I have followed this tutorial to setup my buildbot server on FreeBSD 12.1:
Server is working and building with poudriere, after I change how to the tutorial handle the array of workers.
I adapted the tutorial instructions for my scenario as follows on file /var/buildbot-master/master.cfg:
. . .
####### SCHEDULERS
c['schedulers'] = []
# Forceful scheduler allowed for all builders
c['schedulers'].append(schedulers.ForceScheduler(
name='force',
builderNames=[builder.name for builder in c['builders']]))
# Watch ports tree for changes on given branch
c['schedulers'].append(schedulers.SingleBranchScheduler(
name='sched-bulk-121amd64-2020Q2',
change_filter=util.ChangeFilter(project='freebsd-ports', branch='branches/2020Q2'),
builderNames=['bulk-121amd64-2020Q2']))
. . .
This line give error on startup:
builderNames=[builder.name for builder in c['builders']]))
I don't know pyhton, but sees to me it's an for to get all builder names in an array...
The error message is:
2020-09-16 15:33:18-0300 [-] twistd 20.3.0 (/usr/local/bin/python3.7 3.7.9) starting up.
2020-09-16 15:33:18-0300 [-] reactor class: twisted.internet.pollreactor.PollReactor.
2020-09-16 15:33:18-0300 [-] Starting BuildMaster -- buildbot.version: 2.7.0
2020-09-16 15:33:18-0300 [-] Loading configuration from '/var/buildbot-master/master.cfg'
2020-09-16 15:33:18-0300 [-] error while parsing config file:
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/twisted/python/threadpool.py", line 266, in <lambda>
inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
File "/usr/local/lib/python3.7/site-packages/twisted/python/context.py", line 122, in callWithContext
return self.currentContext().callWithContext(ctx, func, *args, **kw)
File "/usr/local/lib/python3.7/site-packages/twisted/python/context.py", line 85, in callWithContext
return func(*args,**kw)
File "/usr/local/lib/python3.7/site-packages/buildbot/config.py", line 170, in loadConfig
self.basedir, self.configFileName)
--- <exception caught here> ---
File "/usr/local/lib/python3.7/site-packages/buildbot/config.py", line 128, in loadConfigDict
execfile(filename, localDict)
File "/usr/local/lib/python3.7/site-packages/twisted/python/compat.py", line 247, in execfile
exec(code, globals, locals)
File "/var/buildbot-master/master.cfg", line 103, in <module>
builderNames=[builder.name for builder in c['builders']]))
builtins.KeyError: 'builders'
2020-09-16 15:33:18-0300 [-] Configuration Errors:
2020-09-16 15:33:18-0300 [-] error while parsing config file: 'builders' (traceback in logfile)
2020-09-16 15:33:18-0300 [-] Halting master.
2020-09-16 15:33:18-0300 [-] BuildMaster startup failed
2020-09-16 15:33:18-0300 [-] BuildMaster is stopped
2020-09-16 15:33:18-0300 [-] Main loop terminated.
2020-09-16 15:33:18-0300 [-] Server Shut Down.
The following part point me where make the change:
File "/var/buildbot-master/master.cfg", line 103, in <module>
builderNames=[builder.name for builder in c['builders']]))
builtins.KeyError: 'builders'
2020-09-16 15:33:18-0300 [-] Configuration Errors:
2020-09-16 15:33:18-0300 [-] error while parsing config file: 'builders' (traceback in logfile)
2020-09-16 15:33:18-0300 [-] Halting master.
So, instead check the array, I have hard coded the parameter:
builderNames=[builder.name for builder in c['builders']]))
To:
builderNames=['bulk-121amd64-2020Q2']))
Then buildbot start wihtout erros, and can run poudriere.
My question is:
What should be the correct syntax to use that for checking the array c['builders'] letting it dynamic instead hard coded?
Have tried a lot of examples from python tutorials without success.
In default master.cfg.sample, structure c['builders'] is creating after c['schedulers'], that is why it is undefined in your code.
Try to put (move) BUILDERS block before SCHEDULERS block.