Long story short, gonna have like 10-20 mysql db instances. There are all going to be exactly the same schema. After we release to prod, that should jump to 300-400 db instances. We use Red Gate to manage all our crap in MSSQL Server, but obviously they don't have that for mysql.
What are you guys using to push out schema changes to all your db instances at once?
What are you guys using to push out schema changes to all your db instances at once?