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4 commits
| Author | SHA1 | Message | Date | |
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Ben Barclay
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5cf6e28a2f
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fix(gateway): auto-start after container restart via planned-stop marker (#42675) (#43236)
* fix(gateway): auto-start after container restart via planned-stop marker
On Docker (s6-overlay), the gateway runs as a dynamically-registered s6
service. When the container stops/restarts/upgrades, s6 sends the gateway
a plain SIGTERM. The shutdown path (_stop_impl) ended with an
unconditional _update_runtime_status("stopped"), persisting
gateway_state=stopped to the volume. container_boot.py reads that on the
next boot and only auto-starts gateways whose last state was "running"
(_AUTOSTART_STATES) — so after a routine `docker compose up
--force-recreate` the gateway stays down and messaging channels silently
go dark, with no error surfaced (issue #42675).
The codebase already distinguishes intentional stops from unexpected
signals via the planned-stop marker (write_planned_stop_marker /
consume_planned_stop_marker_for_self): `hermes gateway stop`,
systemd/launchd ExecStop, and Ctrl+C write a marker before signalling,
so the handler classifies them as planned. An unmarked SIGTERM
(container/s6 restart, OOM, bare kill) is signal-initiated.
This wires that existing classification through to the state persist,
rather than adding unreliable signal-source inference:
- run.py: GatewayRunner._signal_initiated_shutdown, set in
shutdown_signal_handler's unmarked-signal branch. In _stop_impl, a
signal-initiated (non-restart) teardown now persists "running" instead
of "stopped" — preserving the operator's run-intent and overwriting the
mid-shutdown "draining" marker so _AUTOSTART_STATES matches on reboot.
Operator stops and restarts persist "stopped" as before.
- service_manager.py: S6ServiceManager.stop() now writes the planned-stop
marker for the supervised PID (read from s6-svstat) before `s6-svc -d`,
so an in-container `hermes gateway stop` is correctly classified as
intentional (parity with the systemd/launchd/host stop paths, which
already mark). Best-effort: a marker-write failure falls back to the
safe signal-initiated path.
Tests: shutdown persist-decision table (signal→running, operator→stopped,
restart→stopped), s6 stop marker write + svstat PID parse + failure
tolerance. The signal→running and s6-marker tests fail without the
respective source change. Verified end-to-end against a container built
from this branch: an unmarked SIGTERM to the live gateway leaves
gateway_state=running (shutdown-context log confirms signal path);
existing real container-restart suite still green.
* docs(docker): clarify gateway autostart distinguishes operator-stop from container-kill
The per-profile-supervision section described the autostart-across-restart
contract as "running gateways come back, stopped stay stopped" without
spelling out what records 'stopped'. That contract was the source of
#42675 confusion: users expected a restart to bring the gateway back and
it didn't. With the write-side fix, only an explicit `hermes gateway stop`
records 'stopped'; container/s6 restart SIGTERMs (incl. image upgrades and
unexpected exits) leave the state 'running' so the gateway auto-starts.
Make that distinction explicit in both the multi-profile and
per-profile-supervision sections.
* test(docker): real-restart autostart E2E for #42675
Adds test_live_gateway_autostarts_after_real_restart_without_manual_state_stamp:
a live s6-supervised gateway is killed by an actual `docker restart`
SIGTERM (no manual gateway_state stamp, no planned-stop marker) and must
auto-start on the next boot. Exercises the WRITE side of the fix that the
existing stamp-based tests bypass.
Verified to FAIL against an origin/main image (reconciler logs
prior_state=stopped action=registered — the #42675 bug) and PASS against
the fixed image (prior_state=running action=started).
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Ben
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cd5b2c4123
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test(docker): poll for boot-log signal instead of fixed sleeps
PR #30136 review item O6: test_container_restart.py used fixed `time.sleep(8)` calls after `docker restart` to wait for the cont-init reconciler to finish. Fixed sleeps are slow when the event happens fast and false-fail when the event happens slow. Replace with two polling helpers: * `_wait_for_path(container, path, kind='f' | 'd', deadline_s=...)` — generic `test -f/-d` poller. Returns True on success, False on timeout; callers assert with a clear message. * `_wait_for_reconcile_log_mention(container, profile, ...)` — the reconciler's per-profile log line is the canonical signal that the cont-init reconcile has finished for that profile. Poll on it instead of a sleep that hopes 8 seconds is enough. The fixture-level setup wait is similarly migrated: it now polls for `profile=default` in the boot log (every container always gets a default-slot entry per item I1) and raises a clear timeout error from the fixture if the container never finishes cont-init — much better diagnostics than a mid-test KeyError. The remaining `time.sleep()` calls are all internal interval_s between probe attempts; no fixed wait points left. |
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Ben
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fc39296e1f
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fix(service_manager): s6 detection works for unprivileged hermes user
PR #30136 review surfaced two issues, both rooted in the same audit gap: docker integration tests were running as root, not the unprivileged `hermes` user (UID 10000) that the runtime actually uses via `s6-setuidgid hermes`. Anything that probed PID-1 state or wrote to the s6 control surface worked as root in the tests but was inert in production. Fixes: 1. `_s6_running()` previously called `Path("/proc/1/exe").resolve()`, which is root-only readable. For UID 10000 the symlink yields PermissionError, `resolve()` silently returns the unresolved path, and `exe.name == "exe"` — so detection always returned False, the service-manager runtime-registration path was inert, and every `hermes profile create` / `hermes -p X gateway start` silently skipped the s6 hook. Replace with `/proc/1/comm` (world-readable) + `/run/s6/basedir` (s6-overlay-specific) — both required, fail closed. 2. `02-reconcile-profiles` now also chowns `/run/service/.s6-svscan/` {control,lock} to hermes so `s6-svscanctl -a/-an` works without root. Previously the directory chown stopped at `/run/service` and the FIFO inside stayed root-owned, so `register_profile_gateway` from hermes failed at the rescan-trigger step with EACCES — the wrapper in profiles.py caught the exception and printed a swallowed warning, so profile creation appeared to succeed while the slot was rolled back. Audit changes to flush this class of bug next time: - Add `docker_exec` / `docker_exec_sh` helpers to `tests/docker/conftest.py` that default to `-u hermes`. The module docstring explains why and flags `user="root"` as opt-in only for tests that explicitly need root (none currently do). - Refactor every `docker exec` call in tests/docker/ through the new helpers (test_dashboard.py, test_zombie_reaping.py, test_profile_gateway.py, test_container_restart.py, test_s6_profile_gateway_integration.py). - Add 5 unit tests covering `_s6_running` under various probe states (both signals present; comm wrong; basedir missing; PermissionError on /proc/1/comm; missing /proc — non-Linux). The PermissionError test is the explicit regression guard for the original bug. Known follow-up: the per-service `supervise/control` FIFO inside each `/run/service/gateway-<profile>/supervise/` is created root-owned by s6-supervise (which runs as root because s6-svscan is PID 1). `s6-svc -u/-d/-t` from the hermes user will get EACCES on those. The audit under `-u hermes` will reveal this in lifecycle tests — surfacing the issue cleanly so it can be fixed in a focused follow-up (likely via a small SUID helper or a polling chown loop in cont-init.d). The detection + svscanctl fixes here are independent and complete on their own. |
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Ben
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2afefc501c
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feat(docker): per-profile s6 supervision + container-restart reconciliation
Phase 4 of the s6-overlay supervision plan. Activates the Phase 3
S6ServiceManager by hooking it into the profile lifecycle and the
`hermes gateway start/stop/restart` dispatcher, and adds a cont-
init.d-time reconciliation pass that survives `docker restart`.
Task 4.0 — container-boot reconciliation:
/run/service/ is tmpfs, so every `docker restart` wipes every
per-profile gateway slot. /etc/cont-init.d/02-reconcile-profiles
invokes hermes_cli.container_boot.reconcile_profile_gateways() on
every boot, which walks $HERMES_HOME/profiles/<name>/, reads each
gateway_state.json, recreates the s6 service slot, and auto-starts
only those whose last state was 'running'. Other states
(stopped, starting, startup_failed, missing) register the slot
in the down state — avoiding crash-loops across restarts for a
gateway that was broken last boot. Per-profile outcome is recorded
to $HERMES_HOME/logs/container-boot.log.
Implementation: hermes_cli/container_boot.py + 12 unit tests.
Profile-marker is SOUL.md, not config.yaml, because `hermes profile
create` only seeds SOUL.md by default (config.yaml comes from
`hermes setup`).
Task 4.1 / 4.2 — profile create/delete hooks:
hermes_cli/profiles.py::create_profile now calls
_maybe_register_gateway_service(<canon>) at the end, which routes
through ServiceManager.register_profile_gateway when running on s6
and no-ops on host backends. delete_profile mirrors with
_maybe_unregister_gateway_service. _allocate_gateway_port produces
a deterministic SHA-256-derived port in [9200, 9800).
Task 4.3 — gateway dispatch + remove rejection arms:
_dispatch_via_service_manager_if_s6(action) intercepts
start/stop/restart at the top of each subcommand and routes them
through S6ServiceManager.{start,stop,restart}. The pre-Phase-4
`elif is_container():` rejection arms are kept as fallback for
pre-s6 containers / unsupported runtimes, but only ever fire when
detect_service_manager() != 's6'. install/uninstall under s6
print informational guidance pointing users at profile create/delete.
Removed the two xfail(strict=True) markers from
tests/docker/test_profile_gateway.py — both tests now pass strictly.
Task 4.4 — status reporting:
get_gateway_runtime_snapshot() reports
Manager: 's6 (container supervisor)' inside an s6 container instead
of 'docker (foreground)'.
Plan-vs-reality drift fixed in this commit:
- Plan's S6ServiceManager._render_run_script used
`gateway start --foreground --port {port}` — invented args; the
real CLI is `gateway run`. Switched accordingly. port arg
retained for API parity but now documented as 'currently ignored'.
- Plan's reconciler keyed on config.yaml; switched to SOUL.md
(config.yaml is created by hermes setup, not by hermes profile
create, so the original gate caught nothing).
- The plan's _dispatch helper used _profile_arg() which returns
'--profile <name>' (i.e. with the flag prefix). Switched to
_profile_suffix() which returns the bare name.
- Architecture B's docker exec doesn't get /command on PATH or
the venv on PATH; Dockerfile's runtime PATH now includes
/opt/hermes/.venv/bin so 'docker exec <c> hermes ...' works
without sourcing the venv.
- stage2-hook now chowns $HERMES_HOME/profiles to hermes on every
boot, not just on the UID-remap path. Without this, files created
by docker-exec-as-root accumulate and the next reconciler run
fails with PermissionError reading SOUL.md.
Test harness:
19 passed, 0 xfailed (the two pre-Phase-4 xfail targets flip to
passing). 78 unit tests across service_manager + container_boot +
profiles_s6_hooks + gateway_s6_dispatch. Hadolint + shellcheck
pass cleanly.
Refs: docs/plans/2026-05-07-s6-overlay-dynamic-subagent-gateways.md
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