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DescribeDCDBInstanceNodeInfo

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Última atualização: 2025-10-24 14:51:15

1. API Description

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

This API is used to query the information of instance nodes.

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

We recommend you to use API Explorer

Try it

API Explorer provides a range of capabilities, including online call, signature authentication, SDK code generation, and API quick search. It enables you to view the request, response, and auto-generated examples.

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: DescribeDCDBInstanceNodeInfo.
Version	Yes	String	Common Params. The value used for this API: 2018-04-11.
Region	No	String	Common Params. This parameter is not required for this API.
InstanceId	Yes	String	Instance ID
Limit	No	Integer	The maximum number of results returned at a time. Value range: (0-100]. Default value: `100`.
Offset	No	Integer	Offset of the returned results. Default value: `0`.

3. Output Parameters

Parameter Name	Type	Description
TotalCount	Integer	Total number of nodes
NodesInfo	Array of BriefNodeInfo	Node information
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 Querying the information of instance nodes

Input Example

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

{
    "InstanceId": "tdsqlshard-8upuqubt"
}

Output Example

{
    "Response": {
        "NodesInfo": [
            {
                "NodeId": "b991a3d602da35cf7bf64dcafcd5f7ad589aa6d9",
                "Role": "master",
                "ShardId": "shard-he2hj3al"
            },
            {
                "NodeId": "9a498278e1775355cac16c23d65c59204aec52f1",
                "Role": "slave",
                "ShardId": "shard-he2hj3al"
            },
            {
                "NodeId": "3c698ab9547674e361bae013439225356175668d",
                "Role": "master",
                "ShardId": "shard-mgsnag2z"
            },
            {
                "NodeId": "2f0714ded5eaef1dd927fdc1429350470ce0017b",
                "Role": "slave",
                "ShardId": "shard-mgsnag2z"
            }
        ],
        "RequestId": "6b8b1984-c226-46d9-ac0a-81e241cf7cdc",
        "TotalCount": 4
    }
}

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
FailedOperation.OssOperationFailed	Failed to request the backend API.
InternalError.InnerSystemError	Internal system error.
InternalError.OperateDatabaseFailed	Database operation failed.
InvalidParameter.InstanceNotFound	Failed to find the requested instance.

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