Xen users - Mar 2009 - Monitoring XEN hardware resources utilization.

Hello.

How do people here used to monitor their XEN server resources ? (I mean 
not Dom0 or DomU resources which I have no problem monitoring via SNMP, 
but the physical resources of the hardware: CPU, Disk and Network 
utilization etc.)

I have an rrd graphing system (similar to cacti) and I need to get the 
following data:
Total % of CPU, Disk and Network utilization (hardware wise)
I will then feed this data to the rrd system.

I tried the following tools (xm top, xenmon, virt-top) all of them are 
not informative and no flexible enough to use with scripts.
Also if I''m thinking about writing my own daemon Python or PERL. Where 
can I read the info I need, xend ? /sys ?

Thanks in advance for taking time to answer.

Lior.

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Hi Lior,

Am Dienstag, den 31.03.2009, 17:08 +0400 schrieb Lior
Goikhburg:
> Hello.
> 
> How do people here used to monitor their XEN server resources ? (I mean 
> not Dom0 or DomU resources which I have no problem monitoring via SNMP, 
> but the physical resources of the hardware: CPU, Disk and Network 
> utilization etc.)
> 
> I have an rrd graphing system (similar to cacti) and I need to get the 
> following data:
> Total % of CPU, Disk and Network utilization (hardware wise)
> I will then feed this data to the rrd system.
I''ve written a Nagios-Plugin for XEN, which throws CPU, IO, Traffic,
Uptime etc to be continued, which satisfys my need.

Should be no Problem to adopt this for rrd-graphing.


Interested? Could PM this to you :-)
> 
> I tried the following tools (xm top, xenmon, virt-top) all of them are 
> not informative and no flexible enough to use with scripts.
hmpf? i used xm top....

TIME=`sudo xm list | grep $DOM | awk ''{ print $6/60 }''`
CPU=`sudo xentop -b -i 1 | grep $DOM | awk ''{print $4 }''`
VCPU=`sudo xm list | grep $DOM | awk ''{print $4}''`
VBD=`sudo xentop -b -i 1 | grep $DOM | awk ''{print $13}''`
MEM=`sudo xm list | grep $DOM | awk ''{print $3}''`
TRAFF_IN=`sudo xentop -b -i 1 | grep $DOM | awk ''{printf
"%.2f",
 $11/1024}''`
TRAFF_OUT=`sudo xentop -b -i 1 | grep $DOM | awk ''{printf
"%.2f"
, $12/1024}''`
TRAFF=`sudo xentop -b -i 1 | grep $DOM | awk ''{ printf
"%.2f", (
$11+$12)/1024 }''`

and so on....
> Also if I''m thinking about writing my own daemon Python or PERL.
Where
> can I read the info I need, xend ? /sys ?
puuh - no Idea - maybe /proc?
> 
> Thanks in advance for taking time to answer.
> 
> Lior.

hth,

Thomas


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Hello,

Would you please send me the Nagios plugin that you implemented in order to
monitor physical resources?

Thank you,
Afef

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