12:14 p.m.
I am really excited to start using this, but I have a couple of
questions about how to use it exactly. I want to be able to pull a list
of stats out of my Xen machines. I need to get something like network
i/o. I just need to know how much in and out traffic that a specific
machine is doing. I am pretty new to python and to programming in
general. I have looked at the APi and stuff like that, but am a little
confused still on how to actually do this. Mainly I just need to know
how to connect to certain things.
Once I have a basic understanding of what is going on then I can take it
from there. Thanks for all the help!
Spencer Parker
2:28 p.m.
On Mon, Mar 03, 2008 at 11:14:05AM -0700, Spencer Parker wrote:
I am really excited to start using this, but I have a couple of
questions about how to use it exactly. I want to be able to pull a list
of stats out of my Xen machines. I need to get something like network
i/o. I just need to know how much in and out traffic that a specific
machine is doing. I am pretty new to python and to programming in
general. I have looked at the APi and stuff like that, but am a little
confused still on how to actually do this. Mainly I just need to know
how to connect to certain things.
Once I have a basic understanding of what is going on then I can take it
from there. Thanks for all the help!
There is a couple of C code examples at
http://libvirt.org/examples/index.html
unfortunately this is a bit lacking.
Fetch the sources, you can find a directory python/tests with python
examples. For 'how to connect' pass a connection URi to the connection
creation call instead of NULL/None there are examples
http://libvirt.org/uri.html
That should not be too hard, really, and if you can contribute back
a simple C example for statistics extraction I will add it, that could
help the next person !
Daniel
--
Red Hat Virtualization group http://redhat.com/virtualization/
Daniel Veillard | virtualization library http://libvirt.org/
veillard(a)redhat.com | libxml GNOME XML XSLT toolkit http://xmlsoft.org/
http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/
4:12 p.m.
On Mon, Mar 03, 2008 at 11:14:05AM -0700, Spencer Parker wrote:
I am really excited to start using this, but I have a couple of
questions
about how to use it exactly. I want to be able to pull a list of stats out
of my Xen machines. I need to get something like network i/o. I just need
to know how much in and out traffic that a specific machine is doing. I am
pretty new to python and to programming in general. I have looked at the
APi and stuff like that, but am a little confused still on how to actually
do this. Mainly I just need to know how to connect to certain things.
You can actually just do this directly with virt-top:
virt-top -csv file.csv
You'll get a new line of stats in the CSV file every (by default) 3
seconds, and if you look at the "Net RXBY" and "Net TXBY" columns for
each domain that will tell you bytes received and bytes sent in that 3
second period. You can also feed the CSV output into a pipe and
process it using another program in real time.
Rich.
--
Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones
virt-p2v converts physical machines to virtual machines. Boot with a
live CD or over the network (PXE) and turn machines into Xen guests.
http://et.redhat.com/~rjones/virt-p2v
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2 comments
3 participants
participants (3)
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Daniel Veillard -
Richard W.M. Jones -
Spencer Parker