I think i'll go setup the slaves - then they will only need be prepared to start up on boot: http://buildbot.net/buildbot/docs/latest/Launching-the-daemons.html
where SLAVE_BASEDIRs are /var/lib/buildbot/slavename (or whereever buildbot
lives on the particular OS; slavenames are already in
/var/lib/buildbot/pd-master/master.cfg, line 65, on 128.238.56.50)

Bang, i need to do sudo to set up the slaves...

What i need to do exactly is: sudo -u buildbot mkdir /var/lib/buildbot/slavename sudo -u buildbot buildbot create-slave /var/lib/buildbot/slavename 128.238.56.50:8084 slavename password sudo -u buildbot buildbot start /var/lib/buildbot/slavename

I shall also fill in the following files: /var/lib/buildbot/slavename/info/admin /var/lib/buildbot/slavename/info/host

Can i get the pass for the pddev users, or we do it another way around?

I was also thinking: we could move the master to the box that is already upgraded... the job of the master is not cpu-intensive at all, at it may be not net-intensive as well (if the uploads don't go to the master but somewhere else. Disk space is used for the logs only. What do you think?