All Products
Search
Document Center

ENS:RescaleApplication

Last Updated:Mar 27, 2026

Scales resources in an asynchronous manner and deploys or releases the container.

Try it now

Try this API in OpenAPI Explorer, no manual signing needed. Successful calls auto-generate SDK code matching your parameters. Download it with built-in credential security for local usage.

Test

RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

ens:RescaleApplication

update

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

AppId

string

Yes

The ID of the application. You can query the application ID by calling the ListApplications operation.

474bdef0-d149-4695-abfb-52912d9143f0

RescaleType

string

Yes

The scaling operation. The value must be of the enumerated data type. Valid values:

  • Add: adds new resources.

  • Del: releases resources.

Add

RescaleLevel

string

No

The level of resource scaling. The value is of the enumeration type. Valid values:

  • AreaIspCode (default): scales resources based on the Internet service provider (ISP).

  • RegionId: scales resources based on the edge node.

  • InstanceId: scales resources based on the instance ID. Resource scale-out specifies resource hosting and scale-in specifies resource release.

Default value: AreaIspCode.

Valid values:

  • AreaIspCode :
  • InstanceId :
  • RegionId :

RegionId

ResourceSelector

string

Yes

The required resources. The value must be a JSON string.

[{\"regionCode\": \"cn-wuxi-telecom_unicom_cmcc-3\", \"ispCode\": \"telecom\", \"count\": 2 },{ \"regionCode\": \"cn-shanghai-cmcc\", \"count\": 4 }]

ToAppVersion

string

No

The version number of the application deployment package. By default, the stable version number is used. This parameter takes effect only when you perform resource scale-out.

v2

Timeout

integer

No

The timeout period for asynchronous scaling. Unit: seconds. Default value: 300.

1800

Response elements

Element

Type

Description

Example

object

RequestId

string

The ID of the request.

AAE90880-4970-4D81-A534-A6C0F3631F74

Examples

Success response

JSON format

{
  "RequestId": "AAE90880-4970-4D81-A534-A6C0F3631F74"
}

Error codes

HTTP status code

Error code

Error message

Description

400 MissingParameter The input parameter that is mandatory for processing this request is not supplied.
400 NoPermission Permission denied.
400 InvalidParameter.%s The specified field %s invalid. Please check it again.
400 InvalidParameter The errorMessage is %s. Please check it again.
400 ens.interface.error An error occurred while calling the API.
400 CallInterface Call Interface Happen Error. An error occurred when you call the operation.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.