# Monitoring

## What

Prometheus and Grafana for metrics collection and visualisation across the fleet.

## Where

Runs on **london-a** (FreeBSD 14.3). london-a is a dedicated monitoring host — very lightly loaded, disk at 6%.

| Service | URL | Port |
|---|---|---|
| Grafana | grafana.pez.sh | 3000 |
| Prometheus | prometheus.pez.sh | 9090 |

Both are behind Authelia.

## Scrape Targets

Prometheus scrapes metrics from exporters running across the fleet. All connections are made over Tailscale.

Exporters in use:
- **smartctl exporter** — disk health metrics (london-b)
- **prom-plex-exporter** — Plex metrics (london-b)
- Node exporter on various hosts

## Dashboards

Grafana dashboards cover:
- Server health (CPU, memory, disk, network)
- ZFS pool status
- Disk SMART data
- Plex activity

## Status Page

status.pez.sh is a separate lightweight status page that pulls availability data from Prometheus. 90-day uptime history. Source: [RWejlgaard/pez-status](https://github.com/RWejlgaard/pez-status).