Processing HostsController#setBuild (for 10.11.228.39 at 2011-03-08 14:29:29) [GET]
Parameters: {"action"=>"setBuild", "id"=>"testhost1.jweiss.redhat.com", "controller"=>"hosts"}
TFTP Failed: Permission denied - /usr/share/foreman/tftp
Redirected to http://jweiss.usersys.redhat.com:5000/hosts/testhost1.jweiss.redhat.com
Completed in 13ms (DB: 4) | 302 Found [http://jweiss.usersys.redhat.com/hosts/testhost1.jweiss.redhat.com/setBuild]

"/usr/share/foreman/tftp" - It appears to be constructing this dir from foreman user's HOME dir (/usr/share/foreman), and the ":tftppath: tftp/" setting in
/etc/foreman/settings.yaml.

The problem is this dir is not writable by foreman, but really it should not even be attempting to write there. It should be using the smart proxy which has its own tftp dir setting and actually has permission to write to it. I talked with jsherrill about this and he was not able to reproduce it on his system. Neither of us could find any setting I had missed that would fix it.