tencent cloud



Last updated: 2023-04-13 10:03:28

1. API Description

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

This API is used to add the specified number of instances to the scaling group, which returns the scaling activity ID ActivityId.

  • There is no on going scaling task.
  • This API is valid even when the scaling group is disabled. For more details, see DisableAutoScalingGroup.
  • The desired capacity will be increased accordingly. The new desired capacity should be no more than the maximum capacity.
  • If the scale-out activity failed or partially succeeded, the final desired capacity only includes the instances that have been added successfully.

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

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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: ScaleOutInstances.
Version Yes String Common Params. The value used for this API: 2018-04-19.
Region No String Common Params. This parameter is not required for this API.
AutoScalingGroupId Yes String Scaling group ID
ScaleOutNumber Yes Integer Number of instances to be added

3. Output Parameters

Parameter Name Type Description
ActivityId String Scaling activity ID
RequestId String The unique request ID, which is returned for each request. RequestId is required for locating a problem.

4. Example

Example1 This example shows you how to add one instance to the scaling group

Input Example

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

    "AutoScalingGroupId": "asg-12yqet78",
    "ScaleOutNumber": 1

Output Example

    "Response": {
        "ActivityId": "asa-k1q8oaz6",
        "RequestId": "6af368fd-35ff-4dcc-b302-35c378f2cccb"

5. Developer Resources


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.
LimitExceeded.DesiredCapacityLimitExceeded The desired number of instances exceeds the limit.
ResourceInsufficient.AutoScalingGroupAboveMaxSize The maximum number of instances in the auto scaling group is exceeded.
ResourceNotFound.AutoScalingGroupNotFound The scaling group does not exist.
ResourceUnavailable.AutoScalingGroupInActivity The auto scaling group is active.
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