Queries parameter templates that are available in a region.

You can configure a number of parameters at a time by using a parameter template and then apply the parameter template to an ApsaraDB for RDS instance. For more information, see Use a parameter template to manage parameters.

Note Parameter templates are supported only for RDS instances that run MySQL.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes DescribeParameterGroups

The operation that you want to perform. Set this parameter to DescribeParameterGroups.

RegionId String Yes cn-hangzhou

The ID of the region. You can call the DescribeRegions operation to query the most recent region list.

Response parameters

Parameter Type Example Description
ParameterGroups Array

The list of parameter templates.
ParameterGroup
CreateTime String 2019-11-21T01:48:39Z

The time when the parameter template was created. The time follows the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time is displayed in UTC.

Engine String mysql

The database engine.
EngineVersion String 5.7

The version of the database engine.
ForceRestart Integer 1

Indicates whether applying the parameter template requires the instance to be restarted. Valid values:

  • 0: A restart is not required.
  • 1: A restart is required.
ParamCounts Integer 2

The number of parameters in the parameter template.
ParameterGroupDesc String testgroup

The description of the parameter template.
ParameterGroupId String rpg-xxxxxxx

The ID of the parameter template.
ParameterGroupName String test1234

The name of the parameter template.
ParameterGroupType Integer 1

The type of the parameter template. Valid values:

  • 0: indicates a default parameter template.
  • 1: indicates a custom parameter template.
  • 2: an automatic backup parameter template. After you apply this type of template to an RDS instance, the system automatically backs up the parameter settings of that instance and saves the data backup as a template.
UpdateTime String 2019-11-21T02:21:35Z

The time when the parameter template was last updated. The time follows the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time is displayed in UTC.

RequestId String D4A23265-C5B6-42E1-98A0-EFA1EB42E723

The ID of the request.
SignalForOptimizeParams Boolean false

Indicates whether no parameter templates exist in the region. Valid values:

  • true
  • false

Examples

Sample requests

http(s)://rds.aliyuncs.com/? Action=DescribeParameterGroups
&RegionId=cn-hangzhou
&<Common request parameters>

Sample success responses

XML format 

<DescribeParameterGroupsResponse>
  <RequestId>D4A23265-C5B6-42E1-98A0-EFA1EB42E723</RequestId>
  <ParameterGroups>
        <ParameterGroup>
              <ParameterGroupType>1</ParameterGroupType>
              <ParameterGroupName>testgroup123</ParameterGroupName>
              <CreateTime>2019-11-21T01:48:39Z</CreateTime>
              <ParameterGroupDesc></ParameterGroupDesc>
              <ParamCounts>2</ParamCounts>
              <UpdateTime>2019-11-21T01:48:39Z</UpdateTime>
              <ForceRestart>1</ForceRestart>
              <EngineVersion>5.7</EngineVersion>
              <Engine>mysql</Engine>
              <ParameterGroupId>rpg-xxxxxxx</ParameterGroupId>
        </ParameterGroup>
        <ParameterGroup>
              <ParameterGroupType>1</ParameterGroupType>
              <ParameterGroupName>test1234</ParameterGroupName>
              <CreateTime>2019-11-21T01:42:38Z</CreateTime>
              <ParameterGroupDesc></ParameterGroupDesc>
              <ParamCounts>2</ParamCounts>
              <UpdateTime>2019-11-21T01:42:38Z</UpdateTime>
              <ForceRestart>1</ForceRestart>
              <EngineVersion>5.7</EngineVersion>
              <Engine>mysql</Engine>
              <ParameterGroupId>rpg-xxxxxxx</ParameterGroupId>
        </ParameterGroup>
  </ParameterGroups>
</DescribeParameterGroupsResponse>

JSON format 

{
    "RequestId": "D4A23265-C5B6-42E1-98A0-EFA1EB42E723",
    "ParameterGroups": {
        "ParameterGroup": [
            {
                "ParameterGroupType": 1,
                "ParameterGroupName": "testgroup123",
                "CreateTime": "2019-11-21T01:48:39Z",
                "ParameterGroupDesc": "",
                "ParamCounts": 2,
                "UpdateTime": "2019-11-21T01:48:39Z",
                "ForceRestart": 1,
                "EngineVersion": "5.7",
                "Engine": "mysql",
                "ParameterGroupId": "rpg-xxxxxxx"
            },
            {
                "ParameterGroupType": 1,
                "ParameterGroupName": "test1234",
                "CreateTime": "2019-11-21T01:42:38Z",
                "ParameterGroupDesc": "",
                "ParamCounts": 2,
                "UpdateTime": "2019-11-21T01:42:38Z",
                "ForceRestart": 1,
                "EngineVersion": "5.7",
                "Engine": "mysql",
                "ParameterGroupId": "rpg-xxxxxxx"
            }
        ]
    }
}

Error codes

For a list of error codes, visit the API Error Center.