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2 changes: 2 additions & 0 deletions docs/HowTo/Deploy/Monitoring-Performance.md
Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,8 @@ To specify the host and port on which Prometheus accesses Besu, use the [`--metr
[`--metrics-port`](../../Reference/CLI/CLI-Syntax.md#metrics-port) options.
The default host and port are 127.0.0.1 and 9545.

Prometheus requires 3MB of space per node per hour for metrics, with a `scrape_interval` of 15s.

To use Prometheus with Besu, install the [prometheus main component](https://prometheus.io/download/). On MacOS, install with [Homebrew](https://formulae.brew.sh/formula/prometheus):

```
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