Apacheのログのrotateを行う
vi /etc/logrotate.d/httpd
以下のソースをコピペする
/usr/local/apache2/logs/*access_log /usr/local/apache2/logs/*error_log {
missingok
notifempty
sharedscripts
monthly
rotate 6
postrotate
/bin/kill -HUP `cat /usr/local/apache2/logs/httpd.pid 2>/dev/null` 2> /dev/null || true
endscript
}