A little-known fact about Prometheus is that it can actually monitor itself! By default, Prometheus exposes its own metrics on a special endpoint (/metrics). These metrics include internal details such as the number of scrapes, the memory usage, and query performance statistics. You can configure Prometheus to scrape its own metrics just like any other service, giving you valuable insights into how well your monitoring system is performing.
This self-monitoring capability is helpful for diagnosing issues within Prometheus itself, like identifying slow queries, optimizing resource usage, or debugging scrape failures.
Oliver