libvirt users - Oct 2010 - Monitoring and statistics through libvirt

Hi folks,

is it possible to monitor and gather statistics in realtime (CPU,
memory, HDD, network, ... - something like dstat) of guest systems
with libvirt through console from host system (KVM based)? If yes, do
those guests need to be created through libvirt? Thanks for your help
and time.

On Fri, Oct 01, 2010 at 03:47:23PM +0200, Tomi wrote:
> Hi folks,
> 
> is it possible to monitor and gather statistics in realtime (CPU,
> memory, HDD, network, ... - something like dstat) of guest systems
> with libvirt through console from host system (KVM based)? If yes, do
> those guests need to be created through libvirt? Thanks for your help
> and time.
  look at
  virDomainBlockStats/virDomainInterfaceStats/virDomainMemoryStats
in the library API, as well as the equivalent commands in the virsh
command line tool domblkstat/domifstat/dommemstat
And sure libvirt must know about the domain to be able to monitor it.

Daniel

-- 
Daniel Veillard      | libxml Gnome XML XSLT toolkit  http://xmlsoft.org/
daniel at veillard.com  | Rpmfind RPM search engine http://rpmfind.net/
http://veillard.com/ | virtualization library  http://libvirt.org/

On Fri, Oct 01, 2010 at 03:47:23PM +0200, Tomi wrote:
> Hi folks,
> 
> is it possible to monitor and gather statistics in realtime (CPU,
> memory, HDD, network, ... - something like dstat) of guest systems
> with libvirt through console from host system (KVM based)? If yes, do
> those guests need to be created through libvirt? Thanks for your help
> and time.
If you have a large number of servers to monitor, you might want to look at the
Host sFlow agent:
http://host-sflow.sourceforge.net/

The Host sFlow agent is installed on the server and locally polls physical
server statistics and VM statistics using libvirt. The statistics are exported
using the sFlow protocol.
http://www.sflow.org/

If you want detailed network visibility then the Open vSwitch includes sFlow
monitoring of inter-VM traffic:
http://openvswitch.org/

For more information, see:
http://blog.sflow.com/2010/10/kvm.html
http://blog.sflow.com/2010/10/sflowtrend-adds-server-performance.html

Peter

On Fri, Oct 01, 2010 at 03:47:23PM +0200, Tomi wrote:
> Hi folks,
> is it possible to monitor and gather statistics in realtime (CPU,
> memory, HDD, network, ... - something like dstat) of guest systems
> with libvirt through console from host system (KVM based)? If yes, do
> those guests need to be created through libvirt? Thanks for your help
> and time.
If you have a large number of servers to monitor, you might want to look at  
the Host sFlow agent:
http://host-sflow.sourceforge.net/

The Host sFlow agent is installed on the server and locally polls physical  
server statistics and VM statistics using libvirt. The statistics are  
exported using the sFlow protocol.
http://www.sflow.org/

If you want detailed network visibility then the Open vSwitch includes  
sFlow monitoring of inter-VM traffic:
http://openvswitch.org/

For more information, see:
http://blog.sflow.com/2010/10/kvm.html
http://blog.sflow.com/2010/10/sflowtrend-adds-server-performance.html

Peter
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://listman.redhat.com/archives/libvirt-users/attachments/20101015/e377de4a/attachment.htm>