From AUDIT-blast-radius-hostroot-localapi-2026-07-02.md. Each fix ships with a
non-hollow test + a companion red-proof (shown failing on the pre-fix impl).
Sudoers install-source grants became globs — deploy the sudoers drop-in with
the binary. A1 (stale-lock pool-membership) deliberately excluded (spike).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PSK5g6qYLknKj8u3QAFEr6
GET /disks/candidates enumerates host disks the Impl-1 unclaimed filter proves
free (init/attach split). RegistryKnownTargets sources the watchdog's known-drive
set from the intent registry + Felhom .mount units (not Observe/PVE storages) —
decouples drive health from PVE storage (closes the registry-only false-detach
class); Observe kept for real PVE storages + a deduped /disks union. Idempotent
existing-drive migration at start. Tests + red-proof (Observe misses a
registry-only drive; registry provider tracks it). go build/vet/test clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Impl-1. Format now runs a mandatory unclaimed-disk guard (internal/storage/claim.go:
SystemDisks + lsblk member-FSTYPE + foreign-mount + RO + pvs/zpool; fail-safe →
CLAIMED) before any mkfs — refuses the OS disk / LVM PV / ZFS-mdraid member /
foreign-mounted device even when non-data-bearing (guard sits in Format, not the
handler). Below the agent, mkfs goes ONLY through configs/felhom-mkfs-guarded.sh
(sudoers no longer allowlists raw mkfs.*), which re-checks the catastrophic cases
as root. Read-only pvs/zpool added to FELHOM_DISK. Tests + red-proof; capability
manifest updated. go build/vet/test clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
RestoreLXCOptions.Pool → pct restore --pool (omit-when-empty). New
reconcile.DefaultPool="felhom"; BringUpSpec.Pool threaded to the bring-up
restore; BOTH restore sites pool the guest (provision/DR via spec.Pool set to
DefaultPool by the CLI; restore-test scratch via DefaultPool = SPIKE residual
#2). No agent ACL change (ships in host-install v1.6.0); the pool param is inert
until the token has Pool.Allocate + the pool exists, so publishing is safe ahead
of the coordinated swap. Tests + red-proofs; go build/vet/test clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
New -cores N / -memory M (MiB) flags for --selftest=bring-up|provision (0 = keep
golden default), flowed through bringUpSizing into reconcile.BringUpSpec so the
existing buildBringUpConfig emits cores/memory into the pre-start config PUT (the
cap lands before first boot). No engine change. New pure-function test
TestBuildBringUpConfig_ResourceCaps asserts the set + omit-when-zero cases
(red-proof run + reverted). go build/vet/test clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
- configs/felhom-agent.service: canonical non-root unit (User=felhom-agent, sudo model);
deliberately NO NoNewPrivileges (breaks sudo) and NO mount-namespacing hardening (breaks
the intermediary-mount drive propagation into guests) — documented inline.
- scripts/publish-agent.sh: build (optional) + PUT binary to Gitea generic + sha256 +
GET round-trip. Pinned version, idempotent (delete-then-PUT).
- configs/build-golden.sh: after vzdump, compute sha256 + PUT golden.tar.zst to Gitea
generic (version = baked controller version). Opt-in; local auto-discovery stays fallback.
- cmd/felhom-agent/main.go: version 0.42.0 -> 0.43.0.
- README: process model now canonical (non-root + publish/install).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
DR recipe slice (agent half), grounded in SPIKE-dr-recipe-2026-06-16. Additive
`dr_recipe` host-report section = the non-secret reconstruction scaffolding the
operator must rebuild before PBS bytes can land. Built by pure
BuildDRRecipeHostHalf from facts the report already collects (no new reads):
guests[] sizing, drives[] (user-data by durable_id/role/mount/intent),
pve_storage[] (storage.cfg), pbs coordinates.
BOUNDARY (Phase-1 lesson): every field is an identifier/intent/size/coordinate —
never a key/password/token/hash/ENC:. PBS key stays in escrow; restic password
stays in escrow; the recipe names only the coordinates the restore targets.
Tests: BuildDRRecipeHostHalf selection, NoPBS, NoSecrets (boundary mirror),
dr_recipe key-set in the cross-repo golden contract test. recipe_version=1,
ignore-unknown on read.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
TASK A — close out the reboot story (agent half). Root cause (pinned live on
felhom-pve): an enrolled .mount unit left `disabled` by a prior detach never
auto-mounts at boot, and kernel re-enumeration can move a drive's node
(/dev/sdb->sdc). Fix re-asserts every enrolled mount by filesystem UUID at
startup + on the periodic tick.
- ResolveStorageDevice: resolve uuid:<fs-uuid> -> current /dev node via
/dev/disk/by-uuid (never a cached node); errors if absent.
- parseFelhomMountUnit: pure inverse of renderMountUnit (marker-gated).
- (*SudoHostOps).ReassertEnrolledMounts: re-run EnsureMount (enable --now) for
any enrolled unit not in /proc/mounts; idempotent, skips mounted/absent.
- main.go: runs before ReassertGuestBinds at startup + on the 20s tick.
- tests (Linux, seam=device resolution): letter-move tolerated (sdb->sdc) +
red-proof companion, absent/scheme rejection, render->parse round-trip.
TASK A2 verdict: enrolling a NEW drive does NOT need an LXC restart — the path
lands on the live AttachDrive (shared parent, named live slots), not RebootGuest.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Fill the slice-3 storage_targets stub and add the fast-poll storage watchdog.
Read-only this phase; the host-root surface (mounts/SMART/grow/destructive gate)
is Phase B. Hub-owned desired manifest is slice 10, so reconcile against it is
built-but-unfed.
- internal/storage: StorageTarget wire contract, durable_id derivation per type,
HostReader seam (procfs/sysfs, root-free), Observer (storage_targets from
ListStorage/NodeStorage + host reads, lvmthin thin-pool fill), and the watchdog
(third daemon goroutine; debounced out-of-band report on a known target's
attach/disconnect transition).
- proxmox.Storage: additive parse-only config fields (durable_id sources).
- collector StorageObserver seam; Loop.SetTrigger out-of-band report; daemon runs
the watchdog as a third goroutine; StorageConfig knobs.
- cross-repo golden kept byte-identical with felhom.eu/hub; bidirectional key-set test.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Stand up the felhom-agent project (module gitea.dooplex.hu/admin/felhom-agent,
binary felhom-agent) and the internal/proxmox package: the typed library every
other agent module calls to talk to Proxmox.
- API-first Client (hand-rolled REST over net/http, PVEAPIToken auth) with typed
read ops (version/nodes/status/lxc/config/storage) and async mutating ops
(restore/vzdump/snapshot/rollback/delete-snapshot/setconfig/start/stop), each
returning a UPID. WaitTask polls task status until stopped and asserts
exitstatus OK (authz can surface at task exec, not the POST — phase1-2 §1.3).
- Fenced Privileged (root-CLI) backend for the THREE proven exceptions only
(keyctl pct create, USB mount/fstab, SMART/sensors); each cites why it can't be
the API. Fence is structural (Client never shells out, Privileged never HTTPs)
and asserted in routing_test.go.
- TLS: SHA-256 leaf-cert pinning or CA file; insecure mode explicit + off by
default. No blanket verification disable.
- 403 -> privilege-named APIError; failed task -> privilege-named TaskError.
- JSON config + env overrides (token never logged); slog logging.
- cmd/felhom-agent --selftest (read-only health report) + gated --selftest=task
(reversible snapshot/rollback/delete exercise of WaitTask). No daemon loop yet.
- Types grounded in the spike findings and exact JSON shapes captured live from
demo-felhom (PVE 9.2.2). Unit tests use a mock transport + runner.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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