doc-exports/docs/rds/api-ref/rds_05_0014.html

Changing the Data Synchronize Model of Primary/Standby DB Instances

Function

This API is used to change the data synchronize model of primary/standby DB instances based on service requirements.

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

Constraints

• This API is supported for MySQL and PostgreSQL.
• This API is supported for primary/standby DB instances only.
• The synchronize model cannot be changed if the DB instance is in any of the following statuses: creating, upgrading, changing instance class, creating users, or deleting users.

URI

• URI format

  PUT https://{Endpoint}/v3/{project_id}/instances/{instance_id}/failover/mode

• 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
  mode	Yes	String	Specifies the synchronize model. For MySQL, the value can be any of the following: async: asynchronous semisync: semi-synchronous For PostgreSQL, the value can be any of the following: async: asynchronous sync: synchronous

• Example

  PUT https://rds.eu-de.otc.t-systems.com/v3/0483b6b16e954cb88930a360d2c4e663/instances/dsfae23fsfdsae3435in01/failover/mode

• Request example

  {
      "mode": "semisync"
  }

Response

• Normal response

  Name	Description
  workflowId	Indicates the workflow ID. For details about how to query this parameter, see Obtaining Task Information.
  instanceId	Indicates the DB instance ID.
  replicationMode	Indicates the replication mode.

• Example normal response

  {
      "instanceId": "c8a7d0abe94840dda99bc437e9442982in01",
      "replicationMode": "semisync",
      "workflowId": "7b55d6ca-dc8e-4844-a9da-6c53a1506db3"
  }

• Abnormal response

  For details, see Abnormal Request Results.

Status Code

• Normal

  200

• Abnormal

  For details, see Status Codes.

Error Code

For details, see Error Codes.

Parent topic: DB Instance Management