You are looking for the traditional text log files in @VARLOGDIR@, and

they are gone?

Here's an explanation on what's going on:

You are running a systemd-based OS where traditional syslog has been

replaced with the Journal. The journal stores the same (and more)

information as classic syslog. To make use of the journal and access

the collected log data simply invoke "journalctl", which will output

the logs in the identical text-based format the syslog files in

@VARLOGDIR@ used to be. For further details, please refer to

journalctl(1).

Alternatively, consider installing one of the traditional syslog

implementations available for your distribution, which will generate

the classic log files for you. Syslog implementations such as

syslog-ng or rsyslog may be installed side-by-side with the journal

and will continue to function the way they always did.

Thank you!

Further reading:

man:journalctl(1)

man:systemd-journald.service(8)

man:journald.conf(5)

http://0pointer.de/blog/projects/the-journal.html