6:26 p.m.
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
9:25 a.m.
New subject: [libvirt-users] Monitoring and statistics through libvirt
On 10/16/2010 10:26 AM, peter.phaal(a)gmail.com wrote:
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/
Useful looking project. Just added a link to it from the libvirt.org
wiki:
http://wiki.libvirt.org/page/Main_Page#Networking
Hope that helps. :)
Regards and best wishes,
Justin Clift
2:47 p.m.
New subject: [libvirt-users] Monitoring and statistics through libvirt
Justin,
Thank you for the listing.
For anyone interested in the format of the data exported by the Host sFlow
agent, the following document describes how the libvirt metrics are encoded:
http://www.sflow.org/sflow_host.txt
The sFlow protocol is very simple, the existing libvirt structures are
basically serialized using XDR and sent as UDP datagrams. Apart from the
increased scalability of pushing rather than pulling performance counters;
the sFlow standard links network, server (both physical and virtual) and
application performance statistics together within a single multi-vendor
standard:
http://blog.sflow.com/2010/08/sflow-host-structures.html
Peter
On Wed, Oct 20, 2010 at 7:25 AM, Justin Clift <jclift(a)redhat.com> wrote:
On 10/16/2010 10:26 AM, peter.phaal(a)gmail.com wrote:
> 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/
>
Useful looking project. Just added a link to it from the libvirt.org
wiki:
http://wiki.libvirt.org/page/Main_Page#Networking
Hope that helps. :)
Regards and best wishes,
Justin Clift
5028
days inactive
5033
days old
2 comments
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participants (3)
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Peter Phaal -
peter.phaal＠gmail.com