'Get text console log output from Server.
:param server: The :class:`Server` (or its ID) whose console output
you would like to retrieve.
:param length: The number of tail loglines you would like to retrieve.
:returns: An instance of novaclient.base.StrWithMeta or
novaclient.base.UnicodeWithMeta'

def get_console_output(self, server, length=None):

    (resp, body) = self._action_return_resp_and_body('os-getConsoleOutput', server, {'length': length})
    return self.convert_into_with_meta(body['output'], resp)
