Last updated: 2019-07-22 16:53:15

1. API Description

API domain name:

This API scales out the specified instance.

Default API request rate limit: 20 requests/sec.

2. Input Parameters

The following parameters are required for requesting this API, including action-specific parameters and common parameters. For more information about common parameters for all requests, see Common Request Parameters.

Parameter Name Required Type Description
Action Yes String Common parameter. The name of this API: ScaleOutInstance
Version Yes String Common parameter. The value used for this API: 2019-01-03
Region Yes String Common parameter. For more information, see the list of regions supported by the product.
ClientToken Yes String Token
TimeUnit Yes String Time unit
TimeSpan Yes Integer Time span
InstanceId Yes String ID of the instance for scale-out
PayMode Yes Integer Payment method
PreExecutedFileSettings No PreExecuteFileSettings Pre-execution script settings
TaskCount No Integer Number of task nodes to add
CoreCount No Integer Number of core nodes to add

3. Output Parameters

Parameter name Type Description
Result ScaleOutInstanceResult Scale-out result
RequestId String The unique ID of a request, which is required for each troubleshooting case.

4. Examples

Example 1. Scaling out an Instance

Input Sample Code
&<Common request parameter>

Output Sample Code

  "Response": {
    "Result": {
      "ClientToken": "jaco3",
      "InstanceId": "emr-b3zor8nr",
      "DealNames": [
    "RequestId": "e00a062d-dfea-4e6e-9de7-8fbc8c7971ab"

5. Developer Resources

API Explorer

This tool provides various capabilities such as online call, signature verification, SDK code generation, and quick API retrieval that significantly reduce the difficulty of using TencentCloud API.


TencentCloud API 3.0 integrates software development toolkits (SDKs) that support various programming languages to make it easier for you to call the APIs.


6. Error Codes

This API has no error codes related to business logic. For other error codes, see Common Error Codes.