# VPS Threshold Alert System — Jul 2026

Automated monitoring system that checks RAM, disk, and CPU usage across all 10 servers every 15 minutes.

## Script
`/root/.hermes/scripts/vps-threshold-check.sh` (chmod 755)

## Cron job
`vps-threshold-check` — runs every 15 min, no_agent mode (stdout delivered as Telegram message)

## Servers monitored (10 total)
- 9 Hetzner servers (SSH via itpp-infra key, 5s timeout per host)
- 1 local (core, netcup RS 2000)

## Thresholds
| Metric | Warning (80%) | Critical (90%) | Emergency (95%) |
|--------|-------------|---------------|-----------------|
| Disk | 80% | 90% | 95% |
| RAM | 80% | 90% | 95% |
| CPU load | 80% cores utilized | 90% | 95% |

## Alert tracking
`/root/.hermes/data/threshold-alerts.json` — keys format: `{hostname}_{metric}_{threshold}`
- 24-hour cooldown per key
- Auto-resets when metric drops below threshold
- Re-alerts if metric crosses again after cooldown

## Alert format (Telegram)
```
🚨 VPS Alert: ai.itpropartner.com
  ⚠️ DISK at 92% (threshold: 90%)
  ⚠️ RAM at 83% (threshold: 80%)
```

Multiple thresholds on one server are combined into a single message.
