Xen users - Jan 2012 - Measuring domU traffic with vnstat

Hi Guys

I''m trying to measure the traffic of domUs using vnstat without luck.

My configuration:
Debian 6.0.3
xen 4.0.1
vnstat 1.11

I''m using bonding with two network cards.

auto bond0
iface bond0 inet manual
    slaves eth0 eth1
    bond-mode active-backup
    bond-miimon 100
    bond-updelay 200
    bond-downdelay 200
    bond-primary eth0

auto br0
iface br0 inet static
        address x.x.x.x
        netmask x.x.x.x
        network x.x.x.x
        broadcast x.x.x.x
        gateway x.x.x.x
        bridge_ports bond0
        bridge_fd 0
        bridge_hello 2
        bridge_maxage 12
        bridge_ageing 0
        bridge_maxwait 0
        bridge_stp off

We use network-dummy as network-script in xen configuration.

When monitoring the network traffic using vnstat the tx information of
every domU is almost the same and it seems to be the overall traffic
of the server.

                     rx      /      tx      /     total    /   estimated
domU1:
      Jan ''12       289 KiB  /   62.04 MiB  /   62.33 MiB  /       0
KiB
    yesterday       274 KiB  /   30.63 MiB  /   30.90 MiB
        today        15 KiB  /   31.42 MiB  /   31.43 MiB  /      --

domU2:
      Jan ''12       169 KiB  /   62.14 MiB  /   62.31 MiB  /       0
KiB
    yesterday        74 KiB  /   30.83 MiB  /   30.90 MiB
        today        95 KiB  /   31.31 MiB  /   31.40 MiB  /      --

domU3:
      Jan ''12        75 KiB  /   62.27 MiB  /   62.35 MiB  /       0
KiB
    yesterday        64 KiB  /   30.86 MiB  /   30.92 MiB
        today        11 KiB  /   31.41 MiB  /   31.42 MiB  /      --

bond0:
      Jan ''12     58.49 MiB  /   16.84 MiB  /   75.33 MiB  /  182.00
MiB
    yesterday     24.74 MiB  /   11.06 MiB  /   35.81 MiB
        today     33.75 MiB  /    5.77 MiB  /   39.52 MiB  /      76 MiB

br0:
      Jan ''12     28.93 MiB  /     675 KiB  /   29.59 MiB  /       0
KiB
    yesterday     10.76 MiB  /     337 KiB  /   11.09 MiB
        today     18.17 MiB  /     338 KiB  /   18.50 MiB  /      --

How to measure the traffic using vnstat or any other software?. Please help.

Best regards,

Doan

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Doan Veitia <doanvc@gmail.com> schrieb:
>How to measure the traffic using vnstat or any other software?. Please
>help.
We mainly use snmp (in conjunction i.e. with RRDTool / Cacti and own schripts)
for this (which works on DomU and Dom0 level) on interface level. This works
transparent with different guest / DomU systems and additional applications,
independently from what and how you want to count the traffic flows.

Another way may be measuring traffic on IP network/address level with regarding
tools (i.e. ntop, iftop and even xentop etc.)...


cheers,


Niels.

- --
Niels Dettenbach
Syndicat IT&Internet
http://www.syndicat.com
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> How to measure the traffic using vnstat or any other software?.
> Please help.
Openvswitch seems to have a lot of advanced features, including this.
It''s fairly new software to me though so I can''t help much
here.

Secondly you might want to read the following thread:
http://seclists.org/basics/2012/Jan/56

HTH

On Sat, Jan 14, 2012 at 3:00 AM, Mark van Dijk <mark@internecto.net>
wrote:
>> How to measure the traffic using vnstat or any other software?.
>> Please help.
>
> Openvswitch seems to have a lot of advanced features, including this.
> It''s fairly new software to me though so I can''t help
much here.
Open vSwitch provides support for NetFlow and sFlow traffic
monitoring, giving detailed visibility into traffic flows between
virtual machines. The sFlow protocol also exports per vNIC interface
counters.

http://blog.sflow.com/2011/10/comparing-sflow-and-netflow-in-vswitch.html

Cheers,
Peter