On 06/14/2017 10:31 AM, Matt Riedemann wrote:
On 6/14/2017 10:57 AM, Carlos Konstanski wrote:
Is there a way to obtain nova configuration settings at runtime without
resorting to SSHing onto the compute host and greping nova.conf? For
instance a CLI call? At the moment I'm looking at cpu_allocation_ratio
and ram_allocation_ratio. There may be more along this vein.
Alles Gute,
Carlos Konstanski
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No there isn't.
For the specific case you're looking for though, you could use the Placement
REST API:
http://docs-draft.openstack.org/32/470932/5/check/gate-placement-api-ref-nv/771f604//placement-api-ref/build/html/?expanded=show-resource-provider-detail,show-resource-provider-inventory-detail
Using ^ you could get the VCPU resource class inventory allocation ratio for a
given resource provider, where an example of a resource provider is a compute
node.
For a compute node resource provider, the uuid is the same as the
compute_nodes.uuid field and the name is the compute_nodes.hypervisor_hostname
field.
There's a small complication here...if AggregateRamFilter/AggregateCoreFilter
scheduler filters are enabled the cpu_allocation_ratio and ram_allocation_ratio
set in nova.conf on the compute nodes can be overwridden by ratios set in the
aggregates.
Chris
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