UpdateServiceAutoScaler - Platform For AI - Alibaba Cloud Documentation Center

Updates the Autoscaler configurations of a service.

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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

eas:UpdateServiceAutoScaler

update

*Service

acs:eas:{#regionId}:{#accountId}:service/{#ServiceName}

None

Request syntax

PUT /api/v2/services/{ClusterId}/{ServiceName}/autoscaler HTTP/1.1

Path Parameters

Parameter	Type	Required	Description	Example
ClusterId	string	Yes	The region ID of the service.	cn-shanghai
ServiceName	string	Yes	The service name. For more information about how to query the service name, see ListServices.	foo

Request parameters

Parameter	Type	Required	Description	Example
body	object	No	The request body.
min	integer	Yes	The minimum number of instances. The value must be greater than 0.	2
max	integer	Yes	The maximum number of instances. The value must be greater than that of the min parameter.	8
scaleStrategies	array<object>	Yes	The auto scaling policies.
	object	No
metricName	string	Yes	The name of the metric for triggering auto scaling. Valid values: qps: the queries per second (QPS) for an individual instance. cpu: the CPU utilization.	qps
threshold	number	Yes	The threshold of the metric that triggers auto scaling. If you set metricName to QPS, scale-out is triggered when the average QPS for a single instance is greater than this threshold. If you set metricName to CPU, scale-out is triggered when the average CPU utilization for a single instance is greater than this threshold.	100
service	string	No	The service for which the metric is specified. If you do not set this parameter, the current service is specified by default.	demo_svc
behavior	object	No	The Autoscaler operation.
scaleUp	object	No	The scale-out operation.
stabilizationWindowSeconds	integer	No	The time window that is required before the scale-out operation is performed. Default value: 0. The scale-out operation can be performed only if the specified metric exceeds the specified threshold in the specified time window.	0
scaleDown	object	No	The scale-in operation.
stabilizationWindowSeconds	integer	No	The time window that is required before the scale-in operation is performed. Default value: 300. The scale-in operation can be performed only if the specified metric drops below the threshold in the specified time window.	300
onZero	object	No	The operation that reduces the number of instances to 0.
scaleDownGracePeriodSeconds	integer	No	The time window that is required before the number of instances is reduced to 0. Default value: 600. The number of instances can be reduced to 0 only if no request is available or no traffic exists in the specified time window.	600
scaleUpActivationReplicas	integer	No	The number of instances that you want to create at a time if the number of instances is scaled out from 0. Default value: 1.	1

Response elements

Element	Type	Description	Example
	object	The response parameters.
RequestId	string	The request ID.	40325405-579C-4D82****
Message	string	The returned message.	Update auto scale for service [foo] successfully

Examples

Success response

JSON format

{
  "RequestId": "40325405-579C-4D82****",
  "Message": "Update auto scale for service [foo] successfully"
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.