# Prometheus Client Service Output Plugin
This plugin starts a [Prometheus](https://prometheus.io/) Client, it exposes all metrics on `/metrics` to be polled by a Prometheus server.
## Configuration
```
# Publish all metrics to /metrics for Prometheus to scrape
[[outputs.prometheus_client]]
# Address to listen on
listen = ":9273"
# Expiration interval for each metric. 0 == no expiration
expiration_interval = "60s"