On 9/16/15 4:03 PM, Clint Byrum wrote:
Excerpts from Andrew Bogott's message of 2015-09-16 10:03:48 -0700:
My users are mostly happy with VMs, but I get occasional requests for
physical hardware in order to host databases, run performance tests,
etc. I'd love to rack a dozen small servers and graft the ironic
service onto my existing cloud in order to fulfill these sporadic
needs. I'm given pause, though, by this doc section:
http://docs.openstack.org/developer/ironic/deploy/install-guide.html#configure-compute-to-use-the-bare-metal-service
For example, this:
compute_driver=nova.virt.ironic.IronicDriver
That would have me changing nova settings in such a way that would
clearly make nova /only/ support bare-metal, disabling its
virtualization facilities. Does that mean that bare metal is really an
either/or proposition, or is there some way to make bare metal and virt
services coexist on a single nova installation? Or is there an
in-between option that involves installing a second nova stack on
different nodes with a different config?
-- Bonus Question --
I'm still using nova-network. Is anyone using ironic without neutron?
Or, if not, is that at least theoretically possible?
Yes, you need to use host aggregates. You would put the ironic compute
hosts into an aggregate, and all of the other compute hosts into another,
and then have the extra_specs in the flavor set to whichever aggregate
you want the instance to go to.
<long pause>
OK -- If I understand what you're saying, I would have a separate node
running nova-compute that uses the ironic driver, and use host
aggregates to direct bare-metal allocations to that node. Is that
correct? That would have me running most of my compute services
(scheduler, conductor, api, compute) with my existing, kvm-oriented
config, and then having one single outlier compute service running with
a different ironic-oriented config. That seems to directly contradict
this line right up top in the docs:
" /This configuration file must be modified on the Compute service’s
controller nodes and compute nodes."[1]
/Is that sentence simply mistaken? Or am I misunderstanding what you
mean about host aggregates?
-Andrew
/
/
[1]
http://docs.openstack.org/developer/ironic/deploy/install-guide.html#configure-compute-to-use-the-bare-metal-service
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