This API is used to change a single DB instance to primary/standby DB instances.

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.

Parameter description

**Table 2** Parameter description
Name	Mandatory	Type	Description
single_to_ha	Yes	Object	For details, see Table 3.

**Table 3** single_to_ha field data structure description
Name	Mandatory	Type	Description
az_code_new_node	Yes	String	Specifies the AZ code of the DB instance node.
password	No	String	This parameter is mandatory only when a Microsoft SQL Server DB instance type is changed from single to primary/standby.

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

Request example

{
	"single_to_ha": {
		"az_code_new_node": "az2xahz",
		"password": "Test@1234567"
	}
}

**Table 4** Parameter description
Name	Type	Description
job_id	String	Indicates the task ID.

Example normal response

{
	"job_id": "2b414788a6004883a02390e2eb0ea227"
}

For details, see Error Codes.

Changing a Single DB Instance to Primary/Standby DB Instances