Help Center/ ModelArts/ API Reference/ Node Pool Management/ Updating a Node Pool

Updated on 2025-08-20 GMT+08:00

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Updating a Node Pool

Function

This API is used to update a node pool.

Debugging

You can debug this API through automatic authentication in API Explorer or use the SDK sample code generated by API Explorer.

URI

PATCH /v2/{project_id}/pools/{pool_name}/nodepools/{nodepool_name}

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details, see Obtaining a Project ID and Name.
pool_name	Yes	String	Resource pool name.
nodepool_name	Yes	String	Node pool name.

Request Parameters

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
Content-Type	Yes	String	application/merge-patch+json.

**Table 3** Request body parameters
Parameter	Mandatory	Type	Description
spec	Yes	NodePoolSpec object	Request body for updating a node pool.

**Table 4** NodePoolSpec
Parameter	Mandatory	Type	Description
resources	Yes	PoolResource object	List of resources in a node pool, including resource flavors, quantity, and custom configurations.

**Table 5** PoolResource
Parameter	Mandatory	Type	Description
flavor	Yes	String	Resource flavor name, for example, modelarts.vm.gpu.t4u8.
count	Yes	Integer	Minimum count for the flavors in a pool.
maxCount	Yes	Integer	Elastic usage of the resource flavor. This parameter value is the same as the count value in a physical pool.
azs	No	Array of PoolNodeAz objects	AZ where resource pool nodes are deployed.
nodePool	No	String	Node pool name, for example, nodePool-1.
taints	No	Array of Taint objects	Taints to be added to nodes to set anti-affinity. This parameter cannot be specified for a non-privileged pool.
labels	No	Map<String,String>	Kubernetes label, in the format of a key-value pair.
tags	No	Array of UserTag objects	Resource tag. This parameter cannot be specified for a non-privileged pool.
network	No	NodeNetwork object	Network configuration. This parameter cannot be specified for a non-privileged pool.
extendParams	No	Map<String,String>	Customize the parameter configurations. dockerBaseSize: Specify the container engine space size of a resource pool node. The value 0 indicates that the size is not limited.
creatingStep	No	CreatingStep object	Batch creation information.
os	No	Os object	OS image information.

**Table 6** PoolNodeAz
Parameter	Mandatory	Type	Description
az	Yes	String	Definition: AZ name. Constraints: N/A Range: N/A Default Value: N/A
count	Yes	Integer	Definition: Number of AZ resource instances. Constraints: N/A Range: N/A Default Value: N/A

**Table 7** Taint
Parameter	Mandatory	Type	Description
key	Yes	String	Key.
value	No	String	Value.
effect	Yes	String	Effect.

**Table 8** UserTag
Parameter	Mandatory	Type	Description
key	Yes	String	Key. The value cannot start with CCE- or __type_baremetal.
value	Yes	String	Value.

**Table 9** NodeNetwork
Parameter	Mandatory	Type	Description
vpc	No	String	VPC ID.
subnet	No	String	Subnet ID.
securityGroups	No	Array of strings	Security group IDs.

**Table 10** CreatingStep
Parameter	Mandatory	Type	Description
step	No	Integer	Creation step.
type	No	String	Batch creation type. The options are as follows: rack: entire cabinet

**Table 11** Os
Parameter	Mandatory	Type	Description
name	No	String	Definition: OS name. Constraints: N/A Range: N/A Default Value: N/A
imageId	No	String	Definition: OS image ID. Constraints: N/A Range: N/A Default Value: N/A
imageType	No	String	Definition: OS image type. Constraints: N/A Range: private: private image Default Value: N/A

Response Parameters

Status code: 200

**Table 12** Response body parameters
Parameter	Type	Description
spec	NodePoolSpec object	Request body for updating a node pool.

**Table 13** NodePoolSpec
Parameter	Type	Description
resources	PoolResource object	List of resources in a node pool, including resource flavors, quantity, and custom configurations.

**Table 14** PoolResource
Parameter	Type	Description
flavor	String	Resource flavor name, for example, modelarts.vm.gpu.t4u8.
count	Integer	Minimum count for the flavors in a pool.
maxCount	Integer	Elastic usage of the resource flavor. This parameter value is the same as the count value in a physical pool.
azs	Array of PoolNodeAz objects	AZ where resource pool nodes are deployed.
nodePool	String	Node pool name, for example, nodePool-1.
taints	Array of Taint objects	Taints to be added to nodes to set anti-affinity. This parameter cannot be specified for a non-privileged pool.
labels	Map<String,String>	Kubernetes label, in the format of a key-value pair.
tags	Array of UserTag objects	Resource tag. This parameter cannot be specified for a non-privileged pool.
network	NodeNetwork object	Network configuration. This parameter cannot be specified for a non-privileged pool.
extendParams	Map<String,String>	Customize the parameter configurations. dockerBaseSize: Specify the container engine space size of a resource pool node. The value 0 indicates that the size is not limited.
creatingStep	CreatingStep object	Batch creation information.
os	Os object	OS image information.

**Table 15** PoolNodeAz
Parameter	Type	Description
az	String	Definition: AZ name. Constraints: N/A Range: N/A Default Value: N/A
count	Integer	Definition: Number of AZ resource instances. Constraints: N/A Range: N/A Default Value: N/A

**Table 16** Taint
Parameter	Type	Description
key	String	Key.
value	String	Value.
effect	String	Effect.

**Table 17** UserTag
Parameter	Type	Description
key	String	Key. The value cannot start with CCE- or __type_baremetal.
value	String	Value.

**Table 18** NodeNetwork
Parameter	Type	Description
vpc	String	VPC ID.
subnet	String	Subnet ID.
securityGroups	Array of strings	Security group IDs.

**Table 19** CreatingStep
Parameter	Type	Description
step	Integer	Creation step.
type	String	Batch creation type. The options are as follows: rack: entire cabinet

**Table 20** Os
Parameter	Type	Description
name	String	Definition: OS name. Constraints: N/A Range: N/A Default Value: N/A
imageId	String	Definition: OS image ID. Constraints: N/A Range: N/A Default Value: N/A
imageType	String	Definition: OS image type. Constraints: N/A Range: private: private image Default Value: N/A

Status code: 400

**Table 21** Response body parameters
Parameter	Type	Description
error_code	String	Definition: ModelArts error code. Range: N/A
error_msg	String	Definition: Error message. Range: N/A

Example Requests

Update a node pool.

PATCH https://{endpoint}/v2/{project_id}/pools/{pool_name}/nodepools/{nodepool_name}

{
  "spec" : {
    "resources" : {
      "nodePool" : "modelarts.vm.2u4g.dcc-Default",
      "flavor" : "modelarts.vm.2u4g.dcc",
      "count" : 1,
      "maxCount" : 1,
      "network" : {
        "vpc" : "277e9abc-0e6b-431a-9232-cfd25d5fc566",
        "subnet" : "03796378-c356-4c14-826b-e4913aa9c8b9",
        "securityGroups" : [ "0a15b48d-06f1-41e4-b782-ade90087bf59" ]
      }
    }
  }
}

Example Responses

Status code: 200

OK.

{
  "spec" : {
    "resources" : {
      "nodePool" : "modelarts.vm.2u4g.dcc-Default",
      "flavor" : "modelarts.vm.2u4g.dcc",
      "count" : 1,
      "maxCount" : 1,
      "network" : {
        "vpc" : "277e9abc-0e6b-431a-9232-cfd25d5fc566",
        "subnet" : "03796378-c356-4c14-826b-e4913aa9c8b9",
        "securityGroups" : [ "0a15b48d-06f1-41e4-b782-ade90087bf59" ]
      }
    }
  }
}

Status code: 400

Bad request

{
  "error_code" : "ModelArts.50004000",
  "error_msg" : "Bad request."
}

Status Codes

Status Code	Description
200	OK.
400	Bad request

Error Codes

See Error Codes.

Parent topic: Node Pool Management

Previous topic: Obtaining Details About a Specified Node Pool

Next topic: Deleting a Node Pool

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