AWS Cloud Formation not replacing insances

Question

I have created an autoscaling group with aws cloud formation but anytime I change the userdata, the instances don't get replaced. Is there a way to force this behavior?

Answer 1

You need to implement instance-refresh for ASG: https://docs.aws.amazon.com/autoscaling/ec2/userguide/asg-instance-refresh.html

OR

Manually you need to terminate the instance and new instance should automatically spin-up depending on ASG configuration. You should able to see userdata