Greetings. One way to keep your cheesecake from cracking is by adding your eggs last and mixing them just to incorporate. Over mixing at this stage will incorporate too much air which will cause it to crack.
open the door and slowly let the cheesecake cool down and then pull it out completely of the oven after about fifteen minutes... that isn't always a sure thing though either if mine crack, i just cut it into slices so then the crack isn't noticeable..
if you spray a tiny bit of pam on top before baking it usually helps...