ModifyDiskNumber - E-MapReduce - Alibaba Cloud Documentation Center

Operation description

Before you call this operation, make sure you fully understand the billing methods and billable items of Serverless StarRocks. Note the following:

The number of disks can be increased only for standard instances. This operation is not supported for entry-level instances.
The number of disks can be increased only for instances whose compute group is the Standard Edition (standard).
The instance must be in the Running state.

After you increase the number of disks, billing changes as follows:

Pay-as-you-go: You are billed based on the new disk type.
Subscription: A supplemental fee is calculated. This fee is based on the price difference between the old and new configurations and the remaining days in the billing cycle. The remaining period starts from 00:00 on the following day and ends when the subscription expires.

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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

sr:ModifyDiskNumber

get

*Instance

acs:sr:{#regionId}:{#accountId}:instance/{#InstanceId}

None

Request syntax

POST /webapi/resourceChange/modifyDiskNumber HTTP/1.1

Request parameters

Parameter	Type	Required	Description	Example
InstanceId	string	Yes	The instance ID.	c-b25e21e24388****
NodeGroupId	string	Yes	The compute group ID.	ng-3d5ce6454354****
Target	integer	Yes	The target number of disks.	3
FastMode	boolean	No	Specifies whether to restart the compute nodes in fast mode. Default value: false. true: Restarts the compute nodes in fast mode. The nodes are restarted in batches. Nodes within a batch are restarted in parallel, and the batches are processed sequentially. false: Restarts the compute nodes in rolling restart mode.	true
PromotionOptionNo	string	No

Response elements

Element	Type	Description	Example
	object
HttpStatusCode	integer	The HTTP status code.	200
RequestId	string	The request ID.	32A44F0D-BFF6-5664-999A-218BBDE7****
Success	boolean	Indicates whether the request was successful.	false
ErrCode	string	The error code.	InvalidParams
ErrMessage	string	The error message.	Invalid params: [instance not exists].
Data	integer	The order ID.	24151320976****
AccessDeniedDetail	string	Details about the access denial.	{ "PolicyType": "AccountLevelIdentityBasedPolicy", "AuthPrincipalOwnerId": "xxx", "EncodedDiagnosticMessage": "xxx", "AuthPrincipalType": "xxx", "AuthPrincipalDisplayName": "xxx", "NoPermissionType": "ImplicitDeny", "AuthAction": "sr:xxx" }

Examples

Success response

JSON format

{
  "HttpStatusCode": 200,
  "RequestId": "32A44F0D-BFF6-5664-999A-218BBDE7****",
  "Success": false,
  "ErrCode": "InvalidParams",
  "ErrMessage": "Invalid params: [instance not exists].",
  "Data": 0,
  "AccessDeniedDetail": "{     \"PolicyType\": \"AccountLevelIdentityBasedPolicy\",     \"AuthPrincipalOwnerId\": \"xxx\",     \"EncodedDiagnosticMessage\": \"xxx\",     \"AuthPrincipalType\": \"xxx\",     \"AuthPrincipalDisplayName\": \"xxx\",     \"NoPermissionType\": \"ImplicitDeny\",     \"AuthAction\": \"sr:xxx\"   }"
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.