Amazon AppStream 2.0 and Application Auto Scaling - Application Auto Scaling
Service-linked roleService principalRegistering AppStream 2.0 fleets as scalable targets with Application Auto ScalingRelated resources

Amazon AppStream 2.0 and Application Auto Scaling

You can scale AppStream 2.0 fleets using target tracking scaling policies, step scaling policies, and scheduled scaling.

Use the following information to help you integrate AppStream 2.0 with Application Auto Scaling.

Service-linked role created for AppStream 2.0

The following service-linked role is automatically created in your AWS account when registering AppStream 2.0 resources as scalable targets with Application Auto Scaling. This role allows Application Auto Scaling to perform supported operations within your account. For more information, see Service-linked roles for Application Auto Scaling.

  • AWSServiceRoleForApplicationAutoScaling_AppStreamFleet

Service principal used by the service-linked role

The service-linked role in the previous section can be assumed only by the service principal authorized by the trust relationships defined for the role. The service-linked role used by Application Auto Scaling grants access to the following service principal:

  • appstream.application-autoscaling.amazonaws.com

Registering AppStream 2.0 fleets as scalable targets with Application Auto Scaling

Application Auto Scaling requires a scalable target before you can create scaling policies or scheduled actions for an AppStream 2.0 fleet. A scalable target is a resource that Application Auto Scaling can scale out and scale in. Scalable targets are uniquely identified by the combination of resource ID, scalable dimension, and namespace.

If you configure auto scaling using the AppStream 2.0 console, then AppStream 2.0 automatically registers a scalable target for you.

If you want to configure auto scaling using the AWS CLI or one of the AWS SDKs, you can use the following options:

  • AWS CLI:

    Call the register-scalable-target command for an AppStream 2.0 fleet. The following example registers the desired capacity of a fleet called sample-fleet, with a minimum capacity of one fleet instance and a maximum capacity of five fleet instances.

    aws application-autoscaling register-scalable-target \
   --service-namespace appstream \
   --scalable-dimension appstream:fleet:DesiredCapacity \
   --resource-id fleet/sample-fleet \
   --min-capacity 1 \
   --max-capacity 5

    If successful, this command returns the ARN of the scalable target.

    {
    "ScalableTargetARN": "arn:aws:application-autoscaling:region:account-id:scalable-target/1234abcd56ab78cd901ef1234567890ab123"
}

  • AWS SDK:

    Call the RegisterScalableTarget operation and provide ResourceId, ScalableDimension, ServiceNamespace, MinCapacity, and MaxCapacity as parameters.

If you are just getting started with Application Auto Scaling, you can find additional useful information about scaling your AppStream 2.0 resources in the following documentation:

Fleet Auto Scaling for AppStream 2.0 in the Amazon AppStream 2.0 Administration Guide