"H 5 * * 7" cron in Jenkins groovy script

Question

I am trying to understand when this trigger runs in Jenkins groovy script. Seems to me that Jenkins groovy script has some DSL for cron. Does anyone know when this cron job is triggered?

triggers {
cron('H 5 * * 7')
}

https://www.jenkins.io/doc/book/pipeline/syntax/#cron-syntax — cfrick, Mar 26 '21 at 12:01

score 3 · Answer 1 · answered Mar 26 '21 at 20:35

In H 5 * * 7 the H means hash. You can have digit in the first place, but H allows to distribute the load better.

H = minute when less load is expected, Jenkins will propose it the first time, after that it will stay more or less the same, if there are available agents to handle it.
5 = hour,
* = any value (every day),
* = any value (every month),
7 = 7th day of week (Sunday).

Reference: Spread load evenly by using ‘H * * * *’ rather than ‘5 * * * *’

score 2 · Answer 2 · answered Mar 26 '21 at 14:41

2

You can test it using the CRONTab tester. This means to start at 5:00 on every sunday

https://crontab.guru/#0_5_*_*_7

answered Mar 26 '21 at 14:41

Kaveesh

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6
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May be need to add more to this site, for example if we use H * * * * What would be the H meaning it is not able to talk! – PavanDevarakonda Jul 31 '23 at 05:19

"H 5 * * 7" cron in Jenkins groovy script

2 Answers2