[Buildbot-devel] Questions on basic BuildBot configuration

[Mary Fernandez]

Hi Mark,
Thanks for your reply.  Yes, the ports match
and are both 9989. 
The second problem is definitely a firewall issue: 
our firewall simply won't permit traffic out on that 
port.  I will move the master to 80 and see what 
happens.

But I think the first problem is different: I'm 
guessing it's the interface between the Twisted
mail.smtp library and sendmail.  Or am I missing
something?

Thanks! Mary
On Thu, 2007-02-15 at 13:41, Mark Pauley wrote:
> So you can see the master on port 25... can you telnet onto the master
> on port 9989 (or whatever port the master is running with)?
> 
> 
> Double check the master.cfg file and make sure the address and port
> are correct on both sides.  Also make sure you don't have a pesky
> firewall, or you'll need to run the master on port 80 or something
> like that.
> 
> 
> _Mark 
> On Feb 14, 2007, at 7:12 PM, Mary Fernandez wrote:
> > Greetings,
> > 
> > I have two very basic questions about BuildBot
> > configuration problems that hopefully someone 
> > can answer easily.
> > 
> > Thanks for any help in advance!
> > -Mary
> > 
> > General config info:
> > buildbot 0.7.5
> > Twisted 2.0.1   
> > CVSToys 1.0.10
> > (CVSToys did not compile against Twisted 2.5, so I backed
> > up to 2.0, which was in the same era as the CVSToys release)
> > 
> > Problem #1: SMTP error when using mail.mailNotifier
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > 
> > Configuration: FreshCVS, a buildbot master, and
> > a buildbot slave are all running on the same machine.
> > 
> > What happens: On a commit, FreshCVS sends mail to 
> > me (successfully) and also triggers a PBService event, 
> > which in turn, triggers the build master, which contacts
> > the slave.  The slave runs the job, returns the result to the build
> > master, which attempts to send a mail notification. 
> > 
> > Results in following error in twistd.log:
> > 
> > [Uninitialized] SMTP Client retrying server. Retry: 1
> > [Uninitialized] Unhandled error in Deferred:
> > [Uninitialized] Traceback (most recent call last):
> >    Failure: twisted.internet.error.ConnectionRefusedError: 
> >        Connection was refused by other side: 111: Connection
> > refused.
> > 
> > I was surprised, because FreshCVS's email succeeded
> > so I expected BuildBot's to as well.
> > 
> > The difference is that FreshCVS's mail notifier 
> > invokes /usr/bin/sendmail explicitly as a shell command,
> > whereas BuildBot uses the twisted.mail.smtp object.
> > 
> > I'm guessing that sendmail on this machine is configured
> > in some way that ends up refusing connections from Twisted.
> > Has anyone ever seen this before?  Any suggestions?
> > 
> > Problem #2: Slave inside firewall cannot connect to master
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > Configuration: FreshCVS and buildbot master are on machine
> > outside firewall.  buildbot slave is on machine inside
> > firewall (behind NAT)
> > 
> > What happens: I can SSH from slave machine to master
> > machine, check out source, and build successfully on the
> > slave.   But when I try to start the slave daemon, it never
> > connects to the master:
> > 
> > [Uninitialized] <twisted.internet.tcp.Connector instance at
> > 0xb7b3e18c>
> > will retry in 2 seconds
> > 
> > Running buildbot debugclient gives a bit more info:  
> > 
> >  [Failure instance: Traceback (failure with no frames): 
> >  twisted.internet.error.ConnectError: An error occurred while   
> >  connecting: 113: No route to host.
> > 
> > I'm guessing that this is the error when the daemon starts up.
> > There's obviously a route to the host, because SSH works.
> > Could this be due to incorrect address translation from the 
> > master back to the slave?  
> > 
> > Any ideas are greatly appreciated.
> > -- 
> > Mary Fernandez <mff at research.att.com>
> > AT&T Labs - Research
> > 
> > 
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-- 
Mary Fernandez <mff at research.att.com>
AT&T Labs - Research