Enabling DR Drill

Function

This API is used to enable DR drill on the DR instance.

During the DR drill, the DR instance provides services and the incremental data is temporarily cached in the primary instance. After the drill is complete, the DR instance can perform incremental replay based on the temporarily stored incremental data. If the cached incremental data exceeds the value of this parameter, the DR instance will replay all data after the drill is complete. Before calling this API:

Learn how to authenticate this API.
Obtain the required region and endpoint.

Constraints

This function is supported only when streaming DR is used and the DB engine version is V2.0-3.200 or later.

URI

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

**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
xlog_keep_ratio	No	Integer	Definition Ratio of the log cache space to the available disk space. Constraints This parameter does not take effect for DR instances. Range 1–99 Default Value 10 for the primary instance
disaster_type	Yes	String	Definition DR type. Constraints N/A Range stream: streaming DR. 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/simulation-start
{ 
	"xlog_keep_ratio":50,
        "disaster_type" : "stream" 
}

Example Response

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

Status Codes

Normal
202
Abnormal
For details, see Status Codes.

Error Codes

For details, see Error Codes.

Parent topic: DR Management

Previous topic: Re-establishing a DR Relationship

Next topic: Disabling DR Drill

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