DescribeDefaultParams

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Last updated: 2022-01-19 11:36:22

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1. API Description

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

This API (DescribeDefaultParams) is used to query the list of default configurable parameters.

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.
This document describes the parameters for Signature V1. It's recommended to use the V3 signature, which provides higher security. Note that for Signature V3, the common parameters need to be placed in the HTTP Header. See details.

Parameter Name	Required	Type	Description
Action	Yes	String	Common parameter. The value used for this API: DescribeDefaultParams.
Version	Yes	String	Common parameter. The value used for this API: 2017-03-20.
Region	Yes	String	Common parameter. For more information, please see the list of regions supported by the product.
EngineVersion	Yes	String	MySQL version. Currently, the supported versions are ["5.1", "5.5", "5.6", "5.7"].

3. Output Parameters

Parameter Name	Type	Description
TotalCount	Integer	Number of parameters
Items	Array of ParameterDetail	Parameter details.
RequestId	String	The unique request ID, which is returned for each request. RequestId is required for locating a problem.

4. Example

Example1 Querying the list of default configurable parameters

Input Example

https://cdb.tencentcloudapi.com/?Action=DescribeDefaultParams
&EngineVersion=5.7
&<Common request parameters>

Output Example

{
  "Response": {
    "TotalCount": 2,
    "RequestId": "92131c95-aa65-44db-8c3c-e8cd67883b58",
    "Items": [
      {
        "CurrentValue": "800",
        "Name": "max_connections",
        "Min": 1,
        "Default": "151",
        "Max": 10240,
        "ParamType": "integer",
        "EnumValue": [],
        "NeedReboot": 0,
        "Description": "The maximum permitted number of simultaneous client connections."
      },
      {
        "CurrentValue": "utf8",
        "Name": "character_set_server",
        "Min": 0,
        "Default": "utf8",
        "Max": 0,
        "ParamType": "enum",
        "EnumValue": [
          "utf8",
          "utf8mb4",
          "gbk",
          "latin1"
        ],
        "NeedReboot": 1,
        "Description": "Specify default server character set."
      }
    ]
  }
}

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
AuthFailure	CAM signature/authentication error.
CdbError	Backend or process error.
InternalError.DatabaseAccessError	Internal database error.
InternalError.ParamError	Parameter error
InvalidParameter	Parameter error.

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