Help Center> Distributed Database Middleware> API Reference> APIs (Recommended)> DDM Instances> Changing the Node Class of a DDM Instance
Updated on 2022-12-21 GMT+08:00
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Changing the Node Class of a DDM Instance

Function

This API is used to change the node class of a DDM instance.

Constraints

  • The node class can be changed only when the corresponding DDM instance is normal.
  • The new node class cannot be the same as the original one.
  • Node classes of c6s series cannot be changed to those classes of c6 series.

URI

PUT /v3/{project_id}/instances/{instance_id}/flavor

Table 1 Path parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Project ID of a tenant in a region

instance_id

Yes

String

DDM instance ID

Request Parameters

Table 2 Request header parameters

Parameter

Mandatory

Type

Description

x-auth-token

Yes

String

User token

It can be obtained by calling an IAM API. The value of X-Subject-Token in the response header is the user token.
Table 3 Request body parameters

Parameter

Mandatory

Type

Description

spec_code

Yes

String

Resource specification code of the new node class

group_id

No

String

This parameter is not required if the instance has only one node group. Each instance has one node group by default. If you need to create multiple node groups, set this parameter to the ID of the group whose node class you want to change.

is_auto_pay

No

Boolean

Whether the order is automatically paid when you change the node class of a yearly/monthly instance. This parameter does not affect the billing mode of automatic renewal. true: indicates that the order is automatically paid from the account. false: indicates that the order is manually paid from the account. The default value is false.

Response Parameters

Status code: 200

Table 4 Response body parameters

Parameter

Type

Description

job_id

String

ID of the task of changing node class. This parameter is returned only when you change the node class of a pay-per-use instance.

order_id

String

Order ID. This parameter is returned only when you change the node class of a yearly/monthly instance.

Status code: default

Table 5 Response body parameters

Parameter

Type

Description

errCode

String

Error code

externalMessage

String

Error message

Example Request

PUT https://{endpoint}/v3/{project_id}/instances/{instance_id}/flavor

{
  "spec_code" : "ddm.c6.4xlarge.2",
  "group_id" : "3e5a9063d3b84729b0a3310fad3a0942gr09",
  "is_auto_pay" : false
}

Example Response

Status code: 200

ok

{
  "job_id" : "2x414788a5112333a02390e2eb0ea227"
}

Status Codes

Status Code

Description

200

ok

default

Client or server error.

Error Codes

For details, see Error Codes.

Parent topic: DDM Instances