Wow, check out what just came out from Linbit: The DRBD Management Console. Written in Java (so it runs anywhere), completely open source (GPLv3), and allows you to manage DRBD and Heartbeat based clusters. You can install, configure, see your systems graphically, and a lot more. I’m interested to try the beta out, as soon as I get back to my lab (sitting in the airport now). If you know how to use DRBD/Heartbeat, and use it in production for your MySQL setup, it might be a good application to test out, and improve if need be.
From the screenshots, I’m surprised this isn’t a value added extra that Linbit would like to charge for. Kudos, Linbit, for keeping it GPLv3!