aws-cdk-lib.aws_autoscaling.LaunchTemplateOverrides

interface LaunchTemplateOverrides

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.NETAmazon.CDK.AWS.AutoScaling.LaunchTemplateOverrides
Gogithub.com/aws/aws-cdk-go/awscdk/v2/awsautoscaling#LaunchTemplateOverrides
Javasoftware.amazon.awscdk.services.autoscaling.LaunchTemplateOverrides
Pythonaws_cdk.aws_autoscaling.LaunchTemplateOverrides
TypeScript (source)aws-cdk-lib » aws_autoscaling » LaunchTemplateOverrides

LaunchTemplateOverrides is a subproperty of LaunchTemplate that describes an override for a launch template.

Example

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import { aws_autoscaling as autoscaling } from 'aws-cdk-lib';
import { aws_ec2 as ec2 } from 'aws-cdk-lib';

declare const instanceType: ec2.InstanceType;
declare const launchTemplate: ec2.LaunchTemplate;
const launchTemplateOverrides: autoscaling.LaunchTemplateOverrides = {
  instanceType: instanceType,

  // the properties below are optional
  launchTemplate: launchTemplate,
  weightedCapacity: 123,
};

Properties

NameTypeDescription
instanceTypeInstanceTypeThe instance type, such as m3.xlarge. You must use an instance type that is supported in your requested Region and Availability Zones.
launchTemplate?ILaunchTemplateProvides the launch template to be used when launching the instance type.
weightedCapacity?numberThe number of capacity units provided by the specified instance type in terms of virtual CPUs, memory, storage, throughput, or other relative performance characteristic.

instanceType

Type: InstanceType

The instance type, such as m3.xlarge. You must use an instance type that is supported in your requested Region and Availability Zones.


launchTemplate?

Type: ILaunchTemplate (optional, default: Do not override launch template)

Provides the launch template to be used when launching the instance type.

For example, some instance types might require a launch template with a different AMI. If not provided, Amazon EC2 Auto Scaling uses the launch template that's defined for your mixed instances policy.


weightedCapacity?

Type: number (optional, default: Do not provide weight)

The number of capacity units provided by the specified instance type in terms of virtual CPUs, memory, storage, throughput, or other relative performance characteristic.

When a Spot or On-Demand Instance is provisioned, the capacity units count toward the desired capacity. Amazon EC2 Auto Scaling provisions instances until the desired capacity is totally fulfilled, even if this results in an overage. Value must be in the range of 1 to 999.

For example, If there are 2 units remaining to fulfill capacity, and Amazon EC2 Auto Scaling can only provision an instance with a WeightedCapacity of 5 units, the instance is provisioned, and the desired capacity is exceeded by 3 units.

See also: https://docs.aws.amazon.com/autoscaling/ec2/userguide/asg-instance-weighting.html