OpenStack Compute (Nova)
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Jay Pipes b5ab9f5ace [placement] split gigantor SQL query, add logging
This patch modifies the code paths for the non-granular request group
allocation candidates processing. It removes the giant multi-join SQL
query and replaces it with multiple calls to
_get_providers_with_resource(), logging the number of matched providers
for each resource class requested and filter (on required traits,
forbidden traits and aggregate memebership).

Here are some examples of the debug output:

- A request for three resources with no aggregate or trait filters:

 found 7 providers with available 5 VCPU
 found 9 providers with available 1024 MEMORY_MB
 found 5 providers after filtering by previous result
 found 8 providers with available 1500 DISK_GB
 found 2 providers after filtering by previous result

- The same request, but with a required trait that nobody has, shorts
  out quickly:

 found 0 providers after applying required traits filter (['HW_CPU_X86_AVX2'])

- A request for one resource with aggregates and forbidden (but no
  required) traits:

 found 2 providers after applying aggregates filter ([['3ed8fb2f-4793-46ee-a55b-fdf42cb392ca']])
 found 1 providers after applying forbidden traits filter ([u'CUSTOM_TWO', u'CUSTOM_THREE'])
 found 3 providers with available 4 VCPU
 found 1 providers after applying initial aggregate and trait filters

Co-authored-by: Eric Fried <efried@us.ibm.com>
Closes-Bug: #1786519
Change-Id: If9ddb8a6d2f03392f3cc11136c4a0b026212b95b
2018-08-27 13:50:22 +00:00
api-guide/source Update api-guide and api-ref to be clear about forced-down 2018-08-17 01:41:31 +00:00
api-ref/source Merge "Making consistent used of GiB and MiB in API ref" 2018-08-22 04:03:01 +00:00
contrib trivial: Remove "vif" script 2017-08-07 16:00:10 +01:00
devstack Skip test_resize_server_revert_with_volume_attached in nova-lvm 2018-07-19 12:22:18 -04:00
doc Merge "Update contributor guide for Stein" 2018-08-23 21:30:49 +00:00
etc/nova Add osprofiler config options to generated reference 2018-06-16 12:46:19 +00:00
gate Add placement perf info gathering hook to end of nova-next 2018-08-14 15:42:08 +01:00
nova [placement] split gigantor SQL query, add logging 2018-08-27 13:50:22 +00:00
placement-api-ref Making consistent used of GiB and MiB in API ref 2018-08-16 22:42:00 +00:00
playbooks/legacy Add placement perf info gathering hook to end of nova-next 2018-08-14 15:42:08 +01:00
releasenotes Merge "Correct the release notes related to nova-consoleauth" 2018-08-24 07:57:23 +00:00
tools Make Xen code py3-compatible 2018-08-10 20:04:19 +00:00
.coveragerc Remove nova/openstack/* from .coveragerc 2016-10-12 16:20:49 -04:00
.gitignore Implement granular policy rules for placement 2018-05-17 11:12:16 -04:00
.gitreview Add .gitreview config file for gerrit. 2011-10-24 15:07:19 -04:00
.mailmap Add mailmap entry 2014-05-07 12:14:26 -07:00
.stestr.conf Finish stestr migration 2017-11-24 16:51:12 -05:00
.zuul.yaml Merge "Add tempest-slow job to run the tempest slow tests" 2018-08-08 23:57:20 +00:00
CONTRIBUTING.rst Update links in documents 2018-01-12 17:05:11 +08:00
HACKING.rst Removed unnecessary parantheses in yield statements 2018-03-07 16:44:36 +09:00
LICENSE initial commit 2010-05-27 23:05:26 -07:00
MAINTAINERS Fix broken URLs 2017-09-07 15:42:31 +02:00
README.rst Docs: modernise links 2018-03-24 20:27:11 +08:00
babel.cfg Get rid of distutils.extra. 2012-02-08 19:30:39 -08:00
bindep.txt Merge "Bindep does not catch missing libpcre3-dev on Ubuntu" 2018-02-14 07:31:09 +00:00
lower-constraints.txt Use ThreadPoolExecutor for max_concurrent_live_migrations 2018-07-16 13:57:09 -04:00
requirements.txt Merge "Blacklist greenlet 0.4.14" 2018-07-24 16:06:41 +00:00
setup.cfg Remove ChanceScheduler 2018-08-20 15:56:13 +01:00
setup.py Updated from global requirements 2017-03-02 11:50:48 +00:00
test-requirements.txt Cleanup ugly stub in TestLocalDeleteAllocations 2018-05-16 09:23:55 -04:00
tox.ini Remove blacklisted py3 xen tests 2018-08-14 16:34:19 +00:00

README.rst

Team and repository tags

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OpenStack Nova

OpenStack Nova provides a cloud computing fabric controller, supporting a wide variety of compute technologies, including: libvirt (KVM, Xen, LXC and more), Hyper-V, VMware, XenServer, OpenStack Ironic and PowerVM.

Use the following resources to learn more.

API

To learn how to use Nova's API, consult the documentation available online at:

For more information on OpenStack APIs, SDKs and CLIs in general, refer to:

Operators

To learn how to deploy and configure OpenStack Nova, consult the documentation available online at:

In the unfortunate event that bugs are discovered, they should be reported to the appropriate bug tracker. If you obtained the software from a 3rd party operating system vendor, it is often wise to use their own bug tracker for reporting problems. In all other cases use the master OpenStack bug tracker, available at:

Developers

For information on how to contribute to Nova, please see the contents of the CONTRIBUTING.rst.

Any new code must follow the development guidelines detailed in the HACKING.rst file, and pass all unit tests.

Further developer focused documentation is available at:

Other Information

During each Summit and Project Team Gathering, we agree on what the whole community wants to focus on for the upcoming release. The plans for nova can be found at: