After a reinstall the data drive could not be re-attached through any dashboard
route: both candidate lists came from the agent's unclaimed-disk scan, and the
rebuilt box's drives are claimed. The restore page said it was two clicks while
pointing at an empty picker.
The attach list now also carries the controller's own mounted-but-unregistered
filesystems. initialize is untouched, so the format wizard's system/backup
protection is unchanged. The 'two clicks' sentence is conditional on the picker
being non-empty, and says something true and actionable when it is not.
Both wizards now source candidates from the agent's Impl-2a raw-device scan
(GET /disks/candidates, proxied) instead of the Observe-based /api/disks — so a
brand-new non-PVE-storage drive is finally discoverable + enrollable end-to-end.
agentapi.ListCandidates + a passthrough proxy (no controller-side filtering; the
agent's unclaimed filter is authoritative). storage_init renders `initialize`,
storage_attach renders `attach`; the enroll flow + Impl-1 guarded mkfs unchanged.
Tests + go build/vet/test clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
New internal/channelhealth Checker: ~60s probe via the PRODUCTION memoized client
(Server.ProbeAgentChannel, GET /storage), classifies failures (spike Q1 map), debounces transient
reasons (N>=2; construction error latches distinctly), seeds first obs, alerts operator+dashboard on
transition. Notifier.NotifyAgentChannelDown/Recovered (English, operator-only), AlertManager dashboard
banner (Hungarian). No agent/hub change. Spike-proven.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EPZ4GJ8L5Jqf8UiPwbn1kt
agentClient() built a new agentapi.Client (new bare http.Transport, IdleConnTimeout:0)
per call and discarded it without closing idle conns -> one leaked idle ESTABLISHED
socket per call to the agent :8443, exhausting the ephemeral port range after ~5 days
(EADDRNOTAVAIL). Memoize one shared client via sync.Once; harden Transport
(MaxIdleConns/PerHost + IdleConnTimeout 90s). Agent/firewall untouched.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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