Use DescribeElasticityAssuranceInstances to query ECS instances in an elasticity assurance - Elastic Compute Service - Alibaba Cloud - Elastic Compute Service

Queries the list of running instances that are matched to an elasticity assurance.

Operation description

After an elasticity assurance expires, the matching data between instances and the private pool associated with the elasticity assurance also becomes invalid. If you call this operation to query an expired elasticity assurance, an empty result is returned.

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

ecs:DescribeElasticityAssuranceInstances

get

*All Resource

*

None

Request parameters

Parameter	Type	Required	Description	Example
RegionId	string	Yes	The region ID of the elasticity assurance. You can call DescribeRegions to query the most recent region list.	cn-hangzhou
MaxResults	integer	No	The maximum number of entries per page for a paged query. Maximum value: 100. Default value: 10.	10
NextToken	string	No	The pagination token for the elasticity assurance query. Obtain the value from the result of the previous request.	caeba0bbb2be03f84eb48b699f0a4883
PrivatePoolOptions.Id	string	Yes	The ID of the elasticity assurance.	eap-bp67acfmxazb4****

Response elements

Element	Type	Description	Example
	object
ElasticityAssuranceItem	object
InstanceIdSet	array<object>	The list of instances matched to the elasticity assurance.
	object
InstanceId	string	The instance ID.	i-bp67acfmxazb4****
MaxResults	integer	The maximum number of entries per page in a paged query. This is the same value specified in the request for paging.	10
NextToken	string	The pagination token for the next query of the elasticity assurance.	caeba0bbb2be03f84eb48b699f0a4883
RequestId	string	The request ID.	473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E
TotalCount	integer	The total number of entries that match the query conditions.	2

Examples

Success response

JSON format

{
  "ElasticityAssuranceItem": {
    "InstanceIdSet": [
      {
        "InstanceId": "i-bp67acfmxazb4****"
      }
    ]
  },
  "MaxResults": 10,
  "NextToken": "caeba0bbb2be03f84eb48b699f0a4883",
  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E",
  "TotalCount": 2
}

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	InvalidParameter.PrivatePoolOptions.Id	The specified PrivatePoolOptions.Id is invalid.
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.	The PackageType parameter cannot 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	InternalError	The request processing has failed due to some unknown error, exception or failure.	An internal error has occurred. Try again later.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.