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ScaleInInstances

Last updated: 2024-10-25 15:16:50

    1. API Description

    Domain name for API request: as.tencentcloudapi.com.

    This API is used to reduce the specified number of instances from the scaling group.

    • There is no on going scaling task.
    • This API is valid even when the scaling group is disabled. For more details, see DisableAutoScalingGroup.
    • You can specify the instances to remove in the scale-in activity by using TerminationPolicies. For more information, see Scaling In Policies.
    • Only the IN_SERVICE instances will be reduced. To reduce instances in other statues, use the DetachInstances or RemoveInstances API.
    • The desired capacity will be reduced accordingly. The new desired capacity should be no less than the minimum capacity.
    • If the scale-in activity failed or partially succeeded, the final desired capacity only deducts the instances that have been reduced successfully.

    A maximum of 20 requests can be initiated per second for this API.

    We recommend you to use API Explorer
    Try it
    API Explorer provides a range of capabilities, including online call, signature authentication, SDK code generation, and API quick search. It enables you to view the request, response, and auto-generated examples.

    2. Input Parameters

    The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

    Parameter Name Required Type Description
    Action Yes String Common Params. The value used for this API: ScaleInInstances.
    Version Yes String Common Params. The value used for this API: 2018-04-19.
    Region Yes String Common Params. For more information, please see the list of regions supported by the product.
    AutoScalingGroupId Yes String Scaling group ID
    ScaleInNumber Yes Integer Number of instances to be reduced

    3. Output Parameters

    Parameter Name Type Description
    ActivityId String Scaling activity ID
    RequestId String The unique request ID, generated by the server, will be returned for every request (if the request fails to reach the server for other reasons, the request will not obtain a RequestId). RequestId is required for locating a problem.

    4. Example

    Example1 This example shows you how to reduce one instance from the scaling group.

    Input Example

    POST / HTTP/1.1
Host: as.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: ScaleInInstances
&<Common request parameters>

{
    "AutoScalingGroupId": "asg-12yqet78",
    "ScaleInNumber": 1
}

    Output Example

    {
    "Response": {
        "ActivityId": "asa-n6w01f6m",
        "RequestId": "c0bb46ea-2b47-471c-9099-e20bf7a23078"
    }
}

    5. Developer Resources

    SDK

    TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

    Command Line Interface

    6. Error Code

    The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

    Error Code Description
    InvalidParameter.ActionNotFound Invalid Action request.
    InvalidParameterValue.InvalidAutoScalingGroupId Invalid scaling group ID.
    InvalidParameterValue.Range The value is outside the specified range.
    MissingParameter Parameter missing.
    ResourceInsufficient.AutoScalingGroupBelowMinSize The number of instances in the auto scaling group is below the minimum value.
    ResourceNotFound.AutoScalingGroupNotFound The scaling group does not exist.
    ResourceUnavailable.AutoScalingGroupInActivity The auto scaling group is active.
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