Hi,

To prepare for the next meeting ( thursday 3rd, may 2012 
http://wiki.openstack.org/Meetings/MeteringAgenda ) I cleaned up and 
reorganized the Metering blueprint so that it ( hopefully ) incorporates all 
the information temporarily stored in the etherpad ( 
http://etherpad.openstack.org/EfficientMetering revision 67 in case it is 
vandalized ).

We could start a discussion from the content of the following sections:

http://wiki.openstack.org/EfficientMetering#Counters
http://wiki.openstack.org/EfficientMetering#Storage

and come up with a list of the counters that should exist by default and how 
they should be stored.

This morning we had a discussion with Zhongyue Luo on 
irc.freenode.net#openstack-metering about how Dough could use the metering 
service. Since it already knows about instance creations, counter c1 that 
records how long a given instance was up is of no interest. However, other 
counters such as the external bandwidth used would be useful. I advocated that 
one of the advantages for Dough to rely on metering to collect counters is that 
it does not need to know about each OpenStack component and can rely on 
metering to figure out how to extract such counters from nova-compute, 
nova-network soon to be quantum, nova-volume soon to be cinder, swift, glance 
and free it from the burden of tracking structural changes.

Cheers

-- 
Loïc Dachary         Chief Research Officer
// eNovance labs   http://labs.enovance.com
// ✉ l...@enovance.com  ☎ +33 1 49 70 99 82


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