amazon web services - Terminating instance with AWS auto scaling? -


i have no problem spinning instance using time scheduling feature of aws auto scale:

as-put-scheduled-update-group-action start     --auto-scaling-group myasg     --min-size 1     --max-size 1     --recurrence "20 15 * * *"

but when try , schedule instance terminated, nothing happens:

as-put-scheduled-update-group-action stop     --auto-scaling-group myasg     --min-size 0     --max-size 0     --recurrence "50 15 * * *"

where going wrong?

thanks steffen. delay wasn't issue, might have been case of me trying more 4 schedules in 1 day though! completeness, these steps necessary spin 1 instance , take down few minutes later:

as-create-launch-config mylc     --image-id ami-f2191786     --instance-type t1.micro as-create-auto-scaling-group myasg     --launch-configuration mylc     --availability-zones eu-west-1a     --min-size 0     --max-size 1 as-put-scheduled-update-group-action start     --auto-scaling-group myasg     --min-size 1     --max-size 1     --desired-capacity 1     --recurrence "16 10 7 5 2" as-put-scheduled-update-group-action stop     --auto-scaling-group myasg     --min-size 0     --max-size 0     --desired-capacity 0     --recurrence "2 10 7 5 2"

your auto scaling usage such correct: while respective example scale based on schedule using --desired-capacity parameter rather adjusting --max-size (see section create schedule scaling actions), should work regardless indeed - i've replayed example ensure , works fine me.

maybe experiencing implied api delays, see section programming considerations scheduled actions:

  • a scheduled action executes within seconds. however, action may delayed 2 minutes scheduled start time. because auto scaling executes actions within auto scaling group in order specified, scheduled actions scheduled start times close each other may take longer execute. [emphasis mine]

in regard it's worth noting scheduled action has been visible within seconds via as-describe-scaling-activities --auto-scaling-group myasg indeed, ongoing termination of instance became visible ~30 seconds later in case, might want check via api/cli see whether action executed - accordingly approach see details errors might have happened in case.


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