# Source: https://docs.datadoghq.com/ddsql_reference/data_directory/aws/aws.autoscaling_launch_configuration.dataset.md

---
title: EC2 Auto Scaling Launch Configuration
description: Datadog, the leading service for cloud-scale monitoring.
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  Docs > DDSQL Reference > Data Directory > EC2 Auto Scaling Launch
  Configuration
---

# EC2 Auto Scaling Launch Configuration

An EC2 Auto Scaling Launch Configuration is a template that defines how Amazon EC2 instances should be launched within an Auto Scaling group. It specifies details such as the Amazon Machine Image (AMI), instance type, key pair, security groups, and block storage settings. This configuration ensures that new instances launched by Auto Scaling are consistent and meet the defined requirements.

```
aws.autoscaling_launch_configuration
```

## Fields

| Title                            | ID   | Type          | Data Type                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | Description |
| -------------------------------- | ---- | ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ----------- |
| _key                             | core | string        |
| account_id                       | core | string        |
| associate_public_ip_address      | core | bool          | Specifies whether to assign a public IPv4 address to the group's instances. If the instance is launched into a default subnet, the default is to assign a public IPv4 address, unless you disabled the option to assign a public IPv4 address on the subnet. If the instance is launched into a nondefault subnet, the default is not to assign a public IPv4 address, unless you enabled the option to assign a public IPv4 address on the subnet. For more information, see Provide network connectivity for your Auto Scaling instances using Amazon VPC in the Amazon EC2 Auto Scaling User Guide. |
| block_device_mappings            | core | json          | The block device mapping entries that define the block devices to attach to the instances at launch. By default, the block devices specified in the block device mapping for the AMI are used. For more information, see Block device mappings in the Amazon EC2 User Guide.                                                                                                                                                                                                                                                                                                                           |
| classic_link_vpc_id              | core | string        | Available for backward compatibility.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| classic_link_vpc_security_groups | core | array<string> | Available for backward compatibility.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| created_time                     | core | timestamp     | The creation date and time for the launch configuration.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| ebs_optimized                    | core | bool          | Specifies whether the launch configuration is optimized for EBS I/O (true) or not (false). For more information, see Amazon EBS-optimized instances in the Amazon EC2 User Guide.                                                                                                                                                                                                                                                                                                                                                                                                                      |
| iam_instance_profile             | core | string        | The name or the Amazon Resource Name (ARN) of the instance profile associated with the IAM role for the instance. The instance profile contains the IAM role. For more information, see IAM role for applications that run on Amazon EC2 instances in the Amazon EC2 Auto Scaling User Guide.                                                                                                                                                                                                                                                                                                          |
| image_id                         | core | string        | The ID of the Amazon Machine Image (AMI) to use to launch your EC2 instances. For more information, see Find a Linux AMI in the Amazon EC2 User Guide.                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| instance_monitoring              | core | json          | Controls whether instances in this group are launched with detailed (true) or basic (false) monitoring. For more information, see Configure monitoring for Auto Scaling instances in the Amazon EC2 Auto Scaling User Guide.                                                                                                                                                                                                                                                                                                                                                                           |
| instance_type                    | core | string        | The instance type for the instances. For information about available instance types, see Available instance types in the Amazon EC2 User Guide.                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| kernel_id                        | core | string        | The ID of the kernel associated with the AMI.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| key_name                         | core | string        | The name of the key pair. For more information, see Amazon EC2 key pairs and Amazon EC2 instances in the Amazon EC2 User Guide.                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| launch_configuration_arn         | core | string        | The Amazon Resource Name (ARN) of the launch configuration.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| launch_configuration_name        | core | string        | The name of the launch configuration.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| metadata_options                 | core | json          | The metadata options for the instances. For more information, see Configure the instance metadata options in the Amazon EC2 Auto Scaling User Guide.                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| placement_tenancy                | core | string        | The tenancy of the instance, either default or dedicated. An instance with dedicated tenancy runs on isolated, single-tenant hardware and can only be launched into a VPC.                                                                                                                                                                                                                                                                                                                                                                                                                             |
| ramdisk_id                       | core | string        | The ID of the RAM disk associated with the AMI.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| security_groups                  | core | array<string> | A list that contains the security groups to assign to the instances in the Auto Scaling group. For more information, see Control traffic to your Amazon Web Services resources using security groups in the Amazon Virtual Private Cloud User Guide.                                                                                                                                                                                                                                                                                                                                                   |
| spot_price                       | core | string        | The maximum hourly price to be paid for any Spot Instance launched to fulfill the request. Spot Instances are launched when the price you specify exceeds the current Spot price. For more information, see Requesting Spot Instances for fault-tolerant and flexible applications in the Amazon EC2 Auto Scaling User Guide.                                                                                                                                                                                                                                                                          |
| tags                             | core | hstore_csv    |
| user_data                        | core | string        | The user data to make available to the launched EC2 instances. For more information, see Instance metadata and user data in the Amazon EC2 User Guide. If you are using a command line tool, base64-encoding is performed for you, and you can load the text from a file. Otherwise, you must provide base64-encoded text. User data is limited to 16 KB.                                                                                                                                                                                                                                              |