磁盘空间突然满了，才发现是这个东西占空间。11个G的空间
修改:/etc/apache2/size-available/default
<VirtualHost *:80>
ServerName example.com
DocumentRoot /var/www/
# ErrorLog /var/log/apache2/error.log
# CustomLog /var/log/apache2/access.log combined
ErrorLog off
CustomLog /dev/null combined
</VirtualHost>