Amazon EC2 autoscaling down with graceful shutdown?

Question

We\'re looking at using EC2 autoscaling to deal with spikes in load. In our case we want to scale up instances based on an SQS queue size and then down scale with the queue

Answer 1

use replaceunhealty option in autoscaling.

refer: http://alestic.com/2011/11/ec2-schedule-instance

particularly see this comment.