A journald receiver reading the host's journal directory, a logs pipeline
stamped with the swarm tier's own resource processor, and an otlphttp
exporter pointed at VictoriaLogs. All four parts are conditional on the log
store being enabled, so a swarm without one renders exactly as before.
The host's directory is enough to see every container: nspawn links a
non-ephemeral container's journal guest-side, so the files live on the host
under the container's machine-id, and journalctl descends into those
subdirectories. Measured, along with the fixed systemd-journal gid that makes
the group grant meaningful across the bind mount.
0c755e04c8