I deployed a new feature to Engine Yard that had migrations. Of course I passed the migration flag and it worked successfully. But then I decided to take the feature out.
Note: These migrations removed some columns
I then rolled back on github and deployed again, but now I'm getting a postgres error that a column doesn't exist (this is a column removed in the migration from before)
How do you rollback migrations on Engine Yard?
I've discovered that when you ssh into your engineyard app you can go to the current deploy's directory and run bundle exec rake ...
thus you can run probably run bundle exec rake db:rollback