Add custom schedule to AWS ec2 lifecycle manager

Question

How can I use cron expression to schedule quarterly backup? Like Backup at 12:00AM on every 1st January, 1st April, 1st July and 1st October.

Answer 1

Try setting up the event with this:

cron(0 12 1 1/3 ? *)

This translates to:

1/3 -> every third month

1 -> on the first day of the month

0 12 at 12 PM

One of the day-of-month or day-of-week values must be a question mark (?)

PS. Keep in mind that time is in UTC+0.

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