Updating mysql server
The other thing I had to do was make the JSS Database Utility aware of the My SQL 5.7 binaries location - it prompted the first time it was launched after migrating. Not only the issue with not able to do backups, but the My Sql service was restarting automatically.
If you are getting errors with the dump, look at the logs and see what size it says its failing for and increase to that value and not an arbitrary value.
First make a backup of the data in your existing database: How to migrate your existing My SQL database off of your application server to scale your environment.