Modifying a Storage Autoscaling Policy

Function

This API is used to modify a storage autoscaling policy. Before calling this API:

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

Debugging

You can debug this API in API Explorer.

URI

PUT /v3/{project_id}/instances/{instance_id}/auto-enlarge-policy

**Table 1** Parameter description
Parameter	Mandatory	Type	Description
project_id	Yes	String	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	String	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** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	Definition User token. You can obtain the token by calling the IAM API used to obtain a user token. The value of X-Subject-Token in the response header is the token value. Constraints N/A Range N/A Default Value N/A
X-Language	No	String	Definition Language. Constraints N/A Range zh-cn en-us Default Value en-us

**Table 3** Request body parameters
Parameter	Mandatory	Type	Description
switch_option	No	Boolean	Definition Whether to enable or disable storage autoscaling. Constraints N/A Range true false Default Value false
limit_volume_size	No	Integer	Definition Maximum storage that can be automatically scaled to. Constraints N/A Range N/A Default Value N/A
trigger_available_percent	No	Integer	Definition Percentage of available storage. The storage will be automatically scaled up if the available storage drops to or below the value of this parameter. Constraints N/A Range 0–100 Default Value 20
step_size	No	Integer	Definition Scaling step when the storage is scaled by fixed size. Constraints Multiple of 40 Range N/A Default Value 40
step_percent	No	Integer	Definition Scaling step when the storage is scaled by percentage. Constraints The value cannot be less than 1. Range N/A Default Value 20

Response Parameters

None

Example Request

Modifying a storage autoscaling policy

PUT https://gaussdb-opengauss.ap-southeast-1.myhuaweicloud.com/v3/054e292c9880d4992f02c0196d3ea468/instances/cc6fd964d93f4003851dfc29d57d30a5in14/auto-enlarge-policy
{
	"switch_option": true,
	"trigger_available_percent": 20,
	"limit_volume_size": 120,
	"step_percent": 20
}