Re: Traffic Monitoring
Here is an english translation of your post from babel.altavista.com.
Its not good, but we might be able to help if we can understand what
On Tuesday, September 10, 2002, at 09:12 PM, Kauffmann, Andreas wrote:
Hello dear list;)
I have a problem would like I 3(!) Computers from different nets
supervise. That is, I would like to measure the totally caused data
communication volume (the Traffic) of the computers. At the Montsende
expression of the program should look in such a way: PC01 made 60GB
Traffic PC02 made 34,3245GB Traffic Etc.... Understands its which I
I need evenly a program for it... best for Linux, but would also go
Most people do this by grabbing the SNMP traffic statistics from the
switch or router that the machines are plugged into, and graphing the
numbers, with a product like mrtg.
also might work (and save a lot of your time):
apt-get install mrtg
MRTG works well for small numbers of hosts, however you might want to
look at NRG (http://nrg.hep.wisc.edu/) or Cricket
(http://cricket.sourceforge.net/) which both use the RRDTool back-end
database and graph generation tools. This is because MRTG generates the
graphs every 5 minutes, and RRDTool only generates the graphs the first
time they are viewed.
Cricket seems to be available via apt-get/dselect.
If you need empirical numbers that you can then use to bill against,
you might want to try writing something simple in perl with the
Net::SNMP module to just poll the network devices for their total bytes
in and out, and then to store the number in a flat file to produce a
report daily or weekly or whatever.
If you do not have SNMP access to the routers the machines are plugged
into, then you could write a script that uses the numbers from
ifconfig. For example:
kirin:~# ifconfig eth0 | grep bytes
RX bytes:659408711 (628.8 MiB) TX bytes:3695073697 (3.4 GiB)
(hmm, maybe I need to get rid of the porn site)
Write a perl (or python, or bash, or whatever your poison is) program
to do something intelligent with the numbers, being aware that they get
reset to 0 if the machine reboots, etc. You might find they roll over
at some particular number, so you might want to find out what that
number is. (Probably a 32bit unsigned int).
Maybe someone else knows of a package which would be good to bill
customers off (as this seems to be the purpose of your question).
I hope this gives you some ideas.
Nathan Ollerenshaw - Systems Engineer - Shared Hosting
ValueCommerce Japan - http://www.valuecommerce.ne.jp
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