Changes the node specifications of a specified PolarDB cluster.

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 No ModifyDBNodeClass

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

DBClusterId String Yes pc-*************

The ID of the cluster.

DBNodeTargetClass String Yes polar.mysql.x4.large

The specifications of all nodes. For more information, see Specifications of computing nodes.

ModifyType String Yes Upgrade

The type of the configuration change. Valid values:

  • Upgrade
  • Downgrade
ClientToken String No 6000170000591aed949d0f54a343f1a4233c1e7d1c5c******

The client token that is used to ensure the idempotence of the request. You can use the client to generate the value, but you must ensure that it is unique among different requests. The token can only contain ASCII characters and cannot exceed 64 characters in length. The token is case-sensitive.

PlannedStartTime String No 2021-01-14T09:00:00Z

The earliest time to upgrade the specifications within the scheduled time period. Specify the time in the YYYY-MM-DDThh:mm:ssZ format. The time must be in UTC.

Note
  • This parameter takes effect only when ModifyType is set to Upgrade.
  • The earliest start time of the task can be a point in time within the next 24 hours. For example, if the current time is 2021-01-14T09:00:00Z, you can specify a point in the time range from 2021-01-14T09:00:00Z to 2021-01-15T09:00:00Z.
  • If this parameter is empty, the upgrade task is immediately performed.
PlannedEndTime String No 2021-01-14T09:30:00Z

The latest start time to run the task. Specify the time in the YYYY-MM-DDThh:mm:ssZ format. The time must be in UTC.

Note
  • The value of this parameter must be at least 30 minutes later than the value of the PlannedStartTime parameter.
  • If you specify the PlannedStartTime parameter but do not specify a value for the PlannedEndTime parameter, the latest start time of the task is set to a value that is calculated by the value of the PlannedEndTime parameter + 30 minutes by default. For example, if you set the PlannedStartTime parameter to 2021-01-14T09:00:00Z and you do not specify the PlannedEndTime parameter, the latest start time of the task is set to 2021-01-14T09:30:00Z.
SubCategory String No normal_general

The category of the cluster. Valid values:

  • normal_exclusive: dedicated
  • normal_general: genera-purpose

Response parameters

Parameter Type Example Description
DBClusterId String pc-*************

The ID of the PolarDB cluster.

OrderId String 2035629******

The ID of the order.

RequestId String 685F028C-4FCD-407D-A559-072D63******

The ID of the request.

Examples

Sample requests

http(s)://polardb.aliyuncs.com/?Action=ModifyDBNodeClass
&DBClusterId=pc-*************
&DBNodeTargetClass=polar.mysql.x4.large
&ModifyType=Upgrade
&<Common request parameters>

Sample success responses

XML format 

<ModifyDBNodeClassResponse>
  <RequestId>685F028C-4FCD-407D-A559-072D6378C4C3</RequestId>
  <OrderId>2035629******</OrderId>
  <DBClusterId>pc-**************</DBClusterId>
</ModifyDBNodeClassResponse>

JSON format 

{
	"RequestId": "685F028C-4FCD-407D-A559-072D6378C4C3",
	"OrderId": "2035629******",
	"DBClusterId": "pc-**************"
}

Error codes

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