Initial configuration
add users
adduser <username> vim /etc/group
If necessary, add permissions to the respective user
visudo
change hostname
hostname <newname>
install bandwith monitor
yum -y install vnstat
Run the following command to establish the database:
vnstat -u -i eth0
Then enter the same command into the crontab to be executed every hour:
crontab -e 0 * * * * root vnstat -u -i eth0
Check daily, weekly or monthly bandwidth usage with vnstat -d, vnstat -w or vnstat -m, e.g.
vnstat -m
A web frontend can be found at http://www.sqweek.com/sqweek/index.php?p=1