[Buildbot-devel] Changing the master config dynamically

[Dan Kegel]

I use a DSL (well, really json for buildbot config, and a shell script
for the real build steps), and reconfig usually does the right thing.
 What breaks for you?

The only exception is that the builders of a new factory don't
actually do builds (or have an active force build button) when created
by a reconfig; I have to restart to get that to work.  I think.

On Wed, Oct 8, 2014 at 10:20 AM, Karoly Kamaras
<karoly.kamaras at prezi.com> wrote:
> Hi,
>
> I remember seeing this problem somewhere, but i thought it would worth to
> reopen it in a new thread:
>
> I would like to be able to edit the master configuration dynamically without
> hurting the currently running builds. I know i can reconfigure the master
> without restart, but i also saw that if the configuration is built up by
> smaller components, like builders, buildsteps, schedulers, etc. in different
> python files, then changing one file might not affect the reconfig in the
> expected way.
>
> Here is my example:
> I have a few teams, every team has their own 1 master and N slave nodes.
> They have their own github projects where they can define the build/test
> steps of each project in a custom DSL that we generate into Buildbot's
> configuration. In this case if they decide to change one of their projects
> configuration - let's say the add an extra step to a builder - they can
> commit the changes into the git repo (even to a different branch), than we
> regenerate the config, reconfigure the master and Buildbot will run with the
> new config.
>
> Is it possible to make this scenario work in a nice way? By nice i mean not
> to kill the currently running jobs, let them finish and publish the results
> to the same place from the "old" (currently running) and "new" (just
> commited and regenerated) configuration.
>
> Our first thought would be running multiple masters on the same server with
> the same DB but different configuration, and make the connection forwarded
> to the lastly configured master without killing the running "old" one (until
> it finishes the currently running jobs). It's just a first thought, i
> haven't tried it yet. I am wondering what kind of solutions exist to this
> problem?
>
> Thank you for your help in advance,
>
> Regards,
>
> Karoly Kamaras
> Developer at Prezi
>
>
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