AWS CloudFormation
User Guide (Version )

AWS::EC2::CapacityReservation

Creates a new Capacity Reservation with the specified attributes. For more information, see Capacity Reservations in the Amazon Elastic Compute Cloud User Guide.

Syntax

To declare this entity in your AWS CloudFormation template, use the following syntax:

JSON

{ "Type" : "AWS::EC2::CapacityReservation", "Properties" : { "AvailabilityZone" : String, "EbsOptimized" : Boolean, "EndDate" : String, "EndDateType" : String, "EphemeralStorage" : Boolean, "InstanceCount" : Integer, "InstanceMatchCriteria" : String, "InstancePlatform" : String, "InstanceType" : String, "TagSpecifications" : [ TagSpecification, ... ], "Tenancy" : String } }

YAML

Type: AWS::EC2::CapacityReservation Properties: AvailabilityZone: String EbsOptimized: Boolean EndDate: String EndDateType: String EphemeralStorage: Boolean InstanceCount: Integer InstanceMatchCriteria: String InstancePlatform: String InstanceType: String TagSpecifications: - TagSpecification Tenancy: String

Properties

AvailabilityZone

The Availability Zone in which to create the Capacity Reservation.

Required: Yes

Type: String

Update requires: Replacement

EbsOptimized

Indicates whether the Capacity Reservation supports EBS-optimized instances. This optimization provides dedicated throughput to Amazon EBS and an optimized configuration stack to provide optimal I/O performance. This optimization isn't available with all instance types. Additional usage charges apply when using an EBS- optimized instance.

Required: No

Type: Boolean

Update requires: Replacement

EndDate

The date and time at which the Capacity Reservation expires. When a Capacity Reservation expires, the reserved capacity is released and you can no longer launch instances into it. The Capacity Reservation's state changes to expired when it reaches its end date and time.

You must provide an EndDate value if EndDateType is limited. Omit EndDate if EndDateType is unlimited.

If the EndDateType is limited, the Capacity Reservation is cancelled within an hour from the specified time. For example, if you specify 5/31/2019, 13:30:55, the Capacity Reservation is guaranteed to end between 13:30:55 and 14:30:55 on 5/31/2019.

Required: No

Type: String

Update requires: No interruption

EndDateType

Indicates the way in which the Capacity Reservation ends. A Capacity Reservation can have one of the following end types:

  • unlimited - The Capacity Reservation remains active until you explicitly cancel it. Do not provide an EndDate if the EndDateType is unlimited.

  • limited - The Capacity Reservation expires automatically at a specified date and time. You must provide an EndDate value if the EndDateType value is limited.

Required: No

Type: String

Allowed Values: limited | unlimited

Update requires: No interruption

EphemeralStorage

Indicates whether the Capacity Reservation supports instances with temporary, block-level storage.

Required: No

Type: Boolean

Update requires: Replacement

InstanceCount

The number of instances for which to reserve capacity.

Required: Yes

Type: Integer

Update requires: No interruption

InstanceMatchCriteria

Indicates the type of instance launches that the Capacity Reservation accepts. The options include:

  • open - The Capacity Reservation automatically matches all instances that have matching attributes (instance type, platform, and Availability Zone). Instances that have matching attributes run in the Capacity Reservation automatically without specifying any additional parameters.

  • targeted - The Capacity Reservation only accepts instances that have matching attributes (instance type, platform, and Availability Zone), and explicitly target the Capacity Reservation. This ensures that only permitted instances can use the reserved capacity.

Default: open

Required: No

Type: String

Allowed Values: open | targeted

Update requires: Replacement

InstancePlatform

The type of operating system for which to reserve capacity.

Required: Yes

Type: String

Allowed Values: Linux with SQL Server Enterprise | Linux with SQL Server Standard | Linux with SQL Server Web | Linux/UNIX | Red Hat Enterprise Linux | SUSE Linux | Windows | Windows with SQL Server | Windows with SQL Server Enterprise | Windows with SQL Server Standard | Windows with SQL Server Web

Update requires: Replacement

InstanceType

The instance type for which to reserve capacity. For more information, see Instance Types in the Amazon Elastic Compute Cloud User Guide.

Required: Yes

Type: String

Update requires: Replacement

TagSpecifications

The tags to apply to the Capacity Reservation during launch.

Required: No

Type: List of TagSpecification

Update requires: Replacement

Tenancy

Indicates the tenancy of the Capacity Reservation. A Capacity Reservation can have one of the following tenancy settings:

  • default - The Capacity Reservation is created on hardware that is shared with other AWS accounts.

  • dedicated - The Capacity Reservation is created on single-tenant hardware that is dedicated to a single AWS account.

Required: No

Type: String

Allowed Values: dedicated | default

Update requires: Replacement

Return Values

Ref

When you pass the logical ID of this resource to the intrinsic Ref function, Ref returns the resource ID, such as cr-1234ab5cd6789e0f1.

For more information about using the Ref function, see Ref.

Fn::GetAtt

The Fn::GetAtt intrinsic function returns a value for a specified attribute of this type. The following are the available attributes and sample return values.

For more information about using the Fn::GetAtt intrinsic function, see Fn::GetAtt.

AvailabilityZone

Returns the Availability Zone in which the capacity is reserved. For example: us-east-1a.

AvailableInstanceCount

Returns the remaining capacity, which indicates the number of instances that can be launched in the Capacity Reservation. For example: 9.

InstanceType

Returns the type of instance for which the capacity is reserved. For example: m4.large.

Tenancy

Returns the tenancy of the Capacity Reservation. For example: dedicated.

TotalInstanceCount

Returns the total number of instances for which the Capacity Reservation reserves capacity. For example: 15.

See Also