首页 DescribeInstanceAttachmentAttributes

DescribeInstanceAttachmentAttributes

更新时间: 2026-05-14 11:19:11

Queries the information about the private pools that Elastic Compute Service (ECS) instances match.

Operation description

Usage notes

After an elasticity assurance or a capacity reservation is created, a private pool is generated and associated with information about the instances that are created by using the private pool. You can specify a private pool when you create an instance. This way, the instance matches the elasticity assurance or capacity reservation that is associated with the private pool.

When a private pool expires, data related to the association between instances and the private pool becomes invalid. If you call this operation to query information about the private pool, empty values are returned.

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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

ecs:DescribeInstanceAttachmentAttributes

get

*Instance

acs:ecs:{#regionId}:{#accountId}:instance/{#instanceId}

None None

Request parameters

Parameter

Type

Required

Description

Example

RegionId

string

Yes

The region ID of the elasticity assurance. You can call the DescribeRegions operation to query the most recent region list.

cn-hangzhou

InstanceIds

string

Yes

The IDs of the instances. The value can be a JSON array that consists of up to 100 instance IDs. Separate the IDs with commas (,).

["i-bp67acfmxazb4****", "i-bp67acfmxazb5****", "i-bp67acfmxazb6****"]

PageNumber

integer

No

The page number.

Page starts from page 1.

Default value: 1.

1

PageSize

integer

No

The number of entries per page.

Valid values: 1 to 100.

Default value: 10.

10

Response elements

Element

Type

Description

Example

object

PageSize

integer

The number of entries per page.

10

RequestId

string

The request ID.

473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E

PageNumber

integer

The page number.

1

TotalCount

integer

The total number of entries returned.

1

Instances

object

Instance

array<object>

The information about the association between private pools and instances.

object

The information about the association between the private pool and the instance.

InstanceId

string

The ID of the instance.

i-bp67acfmxazb4****

PrivatePoolOptionsMatchCriteria

string

The match mode of the private pool. Valid values:

  • Open: open private pool. Instances automatically match an open private pool.

  • Target: specified private pool. Instances match a specified private pool.

  • None: no private pool. Instances do not use private pools.

Open

PrivatePoolOptionsId

string

The ID of the private pool. If the value of PrivatePoolOptionsMatchCriteria is Open, the value of PrivatePoolOptionsId is the ID of the private pool that is automatically matched to the instance.

eap-bp67acfmxazb4****

Examples

Success response

JSON format

{
  "PageSize": 10,
  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E",
  "PageNumber": 1,
  "TotalCount": 1,
  "Instances": {
    "Instance": [
      {
        "InstanceId": "i-bp67acfmxazb4****",
        "PrivatePoolOptionsMatchCriteria": "Open",
        "PrivatePoolOptionsId": "eap-bp67acfmxazb4****"
      }
    ]
  }
}

Error codes

HTTP status code

Error code

Error message

Description

400 MissingParameter.RegionId The specified RegionId should not be null. The RegionId parameter is required.
400 DedicatedHostNotSupported DedicatedHost is not supported for PrivatePool. The private pool does not support dedicated hosts.
400 SpotNotSupported Spot is not supported for PrivatePool. The private pool does not support spot instances.
400 ClassicNetworkNotSupported Classic network is not supported for PrivatePool. The private pool does not support instances in the classic network.
400 Invalid.InstanceId Instance does not exist. The specified instance does not exist.
400 Invalid.PrivatePoolOptions.MatchCriteria Target mode does not support this operation. The operation is not supported while the PrivatePoolOptions.MatchCriteria parameter is set to Target.
400 MissingParameter.PrivatePoolOptions.Id The specified PrivatePoolOptions.Id should not be null. The PrivatePoolOptions.Id parameter is required.
400 Invalid.PrivatePoolOptions.Id The PrivatePool does not exist. The private pool does not exist.
400 Invalid.InstanceType The InstanceType does not match the PrivatePool. The instance type and the private pool do not match.
400 Invalid.InstanceChargeType The InstanceChargeType does not match the PrivatePool. The instance billing method and the private pool do not match.
400 Invalid.ZoneId The ZoneId does not match the PrivatePool. The zone and the private pool do not match.
400 Invalid.PrivatePoolOptions.status The PrivatePool has been used up. The resource is exhausted.
400 InvalidPlatform.ValueNotSupported The Platform does not match the PrivatePool. The specified Platform parameter does not match the private pool.
400 InvalidAliUid The PrivatePool does not belong to the user of the Instance. The specified private pool does not belong to the user who attempted to create the instance.
400 MissingParameter.PackageType The specified parameter "PackageType" can not be empty.
400 MissingParameter.PrivatePoolOptions.Ids The specified parameter "PrivatePoolOptions.Ids" can not be empty. Specifies that the parameter "PrivatePoolOptions.ids" cannot be empty.
400 MissingParameter.InstanceCpuCoreCount The specified parameter "InstanceCpuCoreCount" can not be empty. The specified parameter 'InstanceCpuCocount' cannot be empty.
400 MissingParameter.InstanceAmount The specified parameter "InstanceAmount" can not be empty. The specified parameter InstanceAmount cannot be empty.
400 MissingParameter.InstanceCpuCoreCountOrInstanceAmount The specified parameter "InstanceCpuCoreCount" and "InstanceAmount" must not be empty at the same time. The specified parameter InstanceCpuCoreCount and InstanceAmount cannot be both empty.
400 Invalid.TooManyPrivatePoolOptions.Ids Too many PrivatePoolOptions.Ids in this request. The number of specified private pool IDs exceeds the upper limit.
400 Invalid.TooManyZoneIds Too many ZoneIds in the request. The number of specified zone IDs exceeds the upper limit.
400 Invalid.TooManyInstanceTypes Too many InstanceTypes in the request. The number of specified instance types exceeds the upper limit.
400 Invalid.TooManyUnpaidPrivatePool Too many PrivatePools create but still unpaid. Multiple private pools are created but not paid.
400 Invalid.InstanceCpuCoreCountOrInstanceAmount Both InstanceCpuCoreCount and InstanceAmount are provided. The InstanceCpuCoreCount and InstanceAmount parameters cannot be both specified.
400 Invalid.PrivatePoolOptions.Ids The specified parameter "PrivatePoolOptions.Ids" exist invalid element Id. The specified private pool ID does not exist.
400 Invalid.PackageType The specified parameter "PackageType" is invalid. The specified parameter PackageType is invalid.
400 Invalid.PrivatePool.Purchase The PrivatePool has already paid. The private pool is already paid.
400 Invalid.AssuranceTimes.NotSupported The value of AssuranceTimes is not supported. The specified AssuranceTimes parameter is invalid.
400 RepeatStartPrivatePool PrivatePool has already been started. The private pool is already started.
500 InvalidParameter Invalid parameters.
500 InternalError The request processing has failed due to some unknown error, exception or failure. An internal error has occurred. Try again later.
403 InvalidParameter.TooManyInstanceIds Instance ids cannot be more than 100. InstanceIds cannot be more than 100.
403 Abs.InvalidInstanceIds.MalFormed The specified InstanceIds is not valid. The specified InstanceIds is not valid.
404 InvalidInstanceIds.NotFound The specified InstanceIds does not exist. The specified InstanceId parameter does not exist. You can call the DescribeInstances operation to query the state of the instance.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.

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