I would like to make sure that I'm getting monitoring alerts all droplets, even if I fail to add a certain label to a droplet.

However in our case there are also some (worker) droplets on which some monitoring alerts should not be triggered because having high metrics values (high cpu) is actually expected behavior. 

To achieve this, it would be great if I could set an alert for all droplets combined with a negative match on specific labels. 

+"All droplets" -"worker_label"