pfSense » pfSense Packages

it is no more than listening on port 9126 on lan interface, but while disabling any other outputs client.

this would be really nice cause it obsoletes running a InfluxDB server just to get the metrics viewable in Grafana.

its this plugin: Prometheus Output Plugin

apparently builds along with current telegraf

wait, its already there and works!

no need to do anything, except perhaps adding some hint to the Web UI at Services -> Telegraf

all that needs to be done is:

1. go to Services -> Telegraf
2. check Enable Telegraf
3. paste into Additional configuration for Telegraf field at the very bottom:
   

   [[outputs.prometheus_client]]
     listen = ":9100" 
   

4. ensure the service started at Status -> Services
5. verify metrics at http://PFSENSE.HOST:9100/metrics

tested with the telegraf 1.13.4_1 package that get installed currently