[openstack-dev] [Nova] RFC Host Maintenance
tengqim at linux.vnet.ibm.com
Fri Apr 8 11:37:51 UTC 2016
On Fri, Apr 08, 2016 at 09:52:31AM +0000, Balázs Gibizer wrote:
> > -----Original Message-----
> > From: Qiming Teng [mailto:tengqim at linux.vnet.ibm.com]
> > Sent: April 07, 2016 15:42
> > The only gap based on my limited understanding is that nova is not emitting
> > events compute host state changes. This knowledge is still kept inside nova
> > as some service states. If that info is posted to oslo messaging, a lot of usage
> > scenarios can be enabled and we can avoid too much churns to nova itself.
> Nova does not really know the state of the compute host, it knows only the state of the nova-compute service running on the compute host. In Mitaka we added notification about the service status.
> Also there is a proposal about notification about hypervisor info change .
>  https://review.openstack.org/#/c/299807/
>  http://docs.openstack.org/developer/nova/notifications.html#existing-versioned-notifications
Thanks for the sharing, Balázs. The mitaka service status notification
looks pretty useful, I'll try it.
> > Regards,
> > Qiming
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