AWS::EC2::Subnet PrivateDnsNameOptionsOnLaunch

Describes the options for instance hostnames.

Syntax

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

JSON

{
  "EnableResourceNameDnsAAAARecord" : Boolean,
  "EnableResourceNameDnsARecord" : Boolean,
  "HostnameType" : String
}

YAML

  EnableResourceNameDnsAAAARecord: Boolean
  EnableResourceNameDnsARecord: Boolean
  HostnameType: String

Properties

EnableResourceNameDnsAAAARecord

Indicates whether to respond to DNS queries for instance hostname with DNS AAAA records.

Required: No

Type: Boolean

Update requires: No interruption

EnableResourceNameDnsARecord

Indicates whether to respond to DNS queries for instance hostnames with DNS A records.

Required: No

Type: Boolean

Update requires: No interruption

HostnameType

The type of hostname for EC2 instances. For IPv4 only subnets, an instance DNS name must be based on the instance IPv4 address. For IPv6 only subnets, an instance DNS name must be based on the instance ID. For dual-stack subnets, you can specify whether DNS names use the instance IPv4 address or the instance ID.

Required: No

Type: String

Allowed values: ip-name | resource-name

Update requires: No interruption