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Josh Siviour 6f4aa495e6 feat: reconcile systemd unit files on upgrade (#771)
* feat: reconcile systemd unit files on upgrade

Unit files were written once at install time by install_systemd() in
scripts/setup.sh and never re-asserted. A node upgraded by swapping the
spx binary kept whatever units it was installed with, so any fix that
lives in a unit rather than in code never reached it.

This is not theoretical. A node whose spinifex-viperblock.service
predates KillMode=process defaults to KillMode=control-group, so on a
target stop TimeoutStopSec expires mid-flush and systemd cgroup-SIGKILLs
every nbdkit while guest QEMU survives in the daemon's own cgroup: the
guest keeps running with no storage path.

Units are now stamped with a spinifex-unit-version marker, embedded in
the binary via a generated file, and reconciled by spx admin upgrade.
Missing or version-stale units are replaced after a timestamped backup;
a unit at the current version whose content differs is reported as
operator-modified and never overwritten. Drop-ins under <unit>.d are
untouched, so systemctl edit overrides survive.

Nothing is restarted. A daemon-reload is enough for KillMode and
TimeoutStopSec to apply to the next stop, so drift is corrected without
disturbing a running guest.

Adds --dry-run, --units-only and --skip-units to spx admin upgrade.

* test: cover systemd reconcile error paths and the admin upgrade CLI flow

Diff coverage on the unit-migration PR sat at 45.8%, below the 60% gate.
Adds tests for reconcile.go's error/edge paths (unreadable unit, backup
and write failures, daemon-reload failure, malformed version markers,
downgrade-is-conflict) and drives admin_upgrade.go's CLI flow directly
via an injectable exit and a decision matrix extracted into
validateUpgradeFlags/upgradeSummary for testability.
2026-08-12 22:29:48 +10:00

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SYSTEMD

# spinifex-unit-version: 1
[Unit]
Description=Spinifex Infrastructure Platform
After=network-online.target
Wants=network-online.target
Wants=spinifex-nats.service spinifex-predastore.service spinifex-northstar.service spinifex-viperblock.service spinifex-daemon.service spinifex-awsgw.service spinifex-vpcd.service spinifex-ui.service spinifex-qmp-collector.service spinifex-shutdown.service spinifex-nats-watchdog.timer openvswitch-switch.service ovn-controller.service
[Install]
WantedBy=multi-user.target