Hi Luo,
Great spot! This looks to be an error in the documentation, rather than
in Nova. If you can please include the information in this email in a
bug against the documentation, then someone on the docs team can pick it up.
If you want to fix the documentation yourself, you can also do that, by
checking out the appropriate repo and making the change (just as you
would patch code). Help is available on the wiki here:
https://wiki.openstack.org/wiki/Documentation/HowTo
Hope that helps,
Lana
On 16/04/15 16:50, Luo Gangyi wrote:
Hi, guys,
I found a misleading configuration in openstack official documents.
When I follow the guide
(http://docs.openstack.org/trunk/config-reference/content/section_compute-scheduler.html)
to configure nova host aggregates, I got following DEBUG message in
nova-schuduler log:
"
2015-04-16 09:30:47.395 1143 DEBUG
nova.scheduler.filters.compute_capabilities_filter
[req-66f091c4-c26f-482f-b432-cbd0f2456625 None] (node-132.domain.bcec,
node-132.domain.bcec) ram:128519 disk:6240256 io_ops:0 instances:0 fails
instance_type extra_specs requirements host_passes
/usr/lib/python2.6/site-packages/nova/scheduler/filters/compute_capabilities_filter.py:73
2015-04-16 09:30:47.395 1143 INFO nova.filters
[req-66f091c4-c26f-482f-b432-cbd0f2456625 None] Filter
ComputeCapabilitiesFilter returned 0 hosts
"
Then I looked the source code, I found this problem was caused by the
conflict of ComputeCapabilitiesFilter
and AggregateInstanceExtraSpecsFilter if we did not use scope in
extra_specs.
In official guide, it use "$ nova flavor-key /|ssd.large|/set
/|ssd=true|/" which may cause conflict with ComputeCapabilitiesFilter！
In fact, we should use "$ nova flavor-key /|ssd.large|/set
aggregate_instance_extra_specs:/|ssd=true|/" instead.
Hope someone can fix this problem in officical documents to avoid other
people encountering the same problem.
------------------
Luo Gangyi
luogan...@chinamobile.com
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--
Lana Brindley
Technical Writer
Rackspace Cloud Builders Australia
http://lanabrindley.com
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