> On Jan 26, 2021, at 8:29 AM, Michael Keuter <li...@mksolutions.info> wrote:
>
>
>
>> Am 26.01.2021 um 15:08 schrieb David Kerr <da...@kerr.net>:
>>
>> As some of you may be aware, Comcast / Xfinity are starting to impose
>> monthly data caps on internet usage. Where I live it is 1.2TB a
>> month. So I just received the dreaded "You have used 75% of your
>> allowance" email. Fortunately only 5 days from the end of the month,
>> but looking back there are months that I have exceeded the cap.
>>
>> Can I do anything in Astlinux to meter usage myself? I would want to
>> monitor raw traffic in and out on eth0, the totals would need to
>> survive reboot, I would want to reset on the first of each month and
>> maintain a history. For extra credit... be able to identify high
>> users on my internal network(s).
>>
>> Any ideas? Have any other gateways (like OpenWRT) tackled this?
>>
>> Thanks
>> David
>
> Hi David,
>
> most applications that I know use RRDtool (a Round-Robin-database to store
> data/measurements) as its basis, like Munin, Cacti, MRTG etc.
>
> https://en.wikipedia.org/wiki/RRDtool
>
> It is also available in BR2.
> Years ago I had hacked myself a Munin node (client) for AstLinux, so data
> could fetched from a Munin server on Debian in my network from my AstLinux
> boxes. But it does not work anymore or I forgot about it. But it created nice
> progress graphicss for some parameters (CPU load, traffic, Asterisk calls,
> etc.).
>
> Now since we're using SSDs instead CF cards it would be nice to have such
> application.
> My 2 cts.
>
> Michael
If we are mostly interesting in network info:
ip -s link show dev eth0
--or--
ifconfig eth0
provides network interface usage. On shutdown and/or regular cron this info
would need to be saved to persistent storage along with the sample date.
Though corner cases when the eth0 link goes down or a PPPoE ppp0 interface
comes and goes can make pure interface monitoring less accurate.
An AIF plugin could be added to do something similar, which would be required
if forwarded LAN -> WAN traffic was to be recorded. Though the matching WAN ->
LAN traffic might be a little tricky.
Then the little matter of what the ISP says the data is vs. your actual data.
Lonnie
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