I use collectd and a few quick perl scripts to monitor and alert on overall VM usage (including network traffic); but if I'm investigating a problem a combination of tcpdump, netstat and iftop are my weapons of choice to help drill down to what is chewing bandwidth. I've never really had to break those out for my BitFolk VM, but I do quite regularly for my home server (due to greater bandwidth limitations).

~Mat

On 13 June 2013 16:49, Andy Smith <andy@bitfolk.com> wrote:

On Tue, Jun 11, 2013 at 01:51:06PM +0000, Andy Smith wrote:
> Sometimes customers approach their data transfer quota and are
> warned, but don't know the best way to see what is going on.
> Typically they want a breakdown of bandwidth usage by remote host,
> from a single host (their VPS).
>
> I know what I tend to use for this, but I was wondering what the
> rest of you use?

No one knows? Or you're all too shy?

Okay, I'll start.

I mostly just use simple bandwidth graphing in cacti to see when
there's anything out of the ordinary and then use tcpdump/wireshark
to work out what is the abnormal traffic.

If it's more complicated than that then I'll use ntop to get a
breakdown by IP address and port/protocol.

Cheers,
Andy

--
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> The optimum programming team size is 1.
Has Jurassic Park taught us nothing? — pfilandr

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