feat(monitoring): add VM Overview Grafana dashboard
12-panel dashboard auto-provisioned via /var/lib/grafana/dashboards:
- 4 stat tiles (disk %, RAM avail, swap used, CPU steal) with
threshold colouring matching vm-health-check.sh
- 4 time-series (disk %, RAM trend, steal, sda write GB/hr) — 7d default
- 2 bargauge top-10 by RAM and CPU (cAdvisor container_memory_working_set,
container_cpu_usage)
- Load average (1/5/15) + network throughput (RX/TX, host interfaces)
uid: vm-overview. Picked up on next Grafana boot.
Closes Phase 5: "Add Grafana" item from VM observability roadmap.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Saravana Kumar
fe8338c2c5