PurchaseReservedInstancesOffering - API Reference| Alibaba Cloud Documentation Center

Description

Before you call this operation, make sure that you fully understand the billing method of reserved instances. For more information, see Reserved instances.
Before you purchase a reserved instance, you can call the DescribeAvailableResource operation to query available instance resources.

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	PurchaseReservedInstancesOffering	The operation that you want to perform. Set the value to PurchaseReservedInstancesOffering.
InstanceType	String	Yes	ecs.g5.large	The instance type of the instance. For more information, see Instance families.
RegionId	String	Yes	cn-hangzhou	The region ID of the instance. You can call the DescribeRegions operation to query the most recent region list.
Scope	String	No	Zone	The scope of the reserved instance. Valid values: Region: regional Zone: zonal Default value: Region.
ZoneId	String	No	cn-hangzhou-g	The zone ID of the instance. This parameter is required when `Scope` is set to `Zone`. For more information, call the DescribeZones operation to query the most recent zone list.
InstanceAmount	Integer	No	3	The number of pay-as-you-go instances of the same instance type that the reserved instance can match. Valid values: 1 to 50. For example, if InstanceAmount is set to 3 for an ecs.g5.large reserved instance, the reserved instance can match three ecs.g5.large pay-as-you-go instances.
Platform	String	No	Linux	The operating system of the image used by the instance. Default value: Linux. Valid values: Windows: Windows Server operating systems Linux: Linux and Unix-like operating systems
PeriodUnit	String	No	Year	The unit of the validity period of the reserved instance. Valid value: Year.
Period	Integer	No	1	The validity period of the reserved instance. Valid values: 1 and 3. Default value: 1.
OfferingType	String	No	All Upfront	The payment option of the reserved instance. Default value: All Upfront. Valid values: No Upfront Partial Upfront All Upfront
ReservedInstanceName	String	No	testReservedInstanceName	The name of the reserved instance. The name must be 2 to 128 characters in length. It must start with a letter and cannot start with http:// or https://. It can contain letters, digits, colons (:), underscores (_), and hyphens (-).
Description	String	No	testDescription	The description of the reserved instance. The description must be 2 to 256 characters in length and cannot start with http:// or https://. This parameter is empty by default.
ResourceGroupId	String	No	rg-bp199lyny9b3****	The ID of the resource group.
ClientToken	String	No	123e4567-e89b-12d3-a456-426655440000	The client token that is used to ensure the idempotence of the request. You can use the client to generate the value, but you must make sure that it is unique among different requests. The ClientToken value can contain only ASCII characters and cannot exceed 64 characters in length. For more information, see How to ensure idempotence.
Tag.N.Key	String	No	TestKey	The key of tag N of the reserved instance.
Tag.N.Value	String	No	TestValue	The value of tag N of the reserved instance.

Response parameters


Parameter	Type	Example	Description
RequestId	String	8C314443-AF0D-4766-9562-C83B7F1A3C8B	The ID of the request.
ReservedInstanceIdSets	List	ecsri-2ze53qonjqxg7r****	The IDs of the reserved instances.

Examples

Sample requests

https://ecs.aliyuncs.com/?Action=PurchaseReservedInstancesOffering
&RegionId=cn-hangzhou
&Scope=Zone
&ZoneId=cn-hangzhou-a
&ReservedInstanceName=test
&InstanceType=ecs.g5.2xlarge
&InstanceAmount=1
&OfferingType=AllUpfront
&Period=1
&PeriodUnit=Year
&<Common request parameters>

Sample success responses

XML format

<PurchaseReservedInstancesOfferingResponse>
      <RequestId>8C314443-AF0D-4766-9562-C83B7F1A3C8B</RequestId>
      <ReservedInstanceIdSets>
            <ReservedInstanceId>ecsri-2ze53qonjqxg7r****</ReservedInstanceId>
      </ReservedInstanceIdSets>
</PurchaseReservedInstancesOfferingResponse>

JSON format

{
    "ReservedInstanceIdSets":{
        "ReservedInstanceId":[
            "ecsri-2ze53qonjqxg7r****"
        ]
    },
    "RequestId":"8C314443-AF0D-4766-9562-C83B7F1A3C8B"
}

Error codes


HTTP status code	Error code	Error message	Description
400	InvalidInstanceType.ValueUnauthorized	The specified InstanceType is not authorized.	The error message returned because you are not authorized to use the specified instance type.
400	InvalidDescription.Malformed	The specified parameter "Description" is not valid.	The error message returned because the specified Description parameter is invalid. The description must be 2 to 256 characters in length and cannot start with http:// or https://.
400	InvalidParameter.Conflict	The specified region and cluster do not match.	The error message returned because the specified region and the specified cluster do not correspond to each other.
400	InvalidTagKey.Malformed	The specified Tag.n.Key is not valid.	The error message returned because the specified Tag.N.Key parameter is invalid.
400	RegionUnauthorized	%s	The error message returned because you are not authorized to perform the operation in the specified region.
400	Zone.NotOnSale	%s	The error message returned because the requested resources are unavailable in the specified zone.
400	InvalidPeriodUnit.ValueNotSupported	The specified parameter PeriodUnit is not valid.	The error message returned because the specified PeriodUnit parameter is invalid.
400	InvalidTagValue.Malformed	The specified Tag.n.Value is not valid.	The error message returned because the specified Tag.N.Value parameter is invalid.
400	InvalidChargeType.ValueNotSupported	ChargeType is not valid	The error message returned because the specified ChargeType parameter is invalid.
400	InvalidInstanceType.ValueNotSupported	The specified InstanceType beyond the permitted range.	The error message returned because the specified InstanceType parameter is invalid.
400	InvalidInstanceType.ValueNotSupported	The specified InstanceType does not exist or beyond the permitted range.	The error message returned because the specified InstanceType parameter does not exist or because you are not authorized to manage instances of this instance type.
403	OperationDenied	The creation of Host to the specified Zone is not allowed.	The error message returned because you are not authorized to create a dedicated host in the specified zone.
403	OperationDenied.NoStock	The requested resource is sold out in the specified zone; try other types of resources or other regions and zones.	The error message returned because resources are insufficient in the specified zone. Try other types of resources, or select other regions and zones.
403	OperationDenied	Sales of this resource are temporarily suspended in the specified region; please try again later.	The error message returned because the requested resource is unavailable in the specified region. Try again later.
403	NodeControllerUnavailable	The Node Controller is temporarily unavailable.	The error message returned because the node controller is unavailable.
403	OperationDenied	The resource is out of usage.	The error message returned because the instance is not in the Running state. Start the instance or check whether the specified operation is valid.
403	InvalidParameter.ResourceOwnerAccount	ResourceOwnerAccount is Invalid.	The error message returned because the specified ResourceOwnerAccount parameter is invalid.
403	Zone.NotOpen	The specified zone is not granted to you to buy resources yet.	The error message returned because you are not authorized to purchase resources in the specified zone.
403	Zone.NotOnSale	The specified zone is not available for purchase.	The error message returned because the requested resources are unavailable in the specified zone. Try other instance types, or select other regions or zones.
403	InvalidParameter.NotMatch	%s	The error message returned because a specified parameter is invalid. Check whether parameter conflicts exist.
403	Account.Arrearage	Your account has been in arrears.	The error message returned because your account balance is insufficient. Add funds to your account and try again.
404	PaymentMethodNotFound	No payment method has been registered on the account.	The error message returned because you have not configured a payment method for your account.
500	InternalError	The request processing has failed due to some unknown error.	The error message returned because an internal error has occurred. Try again later. If the error persists, submit a ticket.
500	InternalError	%s	The error message returned because an internal error has occurred. Try again later.
500	InternalError	The request processing has failed due to some unknown error, exception or failure.	The error message returned because an internal error has occurred. Try again later. If the error persists, submit a ticket.

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