'halt arbiter'

def halt(self, reason=None, exit_status=0):

    self.stop()
    self.log.info('Shutting    down:    %s', self.master_name)
    if (reason is not None):
        self.log.info('Reason:    %s', reason)
    if (self.pidfile is not None):
        self.pidfile.unlink()
    self.cfg.on_exit(self)
    sys.exit(exit_status)
