Cancel an instance refresh using the AWS Management Console or AWS CLI - Amazon EC2 Auto Scaling
Cancel an instance refresh (console)Cancel an instance refresh (AWS CLI)

Cancel an instance refresh using the AWS Management Console or AWS CLI

You can cancel an instance refresh that is still in progress. You can't cancel it after it's finished.

Canceling an instance refresh does not roll back any instances that were already replaced. To roll back the changes to your instances, perform a rollback instead. For more information, see Undo changes with a manual or auto rollback.

Cancel an instance refresh (console)

To cancel an instance refresh

  1. Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/, and choose Auto Scaling Groups from the navigation pane.

  2. Select the check box next to the Auto Scaling group.

  3. On the Instance refresh tab, in Active instance refresh, choose Actions, Cancel.

  4. When prompted for confirmation, choose Confirm.

The status of the instance refresh is set to Cancelling. After the cancellation is complete, the status of the instance refresh is set to Cancelled.

Cancel an instance refresh (AWS CLI)

To cancel an instance refresh

Use the cancel-instance-refresh command from the AWS CLI and provide the Auto Scaling group name. 

aws autoscaling cancel-instance-refresh --auto-scaling-group-name my-asg

Example output:

{
    "InstanceRefreshId": "08b91cf7-8fa6-48af-b6a6-d227f40f1b9b"
}
To cancel an instance refresh without waiting for transitioning instances

Use the --no-wait-for-transitioning-instances option with the cancel-instance-refresh command from the AWS CLI to cancel an instance refresh without waiting for transitioning instances.

aws autoscaling cancel-instance-refresh —auto-scaling-group-name my-asg --no-wait-for-transitioning-instances

By default, when you cancel an instance refresh, Amazon EC2 Auto Scaling waits for any in-flight launches and terminations to complete before setting the status to Cancelled. If you have instances with long draining periods or need to start a new instance refresh immediately, you can use the command so that you don’t have to wait for these transitioning operations.

When you use this option, the instance refresh status changes to Cancelled, allowing you to start a new instance refresh. Any in-flight launches and terminations continue in the background.