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Class: Aws::AutoScaling::Types::LaunchTemplate

  • Object
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Defined in:



When passing LaunchTemplate as input to an Aws::Client method, you can use a vanilla Hash:

  launch_template_specification: {
    launch_template_id: "XmlStringMaxLen255",
    launch_template_name: "LaunchTemplateName",
    version: "XmlStringMaxLen255",
  overrides: [
      instance_type: "XmlStringMaxLen255",
      weighted_capacity: "XmlStringMaxLen32",

Describes a launch template and overrides.

The overrides are used to override the instance type specified by the launch template with multiple instance types that can be used to launch On-Demand Instances and Spot Instances.

When you update the launch template or overrides, existing Amazon EC2 instances continue to run. When scale out occurs, Amazon EC2 Auto Scaling launches instances to match the new settings. When scale in occurs, Amazon EC2 Auto Scaling terminates instances according to the group's termination policies.

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Instance Attribute Summary collapse

Instance Attribute Details


The launch template to use. You must specify either the launch template ID or launch template name in the request.



Any parameters that you specify override the same parameters in the launch template. Currently, the only supported override is instance type. You can specify between 1 and 20 instance types.

If not provided, Amazon EC2 Auto Scaling will use the instance type specified in the launch template to launch instances.