EC2 / Client / allocate_hosts

allocate_hosts#

EC2.Client.allocate_hosts(**kwargs)#

Allocates a Dedicated Host to your account. At a minimum, specify the supported instance type or instance family, the Availability Zone in which to allocate the host, and the number of hosts to allocate.

Request Syntax

response = client.allocate_hosts(
    AutoPlacement='on'|'off',
    AvailabilityZone='string',
    ClientToken='string',
    InstanceType='string',
    InstanceFamily='string',
    Quantity=123,
    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'|'verified-access-instance'|'verified-access-group'|'verified-access-endpoint'|'verified-access-policy'|'verified-access-trust-provider'|'vpn-connection-device-type'|'vpc-block-public-access-exclusion'|'ipam-resource-discovery'|'ipam-resource-discovery-association'|'instance-connect-endpoint'|'ipam-external-resource-verification-token',
            'Tags': [
                {
                    'Key': 'string',
                    'Value': 'string'
                },
            ]
        },
    ],
    HostRecovery='on'|'off',
    OutpostArn='string',
    HostMaintenance='on'|'off',
    AssetIds=[
        'string',
    ]
)

Parameters:

AutoPlacement (string) –
Indicates whether the host accepts any untargeted instance launches that match its instance type configuration, or if it only accepts Host tenancy instance launches that specify its unique host ID. For more information, see Understanding auto-placement and affinity in the Amazon EC2 User Guide.

Default: off
AvailabilityZone (string) –
[REQUIRED]

The Availability Zone in which to allocate the Dedicated Host.
ClientToken (string) – Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. For more information, see Ensuring Idempotency.
InstanceType (string) –
Specifies the instance type to be supported by the Dedicated Hosts. If you specify an instance type, the Dedicated Hosts support instances of the specified instance type only.

If you want the Dedicated Hosts to support multiple instance types in a specific instance family, omit this parameter and specify InstanceFamily instead. You cannot specify InstanceType and InstanceFamily in the same request.
InstanceFamily (string) –
Specifies the instance family to be supported by the Dedicated Hosts. If you specify an instance family, the Dedicated Hosts support multiple instance types within that instance family.

If you want the Dedicated Hosts to support a specific instance type only, omit this parameter and specify InstanceType instead. You cannot specify InstanceFamily and InstanceType in the same request.
Quantity (integer) – The number of Dedicated Hosts to allocate to your account with these parameters. If you are allocating the Dedicated Hosts on an Outpost, and you specify AssetIds, you can omit this parameter. In this case, Amazon EC2 allocates a Dedicated Host on each specified hardware asset. If you specify both AssetIds and Quantity, then the value that you specify for Quantity must be equal to the number of asset IDs specified.
TagSpecifications (list) –
The tags to apply to the Dedicated Host during creation.
- (dict) –
  
  The tags to apply to a resource when the resource is being created. When you specify a tag, you must specify the resource type to tag, otherwise the request will fail.
  
  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.
HostRecovery (string) –
Indicates whether to enable or disable host recovery for the Dedicated Host. Host recovery is disabled by default. For more information, see Host recovery in the Amazon EC2 User Guide.

Default: off
OutpostArn (string) –
The Amazon Resource Name (ARN) of the Amazon Web Services Outpost on which to allocate the Dedicated Host. If you specify OutpostArn, you can optionally specify AssetIds.

If you are allocating the Dedicated Host in a Region, omit this parameter.
HostMaintenance (string) – Indicates whether to enable or disable host maintenance for the Dedicated Host. For more information, see Host maintenance in the Amazon EC2 User Guide.
AssetIds (list) –
The IDs of the Outpost hardware assets on which to allocate the Dedicated Hosts. Targeting specific hardware assets on an Outpost can help to minimize latency between your workloads. This parameter is supported only if you specify OutpostArn. If you are allocating the Dedicated Hosts in a Region, omit this parameter.
- If you specify this parameter, you can omit Quantity. In this case, Amazon EC2 allocates a Dedicated Host on each specified hardware asset.
- If you specify both AssetIds and Quantity, then the value for Quantity must be equal to the number of asset IDs specified.
- (string) –

Return type:

dict

Returns:

Response Syntax

{
    'HostIds': [
        'string',
    ]
}

Response Structure

(dict) –

Contains the output of AllocateHosts.
- HostIds (list) –
  
  The ID of the allocated Dedicated Host. This is used to launch an instance onto a specific host.
  - (string) –