Updated on 2026-03-16 GMT+08:00

Querying the Kernel Version

Function

This API is used to query the kernel version of a DB instance. Before calling this API:

Learn how to authenticate it.
Obtain the required region and endpoint.

URI

GET /v3/{project_id}/instances/{instance_id}/database-version

**Table 1** URI parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Definition Project ID of a tenant in a region. To obtain this value, see Obtaining a Project ID. Constraints N/A Range The value contains 32 characters. Only letters and digits are allowed. Default Value N/A
instance_id	Yes	String	Definition Instance ID, which uniquely identifies an instance. Constraints N/A Range The value contains 36 characters with a suffix of in07. Only letters and digits are allowed. Default Value N/A

Request Parameters

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	Definition User token. To obtain this value, call the IAM API for obtaining a user token. The value of X-Subject-Token in the response header is the token value. Constraints N/A Range N/A Default Value N/A
X-Language	No	String	Definition Request language type. Constraints N/A Range en-us zh-cn Default Value en-us

Response Parameters

Status code: 200

**Table 3** Response body parameters
Parameter	Type	Description
datastore	InstanceDatabaseVersionInfo object	Definition DB version information.
upgrade_flag	Boolean	Definition Whether the version can be upgraded. Range true: The version can be upgraded. false: The version cannot be upgraded.

**Table 4** InstanceDatabaseVersionInfo
Parameter	Type	Description
current_version	String	Definition Current database version. Range N/A
current_kernel_version	String	Definition Current database kernel version. Range N/A
latest_version	String	Definition Latest database version. Range N/A
latest_kernel_version	String	Definition Latest database kernel version. Range N/A

Status code: 400

**Table 5** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Status code: 500

**Table 6** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Example Request

Querying the kernel version

GET https://{endpoint}/v3/97b026aa9cc4417888c14c84a1ad9860/instances/61a4ea66210545909d74a05c27a7179ein07/database-version

Example Response

Status code: 200

Success.

{
  "datastore" : {
    "current_version" : "8.0.22",
    "current_kernel_version" : "2.0.28.15",
    "latest_version" : "8.0.22",
    "latest_kernel_version" : "2.0.42.230600"
  },
  "upgrade_flag" : true
}

Status Code

For details, see Status Codes.

Error Code

For details, see Error Codes.

Parent topic: Instance Management