# Monitoring RDS for MariaDB DB engine upgrades with events
<a name="USER_UpgradeDBInstance.MariaDB.Monitoring"></a>

When you upgrade the engine version of an RDS for MariaDB database, Amazon RDS emits a specific event during each phase of the process. To track the progress of an upgrade, you can view or subscribe to these events.

 For more information about RDS events, see [Monitoring Amazon RDS events](working-with-events.md).

For detailed information about a specific Amazon RDS event that occurs during your engine upgrade, see [Amazon RDS event categories and event messages](USER_Events.Messages.md).