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Reputation: 2209

cron on resque scheduler not working on preferred intervals

I need to run a task precisely on 10AM every thursday,

on resque yaml file I am trying this

cron: "* 10 * * 4 * America/New_York"  # expecting this to shoot out every thursday..

Was that correct? I can't test it out as I can't wait for such an interval, so I tried to test it at least for every 5 mins but it isn't very promising

cron: "5 * * * * *"  # It runs for every single minute..

any help or direction is appreciated.

I followed this 

* * * * * *
| | | | | | 
| | | | | +-- Year              (range: 1900-3000)
| | | | +---- Day of the Week   (range: 1-7, 1 standing for Monday)
| | | +------ Month of the Year (range: 1-12)
| | +-------- Day of the Month  (range: 1-31)
| +---------- Hour              (range: 0-23)
+------------ Minute            (range: 0-59)

Upvotes: 0

Views: 1845

Answers (2)

Thomas D.
Thomas D.

Reputation: 1061

Regex expressions can have 5 or 6 placeholders. Not every framework/implementation supports both ways so you have to check which format you need.

Your expression cron: "5 * * * * *" would run every minute exactly 5 seconds past the minute. I think in your case, you could use only 5 placeholders which means that you can not schedule for seconds but only for minutes.

Also, to run something every 5 minutes, you need the following expression:

cron: "*/5 * * * *"

Every 10AM on thursday should be:

cron: "0 10 * * 4 America/New_York"

Meaning:

  • every thursday (4)
  • every month
  • every day
  • 10 hours
  • 0 minutes

(I have not tested this.)

Upvotes: 2

c3st7n
c3st7n

Reputation: 1961

There are normally only 5 fields for cron. The implementation of cron you are using allows 6 fields but the first field stands for seconds not minutes. From https://github.com/resque/resque-scheduler:

NOTE: Six parameter cron's are also supported (as they supported by rufus-scheduler which powers the resque-scheduler process). This allows you to schedule jobs per second (ie: "30 * * * * *" would fire a job every 30 seconds past the minute).

So you should drop to the normal 5 fields and use the @thomas-d's answer.

Traditional 5 field format is:

Minute Hour Day_of_the_Month Month_of_the_Year Day_of_the_Week

Upvotes: 2

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