Be aware that CSV files created with outputcsv command will usually be outside of /etc directory. In case you have important CSV files here, make sure that those are backed up as well.
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I suggest that if you are going to use syslog you make it syslog over TCP (by default it is UDP), and that you use (Balabit's) syslog-ng as your syslog server - it is way more configurable than the default rsyslogd.
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