getting out of maintenance mode on nginx

Hi guys,

I’ve been stuck in “Briefly unavailable for scheduled maintenance. Check back in a minute.” hell quite often and usually its simply a matter of deleting the .maintenance file but now I’m facing a new problem: I’m on nginx as opposed to apache and there isn’t such a thing as a .maintenance file apparently…

Had this problem twice now, it hangs there for about 10-15 minutes then all works again and WP reports that during an update I got stuck and asks if I would like to try again.

So basically, I don’t have a problem per se I’m just asking if anyone knows how to immediately resolve such a problem on nginx in case I get stuck in maintenance on a clients site where I can’t reply with “Give it a few minutes, it’ll work just fine”…