doc-exports/docs/rds/api-ref/rds_01_0101.html

Changing DB Instance Specifications

Function

This API is used to change DB instance specifications.

• Before calling an API, you need to understand the API in Authentication.
• Before calling this API, obtain the required region and endpoint.

Services will be interrupted for 5 to 10 minutes when you change DB instance specifications. Exercise caution when performing this operation.

Constraints

• The new DB instance specifications must be different from the original DB instance specifications.
• The instance class can be modified only for DB instances whose status is Available.
• The specifications of a DB instance can be changed only to the specifications of the same DB instance type. (For example, the specifications of a single DB instance cannot be changed to those of primary/standby DB instances.)

URI

• URI format

  POST https://{Endpoint}/v3/{project_id}/instances/{instance_id}/action

• Parameter description

  Table 1 Parameter description

  Name	Mandatory	Description
  project_id	Yes	Specifies the project ID of a tenant in a region. For details about how to obtain the project ID, see Obtaining a Project ID.
  instance_id	Yes	Specifies the DB instance ID.

Request

• Parameter description

  Table 2 Parameter description

  Name	Mandatory	Type	Description
  resize_flavor	Yes	Object	For details, see Table 3.

  Table 3 resize_flavor field data structure description

  Name	Mandatory	Type	Description
  spec_code	Yes	String	Specifies the resource specification code. Use rds.mysql.n1.xlarge as an example. rds indicates RDS, mysql indicates the DB engine, and n1.xlarge indicates the performance specification (large-memory). The parameter containing rr indicates the read replica specifications. The parameter not containing rr indicates the single or primary/standby DB instance specifications.

• Example

  POST https://rds.eu-de.otc.t-systems.com/v3/0483b6b16e954cb88930a360d2c4e663/instances/dsfae23fsfdsae3435in01/action

• Request example

  {
  	"resize_flavor": {
  		"spec_code": "rds.pg.c2.medium"
  	}
  }

Response

• Normal response

  Table 4 Parameter description

  Name	Type	Description
  job_id	String	Indicates the task ID.

• Example normal response

  {
  	"job_id": "2b414788a6004883a02390e2eb0ea227"
  }

• Abnormal Response

  For details, see Abnormal Request Results.

Status Code

• Normal

  202

• Abnormal

  For details, see Status Codes.

Error Code

For details, see Error Codes.

Parent topic: DB Instance Management