CloudFormation AutoScalingGroup not waiting for signal on update/scale-up

Question

I\'m working with a CloudFormation template that brings up as many instances as I request, and want to wait for them to finish initialising (via User Data) before the stack crea

Answer 1

the rolling update only works for existing instances. The documentation says:

Rolling updates enable you to specify whether AWS CloudFormation updates instances that are in an Auto Scaling group in batches or all at once.

So to test this, create a stack based on your template. than make a small modification to the launch config (e.g. set sleep 120 to 121) and update the stack. now you should see a rolling update.