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
¶ 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
¶ 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
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.