# Prometheus Exporter

## Overview

This page describes the Prometheus exporter, which provides real-time metrics for the Aerospike Graph Service (AGS).

## Prometheus metrics

Prometheus Exporter provides the following metrics.

-   Java Virtual Machine (JVM) information, including memory usage and CPU usage.
-   Server information, including average query time.

For a complete list of available metrics, see the \[Metrics Reference\](/database/reference/metrics

### Prometheus configuration

The Prometheus Exporter runs on port `9090` by default with a default path of `/metrics`. You can override these defaults by setting the following environment variables or configuration options in your [properties file](https://aerospike.com/docs/graph/3.0.0/install/docker#configuration-options):

```plaintext
aerospike.graph.http.port = <PORT-NUMBER>

aerospike.graph.prometheus.path = </path/to/prometheus>
```

::: note
You can also use Docker port remapping to switch the default port in the container to another port externally.
:::

### GremlinServer metrics

The metrics available through GremlinServer are listed in the [TinkerPop documentation](https://tinkerpop.apache.org/docs/current/reference/#metrics).