MySQL 8.0 (partial support, password checks don't work) Percona Server 8.0 (partial support, password checks don't work) MariaDB 5.5 (no support, deprecated version) MariaDB 10.2 (no support, ...
Cloud based is not supported at this time (Help wanted !!!!!) It's also important to wait at least a day of uptime to get accurate results. In fact, running mysqltuner on a fresh restarted server is ...