Demo of a single master.cfg file:

This uses the standard buildbot Pyflakes example.

Start with the buildbot-slave and buildbot-master charm in your charm
repository.

juju bootstrap
juju deploy --repository=./charms local:buildbot-master --config=./charms/oneiric/buildbot-master/examples/pyflakes.yaml
juju deploy --repository=./charms local:buildbot-slave
juju set buildbot-slave builders=runtests
juju add-relation buildbot-slave buildbot-master

Tou can also run a master and slave that run Launchpad's tests, like so:

juju bootstrap
juju deploy --config=./charms/oneiric/buildbot-master/examples/lpbuildbot.yaml --repository=./charms local:buildbot-master
juju deploy --config=./charms/oneiric/buildbot-slave/config.setuplxc.yaml --repository=./charms local:buildbot-slave
juju add-relation buildbot-slave buildbot-master

XXX Running setuplxc takes a long time.  For now, then, replace the
juju deploy of the slave with these two lines.  This will mean that,
when it works, the slave will connect to the master but when it tries
to run tests it will fail (because the slave environment has not been
set up).

juju deploy --repository=./charms local:buildbot-slave
juju set buildbot-slave builders=lucid_lp,lucid_db_lp