embed/config_logging_journal_unix.go
func getJournalWriteSyncer() (zapcore.WriteSyncer, error) {
	jw, err := logutil.NewJournalWriter(os.Stderr)
	if err != nil {
		return nil, fmt.Errorf("can't find journal (%v)", err)
	}
	return zapcore.AddSync(jw), nil
}
func getJournalWriteSyncer() (zapcore.WriteSyncer, error) {
	jw, err := logutil.NewJournalWriter(os.Stderr)
	if err != nil {
		return nil, fmt.Errorf("can't find journal (%v)", err)
	}
	return zapcore.AddSync(jw), nil
}
// use stderr as fallback