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Auto Scaling:DescribeRegions

Last Updated:Jun 06, 2024

Queries regions. Before you activate Auto Scaling, you can call the DescribeRegions operation to query the regions where Auto Scaling is officially launched. This preliminary step facilitates the strategic selection of both the optimal region and availability zones for activating Auto Scaling, thereby guaranteeing the finest access speeds and operational efficiency within your chosen geographical area.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

  • Operation: the value that you can use in the Action element to specify the operation on a resource.
  • Access level: the access level of each operation. The levels are read, write, and list.
  • Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
    • The required resource types are displayed in bold characters.
    • If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
  • Condition Key: the condition key that is defined by the cloud service.
  • Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
OperationAccess levelResource typeCondition keyAssociated operation
ess:DescribeRegionsRead
  • All Resources
    *
    none
none

Request parameters

ParameterTypeRequiredDescriptionExample
AcceptLanguagestringNo

The language for the response. For more information, see RFC7231 . Valid values:

  • zh-CN: Chinese
  • en-US: English
  • ja: Japanese

Default value: zh-CN.

zh-CN

Response parameters

ParameterTypeDescriptionExample
object
RequestIdstring

The ID of the request.

73469C7-AA6F-4DC5-B3DB-A3DC0DE3****
Regionsobject []

The collection of region information.

ClassicUnavailableboolean

Indicates whether the current region supports scaling groups that reside in the classic network. Valid values:

  • true
  • false
false
RegionEndpointstring

The region endpoint.

ess.aliyuncs.com
LocalNamestring

The region name.

China (Beijing)
VpcUnavailableboolean

Indicates whether the current region supports scaling groups that reside in virtual private clouds (VPCs). Valid values:

  • true
  • false
false
RegionIdstring

The region ID.

cn-beijing

Examples

Sample success responses

JSONformat

{
  "RequestId": "73469C7-AA6F-4DC5-B3DB-A3DC0DE3****",
  "Regions": [
    {
      "ClassicUnavailable": false,
      "RegionEndpoint": "ess.aliyuncs.com",
      "LocalName": "China (Beijing)\n",
      "VpcUnavailable": false,
      "RegionId": "cn-beijing"
    }
  ]
}

Error codes

For a list of error codes, visit the Service error codes.