Please get more detail from https://wiki.openstack.org/wiki/SystemUsageData
Thanks, Jay 2013/10/19 Gabriel Hurley <[email protected]> > The answer is “sort of”. Most projects (including Nova) publish to an > RPC “notifications” channel (e.g. in rabbitMQ or whichever you use in your > deployment). This is how Ceilometer gets some of its data.**** > > ** ** > > There is common code for connecting to the notification queue in Oslo (the > “rpc” and “notifier” modules, particularly), but the exercise of actually > setting up your consumer is left up to you, and there are various gotchas > that aren’t well-documented. Ceilometer’s code is a reasonable starting > point for building your own.**** > > ** ** > > As this is an area I’ve been experimenting with lately I’ll say that once > you get it all working it is certainly functional and will deliver exactly > what you’re asking for, but it can be a fair bit of engineering effort if > you’re not familiar with how these things work already.**** > > ** ** > > This is an area I hope can be improved in OpenStack in future releases.*** > * > > ** ** > > Hope that helps,**** > > ** ** > > **- **Gabriel**** > > ** ** > > *From:* openstack learner [mailto:[email protected]] > *Sent:* Friday, October 18, 2013 11:57 AM > *To:* [email protected]; [email protected] > *Subject:* [openstack-dev] Does openstack have a notification system that > will let us know when a server changes state ?**** > > ** ** > > Hi all, > > > I am using the openstack python api. After I boot an instance, I will keep > polling the instance status to check if its status changes from BUILD to > ACTIVE. > > My question is: > > does openstack have a notification system that will let us know when a vm > changes state (e.g. goes into ACTIVE state)? then we won't have to keep on > polling it when we need to know the change of the machine state.**** > > Thanks**** > > xin**** > > ** ** > > _______________________________________________ > Mailing list: > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : [email protected] > Unsubscribe : > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > >
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