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[Metering] schema and counter definitions



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:


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.


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

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