Hi,
I have set up Prometheus and Grafana to visualize system metrics and wanted to enrich my monitoring with TrueNAS data. I did some research and found a post on the old forum proposing a simple mapping configuration for the graphite_exporter.
I created my own mapping file with more Prometheus labels, for easier visualizations in Grafana. You can find my truenas-mapping on Github. I hope this can be useful for others as well.