[CentOS-virt] Need info on vnet mapping to guests
Neil Aggarwal
neil at JAMMConsulting.com
Sat Oct 24 19:14:22 UTC 2009
Hello:
I have a host running two KVM guests. The guests
use br0 and each has a static IP address.
I am trying to figure out if there is a way to
use snmpd on the host to measure the traffic
usage of the guests. I do not want to require
anything running on the guests since I do not
control them.
Looking at netstat -in on the host, I see this
info:
Kernel Interface table
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP
TX-OVR Flg
br0 1500 0 237609 0 0 0 13615 0 0 0
BMRU
eth0 1500 0 967594 0 0 0 354576 0 0 0
BMRU
lo 16436 0 63 0 0 0 63 0 0 0
LRU
virbr0 1500 0 0 0 0 0 32 0 0 0
BMRU
vnet0 1500 0 29802 0 0 0 306940 0 0 0
BMRU
vnet1 1500 0 311556 0 0 0 789331 0 0 0
BMRU
Looking at the firewall logs for packets that hit the firewall,
I see that vnet1 is connected to guestA and vnet0 is connected to
guestB.
Is there a better way to determine which vnet is connected to
which guest?
Also, does the mapping change when I stop and start guests
or reboot the host?
Thanks,
Neil
--
Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com
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