[distcc] distcc and ubuntu

[Martin Pool]

On 30 Aug 2006, Guy Isely <gisely at gmail.com> wrote:
> Hi,
> 
> I'm trying to use distcc to do distributed compilation across two machines both
> running Ubuntu. To set this up I did the following on both machines:
> 1. Installed distcc from the repository
> 2. Opened /etc/default/distcc, changed STARTDISTCC="false" to STARTDISTCC=
> "true", and changed ALLOWEDNETS="127.0.0.1" to ALLOWEDNETS="127.0.0.1" "
> 192.168.1.58" (or "192.168.1.57" on the other machine).

You need all values inside the one quoted string, e.g.:

  ALLOWEDNETS="127.0.0.1 192.168.1.58"

also you must set LISTENER to the public interface of the machine, or
unset it to listen on all addresses, e.g.

  LISTENER=""

> 3. Opened /etc/environment and added a line that says:
> DISTCC_HOSTS="localhost 192.168.1.58" (or "localhost 192.168.1.57" on the
> 192.168.1.58 machine).
> 4. Rebooted
> 
> I checked on the 192.168.1.58 machine and found the distccd daemon is running
> as follows:
> /usr/bin/distccd --pid-file=/var/run/distccd.pid --log-file=/var/log/
> distccd.log --daemon --allow 127.0.0.1 --allow 192.168.1.57 --listen 127.0.0.1
> In fact, 4 copies of the same process are running simultaneously... I'm not
> sure why.

That's normal, it's just because that machine can run up to four jobs
simultaneously.

> distcc[5751] (dcc_writex) ERROR: failed to write: Connection refused

This is the tip off: the connection is refused because the server is
listening only for connections from localhost.

I think this comes from Debian and it's reasonable there because they
will prompt you for those values when the package is installed.  Ubuntu
doesn't do that and so it's a bit mysterious.  Perhaps you could file a
bug on launchpad.net explaining how you got into trouble.

Thanks
-- 
Martin