AttachDisks

Last updated: 2025-11-13 20:49:20

AttachDisks

Last updated: 2025-11-13 20:49:20

1. API Description

Domain name for API request: emr.intl.tencentcloudapi.com.

This API is used to mount cloud disks.

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

We recommend you to use API Explorer

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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: AttachDisks.
Version	Yes	String	Common Params. The value used for this API: 2019-01-03.
Region	Yes	String	Common Params. For more information, please see the list of regions supported by the product.
InstanceId	Yes	String	ID of the EMR cluster instance.
DiskIds.N	No	Array of String	Cloud disk ID required for mounting.
AlignType	No	String	Mount mode. Valid values. AUTO_RENEW: auto-renewal. ALIGN_DEADLINE: automatic alignment with the deadline.
CvmInstanceIds.N	No	Array of String	List of CVM node IDs requiring mounting.
CreateDisk	No	Boolean	Whether to mount newly purchased cloud disks.
DiskSpec	No	NodeSpecDiskV2	Specifications of newly purchased cloud disks.
DeleteWithInstance	No	Boolean	Optional parameter. Only mount operation is performed if this parameter is not passed. When True is passed, the CBS will be set to termination with the cloud host upon successful mounting. This is only applicable to pay-as-you-go cloud disk.
SelectiveConfServices.N	No	Array of String	Name list of services that can be configured when a new disk is mounted.
ChargeType	No	Integer	Disk billing type (1: monthly subscription, 3: committed use).
UnderWriteDuration	No	Integer	Disk committed use and purchase duration (only supports 12, 24, 36, 48, and 60).

3. Output Parameters

Parameter Name	Type	Description
FlowId	Integer	Flow 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 Mounting Cloud Disks

Input Example

POST / HTTP/1.1
Host: emr.intl.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: AttachDisks
<Common request parameters>

{
    "InstanceId": "emr-xxxx",
    "DiskIds": [
        "disk-xxx1",
        "disk-xxx2"
    ]
}

Output Example

{
    "Response": {
        "RequestId": "95eb9120-0883-407c-aa5a-43b4e2c250d1"
    }
}

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

Tencent Cloud CLI 3.0

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.InvalidClusterId	Invalid parameter: ClusterId.
ResourceInUse.InstanceInProcess	The instance is under workflow.

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