Polling in Jenkins

[Hector Magnanao]

I'm using Jenkins 1.625.2

How do I setup polling in Jenkins so that my build will execute whenever a file is checked in ? I tried to setup polling but when I choose Poll SCM, it asked for a schedule.  Do I have to put in a schedule or is there a way to setup polling without schedule ? I want my build to execute whenever a file is checked in.

[Daniel Beck]

If you're polling, you need to define a schedule -- Jenkins needs to know how often to poll, after all. This can be as simple as '* * * * *', which means "every minute".

Consider looking into (SCM specific) post-commit hooks, those notify Jenkins of changes immediately, and don't require Jenkins to poll all the time (which as you can imagine, doesn't scale well).

On 16.02.2016, at 19:06, Hector Magnanao <hector....@sap.com> wrote:

> I'm using Jenkins 1.625.2
>
> How do I setup polling in Jenkins so that my build will execute whenever a file is checked in ? I tried to setup polling but when I choose Poll SCM, it asked for a schedule. Do I have to put in a schedule or is there a way to setup polling without schedule ? I want my build to execute whenever a file is checked in.
>

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[Hector Magnanao]

I tried polling with a schedule like H/10 * * * *  which means "every 10 minutes".  But polling doesn't seem to work. 

How can I setup a post-commit hook to notify Jenkins of checkins. ?

[John Mellor]

Hector stated:

Ø  I tried polling with a schedule like H/10 * * * *  which means "every 10 minutes".  But polling doesn't seem to work. 

 

H/10 * * * * should give you a pooling cycle of about every 6 minutes, not 10.  I use something similar because my current git repo does not allow me to insert a hook script.  It works correctly, so I suspect your build triggering problem is elsewhere.

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[Hector Magnanao]

Jenkins is telling me that I have too many threads stuck. 

[Victor Martinez]

Probably there are more posts about using pull rather than polling:

- http://kohsuke.org/2011/12/01/polling-must-die-triggering-jenkins-builds-from-a-git-hook/