'Start the daemon.'

def start(self):

    if ((self.pidfile is not None) and self.pidfile.is_running()):
        self.pidfile.unlock()
        LOG.error(_LE('Pidfile    %s    already    exist.    Daemon    already    running?'), self.pidfile)
        sys.exit(1)
    self.daemonize()
    self.run()
