It looks like nova is keeping mysql connections open until they time out. How are others responding to this issue? Do you just ignore the mysql errors, or is it possible to change configuration so that nova closes and reopens connections before they time out? Or is there a way to stop mysql from logging these aborted connections without hiding real issues?

Aborted connection 10726 to db: 'nova' user: 'nova' host: 'asdf' (Got timeout reading communication packets)