[Buildbot-devel] How to not run as root?

[Alexander Staubo]

I don't know Twisted at all, so forgive me if this is an obvious question.

I am setting up BuildBot, but I want both the master and slaves to run 
as a specific user: primarily for security reasons, but also because the 
build/test process need to run as a certain user acount.

However, if I try running the master with:

$ su buildbot -c 'buildbot start .'

then I get the following exception in the log (pardon the line wrapping):

Traceback (most recent call last):
   File "/usr/local/bin/twistd", line 36, in ?
     run()
   File 
"/usr/local/lib/python2.3/site-packages/twisted/scripts/twistd.py", line 
184, in run
     app.run(runApp, ServerOptions)
   File 
"/usr/local/lib/python2.3/site-packages/twisted/application/app.py", 
line 205, in run
     runApp(config)
   File 
"/usr/local/lib/python2.3/site-packages/twisted/scripts/twistd.py", line 
175, in runApp
     startApplication(config, application)
   File 
"/usr/local/lib/python2.3/site-packages/twisted/scripts/twistd.py", line 
160, in startApplication
     shedPrivileges(config['euid'], process.uid, process.gid)
   File 
"/usr/local/lib/python2.3/site-packages/twisted/scripts/twistd.py", line 
134, in shedPrivileges
     switchUID(uid, gid, euid)
   File "/usr/local/lib/python2.3/site-packages/twisted/python/util.py", 
line 605, in switchUID
     setgid(gid)
OSError: [Errno 1] Operation not permitted

Thanks.

Alexander.