Last updated: 2020-02-18 16:56:10


1. API Description

Domain name for API request:

This API is used to scale out instance.

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

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 parameter. The value used for 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, please see the list of regions supported by the product.
TimeUnit Yes String Time unit of scale-out. Valid values:
  • s: seconds. When PayMode is 0, TimeUnit can only be s.
  • m: month. When PayMode is 1, TimeUnit can only be m.
  • TimeSpan Yes Integer Duration of scale-out, which needs to be used together with TimeUnit.
    InstanceId Yes String Instance ID.
    PayMode Yes Integer Instance billing mode. Valid values:
  • 0: pay-as-you-go.
  • ClientToken No String Client token.
    PreExecutedFileSettings.N No Array of PreExecuteFileSettings Bootstrap script settings.
    TaskCount No Integer Number of task nodes added.
    CoreCount No Integer Number of core nodes added.
    UnNecessaryNodeList.N No Array of Integer Process not required during scale-out.
    RouterCount No Integer Number of router nodes added.
    SoftDeployInfo.N No Array of Integer Deployed service.
  • SoftDeployInfo and ServiceNodeInfo are in the same group and mutually exclusive with UnNecessaryNodeList.
  • The combination of SoftDeployInfo and ServiceNodeInfo is recommended.
  • ServiceNodeInfo.N No Array of Integer Started process.
    DisasterRecoverGroupIds.N No Array of String List of spread placement group IDs. Only one can be specified currently.
    Tags.N No Array of Tag List of tags bound to added nodes.

    3. Output Parameters

    Parameter Name Type Description
    InstanceId String Instance ID.
    DealNames Array of String Order number.
    Note: this field may return null, indicating that no valid values can be obtained.
    ClientToken String Client token.
    Note: this field may return null, indicating that no valid values can be obtained.
    FlowId Integer
    BillId String
    RequestId String The unique request ID, which is returned for each request. RequestId is required for locating a problem.

    4. Example

    Example1 Scaling out instance

    Input Example
    &<Common Request Parameters>

    Output Example

      "Response": {
        "ClientToken": "jaco3",
        "DealNames": [
        "InstanceId": "emr-cf00laqw",
        "RequestId": "067ed48b-1b27-4497-aaac-36db76f5bcf1"

    5. Developer Resources

    API Explorer

    This tool allows online call, signature authentication, SDK code generation and quick search of APIs to greatly improve the efficiency of using TencentCloud APIs.


    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
    InternalError Internal error.
    InvalidParameter Invalid parameter.
    InvalidParameter.InvaildCoreCount The number of core nodes cannot exceed 20.
    InvalidParameter.InvalidAppId Invalid AppId.
    InvalidParameter.InvalidClientToken Invalid ClientToken.
    InvalidParameter.InvalidClusterId Invalid parameter: ClusterId.
    InvalidParameter.InvalidCount The number of nodes for scale-out must be greater than 0.
    InvalidParameter.InvalidCountNum An individual scale-out request only applies to task nodes or core nodes.
    InvalidParameter.InvalidServiceNodeInfo The ServiceNodeInfo parameter is invalid or incorrect.
    InvalidParameter.InvalidSoftDeployInfo The InvalidSoftDeployInfo parameter is invalid or incorrect.
    InvalidParameter.InvalidTaskCount The number of task nodes cannot exceed 20
    InvalidParameter.InvalidTimeSpan Invalid timespan.
    InvalidParameter.InvalidTimeUnit Invalid TimeUnit.
    ResourceInUse.InstanceInProcess The instance is under workflow.
    ResourceNotFound.ClusterNotFound The instance was not found.
    ResourceNotFound.TagsNotFound No specified tag found.
    ResourcesSoldOut. The resources have been sold out.
    ResourcesSoldOut.CbsSoldOut The CBS resources have been sold out.
    ResourcesSoldOut.CvmSoldOut CVM instances have been sold out.