tencent cloud



Last updated: 2022-05-12 11:18:09

1. API Description

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

This API (ModifyLaunchConfigurationAttributes) is used to modify some attributes of a launch configuration.

  • The changes of launch configuration do not affect the existing instances. New instances will be created based on the modified configuration.
  • This API supports modifying certain simple types of attributes.

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: ModifyLaunchConfigurationAttributes.
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.
LaunchConfigurationId Yes String Launch configuration ID
ImageId No String Valid image ID in the format of img-8toqc6s3. There are four types of images:
  • Public images
  • Custom images
  • Shared images
  • Marketplace images

  • You can obtain the available image IDs in the following ways:
  • For public images, custom images, and shared images, log in to the console to query the image IDs; for marketplace images, query the image IDs through Cloud Marketplace.
  • This value can be obtained from the ImageId field in the return value of the DescribeImages API.
  • InstanceTypes.N No Array of String List of instance types. Each type specifies different resource specifications. This list contains up to 10 instance types.
    The launch configuration uses InstanceType to indicate one single instance type and InstanceTypes to indicate multiple instance types. Specifying the InstanceTypes field will invalidate the original InstanceType.
    InstanceTypesCheckPolicy No String Instance type verification policy which works when InstanceTypes is actually modified. Value range: ALL, ANY. Default value: ANY.

  • ALL: The verification will success only if all instance types (InstanceType) are available; otherwise, an error will be reported.

  • ANY: The verification will success if any instance type (InstanceType) is available; otherwise, an error will be reported.

    Common reasons why an instance type is unavailable include stock-out of the instance type or the corresponding cloud disk.
    If a model in InstanceTypes does not exist or has been discontinued, a verification error will be reported regardless of the value of InstanceTypesCheckPolicy.
  • LaunchConfigurationName No String Display name of the launch configuration, which can contain Chinese characters, letters, numbers, underscores, separators ("-"), and decimal points with a maximum length of 60 bytes.
    UserData No String Base64-encoded custom data of up to 16 KB. If you want to clear UserData, set it to an empty string.
    SecurityGroupIds.N No Array of String Security group to which the instance belongs. This parameter can be obtained from the SecurityGroupId field in the response of the DescribeSecurityGroups API.
    At least one security group is required for this parameter. The security group specified is sequential.
    InternetAccessible No InternetAccessible Information of the public network bandwidth configuration.
    When the public outbound network bandwidth is 0 Mbps, assigning a public IP is not allowed. Accordingly, if a public IP is assigned, the new public network outbound bandwidth must be greater than 0 Mbps.
    InstanceChargeType No String Instance billing mode. Valid values:

  • POSTPAID_BY_HOUR: pay-as-you-go hourly

  • SPOTPAID: spot instance
  • InstanceChargePrepaid No InstanceChargePrepaid Parameter setting for the prepaid mode (monthly subscription mode). This parameter can specify the renewal period, whether to set the auto-renewal, and other attributes of the monthly-subscribed instances.
    This parameter is required when changing the instance billing mode to monthly subscription. It will be automatically discarded after you choose another billing mode.
    This field requires passing in the Period field. Other fields that are not passed in will use their default values.
    This field can be modified only when the current billing mode is monthly subscription.
    InstanceMarketOptions No InstanceMarketOptionsRequest Market-related options for instances, such as parameters related to spot instances.
    This parameter is required when changing the instance billing mode to spot instance. It will be automatically discarded after you choose another instance billing mode.
    This field requires passing in the MaxPrice field under the SpotOptions. Other fields that are not passed in will use their default values.
    This field can be modified only when the current billing mode is spot instance.
    DiskTypePolicy No String Selection policy of cloud disks. Default value: ORIGINAL. Valid values:

  • ORIGINAL: uses the configured cloud disk type

  • AUTOMATIC: automatically chooses an available cloud disk type
  • SystemDisk No SystemDisk Instance system disk configurations
    DataDisks.N No Array of DataDisk Configuration information of instance data disks.
    Up to 11 data disks can be specified and will be collectively modified. Please provide all the new values for the modification.
    The default data disk should be the same as the system disk.
    HostNameSettings No HostNameSettings CVM hostname settings.
    This field is not supported for Windows instances.
    This field requires passing the HostName field. Other fields that are not passed in will use their default values.
    InstanceNameSettings No InstanceNameSettings Settings of CVM instance names.
    If this field is configured in a launch configuration, the InstanceName of a CVM created by the scaling group will be generated according to the configuration; otherwise, it will be in the as-{{AutoScalingGroupName }} format.
    This field requires passing in the InstanceName field. Other fields that are not passed in will use their default values.
    EnhancedService No EnhancedService Specifies whether to enable additional services, such as security services and monitoring service.
    CamRoleName No String CAM role name. This parameter can be obtained from the roleName field returned by DescribeRoleList API.

    3. Output Parameters

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

    4. Example

    Example1 Modifying the image, instance type and name of the specified launch configuration

    Input Example

    &<Common request parameters>

    Output Example

      "Response": {
        "RequestId": "07022dcb-5bba-48f0-a2b0-800ad006d031"

    Example2 Clearing UserData

    Input Example

    POST / HTTP/1.1
    Host: as.tencentcloudapi.com
    Content-Type: application/json
    X-TC-Action: ModifyLaunchConfigurationAttributes
    <Common request parameters>
        "LaunchConfigurationId": "asc-291kq6ku",
        "UserData": ""

    Output Example

      "Response": {
        "RequestId": "2c027f22-3a3b-489a-a77a-89c53fc15212"

    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.Conflict Multiple parameters specified conflict and cannot co-exist.
    InvalidParameter.HostNameUnavailable The hostname parameter is unavailable to this image.
    InvalidParameter.InScenario The parameter is invalid in a specific scenario.
    InvalidParameter.InvalidCombination Invalid parameter combination.
    InvalidParameter.ParameterMustBeDeleted Some parameters cannot coexist and should be deleted.
    InvalidParameterValue Wrong parameter value.
    InvalidParameterValue.CvmConfigurationError Exception with CVM parameter validation.
    InvalidParameterValue.HostNameIllegal Invalid hostname
    InvalidParameterValue.ImageNotFound The specified image does not exist.
    InvalidParameterValue.InstanceNameIllegal Invalid instance name
    InvalidParameterValue.InstanceTypeNotSupported The instance type is not supported.
    InvalidParameterValue.InvalidImageId Invalid image ID.
    InvalidParameterValue.InvalidInstanceType Invalid instance type.
    InvalidParameterValue.InvalidLaunchConfigurationId Invalid launch configuration ID.
    InvalidParameterValue.LaunchConfigurationNameDuplicated The launch configuration name already exists.
    InvalidParameterValue.NotStringTypeFloat The value should be a floating point string.
    InvalidParameterValue.TooLong Too many values.
    InvalidParameterValue.TooShort The value of input parameter is too short.
    InvalidParameterValue.UserDataFormatError Incorrect UserData format.
    InvalidParameterValue.UserDataSizeExceeded The UserData is too long.
    MissingParameter Parameter missing.
    MissingParameter.InScenario A parameter is missing in a specific scenario.
    ResourceNotFound.LaunchConfigurationIdNotFound The specified launch configuration does not exist.
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