But its tough to decide on to estimate how long a machine might take to
reach STOPPED state.
Anyway other option would be check the node state again and send the
confirmation.
Yes, sorry, this is what I meant. I agree that inserting a "hopeful
pause" is probably too brittle; what is probably needed here is
something like:
for (i = 0 to max_attempts) {
if stopped(instance) break
sleep(pause_time)
}
The AWS API more or less "recommends" this as an approach by providing
an explicit command for this:
http://docs.aws.amazon.com/cli/latest/reference/ec2/wait/instance-stopped.html
Regards
ap