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[ aws . ec2 ]

allocate-hosts¶

Description¶

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.

Synopsis¶

  allocate-hosts
[--instance-family <value>]
[--tag-specifications <value>]
[--host-recovery <value>]
[--outpost-arn <value>]
[--host-maintenance <value>]
[--asset-ids <value>]
[--auto-placement <value>]
[--client-token <value>]
[--instance-type <value>]
[--quantity <value>]
--availability-zone <value>
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]
[--debug]
[--endpoint-url <value>]
[--no-verify-ssl]
[--no-paginate]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--no-sign-request]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]

Options¶

--instance-family (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.

--tag-specifications (list)

The tags to apply to the Dedicated Host during creation.

(structure)

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.

(structure)

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.

Shorthand Syntax:

ResourceType=string,Tags=[{Key=string,Value=string},{Key=string,Value=string}] ...

JSON Syntax:

[
  {
    "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"
      }
      ...
    ]
  }
  ...
]

--host-recovery (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

Possible values:

on

off

--outpost-arn (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.

--host-maintenance (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 .

Possible values:

on

off

--asset-ids (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)

Syntax:

"string" "string" ...

--auto-placement (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

Possible values:

on

off

--client-token (string)

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

--instance-type (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.

--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.

--availability-zone (string)

The Availability Zone in which to allocate the Dedicated Host.

--cli-input-json (string) Performs service operation based on the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, the CLI values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

Global Options¶

--debug (boolean)

Turn on debug logging.

--endpoint-url (string)

Override command's default URL with the given URL.

--no-verify-ssl (boolean)

By default, the AWS CLI uses SSL when communicating with AWS services. For each SSL connection, the AWS CLI will verify SSL certificates. This option overrides the default behavior of verifying SSL certificates.

--no-paginate (boolean)

Disable automatic pagination. If automatic pagination is disabled, the AWS CLI will only make one call, for the first page of results.

--output (string)

The formatting style for command output.

json
text
table

--query (string)

A JMESPath query to use in filtering the response data.

--profile (string)

Use a specific profile from your credential file.

--region (string)

The region to use. Overrides config/env settings.

--version (string)

Display the version of this tool.

--color (string)

Turn on/off color output.

on
off
auto

--no-sign-request (boolean)

Do not sign requests. Credentials will not be loaded if this argument is provided.

--ca-bundle (string)

The CA certificate bundle to use when verifying SSL certificates. Overrides config/env settings.

--cli-read-timeout (int)

The maximum socket read time in seconds. If the value is set to 0, the socket read will be blocking and not timeout. The default value is 60 seconds.

--cli-connect-timeout (int)

The maximum socket connect time in seconds. If the value is set to 0, the socket connect will be blocking and not timeout. The default value is 60 seconds.

Examples¶

Note

To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.

Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal's quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .

Example 1: To allocate a Dedicated Host

The following allocate-hosts example allocates a single Dedicated Host in the eu-west-1a Availability Zone, onto which you can launch m5.large instances. By default, the Dedicated Host accepts only target instance launches, and does not support host recovery.

aws ec2 allocate-hosts \
    --instance-type m5.large \
    --availability-zone eu-west-1a \
    --quantity 1

Output:

{
    "HostIds": [
        "h-07879acf49EXAMPLE"
    ]
}

Example 2: To allocate a Dedicated Host with auto-placement and host recovery enabled

The following allocate-hosts example allocates a single Dedicated Host in the eu-west-1a Availability Zone with auto-placement and host recovery enabled.

aws ec2 allocate-hosts \
    --instance-type m5.large \
    --availability-zone eu-west-1a \
    --auto-placement on \
    --host-recovery on \
    --quantity 1

Output:

{
     "HostIds": [
         "h-07879acf49EXAMPLE"
     ]
}

Example 3: To allocate a Dedicated Host with tags

The following allocate-hosts example allocates a single Dedicated Host and applies a tag with a key named purpose and a value of production.

aws ec2 allocate-hosts \
    --instance-type m5.large \
    --availability-zone eu-west-1a \
    --quantity 1 \
    --tag-specifications 'ResourceType=dedicated-host,Tags={Key=purpose,Value=production}'

Output:

{
    "HostIds": [
        "h-07879acf49EXAMPLE"
    ]
}

For more information, see Allocating Dedicated Hosts in the Amazon Elastic Compute Cloud User Guide for Linux Instances.

Output¶

HostIds -> (list)

The ID of the allocated Dedicated Host. This is used to launch an instance onto a specific host.

(string)

Table Of Contents

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User Guide

Note:

allocate-hosts¶

Description¶

Synopsis¶

Options¶

Note

Global Options¶

Examples¶

Note

Output¶