0.2.1

This release focuses on reliability improvements for production installs (systemd timer), and safer execution on multi-machine fleets.

Highlights

• No more double jitter when installed via systemd

  • The timer uses RandomizedDelaySec.
  • The service runs the script with --max-random-delay-seconds 0.

• Concurrency protection

  • Uses flock (if available) to prevent parallel runs and avoid APT/dpkg lock conflicts.

• More reliable GitHub requests

  • Adds an explicit User-Agent header for GitHub API calls and raw downloads.

• Safer input handling

  • Validates numeric flags (--delay-days, --max-random-delay-seconds, --log-retention-days) before running.

Upgrade notes

• If you installed systemd units previously, re-run:

  sudo ./netbird-delayed-update-linux.sh --install

  to update the installed service unit (and remove the double random delay).

Full changelog

See CHANGELOG.md for details.