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Showing content from https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateLaunchTemplate.html below:

CreateLaunchTemplate - Amazon Elastic Compute Cloud

CreateLaunchTemplate

Creates a launch template.

A launch template contains the parameters to launch an instance. When you launch an instance using RunInstances, you can specify a launch template instead of providing the launch parameters in the request. For more information, see Store instance launch parameters in Amazon EC2 launch templates in the Amazon EC2 User Guide.

To clone an existing launch template as the basis for a new launch template, use the Amazon EC2 console. The API, SDKs, and CLI do not support cloning a template. For more information, see Create a launch template from an existing launch template in the Amazon EC2 User Guide.

Request Parameters

The following parameters are for this specific action. For more information about required and optional parameters that are common to all actions, see Common Query Parameters.

ClientToken

Unique, case-sensitive identifier you provide to ensure the idempotency of the request. If a client token isn't specified, a randomly generated token is used in the request to ensure idempotency.

For more information, see Ensuring idempotency.

Constraint: Maximum 128 ASCII characters.

Type: String

Required: No

DryRun

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.

Type: Boolean

Required: No

LaunchTemplateData

The information for the launch template.

Type: RequestLaunchTemplateData object

Required: Yes

LaunchTemplateName

A name for the launch template.

Type: String

Length Constraints: Minimum length of 3. Maximum length of 128.

Pattern: [a-zA-Z0-9\(\)\.\-/_]+

Required: Yes

Operator

Reserved for internal use.

Type: OperatorRequest object

Required: No

TagSpecification.N

The tags to apply to the launch template on creation. To tag the launch template, the resource type must be launch-template.

To specify the tags for the resources that are created when an instance is launched, you must use the TagSpecifications parameter in the launch template data structure.

Type: Array of TagSpecification objects

Required: No

VersionDescription

A description for the first version of the launch template.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 255.

Required: No

Response Elements

The following elements are returned by the service.

launchTemplate

Information about the launch template.

Type: LaunchTemplate object

requestId

The ID of the request.

Type: String

warning

If the launch template contains parameters or parameter combinations that are not valid, an error code and an error message are returned for each issue that's found.

Type: ValidationWarning object

Errors

For information about the errors that are common to all actions, see Common client error codes.

Examples Example 1

The following example creates a launch template that specifies AMI ami-1a2b3c4d and an instance type of t2.micro.

Sample Request

https://ec2.amazonaws.com/?Action=CreateLaunchTemplate
&LaunchTemplateName=MyLaunchTemplate
&VersionDescription=FirstVersion
&LaunchTemplateData.ImageId=ami-1a2b3c4d
&LaunchTemplateData.InstanceType=t2.micro
&AUTHPARAMS

Sample Response

<CreateLaunchTemplateResponse xmlns="http://ec2.amazonaws.com/doc/2016-11-15/">
    <requestId>39f602bc-7580-4239-a6d8-af56example</requestId>
    <launchTemplate>
        <createTime>2017-10-31T11:38:52.000Z</createTime>
        <createdBy>arn:aws:iam::123456789012:root</createdBy>
        <defaultVersionNumber>1</defaultVersionNumber>
        <latestVersionNumber>1</latestVersionNumber>
        <launchTemplateId>lt-0a20c965061f64abc</launchTemplateId>
        <launchTemplateName>MyLaunchTemplate</launchTemplateName>
    </launchTemplate>
</CreateLaunchTemplateResponse>

Example 2

The following example creates a launch template that specifies the subnet in which to launch the instance (subnet-7b16de0c), assigns a public IP address and an IPv6 address to the instance, and creates a tag for the instance (Name=webserver).

Sample Request

https://ec2.amazonaws.com/?Action=CreateLaunchTemplate
&LaunchTemplateName=TemplateForWebServer
&VersionDescription=WebVersion1
&LaunchTemplateData.ImageId=ami-8c1be5f6
&LaunchTemplateData.InstanceType=t2.micro
&LaunchTemplateData.NetworkInterface.1.AssociatePublicIpAddress=true
&LaunchTemplateData.NetworkInterface.1.DeviceIndex=0
&LaunchTemplateData.NetworkInterface.1.SubnetId=subnet-7b16de0c
&LaunchTemplateData.NetworkInterface.1.Ipv6AddressCount=1
&LaunchTemplateData.TagSpecification.1.ResourceType=instance
&LaunchTemplateData.TagSpecification.1.Tag.1.Key=Name
&LaunchTemplateData.TagSpecification.1.Tag.1.Value=webserver
&AUTHPARAMS