AWS::AutoScaling::LaunchConfiguration MetadataOptions

MetadataOptions is a property of AWS::AutoScaling::LaunchConfiguration that describes metadata options for the instances.

For more information, see Configure the instance metadata options in the Amazon EC2 Auto Scaling User Guide.

Syntax

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

JSON

{
  "HttpEndpoint" : String,
  "HttpPutResponseHopLimit" : Integer,
  "HttpTokens" : String
}

YAML

  HttpEndpoint: String
  HttpPutResponseHopLimit: Integer
  HttpTokens: String

Properties

HttpEndpoint

This parameter enables or disables the HTTP metadata endpoint on your instances. If the parameter is not specified, the default state is enabled.

Note

If you specify a value of disabled, you will not be able to access your instance metadata.

Required: No

Type: String

Allowed values: disabled | enabled

Update requires: Replacement

HttpPutResponseHopLimit

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

Default: 1

Required: No

Type: Integer

Minimum: 1

Maximum: 64

Update requires: Replacement

HttpTokens

The state of token usage for your instance metadata requests. If the parameter is not specified in the request, the default state is optional.

If the state is optional, you can choose to retrieve instance metadata with or without a signed token header on your request. If you retrieve the IAM role credentials without a token, the version 1.0 role credentials are returned. If you retrieve the IAM role credentials using a valid signed token, the version 2.0 role credentials are returned.

If the state is required, you must send a signed token header with any instance metadata retrieval requests. In this state, retrieving the IAM role credentials always returns the version 2.0 credentials; the version 1.0 credentials are not available.

Required: No

Type: String

Allowed values: optional | required

Update requires: Replacement