AWS API Changes

2022/09/19 - Amazon Elastic Compute Cloud - 2 updated api methods

Changes This release adds CapacityAllocations field to DescribeCapacityReservations

CreateCapacityReservation (updated)

Link ¶
Changes (response)

{'CapacityReservation': {'CapacityAllocations': [{'AllocationType': 'used',
                                                  'Count': 'integer'}]}}

Creates a new Capacity Reservation with the specified attributes.

Capacity Reservations enable you to reserve capacity for your Amazon EC2 instances in a specific Availability Zone for any duration. This gives you the flexibility to selectively add capacity reservations and still get the Regional RI discounts for that usage. By creating Capacity Reservations, you ensure that you always have access to Amazon EC2 capacity when you need it, for as long as you need it. For more information, see Capacity Reservations in the Amazon EC2 User Guide.

Your request to create a Capacity Reservation could fail if Amazon EC2 does not have sufficient capacity to fulfill the request. If your request fails due to Amazon EC2 capacity constraints, either try again at a later time, try in a different Availability Zone, or request a smaller capacity reservation. If your application is flexible across instance types and sizes, try to create a Capacity Reservation with different instance attributes.

Your request could also fail if the requested quantity exceeds your On-Demand Instance limit for the selected instance type. If your request fails due to limit constraints, increase your On-Demand Instance limit for the required instance type and try again. For more information about increasing your instance limits, see Amazon EC2 Service Quotas in the Amazon EC2 User Guide.

See also: AWS API Documentation

Request Syntax

client.create_capacity_reservation(
    ClientToken='string',
    InstanceType='string',
    InstancePlatform='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'|'Linux with SQL Server Standard'|'Linux with SQL Server Web'|'Linux with SQL Server Enterprise'|'RHEL with SQL Server Standard'|'RHEL with SQL Server Enterprise'|'RHEL with SQL Server Web'|'RHEL with HA'|'RHEL with HA and SQL Server Standard'|'RHEL with HA and SQL Server Enterprise',
    AvailabilityZone='string',
    AvailabilityZoneId='string',
    Tenancy='default'|'dedicated',
    InstanceCount=123,
    EbsOptimized=True|False,
    EphemeralStorage=True|False,
    EndDate=datetime(2015, 1, 1),
    EndDateType='unlimited'|'limited',
    InstanceMatchCriteria='open'|'targeted',
    TagSpecifications=[
        {
            'ResourceType': 'capacity-reservation'|'client-vpn-endpoint'|'customer-gateway'|'carrier-gateway'|'coip-pool'|'dedicated-host'|'dhcp-options'|'egress-only-internet-gateway'|'elastic-ip'|'elastic-gpu'|'export-image-task'|'export-instance-task'|'fleet'|'fpga-image'|'host-reservation'|'image'|'import-image-task'|'import-snapshot-task'|'instance'|'instance-event-window'|'internet-gateway'|'ipam'|'ipam-pool'|'ipam-scope'|'ipv4pool-ec2'|'ipv6pool-ec2'|'key-pair'|'launch-template'|'local-gateway'|'local-gateway-route-table'|'local-gateway-virtual-interface'|'local-gateway-virtual-interface-group'|'local-gateway-route-table-vpc-association'|'local-gateway-route-table-virtual-interface-group-association'|'natgateway'|'network-acl'|'network-interface'|'network-insights-analysis'|'network-insights-path'|'network-insights-access-scope'|'network-insights-access-scope-analysis'|'placement-group'|'prefix-list'|'replace-root-volume-task'|'reserved-instances'|'route-table'|'security-group'|'security-group-rule'|'snapshot'|'spot-fleet-request'|'spot-instances-request'|'subnet'|'subnet-cidr-reservation'|'traffic-mirror-filter'|'traffic-mirror-session'|'traffic-mirror-target'|'transit-gateway'|'transit-gateway-attachment'|'transit-gateway-connect-peer'|'transit-gateway-multicast-domain'|'transit-gateway-policy-table'|'transit-gateway-route-table'|'transit-gateway-route-table-announcement'|'volume'|'vpc'|'vpc-endpoint'|'vpc-endpoint-connection'|'vpc-endpoint-service'|'vpc-endpoint-service-permission'|'vpc-peering-connection'|'vpn-connection'|'vpn-gateway'|'vpc-flow-log'|'capacity-reservation-fleet'|'traffic-mirror-filter-rule'|'vpc-endpoint-connection-device-type'|'vpn-connection-device-type',
            'Tags': [
                {
                    'Key': 'string',
                    'Value': 'string'
                },
            ]
        },
    ],
    DryRun=True|False,
    OutpostArn='string',
    PlacementGroupArn='string'
)

type ClientToken:

string

param ClientToken:

Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. For more information, see Ensure Idempotency.

type InstanceType:

string

param InstanceType:

[REQUIRED]

The instance type for which to reserve capacity. For more information, see Instance types in the Amazon EC2 User Guide.

type InstancePlatform:

string

param InstancePlatform:

[REQUIRED]

The type of operating system for which to reserve capacity.

type AvailabilityZone:

string

param AvailabilityZone:

The Availability Zone in which to create the Capacity Reservation.

type AvailabilityZoneId:

string

param AvailabilityZoneId:

The ID of the Availability Zone in which to create the Capacity Reservation.

type Tenancy:

string

param 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 Amazon Web Services accounts.
dedicated - The Capacity Reservation is created on single-tenant hardware that is dedicated to a single Amazon Web Services account.

type InstanceCount:

integer

param InstanceCount:

[REQUIRED]

The number of instances for which to reserve capacity.

Valid range: 1 - 1000

type EbsOptimized:

boolean

param 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.

type EphemeralStorage:

boolean

param EphemeralStorage:

Deprecated.

type EndDate:

datetime

param 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.

type EndDateType:

string

param 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.

type InstanceMatchCriteria:

string

param 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

type TagSpecifications:

list

param TagSpecifications:

The tags to apply to the Capacity Reservation during launch.

(dict) --

The tags to apply to a resource when the resource is being created.

Note

The Valid Values lists all the resource types that can be tagged. However, the action you're using might not support tagging all of these resource types. If you try to tag a resource type that is unsupported for the action you're using, you'll get an error.
- ResourceType (string) --
  
  The type of resource to tag on creation.
- Tags (list) --
  
  The tags to apply to the resource.
  - (dict) --
    
    Describes a tag.
    - Key (string) --
      
      The key of the tag.
      
      Constraints: Tag keys are case-sensitive and accept a maximum of 127 Unicode characters. May not begin with aws:.
    - Value (string) --
      
      The value of the tag.
      
      Constraints: Tag values are case-sensitive and accept a maximum of 256 Unicode characters.

type DryRun:

boolean

param DryRun:

Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is DryRunOperation. Otherwise, it is UnauthorizedOperation.

type OutpostArn:

string

param OutpostArn:

The Amazon Resource Name (ARN) of the Outpost on which to create the Capacity Reservation.

type PlacementGroupArn:

string

param PlacementGroupArn:

The Amazon Resource Name (ARN) of the cluster placement group in which to create the Capacity Reservation. For more information, see Capacity Reservations for cluster placement groups in the Amazon EC2 User Guide.

rtype:

dict

returns:

Response Syntax

{
    'CapacityReservation': {
        'CapacityReservationId': 'string',
        'OwnerId': 'string',
        'CapacityReservationArn': 'string',
        'AvailabilityZoneId': 'string',
        'InstanceType': 'string',
        'InstancePlatform': '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'|'Linux with SQL Server Standard'|'Linux with SQL Server Web'|'Linux with SQL Server Enterprise'|'RHEL with SQL Server Standard'|'RHEL with SQL Server Enterprise'|'RHEL with SQL Server Web'|'RHEL with HA'|'RHEL with HA and SQL Server Standard'|'RHEL with HA and SQL Server Enterprise',
        'AvailabilityZone': 'string',
        'Tenancy': 'default'|'dedicated',
        'TotalInstanceCount': 123,
        'AvailableInstanceCount': 123,
        'EbsOptimized': True|False,
        'EphemeralStorage': True|False,
        'State': 'active'|'expired'|'cancelled'|'pending'|'failed',
        'StartDate': datetime(2015, 1, 1),
        'EndDate': datetime(2015, 1, 1),
        'EndDateType': 'unlimited'|'limited',
        'InstanceMatchCriteria': 'open'|'targeted',
        'CreateDate': datetime(2015, 1, 1),
        'Tags': [
            {
                'Key': 'string',
                'Value': 'string'
            },
        ],
        'OutpostArn': 'string',
        'CapacityReservationFleetId': 'string',
        'PlacementGroupArn': 'string',
        'CapacityAllocations': [
            {
                'AllocationType': 'used',
                'Count': 123
            },
        ]
    }
}

Response Structure

(dict) --
- CapacityReservation (dict) --
  
  Information about the Capacity Reservation.
  - CapacityReservationId (string) --
    
    The ID of the Capacity Reservation.
  - OwnerId (string) --
    
    The ID of the Amazon Web Services account that owns the Capacity Reservation.
  - CapacityReservationArn (string) --
    
    The Amazon Resource Name (ARN) of the Capacity Reservation.
  - AvailabilityZoneId (string) --
    
    The Availability Zone ID of the Capacity Reservation.
  - InstanceType (string) --
    
    The type of instance for which the Capacity Reservation reserves capacity.
  - InstancePlatform (string) --
    
    The type of operating system for which the Capacity Reservation reserves capacity.
  - AvailabilityZone (string) --
    
    The Availability Zone in which the capacity is reserved.
  - Tenancy (string) --
    
    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 Amazon Web Services accounts.
    - dedicated - The Capacity Reservation is created on single-tenant hardware that is dedicated to a single Amazon Web Services account.
  - TotalInstanceCount (integer) --
    
    The total number of instances for which the Capacity Reservation reserves capacity.
  - AvailableInstanceCount (integer) --
    
    The remaining capacity. Indicates the number of instances that can be launched in the Capacity Reservation.
  - EbsOptimized (boolean) --
    
    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.
  - EphemeralStorage (boolean) --
    
    Deprecated.
  - State (string) --
    
    The current state of the Capacity Reservation. A Capacity Reservation can be in one of the following states:
    - active - The Capacity Reservation is active and the capacity is available for your use.
    - expired - The Capacity Reservation expired automatically at the date and time specified in your request. The reserved capacity is no longer available for your use.
    - cancelled - The Capacity Reservation was cancelled. The reserved capacity is no longer available for your use.
    - pending - The Capacity Reservation request was successful but the capacity provisioning is still pending.
    - failed - The Capacity Reservation request has failed. A request might fail due to invalid request parameters, capacity constraints, or instance limit constraints. Failed requests are retained for 60 minutes.
  - StartDate (datetime) --
    
    The date and time at which the Capacity Reservation was started.
  - EndDate (datetime) --
    
    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.
  - EndDateType (string) --
    
    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.
    - limited - The Capacity Reservation expires automatically at a specified date and time.
  - InstanceMatchCriteria (string) --
    
    Indicates the type of instance launches that the Capacity Reservation accepts. The options include:
    - open - The Capacity Reservation accepts all instances that have matching attributes (instance type, platform, and Availability Zone). Instances that have matching attributes launch into 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.
  - CreateDate (datetime) --
    
    The date and time at which the Capacity Reservation was created.
  - Tags (list) --
    
    Any tags assigned to the Capacity Reservation.
    - (dict) --
      
      Describes a tag.
      - Key (string) --
        
        The key of the tag.
        
        Constraints: Tag keys are case-sensitive and accept a maximum of 127 Unicode characters. May not begin with aws:.
      - Value (string) --
        
        The value of the tag.
        
        Constraints: Tag values are case-sensitive and accept a maximum of 256 Unicode characters.
  - OutpostArn (string) --
    
    The Amazon Resource Name (ARN) of the Outpost on which the Capacity Reservation was created.
  - CapacityReservationFleetId (string) --
    
    The ID of the Capacity Reservation Fleet to which the Capacity Reservation belongs. Only valid for Capacity Reservations that were created by a Capacity Reservation Fleet.
  - PlacementGroupArn (string) --
    
    The Amazon Resource Name (ARN) of the cluster placement group in which the Capacity Reservation was created. For more information, see Capacity Reservations for cluster placement groups in the Amazon EC2 User Guide.
  - CapacityAllocations (list) --
    
    Information about instance capacity usage.
    - (dict) --
      
      Information about instance capacity usage for a Capacity Reservation.
      - AllocationType (string) --
        
        The usage type. used indicates that the instance capacity is in use by instances that are running in the Capacity Reservation.
      - Count (integer) --
        
        The amount of instance capacity associated with the usage. For example a value of 4 indicates that instance capacity for 4 instances is currently in use.

DescribeCapacityReservations (updated)

Link ¶
Changes (response)

{'CapacityReservations': {'CapacityAllocations': [{'AllocationType': 'used',
                                                   'Count': 'integer'}]}}

Describes one or more of your Capacity Reservations. The results describe only the Capacity Reservations in the Amazon Web Services Region that you're currently using.

See also: AWS API Documentation

Request Syntax

client.describe_capacity_reservations(
    CapacityReservationIds=[
        'string',
    ],
    NextToken='string',
    MaxResults=123,
    Filters=[
        {
            'Name': 'string',
            'Values': [
                'string',
            ]
        },
    ],
    DryRun=True|False
)

type CapacityReservationIds:

list

param CapacityReservationIds:

The ID of the Capacity Reservation.

(string) --

type NextToken:

string

param NextToken:

The token to use to retrieve the next page of results.

type MaxResults:

integer

param MaxResults:

The maximum number of results to return for the request in a single page. The remaining results can be seen by sending another request with the returned nextToken value. This value can be between 5 and 500. If maxResults is given a larger value than 500, you receive an error.

type Filters:

list

param Filters:

One or more filters.

instance-type - The type of instance for which the Capacity Reservation reserves capacity.
owner-id - The ID of the Amazon Web Services account that owns the Capacity Reservation.
instance-platform - The type of operating system for which the Capacity Reservation reserves capacity.
availability-zone - The Availability Zone of the Capacity Reservation.
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 Amazon Web Services accounts.
- dedicated - The Capacity Reservation is created on single-tenant hardware that is dedicated to a single Amazon Web Services account.
outpost-arn - The Amazon Resource Name (ARN) of the Outpost on which the Capacity Reservation was created.
state - The current state of the Capacity Reservation. A Capacity Reservation can be in one of the following states:
- active- The Capacity Reservation is active and the capacity is available for your use.
- expired - The Capacity Reservation expired automatically at the date and time specified in your request. The reserved capacity is no longer available for your use.
- cancelled - The Capacity Reservation was cancelled. The reserved capacity is no longer available for your use.
- pending - The Capacity Reservation request was successful but the capacity provisioning is still pending.
- failed - The Capacity Reservation request has failed. A request might fail due to invalid request parameters, capacity constraints, or instance limit constraints. Failed requests are retained for 60 minutes.
start-date - The date and time at which the Capacity Reservation was started.
end-date - 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.
end-date-type - 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.
- limited - The Capacity Reservation expires automatically at a specified date and time.
instance-match-criteria - Indicates the type of instance launches that the Capacity Reservation accepts. The options include:
- open - The Capacity Reservation accepts all instances that have matching attributes (instance type, platform, and Availability Zone). Instances that have matching attributes launch into 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.
placement-group-arn - The ARN of the cluster placement group in which the Capacity Reservation was created.

(dict) --

A filter name and value pair that is used to return a more specific list of results from a describe operation. Filters can be used to match a set of resources by specific criteria, such as tags, attributes, or IDs.

If you specify multiple filters, the filters are joined with an AND, and the request returns only results that match all of the specified filters.
- Name (string) --
  
  The name of the filter. Filter names are case-sensitive.
- Values (list) --
  
  The filter values. Filter values are case-sensitive. If you specify multiple values for a filter, the values are joined with an OR, and the request returns all results that match any of the specified values.
  - (string) --

type DryRun:

boolean

param DryRun:

rtype:

dict

returns:

Response Syntax

{
    'NextToken': 'string',
    'CapacityReservations': [
        {
            'CapacityReservationId': 'string',
            'OwnerId': 'string',
            'CapacityReservationArn': 'string',
            'AvailabilityZoneId': 'string',
            'InstanceType': 'string',
            'InstancePlatform': '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'|'Linux with SQL Server Standard'|'Linux with SQL Server Web'|'Linux with SQL Server Enterprise'|'RHEL with SQL Server Standard'|'RHEL with SQL Server Enterprise'|'RHEL with SQL Server Web'|'RHEL with HA'|'RHEL with HA and SQL Server Standard'|'RHEL with HA and SQL Server Enterprise',
            'AvailabilityZone': 'string',
            'Tenancy': 'default'|'dedicated',
            'TotalInstanceCount': 123,
            'AvailableInstanceCount': 123,
            'EbsOptimized': True|False,
            'EphemeralStorage': True|False,
            'State': 'active'|'expired'|'cancelled'|'pending'|'failed',
            'StartDate': datetime(2015, 1, 1),
            'EndDate': datetime(2015, 1, 1),
            'EndDateType': 'unlimited'|'limited',
            'InstanceMatchCriteria': 'open'|'targeted',
            'CreateDate': datetime(2015, 1, 1),
            'Tags': [
                {
                    'Key': 'string',
                    'Value': 'string'
                },
            ],
            'OutpostArn': 'string',
            'CapacityReservationFleetId': 'string',
            'PlacementGroupArn': 'string',
            'CapacityAllocations': [
                {
                    'AllocationType': 'used',
                    'Count': 123
                },
            ]
        },
    ]
}

Response Structure

(dict) --
- NextToken (string) --
  
  The token to use to retrieve the next page of results. This value is null when there are no more results to return.
- CapacityReservations (list) --
  
  Information about the Capacity Reservations.
  - (dict) --
    
    Describes a Capacity Reservation.
    - CapacityReservationId (string) --
      
      The ID of the Capacity Reservation.
    - OwnerId (string) --
      
      The ID of the Amazon Web Services account that owns the Capacity Reservation.
    - CapacityReservationArn (string) --
      
      The Amazon Resource Name (ARN) of the Capacity Reservation.
    - AvailabilityZoneId (string) --
      
      The Availability Zone ID of the Capacity Reservation.
    - InstanceType (string) --
      
      The type of instance for which the Capacity Reservation reserves capacity.
    - InstancePlatform (string) --
      
      The type of operating system for which the Capacity Reservation reserves capacity.
    - AvailabilityZone (string) --
      
      The Availability Zone in which the capacity is reserved.
    - Tenancy (string) --
      
      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 Amazon Web Services accounts.
      - dedicated - The Capacity Reservation is created on single-tenant hardware that is dedicated to a single Amazon Web Services account.
    - TotalInstanceCount (integer) --
      
      The total number of instances for which the Capacity Reservation reserves capacity.
    - AvailableInstanceCount (integer) --
      
      The remaining capacity. Indicates the number of instances that can be launched in the Capacity Reservation.
    - EbsOptimized (boolean) --
      
      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.
    - EphemeralStorage (boolean) --
      
      Deprecated.
    - State (string) --
      
      The current state of the Capacity Reservation. A Capacity Reservation can be in one of the following states:
      - active - The Capacity Reservation is active and the capacity is available for your use.
      - expired - The Capacity Reservation expired automatically at the date and time specified in your request. The reserved capacity is no longer available for your use.
      - cancelled - The Capacity Reservation was cancelled. The reserved capacity is no longer available for your use.
      - pending - The Capacity Reservation request was successful but the capacity provisioning is still pending.
      - failed - The Capacity Reservation request has failed. A request might fail due to invalid request parameters, capacity constraints, or instance limit constraints. Failed requests are retained for 60 minutes.
    - StartDate (datetime) --
      
      The date and time at which the Capacity Reservation was started.
    - EndDate (datetime) --
      
      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.
    - EndDateType (string) --
      
      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.
      - limited - The Capacity Reservation expires automatically at a specified date and time.
    - InstanceMatchCriteria (string) --
      
      Indicates the type of instance launches that the Capacity Reservation accepts. The options include:
      - open - The Capacity Reservation accepts all instances that have matching attributes (instance type, platform, and Availability Zone). Instances that have matching attributes launch into 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.
    - CreateDate (datetime) --
      
      The date and time at which the Capacity Reservation was created.
    - Tags (list) --
      
      Any tags assigned to the Capacity Reservation.
      - (dict) --
        
        Describes a tag.
        
        Key (string) --
        
        The key of the tag.
        
        Constraints: Tag keys are case-sensitive and accept a maximum of 127 Unicode characters. May not begin with aws:.
        
        Value (string) --
        
        The value of the tag.
        
        Constraints: Tag values are case-sensitive and accept a maximum of 256 Unicode characters.
    - OutpostArn (string) --
      
      The Amazon Resource Name (ARN) of the Outpost on which the Capacity Reservation was created.
    - CapacityReservationFleetId (string) --
      
      The ID of the Capacity Reservation Fleet to which the Capacity Reservation belongs. Only valid for Capacity Reservations that were created by a Capacity Reservation Fleet.
    - PlacementGroupArn (string) --
      
      The Amazon Resource Name (ARN) of the cluster placement group in which the Capacity Reservation was created. For more information, see Capacity Reservations for cluster placement groups in the Amazon EC2 User Guide.
    - CapacityAllocations (list) --
      
      Information about instance capacity usage.
      - (dict) --
        
        Information about instance capacity usage for a Capacity Reservation.
        
        AllocationType (string) --
        
        The usage type. used indicates that the instance capacity is in use by instances that are running in the Capacity Reservation.
        
        Count (integer) --
        
        The amount of instance capacity associated with the usage. For example a value of 4 indicates that instance capacity for 4 instances is currently in use.