With the pymysql driver, zbxdb can monitor mysql instances. Not as feature rich as the Oracle monitoring but that is easily extended.

Are you missing a metric? Just add the SQL to get the data to etc/zbxdb_checks/mysql/* depending on the version of mysql and the role (primary/slave)

Is your mysql version missing? Start with copying the checks that best matches your missing version.

See  https://github.com/ikzelf/zbxdb for more details.