What to do with this warning
bash -c "cat /var/log/messages |grep warning"
Jun 20 18:12:01 Turris_JB syslog-ng[1988]: WARNING: Configuration file format is
too old, syslog-ng is running in compatibility mode. Please update it to use the
syslog-ng 4.2 format at your time of convenience. To upgrade the configuration, please review the
warnings about incompatible changes printed by syslog-ng, and once completed change the
@version header at the top of the configuration file; config-version='4.1'