hermes-skills/skills/devops/ops-portal-and-collector/references/vps-threshold-alerting.md

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.