[Openstack] ceilometer question: metering number of running instances

Jiri Suchomel jsuchome at suse.cz
Tue Dec 9 11:02:55 UTC 2014

Hi all,

I'm looking for a way of how to meter the number of running instances (per 

Currently, the Sum value in ceilometer statistics command's output is 
confusing, mostly because the high number of notifications generated by nova 
for each instance. As a result, also the graph in Resource Usage view does not 
seem really useful at least for 'instances' meter. 

(See https://bugs.launchpad.net/ceilometer/+bug/1396257 for this problem)

So, what is the correct way? Should I group the statistics output by 
resource_id like

ceilometer statistics -m instance -q 'timestamp>2014-12-03T00' -g resource_id

and just count the number of resources in this output, which should (?) be the 
number of running instances?


Jiri Suchomel

SUSE LINUX, s.r.o.
Lihovarsk√° 1060/12
tel: +420 284 028 960
190 00 Praha 9, Czech Republic                http://www.suse.cz

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