You can call this operation to query the release notes of the minor database versions of a MongoDB instance.


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 No DescribeKernelReleaseNotes

The operation that you want to perform. Set the value to DescribeKernelReleaseNotes.

KernelVersion String No Mongodb_20180522_0.4.8

The number of the minor database version. For example: mongodb_20180522_0.4.8.

  • If you specify this parameter, a list of version numbers later than the version specified is returned.
  • If you do not specify this parameter, a list of all the version numbers is returned.
RegionId String No cn-hangzhou

The region ID. You can call DescribeRegions API to query.

Response parameters

Prameter Type Sample response Description
ReleaseNotes Array

The list of version release notes.


The list of version release notes.

KernelVersion String mongodb_20180619_0.4.9

The version number.

ReleaseNote String Released the balancer switch limit for a sharded set.

The release notes.

RequestId String F01D4DDA-CB72-4083-B399-AF4642294FE6

The ID of the request.


Sample requests

http(s):// Action=DescribeKernelReleaseNotes
&<Common request parameters>

Sample success response

XML format

			      <ReleaseNote>Released the balancer switch limit for a sharded set</ReleaseNote>

JSON format

				"ReleaseNote":"Released the balancer limit for a sharded set"

Error codes

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