mounting light to metal ceiling stud?

I am trying to replace the old flourescent lights in the kitchen with pendant lights. After removing one of the flourescent lights, I realized that there is a metal stud (maybe 1/8" thick) where I need to drill a hole to mount the light. I'm assuming the stud is aluminum, but I haven't been able to make a dent in it with a titanium drill bit for metal or self-drilling sheet metal screws, using my 18V electric drill. Any advice on how to drill through the metal, or how to mount the light by strapping something around the stud? Glad to provide additional info.