The shared front half of provision and guest-loss DR as a journaled reconcile job
(internal/reconcile/bringup.go), mirroring the restore-test's crash-safety but keeping
the guest on success and applying a scenario-specific identity policy. Agent-only; no
hub/wire change. Grounded by the slice-7 bring-up spike (commit 3342993): F1/F3/F4.
- RunBringUp: restore -> reset identity -> size -> attach mounts -> start link-up;
verdict is liveness (waitRunning), success KEEPS the guest.
- identity policy: provision = fresh MAC (net0 sans hwaddr -> PVE regen) + hostname,
host-side; machine-id/host-keys regenerate guest-side (systemd + baked golden unit).
dr_guest_loss = preserve continuity (keep hostname; keep MAC unless KeepMAC=false).
- compensating rollback: mid-flight failure destroys the just-created guest
(SameTxnCreated provenance, gated); new Rollback journal flag + Recover.recoverBringUp
reap a half-built guest from a crash.
- F4: coalesced config PUT + bounded retry on the transient PVE config-lock 500 only.
- --selftest=bring-up (mode/archive/vmid/hostname/keep).
- configs/build-golden.sh: validated golden recipe incl. the F3 first-boot host-key unit.
- doc-03 §9 + identity-reset settled/implemented.
Deferred (stated): provisioning back half -> slice 8; host-loss DR + escrow consumption
and the BringUpSpec source (hub desired-state) -> slice 10.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The security core of slice 4: hub-supplied intent is no longer trusted for
destructive change. The gate fronts the per-guest queue's executor, so every
mutation passes it. Reuses internal/authz for all crypto (surface untouched).
- Classifier (doc 03 §4): benign vs destructive by provenance + data-bearing-
ness, NOT by verb. Destroy/overwrite of customer data is destructive unless
agent-internal provenance (same-journaled-txn create, or agent-tagged scratch)
makes it benign — and that provenance is journal-recorded, NEVER hub-sourced.
Unknown op class fails safe to destructive.
- Reversibility gate: benign -> allowed unsigned; destructive -> requires a
verified, role-scoped, action-bound operator signature, else pending_signature
and never executed. Every decision audited (signal, never the guard).
- Signed-op consuming layer over authz.Verifier.Verify (locked pipeline
untouched): role-scoping (doc 04 §4 — recovery=rotation only, operational=
ordinary destructive + planned rotation) + op-to-action binding (op+host+
guest+params must match the gated action).
- Signed-job orchestration: idempotency dedupe by nonce + journal-wrapped
execution via an injected DestructiveExecutor (nil this slice — inert).
- Crash recovery (Note 1): Engine.Recover consumes the journal InFlight() set at
startup (resume-or-rollback) — covers an op that crashed after the POST and
before its terminal record, which idempotency dedupe alone cannot. Added
TaskStatusOnce to the GuestAPI seam. Wired into daemon startup.
- Note 2: memory comparison canonicalized to MiB (desiredMemoryMiB) so a
non-MiB-aligned MemoryBytes converges in one pass, not perpetual drift.
- Daemon: builds the verifier from config signers (none = nil verifier, the
common slice-4 state), the gate (+SlogAudit), runs Recover before mutating.
Adversarial matrix proven against the REAL authz.Verifier with in-test-minted
SSHSIGs (framing replicated in reconcile's test binary; authz untouched, no
signing added to the verify-only package): unsigned job + unsigned desired-state
delta -> pending_signature; unknown signer/expired/replay-across-restart/wrong
host -> typed authz rejections; wrong guest/op/params -> binding_mismatch;
recovery key on ordinary destructive -> role_denied; hub-supplied scratch tag
ignored -> refused; valid+role+target+fresh nonce -> accepted then replay
rejected. Full module race-clean + vet-clean on the Linux build server.
Inert this slice: no destructive deltas served until slice 10; the destructive
path is classified, gated, and tested but not wired to live execution.
CHECKPOINT: Phase B complete (slice 4 done). Awaiting validation.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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