Updated on 2024-03-28 GMT+08:00

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.

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 specifications can be modified only for DB instances in the Available status.
  • 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 /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.m1.xlarge as an example. rds indicates the RDS product, mysql indicates the DB engine, and m1.xlarge indicates the high memory performance specifications. The parameter containing rr indicates the read replica specifications. The parameter not containing rr indicates the single or primary/standby DB instance specifications.

Example Request

  • Changing the specifications of an RDS for MySQL DB instance to rds.mysql.m1.xlarge
    {
    	"resize_flavor": {
    		"spec_code": "rds.mysql.m1.xlarge"
    	}
    }
  • Changing the specifications of an RDS for PostgreSQL DB instance to rds.pg.c2.medium.ha
    {
    	"resize_flavor": {
    		"spec_code": "rds.pg.c2.medium.ha"
    	}
    }

Response

  • Normal response
    Table 4 Parameter description

    Name

    Type

    Description

    job_id

    String

    Indicates the job ID.

  • Example normal response
    {
    	"job_id": "2b414788a6004883a02390e2eb0ea227"
    }
  • Abnormal response

    For details, see Abnormal Request Results.

Status Code

Error Code

For details, see Error Codes.