You can call the DescribeAvailableResource operation to query the resources that are available to a region.

Note You can call this operation up to 20 times within 1 minute.

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 DescribeAvailableResource

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

InstanceChargeType String Yes Postpaid

The billing method of the resources. Valid values:

  • Prepaid: subscription
  • Postpaid: pay-as-you-go
RegionId String No cn-hangzhou

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

ZoneId String No cn-hangzhou-b

The ID of the zone to which the resources belong. If you specify more than one zone ID, you can separate these zone IDs with colons (:).

Engine String No MySQL

The database engine that is supported for the resources. Valid values:

  • MySQL
  • SQLServer
  • PostgreSQL
  • PPAS
  • MariaDB
EngineVersion String No 5.7

The version of the database engine that is supported for the resources. Valid values:

  • MySQL: 5.5, 5.6, 5.7, and 8.0.
  • SQL Server: 2008r2, 2012, 2012_ent_ha, 2012_std_ha, 2012_web, 2014_std_ha, 2016_ent_ha, 2016_std_ha, 2016_web, 2017_ent, and 2019_ent
  • PostgreSQL: 9.4 and 10.0
  • PPAS: 9.3 and 10.0
  • MariaDB: 10.3
DBInstanceClass String No rds.mysql.s1.small

The instance type of the resources. For more information, see Primary instance types.

OrderType String No BUY

The type of order that is supported for the resources. Set the value to BUY.

DBInstanceStorageType String No local_ssd

The type of storage media to query. Valid values:

  • local_ssd: local SSD
  • cloud_ssd: standard SSD
  • cloud_essd: enhanced SSD
  • cloud_essd2: enhanced PL2 SSD
  • cloud_essd3: enhanced PL3 SSD
Category String No Basic

The RDS edition that is supported for the resources. Valid values:

  • Basic: Basic Edition
  • HighAvailability: High-availability Edition
  • AlwaysOn: Cluster Edition
  • Finance: Enterprise Edition
DispenseMode Integer No 0

Specifies whether to return the zones in which the single-zone deployment method is supported. Valid values:

  • 1: returns the zones in which support the single-zone deployment method is supported.
  • 0: does not return the zones in which the single-zone deployment method is supported.

Default value: 0.

Note The single-zone deployment method allows you to deploy an instance that runs RDS Enterprise Edition in a single zone.

Response parameters

Parameter Type Example Description
AvailableZones Array of AvailableZone

An array that consists of zones in which resources are available.

AvailableZone
RegionId String cn-hangzhou

The ID of the region.

Status String Enable

Indicates whether the resources in the region can be purchased. Valid values:

  • Enable: The resources in the region can be purchased.
  • Disable: The resources in the region cannot be purchased.
SupportedEngines Array of SupportedEngine

An array that consists of available database engines.

SupportedEngine
Engine String MySQL

The available database engine.

SupportedEngineVersions Array of SupportedEngineVersion

An array that consists of the available database engine versions.

SupportedEngineVersion
SupportedCategorys Array of SupportedCategory

An array that consists of available RDS editions.

SupportedCategory
Category String HighAvailability

The available RDS edition.

SupportedStorageTypes Array of SupportedStorageType

An array that consists of available storage types.

SupportedStorageType
AvailableResources Array of AvailableResource

An array that consists of available resources.

AvailableResource
DBInstanceClass String rds.mysql.s1.small

The available instance type.

DBInstanceStorageRange Struct

An array that consists of the ranges of available storage capacity.

Max Integer 2000

The maximum storage capacity that you can purchase. Unit: GB.

Min Integer 5

The minimum storage capacity that you must purchase. Unit: GB.

Step Integer 5

The increment at which the storage capacity increases. Unit: GB.

StorageRange String "{\"values\":[{\"max\":2000,\"min\":5,\"step\":5}]}"

The range of the available storage capacity. The range specifies the maximum and minimum storage capacities. The capacity can be adjusted at the specified increment.

StorageType String local_ssd

The available storage type.

Version String 5.7

The database engine version that is available.

ZoneId String cn-hangzhou-b

The ID of the zone.

RequestId String A32E046E-2643-4B65-828D-23FEED4853A3

The ID of the request.

Examples

Sample requests

http(s)://rds.aliyuncs.com/?Action=DescribeAvailableResource
&InstanceChargeType=Postpaid
&<Common request parameters>

Sample success responses

XML format 

<RequestId>A32E046E-2643-4B65-828D-23FEED4853A3</RequestId>
<AvailableZones>
    <AvailableZone>
        <Status>Enable</Status>
        <ZoneId>cn-hangzhou-b</ZoneId>
        <RegionId>cn-hangzhou</RegionId>
        <SupportedEngines>
            <SupportedEngine>
                <Engine>MySQL</Engine>
                <SupportedEngineVersions>
                    <SupportedEngineVersion>
                        <Version>5.7</Version>
                        <SupportedCategorys>
                            <SupportedCategory>
                                <Category>HighAvailability</Category>
                                <SupportedStorageTypes>
                                    <SupportedStorageType>
                                        <StorageType>local_ssd</StorageType>
                                        <AvailableResources>
                                            <AvailableResource>
                                                <DBInstanceClass>rds.mysql.s1.small</DBInstanceClass>
                                                <StorageRange>"{\"values\":[{\"max\":2000,\"min\":5,\"step\":5}]}"</StorageRange>
                                                <DBInstanceStorageRange>
                                                    <Min>5</Min>
                                                    <Max>2000</Max>
                                                    <Step>5</Step>
                                                </DBInstanceStorageRange>
                                            </AvailableResource>
                                        </AvailableResources>
                                    </SupportedStorageType>
                                </SupportedStorageTypes>
                            </SupportedCategory>
                        </SupportedCategorys>
                    </SupportedEngineVersion>
                </SupportedEngineVersions>
            </SupportedEngine>
        </SupportedEngines>
    </AvailableZone>
</AvailableZones>

JSON format 

{"RequestId":"A32E046E-2643-4B65-828D-23FEED4853A3","AvailableZones":{"AvailableZone":[{"Status":"Enable","ZoneId":"cn-hangzhou-b","RegionId":"cn-hangzhou","SupportedEngines":{"SupportedEngine":[{"Engine":"MySQL","SupportedEngineVersions":{"SupportedEngineVersion":[{"Version":"5.7","SupportedCategorys":{"SupportedCategory":[{"Category":"HighAvailability","SupportedStorageTypes":{"SupportedStorageType":[{"StorageType":"local_ssd","AvailableResources":{"AvailableResource":[{"DBInstanceClass":"rds.mysql.s1.small","StorageRange":"\"{\\\"values\\\":[{\\\"max\\\":2000,\\\"min\\\":5,\\\"step\\\":5}]}\"","DBInstanceStorageRange":{"Min":"5","Max":"2000","Step":"5"}}]}}]}}]}}]}}]}}]}}

Error codes

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