Best way to manage code changes for application in Amazon EC2 with Auto Scaling

Question

I have multiple instances running behind Load balancer with Auto Scaling in AWS.

Now, if I have to push some code changes to these instances and any new instances that m

Answer 1

It appears you can manually double auto scaling group size, it will create EC2 instances using AMI from current Launch Configuration. Now if you decrease auto scaling group back to the previous size, old instances will be killed and only instances created from a new AMI will survive.