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  fix(hosts): remote machines showed the viewing node's process uptime — keep a known boot_time, never let a writer zero it

  LastSkywalker released this 2026-09-09 11:38:37 +03:00 | 63 commits to main since this release

  After 2a17dfc every remote card (on the hub and inside a cluster) showed the same
  uptime — 12h30m, 11h53m — while only the node's own row was right.

  Root cause: Replicator.BackfillLocalHosts rebuilt HostInfo from table rows without
  BootTime. It runs on Raft activation and every 10 minutes from the bridge sender's
  push-mode reconcile, so each run replicated CmdHostUpsert/CmdConnectorHostUpsert with
  boot_time=0 and overwrote every remote row on peers and on the hub. /health then fell
  back to THIS server's process uptime, printing one number on every remote card. The
  bug is old, but until 2a17dfc cached gopsutil's boot time the agent's fingerprint
  wobbled every tick (now − uptime from whole-second clocks) and re-sent the real value
  within seconds; with a stable value the heartbeat became truly 10-min and the zeroed
  state persisted about half the time.

  • BackfillLocalHosts carries the row's BootTime.
  • hosts.StableBootTime in every upsert branch (local / agent ×2 / connector): 0 means
    "unknown" and keeps the stored value; a difference within ±2 s is truncation noise
    and keeps the stored value; anything else is a real reboot and lands.
  • The Proxmox and PBS pollers apply it before fingerprinting, so the ±1 s wobble of
    now − uptime no longer costs a Raft round per poll.
  • /health?host_id= returns an empty uptime when the boot time is unknown (the card
    hides the clock) — never the process uptime; host-less /health keeps it.

  Verified: full go test ./... green (new regression tests for the backfill payload,
  the four repository branches, the poller path and the health fallback); native binary
  on a fresh SQLite reports host 1's uptime from the OS boot time (matches
  sysctl kern.boottime exactly) and 1s process uptime for host-less /health.

  Co-Authored-By: Claude Fable 5.1 noreply@anthropic.com

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  • Source Code (TAR.GZ)