felhom.eu/REPORT.md

felhom.eu — task reports

Overwrite this file with a summary of the most recent task only (uniform with the other repos; not cumulative). The cumulative hub history lives in hub/CHANGELOG.md; the scripts history lives in scripts/CHANGELOG.md.

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REPORT — felhom-host-install.sh --uninstall (clean revert) + pre-flight guards (host-install v1.3.0)

Date: 2026-07-01 · Repo: felhom.eu (scripts/ only)

Colleague-safety batch #1 (--uninstall) + #2 (pre-flight guards). Script-only. A first-class, guarded local host-teardown mode so an operator can cleanly back out of a trial install, plus three provision pre-flight guards. Specced, built, and validated dry-run-only (the live --uninstall is a supervised step and was deliberately NOT run — see the STOP list).

1. Confirmed baseline

Repo	main @ commit	Current	→ Target
felhom.eu (scripts/felhom-host-install.sh)	83c4f7f7	script v1.2.0	v1.3.0

No agent/controller/hub change in this task.

2. Files changed

• scripts/felhom-host-install.sh (v1.2.0 → v1.3.0) — the only code file.
• scripts/CHANGELOG.md — v1.3.0 entry (newest on top; this is where the v1.2.0 entry lives).
• REPORT.md — this file (overwritten).

3. Commit hash(es)

• 6db68f4 on main (parent 83c4f7f).

4. What was implemented

Part 1 — install state records vmid + customer. New _state_put KEY VALUE / _state_get KEY helpers (python3, dry-run-guarded like _state_mark, completed[] shape untouched). step_preflight now records customer_id; step_provision records provisioned_vmid on success (dry-run logs only).

Part 2 — --uninstall mode (early top-level dispatch, root-required, no --customer-id, no hub contact, no passphrase). run_uninstall reverses install order: guest → agent(unit+.bak / sudoers / binary+.bak / state dir / user) → pveum(ACL user, ACL token, token, user, role) → golden(opt-in) → state file. Every mutation via run() (dry-run prints, executes nothing). Guards: ours-check on the /etc/felhom-bootstrap bind mount (matched by the constant guest path, not a slot), typed vmid confirmation (/dev/tty, skipped only in dry-run), other-Felhom-guests safe-skip (keeps host-level in place unless --force), state-mismatch --force gate, and idempotent tolerate-absent on every object. --remove-golden opt-in deletes the golden vzdump (pvesm free). Never removes the sudo package; never contacts the hub. New helper felhom_guests() enumerates Felhom guests by the bootstrap mount.

Part 3 — pre-flight guards (all inside step_preflight, before any mutation → fire under dry-run): multi-node guard (die unless --node explicit via new NODE_EXPLICIT; no-op single-node / under --skip-provision), archive-storage-exists guard (pvesm status --storage; no-op under --skip-provision), RAM floor WARN (MemAvailable < 2048 MiB, never fatal).

Confirmed the PVE 9 ACL-delete syntax live before wiring it: pveum acl delete <path> --users|--tokens <x> --roles <role>.

5. Green gate — bash -n + shellcheck

• bash -n scripts/felhom-host-install.sh → OK (locally + on felhom-pve).
• shellcheck v0.10.0 (fetched static binary on the build server; shellcheck isn't installed on any box): HEAD v1.2.0 baseline = 2× SC2015 (info); v1.3.0 = 2× SC2015 (info) at lines 1128 & 1138 — both in the pre-existing step_verify (A && B || C), untouched by this task. 0 new warnings.

6. Tests → §7 mapping (dry-run transcripts / read-only live checks on felhom-pve, single-node, live guest 9201)

#	Scenario	Result
T-A	full clean-uninstall plan (--uninstall --vmid 9201 --dry-run)	PASS — ours-check passes, prints pct config 9201, would-prompt for typed confirm, then the full plan: pct stop/destroy 9201 → agent removal (unit + all .bak-*, sudoers, binary + all .bak-*, rm -rf /var/lib/felhom-agent, userdel) → pveum acl delete (user, then token) → token remove → user delete → role delete last → golden skipped → state file rm. All [DRY-RUN]. sudo package NOT touched; hub note printed.
T-B	other-guests detector	PASS — felhom_guests() enumeration prints only 9201 (only Felhom guest on the host). Skip-branch code-reviewed (2nd Felhom guest not available live).
T-C	not-ours refusal (red-proof)	PASS — --uninstall --vmid 9001 --dry-run (9001 exists, no bootstrap mount) → die "vmid 9001 does not look like a Felhom-provisioned guest … Refusing to destroy. Pass --force to override.", exit 1, dies before any run(). Nonexistent id 987654 → safe refusal ("absent and is not the recorded provisioned_vmid … --force").
T-D	multi-node guard	PASS (single-node) — node: demo-felhom (auto), guard is a no-op on the 1-node host; multi-node die code-reviewed. Live multi-node validation deferred (see STOP).
T-E	storage / RAM guards	PASS — --dry-run --archive-storage nonesuch → die "archive storage 'nonesuch' not found (pvesm status)…" before the passphrase prompt; normal dry-run prints the RAM line (free RAM: ~12251 MiB; the <2048 WARN branch is code-reviewed — the box has 12 GiB free).
T-F	dry-run executes nothing	PASS — after all dry-runs: pct status 9201 = running, felhom-agent active, binary present, pveum user + role present, state.json unchanged (no provisioned_vmid added — dry-run writes nothing).
Part 1	_state_put/_state_get round-trip	PASS — isolated temp-file test: writes top-level customer_id/provisioned_vmid, preserves completed[], reads both back.

7. Served-copy version check (after push)

curl -fsSL https://felhom.eu/scripts/felhom-host-install.sh | grep SCRIPT_VERSION
# expect: SCRIPT_VERSION="1.3.0"

→ SCRIPT_VERSION="1.3.0" (served copy confirmed v1.3.0 ~1 min after push).

8. NOT yet live-validated — awaiting a supervised run

• A real live --uninstall (actual guest destroy + pveum role/user/token/ACL removal + userdel
  • state wipe). Deliberately not run per the TASK STOP — do it on the colleague's box or a throwaway scratch guest, never the demo guest 9201.
• The multi-node guard on an actual 2+-node cluster (felhom-pve is single-node).
• The other-Felhom-guests safe-skip branch with a second live Felhom guest present.

9. Observations (noticed, NOT acted on)

• In --dry-run, run_uninstall prints [OK] guest <vmid> destroyed after the [DRY-RUN] pct destroy lines; the trailing [DRY-RUN]: nothing above was actually executed. clarifies it, and this mirrors the existing dry-run success-logging pattern — left as-is (minimal change).
• Colleague-safety batch items #3 (CPU/mem cap, agent-side) and #4 (pool-scoped ACL) are separate specs; not touched here.