Template – https://github.com/sangitaccount/AWS/blob/master/cfn-templates/AWS_AutoScale_ELB_Notification.template used to create single EC2 Instance with AutoScaling behind ELB.
EC2 Instance provisioned ( take a note of AMI ).
Using the same Cloud Formation Template I’ve update the stack with new AMI
I did take screenshots of instance changes ( it is keeping the old instance alive till the new instance is in to the action ).
Load Balancer and AutoScale configuration Status