Guide changes:
- Architecture diagram now shows auto-discovered targets and optional
oc-server monitoring
- Fix /host/rootfs → /host/root mount path in node_exporter section
- Document ARGS variable name (not NODE_EXPORTER_OPTS) for Alpine init
- Add --oc-server and --nodes flag documentation to Management section
- Update resource budget with oc-server row
- Expand "No node metrics" troubleshooting with ARGS diagnostic steps
- Update screenshot captions with correct RAM values (19.5 GiB)
Screenshots refreshed after fixing node-exporter RAM bug — all 9
dashboards now show correct host metrics (20 GiB RAM, not 128 MiB).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Promtail was not shipping logs due to missing /var/lib/promtail directory
and insufficient permissions (not in adm or systemd-journal groups).
Logs Explorer dashboard queries failed on Loki 3.x because allValue ".*"
is rejected as an empty matcher — changed to ".+" which requires at least
one character. Removed unit filter from main Logs query since varlog
streams lack the unit label.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace incorrect Prometheus queries across 4 dashboard JSON files:
- incus_uptime_seconds → incus_cpu_effective_total for template vars and counts
- incus_memory_RSS_bytes → incus_memory_Active_bytes (RSS only reports for VMs)
- Uptime panel → Processes panel using incus_procs_total
- Remove wrong instance filter from network deep dive instance panels
- Fix Loki data directory permissions in deploy-observability
Add viewport screenshots of all 9 Grafana dashboards and embed them in
the observability guide with captions and updated descriptions.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Maarten