Help Center/ GaussDB/ API Reference/ APIs (Recommended)/ DR Management/ Switching Roles of Primary and DR Instances
Updated on 2025-08-11 GMT+08:00
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Switching Roles of Primary and DR Instances

Function

This API is used to switch roles of primary and DR instances. The request can be submitted by either the primary instance or DR instance. Before calling this API:

URI

POST /v3.5/{project_id}/instances/{instance_id}/disaster-recovery/switchover

Table 1 Parameter description

Parameter

Mandatory

Description

project_id

Yes

Definition

Project ID of a tenant in a region.

To obtain the value, see Obtaining a Project ID.

Constraints

N/A

Range

The value can contain 32 characters. Only letters and digits are allowed.

Default Value

N/A

instance_id

Yes

Definition

Instance ID, which uniquely identifies an instance.

Constraints

N/A

Range

The value can contain 36 characters. Only letters and digits are allowed.

Default Value

N/A

Request Parameters

Table 2 Parameter description

Parameter

Mandatory

Type

Description

disaster_type

Yes

String

Definition

DR type.

Constraints

N/A

Range

  • stream: streaming DR.

Default Value

N/A

post_process_config

No

String

Definition

Whether to support self-healing upon a switchover failure. If this parameter is left empty, self-healing is not supported by default.

Constraints

This parameter is only available for streaming DR in quorum mode and the DB engine version is V2.0-8.200 or later in a DR task.

Range

  • AUTO: Self-healing is supported.
  • MANUAL: Self-healing is not supported.

Default Value

N/A

Response Parameters

Table 3 Response body parameters

Parameter

Type

Description

job_id

String

Definition

Job ID.

Range

N/A

Example Request

POST https://gaussdb-opengauss.ap-southeast-1.myhuaweicloud.com/v3.5/0483b6b16e954cb88930a360d2c4e663/instances/c04c789b6baa4b6dbcc139c5226f3a2cin14/disaster-recovery/switchover
{ 
	"disaster_type" : "stream" 
}

Example Response

{ 
    "job_id":"8bf0175e-562e-45f6-942a-2e2c72c577d7" 
}

Status Codes

Error Codes

For details, see Error Codes.

Parent topic: DR Management