Comment 1 for bug 1443709

Further logging:

Apr 14 08:05:12 trusty-maas9 maas.power: [ERROR] Error changing power state (off) of node: vague-joke.local (node-3860140e-dc69-11e4-839c-00163e
11c887)
Apr 14 08:05:12 trusty-maas9 maas.power: [ERROR] Error changing power state (off) of node: tragic-color.local (node-3f7a3ecc-dc69-11e4-8842-0016
3e11c887)
Apr 14 08:05:13 trusty-maas9 maas.power: [ERROR] Error changing power state (off) of node: valuable-pies.local (node-292180b8-dc69-11e4-850f-001
63e11c887)
Apr 14 08:05:13 trusty-maas9 maas.power: [ERROR] Error changing power state (off) of node: vibrant-balance.local (node-34600472-dc69-11e4-b8d9-0
0163e11c887)
Apr 14 08:05:13 trusty-maas9 maas.power: [ERROR] Error changing power state (off) of node: yearly-rest.local (node-432ae2ec-dc69-11e4-8842-00163
e11c887)

==> /var/log/maas/regiond.log <==
          File "/usr/lib/python2.7/dist-packages/maasserver/websockets/handlers/node.py", line 518, in check_power
            update_power_state(state).wait(15)
          File "/usr/lib/python2.7/dist-packages/crochet/_eventloop.py", line 217, in wait
            result = self._result(timeout)
          File "/usr/lib/python2.7/dist-packages/crochet/_eventloop.py", line 195, in _result
            raise TimeoutError()
        crochet._eventloop.TimeoutError: