Weird,
> use nodebb switched to db nodebb > db.objects.update({ _key: "config" }, { $set: { "maintenanceMode": 1 } }); WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })NodeBB restart.
It's working, checked APC and the switch is turned on.
I think i was loged in as administrator before, but i was checking maintenance page in APC and switch was turned off.