Re: [ovirt-users] Real time network usages and IO usages of VM

[Doron Fediuck]

- Original Message -
> From: "Ernest Beinrohr" 
> To: "Shanil S" , users@ovirt.org
> Sent: Tuesday, September 2, 2014 11:24:13 AM
> Subject: Re: [ovirt-users] Real time network usages and IO usages of VM
> 
> Dňa 29.08.2014 07:08, Shanil S wrote / napísal(a):
> 
> 
> 
> Hi All,
> 
> Is there any api methods to get the real time network usages and IO usages os
> of each vm ? I tried it by using api/vms/$id/statistics but its not getting
> the network and IO usages. Is it possible to get these details using the api
> calls ?
> 
> I had to make my own based on the hosts cgroups info. I feed the data to mrtg
> to plot cpu and IO graphs. No network though.
> 
> I run something like this on each hypervisor periodically via mrtg:
> 
> vms=`find /cgroup/blkio/libvirt/qemu/ -maxdepth 1 -mindepth 1 -type d -printf
> "%f\n"`
> IGNORED_REGEX="ignore"
> for vm in $vms
> do
> (
> echo -n "$HOST:$vm:"
> egrep -v "$IGNORED_REGEX"
> /cgroup/blkio/libvirt/qemu/$vm/blkio.throttle.io_serviced | grep ^253:.*Read
> | cut -f3 -d " " | paste -sd+ | bc
> echo -n ":"
> egrep -v "$IGNORED_REGEX"
> /cgroup/blkio/libvirt/qemu/$vm/blkio.throttle.io_serviced | grep
> ^253:.*Write | cut -f3 -d " " | paste -sd+ | bc
> echo -n ":"
> egrep -v "$IGNORED_REGEX"
> /cgroup/blkio/libvirt/qemu/$vm/blkio.throttle.io_service_bytes | grep
> ^253:.*Read | cut -f3 -d " " | paste -sd+ | bc
> echo -n ":"
> egrep -v "$IGNORED_REGEX"
> /cgroup/blkio/libvirt/qemu/$vm/blkio.throttle.io_service_bytes | grep
> ^253:.*Write | cut -f3 -d " " | paste -sd+ | bc
> echo -n ":"
> cat /cgroup/cpuacct/libvirt/qemu/$vm/cpuacct.usage
> ) | tr -d '\n'
> echo ""
> done
> 
> --
> Ernest Beinrohr, AXON PRO
> Ing , RHCE , RHCVA , LPIC , VCA ,
> +421-2-62410360 +421-903-482603
> 

Hi Ernest
Did you check vms/{vm:id}/disks/{disk:id}/statistics and 
vms/{vm:id}/nics/{nic:id}/statitics ?

See more info here:
http://www.ovirt.org/REST-Api#Where_can_I_find_network_and_IO_statiscs_for_virtual_machines.3F

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Re: [ovirt-users] Real time network usages and IO usages of VM

[Ernest Beinrohr]

Dn(a 29.08.2014 07:08, Shanil S wrote / napísal(a):

Hi All,

Is there any api methods to get the real time network usages and IO 
usages os of each vm ? I tried it by using api/vms/$id/statistics but 
its not getting the network and IO usages. Is it possible to get these 
details using the api calls ?


I had to make my own based on the hosts cgroups info. I feed the data to 
mrtg to plot cpu and IO graphs. No network though.


I run something like this on each hypervisor periodically via mrtg:

vms=`find /cgroup/blkio/libvirt/qemu/ -maxdepth 1 -mindepth 1 -type d 
-printf "%f\n"`

IGNORED_REGEX="ignore"
for vm in $vms
do
(
echo -n "$HOST:$vm:"
egrep -v "$IGNORED_REGEX" 
/cgroup/blkio/libvirt/qemu/$vm/blkio.throttle.io_serviced | grep 
^253:.*Read | cut -f3 -d " " | paste -sd+ | bc

echo -n ":"
egrep -v "$IGNORED_REGEX" 
/cgroup/blkio/libvirt/qemu/$vm/blkio.throttle.io_serviced | grep 
^253:.*Write | cut -f3 -d " " | paste -sd+ | bc

echo -n ":"
egrep -v "$IGNORED_REGEX" 
/cgroup/blkio/libvirt/qemu/$vm/blkio.throttle.io_service_bytes | grep 
^253:.*Read | cut -f3 -d " " | paste -sd+ | bc

echo -n ":"
egrep -v "$IGNORED_REGEX" 
/cgroup/blkio/libvirt/qemu/$vm/blkio.throttle.io_service_bytes | grep 
^253:.*Write | cut -f3 -d " " | paste -sd+ | bc

echo -n ":"
cat /cgroup/cpuacct/libvirt/qemu/$vm/cpuacct.usage
) | tr -d '\n'
echo ""
done

--
Ernest Beinrohr, AXON PRO
Ing , RHCE 
, RHCVA 
, LPIC 
, VCA ,

+421-2-62410360 +421-903-482603
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Re: [ovirt-users] Real time network usages and IO usages of VM

[Juan Hernandez]

On 08/29/2014 07:08 AM, Shanil S wrote:
> Hi All,
> 
> Is there any api methods to get the real time network usages and IO
> usages os of each vm ? I tried it by using api/vms/$id/statistics but
> its not getting the network and IO usages. Is it possible to get these
> details using the api calls ?
> -- 
> Regards
> Shanil
> 

Did you try with vms/{vm:id}/nics/{nic:id}/statistics? Note that
currently we have the following statistics available there:

  data.current.rx Receive data rate
  data.current.tx Transmit data rate
  errors.total.rx Total transmit errors
  errors.total.tx Total transmit errors

I guess that this isn't what you are looking for, but we don't have
anything else at the moment.

For disk IO you should take a look at
vms/{vm:id}/disks/{disk:id}/statistics. The collection of statistics
available there is the following:

  data.current.read Read data rate
  data.current.write Write data rate
  disk.read.latency Read latency
  disk.write.latency Write latency
  disk.flush.latency Flush latency

Does this cover your needs? If it doesn't I'd suggest that you open a
RFE to request adding additional statistics. Meanwhile you will have to
use other mechanisms to find the statistics that you need.

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[ovirt-users] Real time network usages and IO usages of VM

[Shanil S]

Hi All,

Is there any api methods to get the real time network usages and IO usages
os of each vm ? I tried it by using api/vms/$id/statistics but its not
getting the network and IO usages. Is it possible to get these details
using the api calls ?
-- 
Regards
Shanil
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