Clément Désiles
be73f3adfa
Provision Grafana Unified Alerting as code: ntfy webhook contact point (?template=grafana), notification policy tree, and cumulative disk tiers for HDD temperature (48-60C, <20C) plus ZFS/filesystem capacity. Lower the smartctl exporter interval to 30m for alert responsiveness.
50 lines
1.2 KiB
Markdown
50 lines
1.2 KiB
Markdown
# Disks
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Partitions disks, enables periodic SSD TRIM, and optionally exposes S.M.A.R.T.
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disk health to Prometheus.
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## Configuration
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See [defaults/main.yml](defaults/main.yml).
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### S.M.A.R.T. exporter
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Gated by `smartctl_exporter_enabled`. When true, downloads and runs the
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`smartctl_exporter` static binary as a root systemd service, polling `smartctl`
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at `smartctl_exporter_interval` (default `30m`).
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```yaml
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smartctl_exporter_enabled: true
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```
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Pair with Prometheus:
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```yaml
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prometheus_scrape_configs:
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- job_name: "smartctl"
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static_configs:
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- targets: ["127.0.0.1:9633"]
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labels:
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instance: andromeda
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```
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### Temperature alerts
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The `grafana` role provisions cumulative temperature thresholds: a rise fires
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each newly crossed threshold (lower tiers keep firing), a fall resolves each
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crossed-down threshold (ack), and the final ack fires when leaving the lowest
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tier.
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| Threshold | `severity` | `for` |
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|-----------|-----------|-------|
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| ≥48°C | warning | 10m |
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| ≥50°C | warning | 10m |
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| ≥52°C | warning | 10m |
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| ≥54°C | high | 10m |
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| ≥56°C | high | 10m |
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| ≥58°C | critical | 10m |
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| ≥60°C | critical | 5m |
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| <20°C | warning | 10m |
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Responsiveness is bounded by `smartctl_exporter_interval` (default `30m`).
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