Distros reserve /opt for different things (some package managers own it
outright), and a DECNET install that wants to live at /srv/decnet or
/usr/local/decnet had to hand-edit 13 service files post-install.
Converts every deploy/decnet-*.service to a .j2 template keyed on
{{ install_dir }}, rendered by `decnet init` at install time. All other
paths (log_dir, state_dir, runtime_dir, user, group) stay standard —
only install_dir varies.
Changes:
- deploy/decnet-*.service → deploy/decnet-*.service.j2 (13 files).
- decnet init gains --install-dir (default /opt/decnet, preserves
existing behaviour byte-for-byte). Validates absolute-path at the
CLI boundary. Threads through useradd --home-dir and the dir-creation
list so the filesystem layout matches the rendered templates.
- _install_units renders via Jinja2 with StrictUndefined (typo → loud
error, not a silent broken unit). SHA over rendered output so
operators with a custom install_dir get idempotent re-runs.
- decnet.target, tmpfiles.d, polkit rule stay static — they don't
reference install paths.
- 4 new tests: custom install_dir renders into units, default remains
/opt/decnet, relative paths rejected, second run with same custom
dir is idempotent.
Creates the decnet system user/group, installs every unit file from
deploy/ into /etc/systemd/system, drops the polkit rule, seeds
/opt/decnet + /var/{lib,log}/decnet + /etc/decnet + /run/decnet,
writes a placeholder /etc/decnet/config.ini, applies the new
tmpfiles.d entry so /run/decnet survives reboots, daemon-reloads,
and `systemctl enable --now decnet.target`.
Idempotent (re-runs print [SKIP] on already-configured items),
--dry-run previews the plan without touching anything, --no-start
defers the target start, --force overwrites even matching unit
files. Master-only (added to MASTER_ONLY_COMMANDS).
9 orchestration tests cover the non-root gate, dry-run, useradd/
groupadd argv, SKIP on present user/group, unit-file idempotency,
--force overwrite, --no-start suppression, happy path, and the
"deploy/ not found" error message.
Scoped rule — matches only `decnet-<name>.service` and `decnet.target`.
Any unit outside that regex falls through to the default polkit policy.
Required so the API (running as the `decnet` user) can invoke
`systemctl start decnet-<name>.service` non-interactively.
Adds the five missing worker units plus a grouping target so
`systemctl start decnet.target` brings the whole fleet up in order.
Sniffer gets CAP_NET_RAW for scapy; collector and mutator join the
docker supplementary group for docker.sock access. Repoints
Documentation= across all existing units to the canonical
git.resacachile.cl wiki.
Land the `decnet bus` worker and `get_bus()` factory. Transport is a
host-local UNIX-domain socket (0660, group=decnet); authz is the file
mode. Wire framing is a tiny verb-line + 4-byte-BE length + orjson body.
NATS-style wildcard topics (`*`, `>`). At-most-once, fire-and-forget —
DB stays the source of truth. `FakeBus` / `NullBus` for tests and the
disabled path. Cross-host federation is deferred to a future
`--bridge-tcp` mode; DEBT-030 is master-only and unblocked.
Add deploy/ unit files for every DECNET daemon (agent, updater, api, web,
swarmctl, listener, forwarder). All run as User=decnet with NoNewPrivileges,
ProtectSystem, PrivateTmp, LockPersonality; AmbientCapabilities=CAP_NET_ADMIN
CAP_NET_RAW only on the agent (MACVLAN/scapy). Existing api/web units migrated
to /opt/decnet layout and the same hardening stanza.
Make the updater's _spawn_agent systemd-aware: under systemd (detected via
INVOCATION_ID + systemctl on PATH), `systemctl restart decnet-agent.service`
replaces the Popen path so the new agent inherits the unit's ambient caps
instead of the updater's empty set. _stop_agent becomes a no-op in that mode
to avoid racing systemctl's own stop phase.
Tests cover the dispatcher branch selection, MainPID parsing, and the
systemd no-op stop.
