Been scratching my head on this one for a while trying to figure out exactly how vnstat collects the data and parses it for the "Additional Bandwidth Data"
I've installed this script several times on Ubuntu servers and have never really had any issues with bandwidth monitoring and collection of data. However, the two servers I have installed this on with Debian 8 don't seem to monitor or parse or (???) the output from vnstat.
I'm looking for where vnstat stores the bandwidth data to look for a potential permissions issue but can't seem to locate it.
What's really bugging me is that collection WAS working and suddenly stopped. Take this screenshot here:
I've transferred over 2TB of data so far with lftp onto this server so far and all it has picked up is 400MB