The size of the MySQL log files (mysqld.log*) is checked every 7 days. If the log files consume more than 1 GB of total disk space at the time they are checked, the files are deleted.
If you want to delete the log files before the automatic check runs on day 7 or before the files reach the 1 GB threshold, you can manually trigger the log files to be deleted:
Restart the MySQL database appliance (as described in Shutting Down and Restarting the Novell Appliance
in the Filr 2.0: Administration Guide).
or
Run the flush logs command from the MySQL appliance (mysqladmin flush-logs).