OpenStack Compute (Nova)
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Andrey Volkov 8e19ef4173 Check hosts have no instances for AZ rename
Update aggregate and update aggregate metadata API calls have the
ability to update availability zone name for the aggregate. If the
aggregate is not empty (has hosts with instances on it)
the update leads to discrepancy for objects saving availability zone as a
string but not reference.

From devstack DB they are:
- cinder.backups.availability_zone
- cinder.consistencygroups.availability_zone
- cinder.groups.availability_zone
- cinder.services.availability_zone
- cinder.volumes.availability_zone
- neutron.agents.availability_zone
- neutron.networks.availability_zone_hints
- neutron.router_extra_attributes.availability_zone_hints
- nova.dns_domains.availability_zone
- nova.instances.availability_zone
- nova.volume_usage_cache.availability_zone
- nova.shadow_dns_domains.availability_zone
- nova.shadow_instances.availability_zone
- nova.shadow_volume_usage_cache.availability_zone

Why that's bad?
First, API and Horizon show different values for host and instance for
example. Second, migration for instances with changed availability
zone fails with "No valid host found" for old AZ.

This change adds an additional check to aggregate an Update Aggregate API call.
With the check, it's not possible to rename AZ if the corresponding
aggregate has instances in any hosts.

PUT /os-aggregates/{aggregate_id} and
POST /os-aggregates/{aggregate_id}/action return HTTP 400 for
availability zone renaming if the hosts of the aggregate have any instances.
It's similar to conflicting AZ names error already available.

Change-Id: Ic27195e46502067c87ee9c71a811a3ca3f610b73
Closes-Bug: #1378904
2019-03-01 12:25:16 -05:00
api-guide/source API microversion 2.69: Handles Down Cells Documentation 2019-02-20 10:10:50 -08:00
api-ref/source Merge "API microversion 2.69: Handles Down Cells Documentation" 2019-02-21 00:29:01 +00:00
devstack Remove the CachingScheduler 2018-10-18 17:55:36 -04:00
doc Merge "vmware:add support for the hw_video_ram image property" 2019-02-23 00:43:27 +00:00
etc/nova Add osprofiler config options to generated reference 2018-06-16 12:46:19 +00:00
gate Merge "Remove placement perf check" 2018-12-08 04:56:56 +00:00
nova Check hosts have no instances for AZ rename 2019-03-01 12:25:16 -05:00
playbooks/legacy Merge "Change nova-next tempest test regex" 2019-02-15 02:05:43 +00:00
releasenotes Check hosts have no instances for AZ rename 2019-03-01 12:25:16 -05:00
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 Remove Placement API reference 2018-11-28 03:38:41 +00:00
.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 "Fix irrelevant-files for legacy-grenade-dsvm-neutron-multinode-live-migration" 2019-02-23 00:44:01 +00:00
CONTRIBUTING.rst Update links in documents 2018-01-12 17:05:11 +08:00
HACKING.rst Document how to make tests log at DEBUG level 2019-02-13 20:46:01 +00:00
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 Merge "Change sqlalchemy warnings filter to an error" 2019-02-14 21:46:37 +00:00
requirements.txt Merge "Change sqlalchemy warnings filter to an error" 2019-02-14 21:46:37 +00:00
setup.cfg Update mailinglist from dev to discuss 2018-12-05 09:44:35 +08:00
setup.py Updated from global requirements 2017-03-02 11:50:48 +00:00
test-requirements.txt Fix ironic client ironic_url deprecation warning 2018-10-24 17:59:10 +02:00
tox.ini Merge "Fix deps for api-samples tox env" 2019-02-15 02:18:17 +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: