Posted about 3 years ago. Visible to the public. Repeats.

Whenever: Don't forget leading zeros for hours!

Whenever is a Ruby gem that provides a nicer syntax for writing and deploying cron jobs.

Leading zeros are important for whenever if you use the 24-hours format!

This schedule.rb:

every, at: '3:00', roles: [:primary_cron] do runner 'Scheduler.delay.do_things' end

will lead to this crontab entry (crontab -l):

0 15 * * * /bin/bash -l -c 'cd /var/www/my-project/releases/20180607182518 && bin/rails runner -e production '\''Scheduler.delay.do_things'\'''

Which would run on 3pm instead of 3am.

Using the leading zero will lead to the expected behaviour:


every, at: '03:00', roles: [:primary_cron] do runner 'Scheduler.delay.do_things' end

crontab -l:

0 3 * * * /bin/bash -l -c 'cd /var/www/my-project/releases/20180608095252 && bin/rails runner -e staging '\''Scheduler.delay.do_things'\'''

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Owner of this card:

Judith Roth
Last edit:
about 3 years ago
by Thomas Eisenbarth
About this deck:
We are makandra and do test-driven, agile Ruby on Rails software development.
License for source code
Posted by Judith Roth to makandra dev
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