Syslog, auth.log, kern.log and messages log files are not updated anymore after upgrading to Debian Wheezy (Debian Squeeze was previously running).
How could I fix it?
I figured the exact issue has been encountered by other Debian users (http://forums.debian.net/viewtopic.php?f=5&t=104049).
To restore logging, one just needs to reinstall the syslog daemon (removed during upgrade):
Came here because one of our Customers Servers was upgraded from Debian Etch (4.0) to Jessie (8.1) last week and
It turns out that in Debian 7
Just installed rsyslog-Package as mentioned in http://jonsimpson.co.uk/log/2014/syslogd-updated-debian and syslog is up and running again.