6 Open Source Tools to Monitor MySQL Performance in Linux

MySQL ships with decent built-in diagnostics, but when your database is slowing down under load, you need command-line tools that show you exactly what’s happening: which queries are running, how long they’re taking, and where the bottlenecks are.
This guide covers 6 open-source command-line tools for monitoring MySQL uptime, load, slow queries, and overall performance on Linux. The tools were tested on Ubuntu and RHEL, but they work on any modern Linux distribution running MySQL 8.0 or MariaDB 10.6+.