Monitoring TrueNAS SCALE with Grafana
Grafana overview dashboard for TrueNAS SCALE: CPU/load, memory + ARC, ZFS pool usage, SMART status, and network/disk activity at a glance.
Node-Exporter
FreeBSD Jail Memory Metrics
Date: 2026-02-11 per-jail RAM, VMEM, and swap metrics in Prometheus/Grafana.
Host: FreeBSD jail host
Component: RACCT/RCTL + node_exporter textfile collector
Outcome: Per-jail RAM/VMEM/SWAP metrics in Prometheus/Grafana
Monitoring ZFS with Grafana
Date: 2026-02-08
Host: grafana
Component: Prometheus + Grafana + exporters +zfs
Scope: ZFS monitoring
ZFS / Zpool Metrics for Prometheus (node-exporter + textfile collector on FreeBSD)
This guide sets up zpool capacity metrics (zpool list) for Prometheus/Grafana using
node-exporter’s textfile collector on FreeBSD.
This complements (not replaces) zfs_exporter, which provides ARC/internal ZFS metrics but not pool capacity.
What I Got Working
Metrics exposed to Prometheus:
zpool_size_bytes{pool="zroot"}zpool_alloc_bytes{pool="zroot"}zpool_free_bytes{pool="zroot"}zpool_capacity_ratio{pool="zroot"}
These map directly to:
…Monitoring DNS with Grafana
Date: 2026-02-08
Host: grafana
Component: Prometheus + Grafana + exporters
Scope: DNS monitoring
Monitoring DNS with Grafana