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

[alan somers]

Nope, no buildrequests either.
https://alan.ci/buildbot/#/builders/5

The only worker is a DockerLatentWorker.  I've verified that the
buildmaster can talk to the Docker server, and I can't find any
docker-related error messages in twistd.log.  So I think the problem
is that the master isn't generating any BuildRequests.  What might be
causing that?

-Alan

On Tue, Jun 13, 2017 at 8:57 AM, Pierre Tardy <tardyp at gmail.com> wrote:
> 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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>> >
>> >
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