A server that I administer from time to time has been running out of space. I manually deleted all of the logs and freed up a ton of space. I turns out that there are lots of wget calls on this server and as more customers were added the number of lines in the Apache logs increased tremendously.
The access log was rotated weekly but it gets to be very large and on an old machine with only 70GB total, it adds up. I changed the log rotation in /etc/logrotate.d/apache2 to daily from weekly and keep them for 1 day instead of 26 weeks. The free space has remained at 10% since I made the change.
/var/log/apache2/*.log {
daily
missingok
rotate 1
compress
delaycompress
notifempty
create 640 root adm
sharedscripts
postrotate
if [ -f "`. /etc/apache2/envvars ; echo ${APACHE_PID_FILE:-/var/run/apache2.pid}`" ]; then
/etc/init.d/apache2 reload > /dev/null
fi
endscript
}