Monitoring
Prometheus and Grafana form the central monitoring stack for the whole homelab, running as Docker containers on the NAS.
What's monitored
- Proxmox host metrics — a PVE exporter reports node-level and per-VM/LXC CPU, memory, and disk metrics into a dedicated Grafana dashboard.
- Host metrics everywhere — a node exporter runs on the NAS, the Docker host, and every Raspberry Pi, feeding basic CPU/RAM/disk/network stats.
- Container metrics — cAdvisor runs on both the Docker host and the NAS, breaking down resource usage per container.
- Network hardware via SNMP — an SNMP exporter polls a network-attached printer for toner level, page count, and status, proving the same pattern works for any SNMP-capable device.
Dashboards
| Dashboard | Focus |
|---|---|
| Proxmox monitoring (extended) | Node-level and per-guest VM/LXC metrics |
| Docker container monitoring | Per-container CPU/memory/network/disk |
| Network printer | Toner level, page count, online/offline status via SNMP |
Open items
- Alerting rules are not yet configured for most services.
- The secondary (test) Proxmox host isn't monitored yet — it's usually powered off.
- Retention policy for Prometheus data hasn't been tuned.
- Monitoring data itself isn't currently backed up.