> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/analytics/mariadb-exa/monitoring-and-observability.md).

# Monitoring and Observability

Explore essential tools and techniques for monitoring and optimizing data systems and workflows:

* **MaxScale CDC log:** Watch the MaxScale log (`/var/log/maxscale/maxscale.log`) with info logging enabled for the binlogrouter CDC service to track batch application and replication lag. The CDC service persists its GTID position, so it resumes from where it stopped after a restart.
* **`maxctrl`:** Inspect service and listener state, and enable debug/info logging (`maxctrl alter maxscale log_info true`) to see SmartRouter routing decisions and CDC progress.
* **Exasol GUI:** Monitor cluster health, node status, and I/O throughput.
* **SQL Auditing:** Use Exasol system tables (EXA\_STATISTICS, EXA\_ALL\_SESSIONS) for query profiling.
* **Grafana / Prometheus Integration:** Collect metrics across MaxScale, MariaDB, and Exasol.
* **MariaDB Enterprise Manager:** Review operational statistics and metrics covering all MariaDB products except MariaDB Exa.

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