ModifyDBNodeClass - PolarDB - Alibaba Cloud Documentation Center

Changes the node specifications of a PolarDB cluster.

Try it now

Try this API in OpenAPI Explorer, no manual signing needed. Successful calls auto-generate SDK code matching your parameters. Download it with built-in credential security for local usage.

Test

RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

polardb:ModifyDBNodeClass

update

*DBCluster

acs:polardb:{#regionId}:{#accountId}:{#resource-type}/{#resource-id}

None

Request parameters

Parameter	Type	Required	Description	Example
DBClusterId	string	Yes	The cluster ID.	pc-*************
ModifyType	string	Yes	The type of the change. Valid values: Upgrade: Upgrades the node specifications. Downgrade: Downgrades the node specifications.	Upgrade
DBNodeTargetClass	string	Yes	The target specifications for all nodes. For more information, see Compute node specifications.	polar.mysql.x4.large
ClientToken	string	No	A client token to ensure the idempotence of the request. The client generates this value. It must be unique for each request. The token is case-sensitive and cannot exceed 64 ASCII characters.	6000170000591aed949d0f54a343f1a4233c1e7d1c5c******
PlannedStartTime	string	No	The earliest time to start the scheduled upgrade or downgrade task. Specify the time in the `YYYY-MM-DDThh:mm:ssZ` format. The time is in UTC. Note This parameter takes effect only when you set `ModifyType` to `Upgrade` or `Downgrade`. The start time must 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 start time that is between `2021-01-14T09:00:00Z` and `2021-01-15T09:00:00Z`. If you leave this parameter empty, the upgrade or downgrade task is performed immediately.	2021-01-14T09:00:00Z
PlannedEndTime	string	No	The latest time to start the scheduled task. Specify the time in the `YYYY-MM-DDThh:mm:ssZ` format. The time is in UTC. Note The latest start time must be at least 30 minutes later than the earliest start time. If you specify `PlannedStartTime` but not this parameter, the latest start time of the task is `PlannedStartTime + 30 minutes` by default. For example, if you set `PlannedStartTime` to `2021-01-14T09:00:00Z` and leave this parameter empty, the task starts no later than `2021-01-14T09:30:00Z`.	2021-01-14T09:30:00Z
SubCategory	string	No	The subcategory of the cluster. Valid values: normal_exclusive: Dedicated normal_general: General-purpose This parameter is required if you change the specifications between Dedicated and General-purpose.	normal_general
DBNodeType	string	No	The node type. This parameter is required and must be set to DLNode only when you modify the specifications of an AI node. Valid values: DLNode : AI node	DLNode
PlannedFlashingOffTime	string	No
CloudProvider	string	No		ENS

Response elements

Element	Type	Description	Example
	object
RequestId	string	The request ID.	685F028C-4FCD-407D-A559-072D63******
DBClusterId	string	The database cluster ID.	pc-*************
OrderId	string	The order ID.	2035629******

Examples

Success response

JSON format

{
  "RequestId": "685F028C-4FCD-407D-A559-072D63******",
  "DBClusterId": "pc-*************",
  "OrderId": "2035629******"
}

Error codes

HTTP status code	Error code	Error message	Description
400	ORDER.ARREARAGE	您有欠费账单，不符合购买条件，请先结清账单后再购买	You must settle the overdue payments for your account before you can make a purchase.
400	InsufficientResourceCapacity	The resource is insufficient.	Insufficient resources.
400	InvalidModifyType.Malformed	The specified parameter ModifyType is not valid.	The specified ModifyType parameter is invalid.
403	OperationDenied.RoEqualSpec	must exist at least ro class equal with rw	The number of read-only nodes must be equal to or greater than that of primary nodes.
403	OperationDenied.DBClusterStatus	The operation is not permitted due to status of cluster.	The PolarDB cluster does not support this operation in the current state.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.