You can call this operation to query resources in a zone. For example, you can query resources before creating an ECS instance (RunInstances) or modifying instance specifications (ModifyInstanceSpec) in a zone.

Description

When you call this operation, note that:

  • When the ZoneId parameter is not specified, the system returns the resources that match the other criteria of all zones within the region.
  • You can specify the DestinationResource parameter to retrieve different types of resources, and specify other parameters to refine your search. Options for the DestinationResource parameter have dependencies. When you select an option in the following chain, the options to the left of this option are all required.
    • Sequence: (Zone) > IoOptimized > InstanceType > SystemDisk > DataDisk
    • For example:
      • If you set the DestinationResource parameter to SystemDisk, you must specify the IoOptimized and InstanceType parameters.
      • If you set the DestinationResource parameter to InstanceType, you must specify the IoOptimized parameter.
      • If you set the DestinationResource parameter to DataDisk, you must specify the IoOptimized, InstanceType, and SystemDiskCategory parameters.

Debugging

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Request parameters

Parameter Type Required Example Description
DestinationResource String Yes InstanceType

The resource types to be queried. Valid values:

  • Zone
  • IoOptimized
  • InstanceType
  • SystemDisk
  • DataDisk
  • Network
RegionId String Yes cn-hangzhou

The ID of the region for which to query resources. You can call the DescribeRegions operation to query the latest region list.

Action String No DescribeAvailableResource

The operation that you want to perform. For API requests using the HTTP and HTTPS methods, Action is required. Set the value to DescribeAvailableResource.

Cores Integer No 2

The number of vCPU cores of the instance type. For more information, see Instance type families.

The Cores parameter is valid only when the DestinationResource parameter is set to InstanceType.

DataDiskCategory String No cloud_ssd

The category of the data disk. Valid values:

  • cloud
  • cloud_efficiency: ultra disk
  • cloud_ssd: standard SSD
  • ephemeral_ssd: local SSD
  • cloud_essd: enhanced SSD
DedicatedHostId String No dh-dedicatedhostid

The ID of the DDH.
InstanceChargeType String No PrePaid

The billing method of resources. For more information, see Billing overview. Valid values:

  • PrePaid: subscription
  • PostPaid: pay-as-you-go

Default value: PostPaid
InstanceType String No ecs.g5.large

The type of the instance. For more information, see Instance type families or call the DescribeInstanceTypes operation to query the latest instance type list.

When the DestinationResource parameter is set to SystemDisk or DataDisk, the InstanceType parameter is required.

IoOptimized String No optimized

Specifies whether the instance is I/O optimized. Valid values:

  • none
  • optimized

When the DestinationResource parameter is set to InstanceType, SystemDisk, or DataDisk, the IoOptimized parameter is required. Default value: optimized.

Memory Float No 8.0

The memory size of the instance type. Unit: GiB. For more information, see Instance type families.

The Memory parameter is valid only when the DestinationResource parameter is set to InstanceType.

NetworkCategory String No vpc

The type of the network. Valid values:

  • vpc
  • classic
ResourceType String No Instance

The type of the resource. Valid values:

  • instance
  • disk
  • reservedinstance
  • ddh
SpotStrategy String No NoSpot

The bidding policy for the pay-as-you-go instance. Valid values:

  • NoSpot: pay-as-you-go instance
  • SpotWithPriceLimit: preemptible instance with the maximum price
  • SpotAsPriceGo: price automatically provided by the system with the pay-as-you-go instance price as the maximum value

Default value: NoSpot

The SpotStrategy parameter is valid only when the InstanceChargeType parameter is set to PostPaid.

SystemDiskCategory String No cloud_ssd

The category of the system disk. Valid values:

  • cloud
  • cloud_efficiency: ultra disk
  • cloud_ssd: standard SSD
  • ephemeral_ssd: local SSD
  • cloud_essd: enhanced SSD

When the DestinationResource parameter is set to SystemDisk, InstanceType, or DataDisk, the SystemDiskCategory parameter is optional. Default value: cloud_efficiency.

ZoneId String No cn-hangzhou-e

The ID of the zone for which to query resources.

When the ZoneId parameter is not specified, the system returns resources that match the other criteria of all zones within the region.

Response parameters

Parameter Type Example Description
AvailableZones

An array of zone types.
  └AvailableResources

An array of available resource types.
    └SupportedResources

An array of supported resource types.
      └Max Integer 2

The maximum number of resources of a specific type that can be created. No value is returned when this parameter is null.

      └Min Integer 1

The minimum value of resources of a specific type that can be created. No value is returned when the parameter is null.

      └Status String Available

The type of the resource. Valid values:

  • Available
  • SoldOut
      └StatusCategory String WithStock

The resource category based on the stock. Valid values:

  • WithStock: sufficient stock
  • ClosedWithStock: insufficient stock
  • WithoutStock: running out of stock
      └Unit String null

The unit of the resource type. No value is returned when the parameter is null.
      └Value String ecs.d1ne.xlarge

The value of the resource.
    └Type String InstanceType

The type of the resource. Valid values:

  • Zone
  • IoOptimized
  • InstanceType
  • SystemDisk
  • DataDisk
  • Network
  └RegionId String cn-hangzhou

The ID of the region.
  └Status String Available

The type of the resource. Valid values:

  • Available
  • SoldOut
  └StatusCategory String WithStock

The resource category based on the stock. Valid values:

  • WithStock: sufficient stock
  • ClosedWithStock: insufficient stock
  • WithoutStock: running out of stock
  └ZoneId String cn-hangzhou-e

The ID of the zone.
RequestId String 473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E

The ID of the request.

Examples

Sample requests

https://ecs.aliyuncs.com/?Action=DescribeAvailableResource
&DestinationResource=InstanceType
&RegionId=cn-hangzhou
&InstanceChargeType=PrePaid
&SpotStrategy=NoSpot
&ZoneId=cn-hangzhou-e
&IoOptimized=optimized
&DedicatedHostId=dh-dedicatedhostid
&InstanceType="ecs.g5.large"
&SystemDiskCategory=cloud_ssd
&DataDiskCategory=cloud_ssd
&NetworkCategory=vpc
&Cores=2
&Memory=8.0
&ResourceType=Instance
&<Common request parameters>

Sample success responses

XML format 

<DescribeAvailableResourceResponse>
  <RequestId>5272B7D8-F366-4781-AF7B-63E735FBC09A</RequestId>
  <AvailableZones>
    <AvailableZone>
      <Status>Available</Status>
      <RegionId>cn-hangzhou</RegionId>
      <ZoneId>cn-hangzhou-h</ZoneId>
    </AvailableZone>
    <AvailableZone>
      <Status>Available</Status>
      <RegionId>cn-hangzhou</RegionId>
      <ZoneId>cn-hangzhou-g</ZoneId>
    </AvailableZone>
    <AvailableZone>
      <Status>Available</Status>
      <RegionId>cn-hangzhou</RegionId>
      <ZoneId>cn-hangzhou-f</ZoneId>
    </AvailableZone>
    <AvailableZone>
      <Status>Available</Status>
      <RegionId>cn-hangzhou</RegionId>
      <ZoneId>cn-hangzhou-b</ZoneId>
    </AvailableZone>
    <AvailableZone>
      <Status>Available</Status>
      <RegionId>cn-hangzhou</RegionId>
      <ZoneId>cn-hangzhou-e</ZoneId>
    </AvailableZone>
  </AvailableZones>
</DescribeAvailableResourceResponse>

JSON format 

{
	"RequestId":"5272B7D8-F366-4781-AF7B-63E735FBC09A",
	"AvailableZones":{
		"AvailableZone":[
			{
				"Status":"Available",
				"RegionId":"cn-hangzhou",
				"ZoneId":"cn-hangzhou-h"
			},
			{
				"Status":"Available",
				"RegionId":"cn-hangzhou",
				"ZoneId":"cn-hangzhou-g"
			},
			{
				"Status":"Available",
				"RegionId":"cn-hangzhou",
				"ZoneId":"cn-hangzhou-f"
			},
			{
				"Status":"Available",
				"RegionId":"cn-hangzhou",
				"ZoneId":"cn-hangzhou-b"
			},
			{
				"Status":"Available",
				"RegionId":"cn-hangzhou",
				"ZoneId":"cn-hangzhou-e"
			}
		]
	}
}

Error codes

HTTP status code Error code Error message Description
404 Invalid.RegionId The specified RegionId does not exist. The error message returned because the specified RegionId parameter is invalid.
404 Unavailable.Regions The available regions does not exists The error message returned because the specified RegionId parameter is invalid.
400 Invalid.InstanceChargeType The specified InstanceChargeType is not valid. The error message returned because the specified InstanceChargeType parameter is invalid.
400 Invalid.Param The input parameter DestinationResource that is mandatory for processing this request is not supplied. The error message returned because the specified DestinationResource parameter is invalid.
404 Invalid.ResourceType The ResourceType provided does not exist in our records. The error message returned because the specified ResourceType parameter is invalid.
404 Invalid.DestinationResource The specified DestinationResource is not valid. The error message returned because the specified DestinationResource parameter is invalid.
404 Invalid.IoOptimized The specified IoOptimized is not valid. The error message returned because the specified IoOptimized parameter is invalid.
404 Invalid.NetworkCategory The specified NetworkCategory is not valid. The error message returned because the specified NetworkCategory parameter is invalid.
404 Invalid.SpotStrategy The specified SpotStrategy is not valid. The error message returned because the specified SpotStrategy parameter is invalid.
403 InvalidDedicatedHostId.NotFound The specified DedicatedHostId does not exist. The error message returned because the specified DDH ID does not exist.
404 Invalid.NetworkType The specified NetworkType is not valid. The error message returned because the specified NetworkType parameter is invalid.
404 InvalidResourceId.NotFound The specified ResourceId is not found in our records The error message returned because the specified ResourceId parameter is invalid.
403 InvalidParam.TypeAndCpuMem.Conflict The specified 'InstanceType' and 'Cores','Memory' are not blank at the same time. The error message returned because the specified InstanceType, Cores, and Memory parameters conflict with each other.
403 InvalidParam.Cores The specified parameter 'Cores' should be empty The error message returned because the specified Cores parameter is invalid.
403 InvalidParam.Memory The specified parameter 'Memory' should be empty The error message returned because the specified Memory parameter is invalid.
400 InvalidRegionId.MalFormed The specified parameter RegionId is not valid. The error message returned because the specified RegionId parameter is invalid.

View error codes