Host network sparklines were displaying wildly incorrect values (e.g., 147 GB/s
for an idle Raspberry Pi) because cumulative byte counters (total bytes since
boot) were being stored directly instead of being converted to rates.
Changes:
- monitor.go: Use RateTracker to calculate network rates for hosts, matching
the existing pattern used for VMs and containers. Only record network
metrics when we have enough samples to calculate valid rates.
- router.go: Remove network metrics from live fallback for hosts since we
can't calculate rates from a single snapshot. Better to show nothing than
misleading cumulative totals.
The fix follows the established codebase pattern where:
1. Agent reports cumulative RXBytes/TXBytes
2. RateTracker compares consecutive samples to calculate bytes/second
3. Rates are stored in metrics history for sparkline display
Enrich the patrol seed context with service identity (from discovery
store) and network reachability (via ICMP ping through host agents).
The guest metrics table now includes Service and Reachable columns,
and a Service Health Issues section highlights running-but-unreachable
guests. A new SignalGuestUnreachable signal type creates deterministic
findings for unreachable guests.
New files:
- patrol_intelligence.go: GuestProber interface, GuestIntelligence
type, gatherGuestIntelligence() with concurrent per-node probing
- patrol_prober.go: agentExecProber implementation using batch ping
commands via connected host agents
Expand the smartctl collector to capture detailed SMART attributes (SATA
and NVMe), propagate them through the full data pipeline, persist them
as time-series metrics, and display them in an interactive disk detail
drawer with historical sparkline charts.
Backend: add SMARTAttributes struct, writeSMARTMetrics for persistent
storage, "disk" resource type in metrics API with live fallback.
Frontend: enhanced DiskList with Power-On column and SMART warnings,
new DiskDetail drawer matching NodeDrawer styling patterns, generic
HistoryChart metric support with proper tooltip formatting.
