def install_poly_startup_task(self):
        from crontab import CronTab
        cron = CronTab(user='root')
        if not cron.find_comment('poly_start'):
            print "Installing poly_start crontab..."
            job = cron.new(command='rtrdb -r data_service=8001 db &', comment='poly_start')
            job.every_reboot()
            if job.is_valid():
                print "poly_start crontab successfully installed."
            else:
                print "poly_start crontab failed to install"
        else:
            print "poly_start crontab already installed"