openbsd-ports/net/vnstat/files
..
README.OpenBSD

$OpenBSD: README.OpenBSD,v 1.1.1.1 2010/10/25 10:14:53 pea Exp $

All the command must be launched as the user _vnstat.

1) Launch vnstat --iflist to see all the available interfaces.

2) For each interface that you want to monitor, launch this command:
   # vnstat -i interface -u
This will create the database for the specified interface.

3) Edit ${SYSCONFDIR}/vnstat.conf if necessary

4) Finally launch the vnstatd daemon:
   # /usr/local/sbin/vnstatd -d

5) Add the following to your ${SYSCONFDIR}/rc.local:
   if [ -x /usr/local/sbin/vnstatd ]; then
      echo -n ' vnstatd'
      install -d -o _vnstat /var/run/vnstat
      su -l _vnstat -c "/usr/local/sbin/vnstatd -d"
   fi

6) Create graphics with the command vnstati


Random hints:
    * You can enable debug in ${SYSCONFDIR}/vnstat.conf and check 
      the logs in /var/log/vnstat/vnstat.log