After running the idea by some of my fellow technical folks, I’ve considered making an array of screencasts aimed to prepare people for the MySQL DBA exam.
If you’ve run MySQL in a replication environment, or if you’ve enabled binary logging for transactional integrity, you know that the binary logs can grow rather quickly.
While running into MySQL’s open files limit will manifest itself into various error messages, this is the standard one that you’ll receive during a mysqldump:
MySQL documentation can be awfully flaky - extremely verbose on issues that don’t require such verbosity, and then extremely terse on issues that need a lot of explanation.