[users at bb.net] [SPAM] How to debug why the buildmaster won't start a build?

[Pierre Tardy]

The home page only show the running builds.
in the builder page, there is the list of buildrequests.

A reason why a master won't start them might be
- there is no worker available
- there is a nextWorker or a nextBuild callback which returns None or []

In the case those checks do not help, the code where you can start to add
debug logs is:
https://github.com/buildbot/buildbot/blob/master/master/buildbot/process/buildrequestdistributor.py#L189

Regards
Pierre

On Tue, Jun 13, 2017 at 4:49 PM alan somers <asomers at gmail.com> wrote:

> No, the home page shows no pending builds.
>
> On Tue, Jun 13, 2017 at 8:46 AM, Neil Gilmore <ngilmore at grammatech.com>
> wrote:
> > Alan,
> >
> > Does your setup have a web UI? If so, are you seeing builds being queued?
> > Big difference between a queued build not starting and builds not getting
> > queued at all...
> >
> > Neil Gilmore
> > grammatech.com
> >
> >
> > On 6/12/2017 11:12 PM, alan somers wrote:
> >>
> >> I have a buildmaster with one DockerLatentWorker and two builders.
> >> Each builder has two change sources: a GitPoller and a
> >> GitHubPullrequestPoller.  Each builder also has two schedulers: an
> >> AnyBranchScheduler for a few select branches and an AnyBranchScheduler
> >> for pull requests.  I also have Github hooks setup to push commit
> >> notifications into the buildmaster.  There is a WorkerLock with a
> >> maxCount of 1 that is shared by one step of both builders'
> >> BuilderConfigs.
> >>
> >> Everything was working fine until today, but now the buildmaster never
> >> attempts to kick off a build.  I can see from twistd.log that the
> >> GitHub hook is still working, and I see log entries like "added
> >> buildset 183 to database".  However, whereas normally that entry would
> >> be followed up by a "starting build" entry, now there is nothing.
> >> There aren't any errors; there's just nothing at all.
> >>
> >> How can I debug this problem?  I have Manhole working, but I don't
> >> know what to look for.  Any advice would be appreciated.
> >>
> >> Buildless in Boulder,
> >> -Alan
> >> _______________________________________________
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> >> users at buildbot.net
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> >
> >
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