create-launch-configuration¶

Description¶

Creates a launch configuration.

If you exceed your maximum limit of launch configurations, the call fails. To query this limit, call the DescribeAccountLimits API. For information about updating this limit, see Quotas for Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide .

For more information, see Launch configurations in the Amazon EC2 Auto Scaling User Guide .

Synopsis¶

  create-launch-configuration
--launch-configuration-name <value>
[--image-id <value>]
[--key-name <value>]
[--security-groups <value>]
[--classic-link-vpc-id <value>]
[--classic-link-vpc-security-groups <value>]
[--user-data <value>]
[--instance-id <value>]
[--instance-type <value>]
[--kernel-id <value>]
[--ramdisk-id <value>]
[--block-device-mappings <value>]
[--instance-monitoring <value>]
[--spot-price <value>]
[--iam-instance-profile <value>]
[--ebs-optimized | --no-ebs-optimized]
[--associate-public-ip-address | --no-associate-public-ip-address]
[--placement-tenancy <value>]
[--metadata-options <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]

Options¶

--launch-configuration-name (string)

The name of the launch configuration. This name must be unique per Region per account.

--image-id (string)

The ID of the Amazon Machine Image (AMI) that was assigned during registration. For more information, see Finding a Linux AMI in the Amazon EC2 User Guide for Linux Instances .

If you specify InstanceId , an ImageId is not required.

--key-name (string)

The name of the key pair. For more information, see Amazon EC2 key pairs and Linux instances in the Amazon EC2 User Guide for Linux Instances .

--security-groups (list)

A list that contains the security group IDs to assign to the instances in the Auto Scaling group. For more information, see Control traffic to resources using security groups in the Amazon Virtual Private Cloud User Guide .

(string)

Syntax:

"string" "string" ...

--classic-link-vpc-id (string)

EC2-Classic retires on August 15, 2022. This property is not supported after that date.

The ID of a ClassicLink-enabled VPC to link your EC2-Classic instances to. For more information, see ClassicLink in the Amazon EC2 User Guide for Linux Instances .

--classic-link-vpc-security-groups (list)

EC2-Classic retires on August 15, 2022. This property is not supported after that date.

The IDs of one or more security groups for the specified ClassicLink-enabled VPC.

If you specify the ClassicLinkVPCId property, you must specify ClassicLinkVPCSecurityGroups .

(string)

Syntax:

"string" "string" ...

--user-data (string)

The user data to make available to the launched EC2 instances. For more information, see Instance metadata and user data (Linux) and Instance metadata and user data (Windows). 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.

--instance-id (string)

The ID of the instance to use to create the launch configuration. The new launch configuration derives attributes from the instance, except for the block device mapping.

To create a launch configuration with a block device mapping or override any other instance attributes, specify them as part of the same request.

For more information, see Creating a launch configuration using an EC2 instance in the Amazon EC2 Auto Scaling User Guide .

--instance-type (string)

Specifies the instance type of the EC2 instance. For information about available instance types, see Available instance types in the Amazon EC2 User Guide for Linux Instances .

If you specify InstanceId , an InstanceType is not required.

--kernel-id (string)

The ID of the kernel associated with the AMI.

Note

We recommend that you use PV-GRUB instead of kernels and RAM disks. For more information, see User provided kernels in the Amazon EC2 User Guide for Linux Instances .

--ramdisk-id (string)

The ID of the RAM disk to select.

Note

We recommend that you use PV-GRUB instead of kernels and RAM disks. For more information, see User provided kernels in the Amazon EC2 User Guide for Linux Instances .

--block-device-mappings (list)

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 for Linux Instances .

(structure)

Describes a block device mapping.

VirtualName -> (string)

The name of the instance store volume (virtual device) to attach to an instance at launch. The name must be in the form ephemeral*X* where X is a number starting from zero (0), for example, ephemeral0 .

DeviceName -> (string)

The device name assigned to the volume (for example, /dev/sdh or xvdh ). For more information, see Device naming on Linux instances in the Amazon EC2 User Guide for Linux Instances .

Note

To define a block device mapping, set the device name and exactly one of the following properties: Ebs , NoDevice , or VirtualName .

Ebs -> (structure)

Information to attach an EBS volume to an instance at launch.

SnapshotId -> (string)

The snapshot ID of the volume to use.

You must specify either a VolumeSize or a SnapshotId .

VolumeSize -> (integer)

The volume size, in GiBs. The following are the supported volumes sizes for each volume type:

gp2 and gp3 : 1-16,384

io1 : 4-16,384

st1 and sc1 : 125-16,384

standard : 1-1,024

You must specify either a SnapshotId or a VolumeSize . If you specify both SnapshotId and VolumeSize , the volume size must be equal or greater than the size of the snapshot.

VolumeType -> (string)

The volume type. For more information, see Amazon EBS volume types in the Amazon EC2 User Guide for Linux Instances .

Valid values: standard | io1 | gp2 | st1 | sc1 | gp3

DeleteOnTermination -> (boolean)

Indicates whether the volume is deleted on instance termination. For Amazon EC2 Auto Scaling, the default value is true .

Iops -> (integer)

The number of input/output (I/O) operations per second (IOPS) to provision for the volume. For gp3 and io1 volumes, this represents the number of IOPS that are provisioned for the volume. For gp2 volumes, this represents the baseline performance of the volume and the rate at which the volume accumulates I/O credits for bursting.

The following are the supported values for each volume type:

gp3 : 3,000-16,000 IOPS

io1 : 100-64,000 IOPS

For io1 volumes, we guarantee 64,000 IOPS only for Instances built on the Nitro System . Other instance families guarantee performance up to 32,000 IOPS.

Iops is supported when the volume type is gp3 or io1 and required only when the volume type is io1 . (Not used with standard , gp2 , st1 , or sc1 volumes.)

Encrypted -> (boolean)

Specifies whether the volume should be encrypted. Encrypted EBS volumes can only be attached to instances that support Amazon EBS encryption. For more information, see Supported instance types . If your AMI uses encrypted volumes, you can also only launch it on supported instance types.

Note

If you are creating a volume from a snapshot, you cannot create an unencrypted volume from an encrypted snapshot. Also, you cannot specify a KMS key ID when using a launch configuration.

If you enable encryption by default, the EBS volumes that you create are always encrypted, either using the Amazon Web Services managed KMS key or a customer-managed KMS key, regardless of whether the snapshot was encrypted.

For more information, see Use Amazon Web Services KMS keys to encrypt Amazon EBS volumes in the Amazon EC2 Auto Scaling User Guide .

Throughput -> (integer)

The throughput (MiBps) to provision for a gp3 volume.

NoDevice -> (boolean)

Setting this value to true prevents a volume that is included in the block device mapping of the AMI from being mapped to the specified device name at launch.

If NoDevice is true for the root device, instances might fail the EC2 health check. In that case, Amazon EC2 Auto Scaling launches replacement instances.

Shorthand Syntax:

VirtualName=string,DeviceName=string,Ebs={SnapshotId=string,VolumeSize=integer,VolumeType=string,DeleteOnTermination=boolean,Iops=integer,Encrypted=boolean,Throughput=integer},NoDevice=boolean ...

JSON Syntax:

[
  {
    "VirtualName": "string",
    "DeviceName": "string",
    "Ebs": {
      "SnapshotId": "string",
      "VolumeSize": integer,
      "VolumeType": "string",
      "DeleteOnTermination": true|false,
      "Iops": integer,
      "Encrypted": true|false,
      "Throughput": integer
    },
    "NoDevice": true|false
  }
  ...
]

--instance-monitoring (structure)

Controls whether instances in this group are launched with detailed (true ) or basic (false ) monitoring.

The default value is true (enabled).

Warning

When detailed monitoring is enabled, Amazon CloudWatch generates metrics every minute and your account is charged a fee. When you disable detailed monitoring, CloudWatch generates metrics every 5 minutes. For more information, see Configure Monitoring for Auto Scaling Instances in the Amazon EC2 Auto Scaling User Guide .

Enabled -> (boolean)

If true , detailed monitoring is enabled. Otherwise, basic monitoring is enabled.

Shorthand Syntax:

Enabled=boolean

JSON Syntax:

{
  "Enabled": true|false
}

--spot-price (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 Request Spot Instances for fault-tolerant and flexible applications in the Amazon EC2 Auto Scaling User Guide .

Valid Range: Minimum value of 0.001

Note

When you change your maximum price by creating a new launch configuration, running instances will continue to run as long as the maximum price for those running instances is higher than the current Spot price.

--iam-instance-profile (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 .

--ebs-optimized | --no-ebs-optimized (boolean)

Specifies whether the launch configuration is optimized for EBS I/O (true ) or not (false ). The optimization provides dedicated throughput to Amazon EBS and an optimized configuration stack to provide optimal I/O performance. This optimization is not available with all instance types. Additional fees are incurred when you enable EBS optimization for an instance type that is not EBS-optimized by default. For more information, see Amazon EBS-optimized instances in the Amazon EC2 User Guide for Linux Instances .

The default value is false .

--associate-public-ip-address | --no-associate-public-ip-address (boolean)

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.

If you specify true , each instance in the Auto Scaling group receives a unique public IPv4 address. For more information, see Launching Auto Scaling instances in a VPC in the Amazon EC2 Auto Scaling User Guide .

If you specify this property, you must specify at least one subnet for VPCZoneIdentifier when you create your group.

--placement-tenancy (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. To launch dedicated instances into a shared tenancy VPC (a VPC with the instance placement tenancy attribute set to default ), you must set the value of this property to dedicated . For more information, see Configuring instance tenancy with Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide .

If you specify PlacementTenancy , you must specify at least one subnet for VPCZoneIdentifier when you create your group.

Valid values: default | dedicated

--metadata-options (structure)

The metadata options for the instances. For more information, see Configuring the Instance Metadata Options in the Amazon EC2 Auto Scaling User Guide .

HttpTokens -> (string)

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.

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

HttpEndpoint -> (string)

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.

Shorthand Syntax:

HttpTokens=string,HttpPutResponseHopLimit=integer,HttpEndpoint=string

JSON Syntax:

{
  "HttpTokens": "optional"|"required",
  "HttpPutResponseHopLimit": integer,
  "HttpEndpoint": "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.

See ‘aws help’ for descriptions of global 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 create a launch configuration

This example creates a simple launch configuration.

aws autoscaling create-launch-configuration \
    --launch-configuration-name my-lc \
    --image-id ami-04d5cc9b88example \
    --instance-type m5.large