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TrueNAS Scale Pool Metrics

TrueNAS Core, the BSD based version of TrueNAS, includes metrics outputs that come with pool usage statistics, something you may expect from a storage operating system. TrueNAS Scale, the Linux base version includes many performance metrics that you can export, but surprisingly not pool usage.

For my home metrics, I use Prometheus, InfluxDB, and Grafana. To solve the lack of pool usage metrics, I started considering the project which I use to take UPS metrics and report them to InfluxDB.

This led me to the following steps to collect TrueNAS pool metrics, through InfluxDB and Grafana. I hope it helps you too!