Monitoring MySQL, Percona Server, and MariaDB databases is essential for maintaining application performance and identifying potential issues, and the Elastic Stack offers tools such as Metricbeat and Filebeat to facilitate this. Filebeat for MySQL includes filesets for analyzing database error and slow query logs, providing insights into server problems and resource-heavy queries, while Metricbeat collects key metrics from the SHOW GLOBAL STATUS query to monitor server health. These tools support MySQL, Percona Server, and MariaDB, offering compatibility with various database versions, including MySQL 8.0 and MariaDB 10.2 and 10.3, and have expanded to include experimental support for Galera clustering metrics. The Elastic Stack provides additional capabilities like Elastic APM for application performance monitoring and Packetbeat for network connection analysis, enabling comprehensive monitoring solutions for database administrators.