http://www.askubuntu.com/questions/176529/problem-in-juju-bootstrap/176530#176530
http://www.askubuntu.com/questions/176527/error-in-juju-status/176528#176528
http://www.askubuntu.com/questions/176524/problem-starting-up-nodes-juju-bootstrap-etc/176525#176525
http://www.askubuntu.com/questions/176519/juju-bootstrap-error/176520#176520
http://www.askubuntu.com/questions/176515/unable-to-commission-nodes/176516#176516
http://www.askubuntu.com/questions/176507/more-nodes-stuck-on-commissioning/176508#176508