Thanks Kevin for your clarification, which further affirms my belief that ip address should be included in the host info.
I will contact Jay Pipes on IRC, to see what can I help towards this effort, soon after the New Year's Day in China. :) 2014-12-31 0:34 GMT+08:00 Kevin L. Mitchell <kevin.mitch...@rackspace.com>: > On Tue, 2014-12-30 at 14:52 +0800, Lingxian Kong wrote: >> Just as what Jay Lau said, 'nova hypervisor-show <hypervisor_id>' >> indeed returns host ip address, and there are more other information >> included than 'nova host-describe <hostname>'. I feel a little >> confused about the 'host' and 'hypervisor', what's the difference >> between them? For cloud operator, maybe 'host' is more usefull and >> intuitive for management than 'hypervisor'. From the implementation >> perspective, both 'compute_nodes' and 'services' database tables are >> used for them. Should them be combined for more common use cases? > > Well, the host and the hypervisor are conceptually distinct objects. > The hypervisor is, obviously, the thing on which all the VMs run. The > host, though, is the node running the corresponding nova-compute > service, which may be separate from the hypervisor. For instance, on > Xen-based setups, the host runs in a VM on the hypervisor. There has > also been discussion of allowing one host to be responsible for multiple > hypervisors, which would be useful for providers with large numbers of > hypervisors. > -- > Kevin L. Mitchell <kevin.mitch...@rackspace.com> > Rackspace > > > _______________________________________________ > OpenStack-dev mailing list > OpenStack-dev@lists.openstack.org > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev -- Regards! ----------------------------------- Lingxian Kong _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev