Update all dashboard datasource references from "prometheus" to
"victoriametrics" to match the declared datasource UID. Enable
prune and deleteDatasources to clean up the old Prometheus
(monitoring01) datasource from Grafana's database.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Dashboard for monitoring NixOS deployments across the homelab:
- Hosts behind remote / needing reboot stat panels
- Fleet status table with revision, behind status, reboot needed, age
- Generation age bar chart (shows stale configs)
- Generations per host bar chart
- Deployment activity time series (see when hosts were updated)
- Flake input ages table
- Pie charts for hosts by revision and tier
- Tier filter variable
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
