Excessive SSH Tunnel/Traffic

Sameer Verma sverma at sfsu.edu
Fri Mar 14 16:24:23 GMT 2008

Gavin McCullagh wrote:
> Hi,
> On Wed, 12 Mar 2008, Jim Kronebusch wrote:
>>> I guess it depends on how much traffic 
>>> "excessive" is. 
>> Along this line I was recommended a tool for monitoring traffic in and
>> out of the server a while ago by Gavin called ibmonitor
>> (http://ibmonitor.sourceforge.net/).  If you want to verify exactly how
>> much traffic the clients are generating you could install this on the
>> server and monitor you ethernet ports with it.  You could post the
>> results to let others decide if this is a normal amount of traffic or if
>> you indeed do have something wrong.
> An alternative to this which I've been pondering, is munin.  The idea being
> that the server (or another server) could run the munin monitoring/graphing
> software and the ltsp chroot could be running munin-node (or perhaps
> snmpd?). 
> http://munin.projects.linpro.no/
> This would give us memory usage, cpu usage, network bandwidth and other
> information from each thin client individually.  This would hopefully be a
> big help in diagnosing problems on thin clients.  There would probably be
> some tricks involved in automatically monitoring all thin clients (you
> might need to set up static ips?).
> http://munin.ping.uio.no/
> Gavin
This is a great choice. I second it. I use Munin on most of my servers.
Stats collected from the nodes would help isolate specific problems that
one may have with a client or two (faulty cards, wiring, etc).


Dr. Sameer Verma, Ph.D.
Associate Professor of Information Systems
San Francisco State University
San Francisco CA 94132 USA

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