All Products
Search
Document Center

ENS:BatchEventMigrateInstance

Last Updated:Sep 04, 2026

Batch migrates instances under a specified event. Supports immediate or scheduled execution.

Operation description

Operation description

  • This O&M operation currently supports only the following event type: Instance:SystemUpgrade.Migrate (migration required due to underlying infrastructure upgrade).

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

ens:BatchEventMigrateInstance

none

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

EventInfos

array<object>

No

The list of events.

object

No

The event object.

EventId

string

Yes

The event ID, in the format of e-*.

e-d71ff150945b9c02eb6ebc0016328468

ResourceId

string

Yes

The resource ID, in the format of i-*.

i-55qi8m11rr53c4i964md8a00l

PlanTime

integer

No

The scheduled execution time. The value is a timestamp in milliseconds. This parameter is required when OpsType is set to scheduled.

1742452232000

OpsType

string

Yes

The O&M task type. Valid values:

  • immediate: immediate execution.

  • scheduled: scheduled execution.

immediate

DataPolicy

string

No

The data migration policy. Valid values:

  • abandon: Does not migrate data. This is the default value.

  • force_transfer: Performs forcible migration of EPS resource data.

  • try_transfer: Migrates data on a best-effort basis.

abandon

Password

string

No

The instance password. This parameter is optional. If you do not specify this parameter, a random password is used.

The password must be 8 to 30 characters in length and must contain uppercase letters, lowercase letters, and digits.

Note: Password specification is not supported for scheduled execution.

AAaa1234

PlanUtcTime

string

No

Response elements

Element

Type

Description

Example

object

The response parameters.

RequestId

string

The request ID.

FF53E96D-3F1A-42F0-8373-1C2B39D72D44

Results

array<object>

The list of results.

object

The result.

Code

integer

The status code.

200

EventId

string

The event ID.

e-d71ff150945b9c02eb6ebc0016328468

Message

string

The error message returned when Code is not 200.

success

ResourceId

string

The resource ID.

i-55qi8m11rr53c4i964md8a00l

Examples

Success response

JSON format

{
  "RequestId": "FF53E96D-3F1A-42F0-8373-1C2B39D72D44",
  "Results": [
    {
      "Code": 200,
      "EventId": "e-d71ff150945b9c02eb6ebc0016328468",
      "Message": "success",
      "ResourceId": "i-55qi8m11rr53c4i964md8a00l\n"
    }
  ]
}

Error codes

HTTP status code

Error code

Error message

Description

400 NoPermission Permission denied.
400 InvalidParameter.%s The specified field %s invalid. Please check it again.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.