RescaleApplication-阿里云帮助中心

Rescale an application.

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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

sae:RescaleApplication

update

*All Resource

*

None

Request syntax

PUT /pop/v1/sam/app/rescaleApplication HTTP/1.1

Request parameters

Parameter	Type	Required	Description	Example
AppId	string	Yes	The ID of the application.	0099b7be-5f5b-4512-a7fc-56049ef1****
Replicas	integer	Yes	The expected number of instances.	5
MinReadyInstances	integer	No	The minimum number of available instances. Special values: If you set the value to 0, business interruptions occur when the application is updated. If you set the value to -1, the minimum number of available instances is automatically set to a system-recommended value. The value is the nearest integer to which the calculated result of the following formula is rounded up: Current number of instances × 25%. For example, if five instances are available, the minimum number of available instances is calculated by using the following formula: 5 × 25% = 1.25. In this case, the minimum number of available instances is 2. Note Make sure that at least one instance is available during application deployment and rollback to prevent business interruptions.	1
MinReadyInstanceRatio	integer	No	The percentage of the minimum number of available instances. Take note of the following rules: If you set the value to -1, the minimum number of available instances is not determined based on this parameter. Default value: -1. If you set the value to a number from 0 to 100, the minimum number of available instances is calculated by using the following formula: Current number of instances × (Value of MinReadyInstanceRatio × 100%). The value is the nearest integer rounded up from the calculated result. For example, if the percentage is set to 50% and five instances are available, the minimum number of available instances is 3. Note When MinReadyInstance and MinReadyInstanceRatio are specified and MinReadyInstanceRatio is set to a number from 0 to 100, the value of MinReadyInstanceRatio takes precedence. For example, if MinReadyInstances is set to 5, and MinReadyInstanceRatio is set to 50, the minimum number of available instances is set to the nearest integer rounded up from the calculated result of the following formula: Current number of instances × 50%.	-1
AutoEnableApplicationScalingRule	boolean	No	Specifies whether to automatically enable an auto scaling policy for the application. Take note of the following rules: true: turns on Logon-free Sharing false: turns off Logon-free Sharing	true

Response elements

Element	Type	Description	Example
	object	The data returned.
Message	string	The message returned for the operation.	success
RequestId	string	The ID of the request.	91F93257-7A4A-4BD3-9A7E-2F6EAE6D****
Data	object	The response.
ChangeOrderId	string	The ID of the change order.	0e09829f-4914-4612-bc88-6f52fd81****
ErrorCode	string	The error code returned if the request failed. Take note of the following rules: The ErrorCode parameter is not returned if the request succeeds. If the call fails, the ErrorCode parameter is returned. For more information, see the "Error codes" section of this topic.	Null
Code	string	The HTTP status code. Take note of the following rules: 2xx: The call was successful. 3xx: The call was redirected. 4xx: The call failed. 5xx: A server error occurred.	200
Success	boolean	Indicates whether the application is successfully scaled. Take note of the following rules: true false	true

Examples

Success response

JSON format

{
  "Message": "success",
  "RequestId": "91F93257-7A4A-4BD3-9A7E-2F6EAE6D****",
  "Data": {
    "ChangeOrderId": "0e09829f-4914-4612-bc88-6f52fd81****"
  },
  "ErrorCode": "Null\n",
  "Code": "200",
  "Success": true
}

Error codes

HTTP status code	Error code	Error message	Description
400	InvalidApplication.NotFound	The current application does not exist.
400	InvalidParameter.NotEmpty	You must specify the parameter %s.
400	InvalidParameter.Obviously	The specified parameter is invalid {%s}.
400	InvalidParameter.WithMessage	The parameter is invalid {%s}: %s
400	user.indebt	The user has an outstanding payment.
400	NoComputeResourceQuota.App.Exceed	You can create %s instances for each application. Please submit a ticket to raise the quota.	You can create %s instances for each application. please join the DingTalk group 32874633 for technical support.
400	NoComputeResourceQuota.Exceed	Your compute resource is insufficient. Please contact us to raise the quota.
400	NoComputeResourceQuota.User.Exceed	Your account is limited to create %s instances. Please submit a ticket to raise the quota.	Your account is limited to create %s instances. please join the DingTalk group 32874633 for technical support.
400	System.Upgrading	The system is being upgraded. Please try again later.
400	Application.ChangerOrderRunning	An application change process is in progress. Please try again later.	An application change process is in progress. Please try again later.
400	Application.InvalidStatus	The application status is abnormal. Please try again later.	The application status is abnormal. Please try again later.
400	Application.NotDeployYet	The application has not been deployed. Please deploy it and try again.	The application has not been deployed. Please deploy it and try again.
400	MinReadyInstances.Not.Smaller.Replicas	The minimum number of available instances must be less than the number of application instances.	The minimum number of available instances must be less than the number of application instances.
400	MinReadyInstanceRatio.Invalid	The ratio of minimum available instances must be between 0 and 100.
404	Associate.Eip.Not.Enough	No sufficient EIPs are available.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.