The Hydrolix stack includes Prometheus, an open-source metrics database. While the Stack runs, Hydrolix continuously updates its Prometheus instance with metrics information. You can query, view, and actively monitor this information through the use of a stack's Grafana Integration or you can access it via your own monitoring platform.

Using Prometheus directly

Prometheus has its own web-based UI, available by visiting https://<HOST>/prometheus in your web browser.

This view is suitable for quickly entering queries and seeing simple, graphed results. Hydrolix does make this feature available immediately, without any additional setup.

Hydrolix's metrics

This table lists the metrics available, and which components update them. If more than one component uses a given metric, then querying it will return results from all relevant components. You can restrict results to a specific component by adding a service keyword to your query, e.g. "process_open_fds{service="stream-peer"}".

For more information about metric types, refer to Prometheus's documentation.

General metrics

These metrics track various counters and statistics regarding data ingestion.

Query metrics

These metrics track activity specific to querying.