Queries available resources within a specific zone when you upgrade or downgrade instance types or replace system disks.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes DescribeResourcesModification

The operation that you want to perform. Set the value to DescribeResourcesModification.

RegionId String Yes cn-hangzhou

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

ResourceId String Yes i-bp67acfmxazb4p****

The ID of the resource. For example, when DestinationResource is set to InstanceType, this parameter can be interpreted as InstanceId.

MigrateAcrossZone Boolean No true

Specifies whether to support cross-cluster instance type upgrades. Valid values:

  • true: supports cross-cluster instance type upgrades.
  • false: does not support cross-cluster instance type upgrades.

Default value: false.

When the MigrateAcrossZone parameter is set to true and you upgrade the instance type of the Elastic Compute Service (ECS) instance based on returned information, take note of the following items:

  • Instances that reside in the classic network:
    • For retired instance types, when a non-I/O-optimized instance is upgraded to an I/O-optimized instance, the private IP address, disk device names, and software authorization codes of the instance change. For Linux instances, basic disks (cloud) are identified by the prefix xvd. Ultra disks (cloud_efficiency) and standard SSDs (cloud_ssd) are identified by the prefix vd.
    • For instance families available for purchase, when the instance type of an instance is changed, the private IP address of the instance changes.
  • Instances that reside in virtual private clouds (VPCs): For retired instance types, when a non-I/O-optimized instance is upgraded to an I/O-optimized instance, the disk device names and software authorization codes of the instance change. For Linux instances, basic disks (cloud) are identified by the prefix xvd. Ultra disks (cloud_efficiency) and standard SSDs (cloud_ssd) are identified by the prefix vd.
DestinationResource String Yes InstanceType

The type of the resource. Valid values:

  • InstanceType
  • SystemDisk
OperationType String No Upgrade

The operation of changing resource configurations.

  • Valid values for subscription resources:
    • Upgrade
    • Downgrade
    • RenewDowngrade
    • RenewModify
  • Valid values for pay-as-you-go resources: Upgrade

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

The instance type. For more information, see Instance families or call the DescribeInstanceTypes operation to query the most recent instance type list. This parameter is required when the DestinationResource parameter is set to SystemDisk.

Cores Integer No 2

The number of vCPU cores of the instance type. For more information, see Instance families. This parameter is valid only when DestinationResource is set to InstanceType.

Memory Float No 8.0

The memory size of the instance type. Unit: GiB. For more information, see Instance families. This parameter is valid only when DestinationResource is set to InstanceType.

ZoneId String No cn-hangzhou-e

The ID of the zone to query.

Response parameters

Parameter Type Example Description
RequestId String 473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E

The ID of the request.

AvailableZones Array of AvailableZone

Details about the available zones.

AvailableZone
ZoneId String cn-hangzhou-e

The ID of the zone.

Status String Available

The state of the resource. Valid values:

  • Available
  • SoldOut
StatusCategory String WithStock

The category of resource based on stock status. Valid values:

  • WithStock: resources that are in sufficient stock
  • ClosedWithStock: resources that are in insufficient stock
  • WithoutStock: resources that are out of stock
RegionId String cn-hangzhou

The region ID of the zone.

AvailableResources Array of AvailableResource

Details about the resources available in the zone.

AvailableResource
Type String InstanceType

The type of resource. Valid values:

  • Zone
  • IoOptimized
  • InstanceType
  • SystemDisk
  • DataDisk
  • Network
SupportedResources Array of SupportedResource

Details about the resources.

SupportedResource
Status String Available

The state of the resource. Valid values:

  • Available
  • SoldOut
Value String ecs.g5.large

The resource value.

Max Integer 2

The maximum resource specification value. This parameter is not returned if it has no value.

Unit String null

The resource specification unit. This parameter is not returned if it has no value.

StatusCategory String WithStock

The category of resource based on stock status. Valid values:

  • WithStock: resources that are in sufficient stock
  • ClosedWithStock: resources that are ininsufficient stock
  • WithoutStock: resources that are out of stock
Min Integer 1

The minimum resource specification value. This parameter is not returned if it has no value.

Examples

Sample requests

http(s)://ecs.aliyuncs.com/?Action=DescribeResourcesModification
&DestinationResource=InstanceType
&RegionId=cn-hangzhou
&ResourceId=i-bp67acfmxazb4p****
&MigrateAcrossZone=true
&OperationType=Upgrade
&InstanceType=ecs.g5.large
&Common request parameters

Sample success responses

XML format 

HTTP/1.1 200 OK
Content-Type:application/xml

<DescribeResourcesModificationResponse>
    <RequestId>994F2B60-B050-49E3-9283-44655FAC7A4X</RequestId>
    <AvailableZones>
        <AvailableZone>
            <Status>Available</Status>
            <RegionId>cn-hangzhou</RegionId>
            <AvailableResources>
                <AvailableResource>
                    <Type>InstanceType</Type>
                    <SupportedResources>
                        <SupportedResource>
                            <Status>Available</Status>
                            <Value>ecs.g5.xlarge</Value>
                        </SupportedResource>
                        <SupportedResource>
                            <Status>Available</Status>
                            <Value>ecs.t5-lc1m2.large</Value>
                        </SupportedResource>
                        <SupportedResource>
                            <Status>Available</Status>
                            <Value>ecs.t5-c1m4.2xlarge</Value>
                        </SupportedResource>
                        <SupportedResource>
                            <Status>Available</Status>
                            <Value>ecs.c5.xlarge</Value>
                        </SupportedResource>
                    </SupportedResources>
                </AvailableResource>
            </AvailableResources>
            <ZoneId>cn-hangzhou-e</ZoneId>
        </AvailableZone>
    </AvailableZones>
</DescribeResourcesModificationResponse>

JSON format 

HTTP/1.1 200 OK
Content-Type:application/json

{
  "RequestId" : "994F2B60-B050-49E3-9283-44655FAC7A4X",
  "AvailableZones" : {
    "AvailableZone" : [ {
      "Status" : "Available",
      "RegionId" : "cn-hangzhou",
      "AvailableResources" : {
        "AvailableResource" : [ {
          "Type" : "InstanceType",
          "SupportedResources" : {
            "SupportedResource" : [ {
              "Status" : "Available",
              "Value" : "ecs.g5.xlarge"
            }, {
              "Status" : "Available",
              "Value" : "ecs.t5-lc1m2.large"
            }, {
              "Status" : "Available",
              "Value" : "ecs.t5-c1m4.2xlarge"
            }, {
              "Status" : "Available",
              "Value" : "ecs.c5.xlarge"
            } ]
          }
        } ]
      },
      "ZoneId" : "cn-hangzhou-e"
    } ]
  }
}

Error codes

HTTP status code Error code Error message Description
400 Invalid.OperationType The specified operationType is not valid. The error message returned because the specified OperationType 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.
400 Invalid.InstanceChargeType The specified InstanceChargeType is not valid. The error message returned because the specified instance billing method is invalid.
403 InvalidDedicatedHostId.NotFound The specified DedicatedHostId does not exist in our records. The error message returned because the specified dedicated host does not exist within the current region.
404 Invalid.RegionId The specified RegionId does not exist. The error message returned because the specified RegionId parameter is invalid.
404 Invalid.ResourceType The ResourceType provided does not exist in our records. The error message returned because the specified resource type 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.
404 Invalid.ResourceId The specified ResourceId is not valid. The error message returned because the specified ResourceId parameter is invalid.
404 Invalid.InstancePayType The specified InstancePayType is not valid. The error message returned because the specified instance billing method is invalid.
404 OperationDenied The specified operation is denied as this instanceType is not support. The error message returned because the instance type does not support the operation.
404 InvalidInstanceId.NotFound The specified InstanceId provided does not exist in our records. The error message returned because the specified instance ID does not exist. Check whether the instance ID is correct.
404 InvalidResourceId.NotFound The specified ResourceId is not found in our records. The error message returned because the specified ResourceId parameter does not exist. Check whether the resource ID is correct.

For a list of error codes, visit the API Error Center.