId	String	ID of the DeH host. If this parameter is specified, the node is scheduled to its own DeH host. Note This parameter is not supported when you add a node to a node pool.
offloadNode	Boolean	Whether the node belongs to a CCE Turbo cluster. Note This parameter is not supported when you add a node to a node pool.
faultDomain	String	Cloud server fault domain. The node is created in the fault domain specified by this parameter. Note You must specify the ECS to which the fault domain policy applies and enable the fault domain feature.
runtime	Runtime object	Container runtime. The default value is docker.
extendParam	extendParam object	Extended parameter. Format: Key-value pair.

**Table 8** Data structure of the nodeNicSpec field¶
Parameter	Type	Description
primaryNic	primaryNic object	Description about the primary NIC.
extNics	Array of extNics objects	Extension NIC.

**Table 9** Data structure of the primaryNic/extNics field¶
Parameter	Type	Description
subnetId	String	Network ID of the subnet to which the NIC belongs.
fixedIps	Array of strings	The IP address of the primary NIC is specified by fixedIps. The number of IP addresses cannot be greater than the number of created nodes. fixedIps and ipBlock cannot be specified at the same time.
ipBlock	String	CIDR format of the IP address segment. The IP address of the created node falls in this IP address segment. fixedIps and ipBlock cannot be specified at the same time.

**Table 10** Runtime¶
Parameter	Type	Description
name	String	Container runtime. The default value is docker. Enumeration values: docker containerd

**Table 11** Data structure of the **extendParam** field¶
Parameter	Type	Description
chargingMode	Integer	Billing mode of a node. Note This field is not supported for the current version.
ecs:performancetype	String	Type of the ECS specifications.
orderID	String	Order ID. Note This field is not supported for the current version.
productID	String	Product ID. Note This field is not supported for the current version.
maxPods	Integer	Maximum number of pods on the node.
dockerBaseSize	Integer	Available disk space of a single Docker container on the node using the device mapper.
periodType	String	Purchase duration type. Note This field is not supported for the current version.
periodNum	Integer	Purchase duration. Note This field is not supported for the current version.
isAutoRenew	String	Whether auto renewal is enabled. true: Indicates that auto renewal is enabled. false: Indicates that auto renewal is disabled. Note This field is not supported for the current version.
DockerLVMConfigOverride	String	Docker data disk configuration item. (This parameter has been discarded. Use the storage field instead.) The following is the default configuration: "DockerLVMConfigOverride":"dockerThinpool=vgpaas/90%VG;kubernetesLV=vgpaas/10%VG;diskType=evs;lvType=linear" The configuration contains the following fields: userLV: size of the user space, for example: vgpaas/20%VG. userPath: mount path of the user space, for example: /home/wqt-test. diskType: disk type. Currently, only the evs, hdd, and ssd are supported. lvType: type of a logic volume. Currently, the value can be linear or striped. dockerThinpool: Docker disk space, for example: vgpaas/60%VG. kubernetesLV: kubelet size, for example: vgpaas/20%VG.

**Table 12** Data structure of the **status** field¶
Parameter	Type	Description
phase	String	Node status. Build: The VM that hosts the node is being created. Active: The node is ready for use. Abnormal: The node is unready for use. Deleting: The node is being deleted. Installing: The node is being installed. Upgrading: The node is being upgraded.
serverId	String	ID of the ECS where the node resides.
publicIP	String	EIP used by the node to access public networks.
privateIP	String	Private IP address used by the node to communicate with other nodes in the same VPC as the current cluster.

**Table 13** Storage¶
Parameter	Type	Description
storageSelectors	Array of StorageSelectors objects	Disk selection. Matched disks are managed according to matchLabels and storageType.
storageGroups	Array of StorageGroups objects	A storage group consists of multiple storage devices. It is used to divide storage space.

**Table 14** StorageSelectors¶
Parameter	Type	Description
name	String	Selector name, used as the index of selectorNames in storageGroup. Therefore, the name of each selector must be unique.
storageType	String	Specifies the storage type. Currently, only evs (EVS volumes) and local (local volumes) are supported. The local storage does not support disk selection. All local disks will form a VG. Therefore, only one storageSelector of the local type is allowed.
matchLabels	matchLabels object	Matching field of an EVS volume. The size, volumeType, metadataEncrypted, metadataCmkid and count fields are supported.

**Table 15** matchLabels¶
Parameter	Type	Description
size	String	Matched disk size. If this parameter is left unspecified, the disk size is not limited. Example: 100
volumeType	String	EVS disk type. Currently, SSD, GPSSD and SAS are supported.
metadataEncrypted	String	Disk encryption identifier. 0 indicates that the disk is not encrypted, and 1 indicates that the disk is encrypted.
metadataCmkid	String	Customer master key ID of an encrypted disk. The value is a 36-byte string.
count	String	Number of disks to be selected. If this parameter is left blank, all disks of this type are selected.

**Table 16** StorageGroups¶
Parameter	Type	Description
name	String	Name of a virtual storage group, which must be unique.
cceManaged	Boolean	Storage space for Kubernetes and runtime components. Only one group can be set to true. If this parameter is left blank, the default value false is used.
selectorNames	Array of strings	This parameter corresponds to name in storageSelectors. A group can match multiple selectors, but a selector can match only one group.
virtualSpaces	Array of VirtualSpace objects	Detailed management of space configuration in a group.

**Table 17** VirtualSpace¶
Parameter	Type	Description
name	String	Name of a virtualSpace. Kubernetes: Kubernetes space configuration. lvmConfig needs to be configured. runtime: runtime space configuration. runtimeConfig needs to be configured. user: user space configuration. lvmConfig needs to be configured.
size	String	Size of a virtualSpace. The value must be an integer in percentage. Example: 90%. Note The sum of the percentages of all virtualSpaces in a group cannot exceed 100%.
lvmConfig	LVMConfig object	LVM configurations, applicable to kubernetes and user spaces. Note that one virtual space supports only one config.
runtimeConfig	RuntimeConfig object	runtime configurations, applicable to the runtime space. Note that one virtual space supports only one config.

**Table 18** LVMConfig¶
Parameter	Type	Description
lvType	String	LVM write mode. linear indicates the linear mode. striped indicates the striped mode, in which multiple disks are used to form a strip to improve disk performance.
path	String	Path to which the disk is attached. This parameter takes effect only in user configuration. The value is an absolute path. Digits, letters, periods (.), hyphens (-), and underscores (_) are allowed.

**Table 19** RuntimeConfig¶
Parameter	Type	Description
lvType	String	LVM write mode. linear indicates the linear mode. striped indicates the striped mode, in which multiple disks are used to form a strip to improve disk performance.

Example response:

{
  "kind": "Node",
  "apiVersion": "v3",
  "metadata": {
    "name": "myhost",
    "uid": "4d1ecb2c-229a-11e8-9c75-0255ac100ceb",
    "creationTimestamp": "2020-02-02 08:12:40.124294439 +0000 UTC",
    "updateTimestamp": "2020-02-02 08:18:20.221871842 +0000 UTC",
    "annotations": {
      "kubernetes.io/node-pool.id": "eu-de-01#s1.medium#EulerOS 2.5"
    }
  },
  "spec": {
    "flavor": "s1.medium",
    "az": "eu-de-01",
    "os": "EulerOS 2.5",
    "login": {
      "sshKey": "Keypair-demo"
    },
    "rootVolume": {
      "volumetype": "SAS",
      "size": 40
    },
    "dataVolumes": [
      {
        "volumetype": "SAS",
        "size": 100
      }
    ],
    "storage": {
        "storageSelectors": [
            {
                "name": "cceUse",
                "storageType": "evs",
                "matchLabels": {
                    "size": "100",
                    "volumeType": "SAS",
                    "count": "1"
                }
            }
        ],
        "storageGroups": [
            {
                "name": "vgpaas",
                "selectorNames": [
                    "cceUse"
                ],
                "cceManaged": true,
                "virtualSpaces": [
                    {
                        "name": "runtime",
                        "size": "90%"
                    },
                    {
                        "name": "kubernetes",
                        "size": "10%"
                    }
                ]
            }
        ]
    },
    "publicIP": {
      "eip": {
        "bandwidth": {}
      }
    }
  },
  "status": {
    "phase": "Active",
    "serverId": "456789abc-9368-46f3-8f29-d1a95622a568",
    "publicIP": "10.34.56.78",
    "privateIP": "192.168.1.23"
  }
}

Status Code¶

Table 20 describes the status code of this API.

**Table 20** Status code¶
Status Code	Description
200	Information about the node in the specified cluster is successfully obtained.

For details about error status codes, see Status Code.

last updated: 2024-04-27 02:17