# Prometheus Client Service Output Plugin This plugin starts a [Prometheus](https://prometheus.io/) Client, it exposes all metrics on `/metrics` (default) 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" # Use TLS tls_cert = "/etc/ssl/telegraf.crt" tls_key = "/etc/ssl/telegraf.key" # Use http basic authentication basic_username = "Foo" basic_password = "Bar" # IP Ranges which are allowed to access metrics ip_range = ["192.168.0.0/24", "192.168.1.0/30"] # Path to publish the metrics on, defaults to /metrics path = "/metrics" # Expiration interval for each metric. 0 == no expiration expiration_interval = "60s" # Send string metrics as Prometheus labels. # Unless set to false all string metrics will be sent as labels. string_as_label = true ```