Updated on 2025-08-06 GMT+08:00

Adding CN Nodes in Batches

Function

After a cluster is created, the number of required CN nodes varies with workloads. You can add or delete CN nodes as needed.

  • Other O&M operations cannot be performed during CN addition or deletion.

  • Services need to be stopped during CN node addition or deletion. You are advised to perform this operation during off-peak hours or when services are interrupted.

  • If a fault occurs during CN node addition or deletion and the rollback fails, you need to log in to the backend to rectify the fault. For details, see "Cluster Usage" > "Failed to Roll Back CN Addition or Deletion" in Troubleshooting.

Calling Method

For details, see Calling APIs.

URI

POST /v1.0/{project_id}/clusters/{cluster_id}/cns/batch-create

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Definition

Project ID. To obtain the value, see Obtaining a Project ID.

Constraints

N/A

Range

N/A

Default Value

N/A

cluster_id

Yes

String

Definition

Cluster ID. For details about how to obtain the value, see Obtaining the Cluster ID.

Constraints

N/A

Range

N/A

Default Value

N/A

Request Parameters

Table 2 Request body parameters

Parameter

Mandatory

Type

Description

num

Yes

Integer

Definition

Total number of CN nodes in the cluster after new CN nodes are added in batches. The number of CN nodes supported by a cluster depends on the cluster version and number of nodes. For details, see "Querying CN Nodes in a Cluster", where min_num indicates the minimum number of CN nodes, and max_num indicates the maximum number of CN nodes.

Constraints

N/A

Range

N/A

Default Value

N/A

Response Parameters

Status code: 200

Table 3 Response body parameters

Parameter

Type

Description

job_id

String

Definition

ID of the task for adding CN nodes in batches.

Range

N/A

Example Requests

Add three CN nodes in batches.

POST https://{Endpoint}/v1.0/89cd04f168b84af6be287f71730fdb4b/clusters/b5c45780-1006-49e3-b2d5-b3229975bbc7/cns/batch-create

{
  "num" : 3
}

Example Responses

Status code: 200

The CN nodes are successfully added in batches.

{
  "job_id" : "2c908185841339ce018414e9944b0020"
}

Status Codes

Status Code

Description

200

The CN nodes are successfully added in batches.

400

Request error.

401

Authentication failed.

403

You do not have required permissions.

404

No resources found.

500

Internal server error.

503

Service unavailable.