AWS CLI Command Reference

[ aws . ec2 ]

modify-instance-metadata-options

Description

Modify the instance metadata parameters on a running or stopped instance. When you modify the parameters on a stopped instance, they are applied when the instance is started. When you modify the parameters on a running instance, the API responds with a state of “pending”. After the parameter modifications are successfully applied to the instance, the state of the modifications changes from “pending” to “applied” in subsequent describe-instances API calls. For more information, see Instance metadata and user data in the Amazon EC2 User Guide .

See also: AWS API Documentation

Synopsis

  modify-instance-metadata-options
--instance-id <value>
[--http-tokens <value>]
[--http-put-response-hop-limit <value>]
[--http-endpoint <value>]
[--dry-run | --no-dry-run]
[--http-protocol-ipv6 <value>]
[--instance-metadata-tags <value>]
[--cli-input-json | --cli-input-yaml]
[--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>]
[--cli-binary-format <value>]
[--no-cli-pager]
[--cli-auto-prompt]
[--no-cli-auto-prompt]

Options

--instance-id (string)

The ID of the instance.

--http-tokens (string)

IMDSv2 uses token-backed sessions. Set the use of HTTP tokens to optional (in other words, set the use of IMDSv2 to optional ) or required (in other words, set the use of IMDSv2 to required ).

  • optional - When IMDSv2 is optional, you can choose to retrieve instance metadata with or without a session token in your request. If you retrieve the IAM role credentials without a token, the IMDSv1 role credentials are returned. If you retrieve the IAM role credentials using a valid session token, the IMDSv2 role credentials are returned.

  • required - When IMDSv2 is required, you must send a session token with any instance metadata retrieval requests. In this state, retrieving the IAM role credentials always returns IMDSv2 credentials; IMDSv1 credentials are not available.

Default: optional

Possible values:

  • optional

  • required

--http-put-response-hop-limit (integer)

The desired HTTP PUT response hop limit for instance metadata requests. The larger the number, the further instance metadata requests can travel. If no parameter is specified, the existing state is maintained.

Possible values: Integers from 1 to 64

--http-endpoint (string)

Enables or disables the HTTP metadata endpoint on your instances. If this parameter is not specified, the existing state is maintained.

If you specify a value of disabled , you cannot access your instance metadata.

Possible values:

  • disabled

  • enabled

--dry-run | --no-dry-run (boolean)

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 .

--http-protocol-ipv6 (string)

Enables or disables the IPv6 endpoint for the instance metadata service. This setting applies only if you have enabled the HTTP metadata endpoint.

Possible values:

  • disabled

  • enabled

--instance-metadata-tags (string)

Set to enabled to allow access to instance tags from the instance metadata. Set to disabled to turn off access to instance tags from the instance metadata. For more information, see Work with instance tags using the instance metadata .

Default: disabled

Possible values:

  • disabled

  • enabled

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those 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. This may not be specified along with --cli-input-yaml.

--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. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.

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.

--output (string)

The formatting style for command output.

  • json

  • text

  • table

  • yaml

  • yaml-stream

--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.

--cli-binary-format (string)

The formatting style to be used for binary blobs. The default format is base64. The base64 format expects binary blobs to be provided as a base64 encoded string. The raw-in-base64-out format preserves compatibility with AWS CLI V1 behavior and binary values must be passed literally. When providing contents from a file that map to a binary blob fileb:// will always be treated as binary and use the file contents directly regardless of the cli-binary-format setting. When using file:// the file contents will need to properly formatted for the configured cli-binary-format.

  • base64

  • raw-in-base64-out

--no-cli-pager (boolean)

Disable cli pager for output.

--cli-auto-prompt (boolean)

Automatically prompt for CLI input parameters.

--no-cli-auto-prompt (boolean)

Disable automatically prompt for CLI input parameters.

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 enable IMDSv2

The following modify-instance-metadata-options example configures the use of IMDSv2 on the specified instance.

aws ec2 modify-instance-metadata-options \
    --instance-id i-1234567898abcdef0 \
    --http-tokens required \
    --http-endpoint enabled

Output:

{
    "InstanceId": "i-1234567898abcdef0",
    "InstanceMetadataOptions": {
        "State": "pending",
        "HttpTokens": "required",
        "HttpPutResponseHopLimit": 1,
        "HttpEndpoint": "enabled"
    }
}

For more information, see Instance metadata and user data in the Amazon Elastic Compute Cloud User Guide for Linux Instances.

Example 2: To disable instance metadata

The following modify-instance-metadata-options example disables the use of all versions of instance metadata on the specified instance.

aws ec2 modify-instance-metadata-options \
    --instance-id i-1234567898abcdef0 \
    --http-endpoint disabled

Output:

{
    "InstanceId": "i-1234567898abcdef0",
    "InstanceMetadataOptions": {
        "State": "pending",
        "HttpTokens": "required",
        "HttpPutResponseHopLimit": 1,
        "HttpEndpoint": "disabled"
    }
}

For more information, see Instance metadata and user data in the Amazon Elastic Compute Cloud User Guide for Linux Instances.

Example 3: To enable instance metadata IPv6 endpoint for your instance

The following modify-instance-metadata-options example shows you how to turn on the IPv6 endpoint for the instance metadata service.

aws ec2 modify-instance-metadata-options \
    --instance-id i-1234567898abcdef0 \
    --http-protocol-ipv6 enabled \
    --http-endpoint enabled

Output:

{
    "InstanceId": "i-1234567898abcdef0",
    "InstanceMetadataOptions": {
        "State": "pending",
        "HttpTokens": "required",
        "HttpPutResponseHopLimit": 1,
        "HttpEndpoint": "enabled",
        HttpProtocolIpv6": "enabled"
    }
}

By default, the IPv6 endpoint is disabled. This is true even if you have launched an instance into an IPv6-only subnet. The IPv6 endpoint for IMDS is only accessible on instances built on the Nitro System. For more information, see Instance metadata and user data in the Amazon Elastic Compute Cloud User Guide for Linux Instances.

Output

InstanceId -> (string)

The ID of the instance.

InstanceMetadataOptions -> (structure)

The metadata options for the instance.

State -> (string)

The state of the metadata option changes.

pending - The metadata options are being updated and the instance is not ready to process metadata traffic with the new selection.

applied - The metadata options have been successfully applied on the instance.

HttpTokens -> (string)

IMDSv2 uses token-backed sessions. Indicates whether the use of HTTP tokens is optional (in other words, indicates whether the use of IMDSv2 is optional ) or required (in other words, indicates whether the use of IMDSv2 is required ).

  • optional - When IMDSv2 is optional, you can choose to retrieve instance metadata with or without a session token in your request. If you retrieve the IAM role credentials without a token, the IMDSv1 role credentials are returned. If you retrieve the IAM role credentials using a valid session token, the IMDSv2 role credentials are returned.

  • required - When IMDSv2 is required, you must send a session token with any instance metadata retrieval requests. In this state, retrieving the IAM role credentials always returns IMDSv2 credentials; IMDSv1 credentials are not available.

Default: optional

HttpPutResponseHopLimit -> (integer)

The desired HTTP PUT response hop limit for instance metadata requests. The larger the number, the further instance metadata requests can travel.

Default: 1

Possible values: Integers from 1 to 64

HttpEndpoint -> (string)

Indicates whether the HTTP metadata endpoint on your instances is enabled or disabled.

If the value is disabled , you cannot access your instance metadata.

HttpProtocolIpv6 -> (string)

Indicates whether the IPv6 endpoint for the instance metadata service is enabled or disabled.

InstanceMetadataTags -> (string)

Indicates whether access to instance tags from the instance metadata is enabled or disabled. For more information, see Work with instance tags using the instance metadata .

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