topic Re: Alert based on Cron Expression: Run At every 15th minute from 1 through 59 in Splunk ITSI

Alert based on Cron Expression: Run At every 15th minute from 1 through 59

RR5027153 — Sun, 09 Jun 2019 08:08:42 GMT

Hi ,I am trying to schedule an alert to Run At every 15th minute from 1 through 59 via. below CRON expression but getting Invalid cron_schedule error .

1/15 * * * *

CronExpression looks ok to me - https://crontab.guru/#1/15_*_*_*_*

Re: Alert based on Cron Expression: Run At every 15th minute from 1 through 59

richgalloway — Sun, 09 Jun 2019 17:23:59 GMT

I've had the same experience. Try one of these workarounds:

1-59/15 * * * *

1,16,31,46 * * * *

Re: Alert based on Cron Expression: Run At every 15th minute from 1 through 59

VatsalJagani — Mon, 10 Jun 2019 06:52:59 GMT

@RR5027153 - 1/15 is wrong standard in cron, check https://crontab.guru/#1/15_*_*_*_*.
Try any solution given by @richgalloway or try */15 * * * *.

Re: Alert based on Cron Expression: Run At every 15th minute from 1 through 59

danielswan — Tue, 23 Jul 2019 12:02:54 GMT

@VatsalJagani You should post that as an answer, so people can see it more clearly and you'll get reputation points. It is the best solution.

Re: Alert based on Cron Expression: Run At every 15th minute from 1 through 59

danielswan — Tue, 23 Jul 2019 12:09:43 GMT

The reason this doesn't work is because the 1 before the slash is specifying the first minute of the hour only. The /15 is being prohibited by the 1.
If you can only run on the first minute, then you can't run again 15 minutes later because it's not allowed.

Do you require it to wait until a minute after the hour, or can it just run every minute?