Function

This API is used to modify the read weight of a specified DB instance.

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

Constraints

• Only PostgreSQL 11 and PostgreSQL 12 are supported.
• The database proxy of DB instances has been enabled.

URI

• URI format

  PUT https://{Endpoint}/v3/{project_id}/instances/{instance_id}/proxy/weight

• Example

  https://rds.cn-north-1.myhuaweicloud.com/v3/0483b6b16e954cb88930a360d2c4e663/instances/cee5265e1e5845649e354841234567dfin01/proxy/weight

• 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
  master_weight	Yes	Integer	Specifies the weight distributed to the primary DB instance. It can be a value from 0 to 1000.
  readonly_instances	Yes	Array of objects	Specifies the read replica information. For details, see Table 3.

  Table 3 readonly_instances field data structure description

  Name	Mandatory	Type	Description
  id	Yes	String	Specifies the read replica ID.
  weight	Yes	Integer	Specifies the weight distributed to a read replica. It can be a value from 0 to 1000.

• Request example

  {
      "master_weight":0,
      "readonly_instances":[
          {
              "id":"83251d1398594b9fbfc8f1ab8b8228b2in03",
              "weight":100
          }
      ]
  }

Response

• Normal response

  Table 4 Parameter description

  Name	Type	Description
  result	String	Indicates the modified result of the read weight.

• Example normal response

  {
   "result":"success"
  }

• Abnormal response

  For details, see Abnormal Request Results.

Status Code

For details, see Status Codes.

Error Code

For details, see Error Codes.