OpenStack Compute (Nova)
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Russell Bryant a7e2a4114a Allow compute manager to accept 3.0 messages
We are currently trying to support live upgrades from havana to
icehouse.  This change is required to make that happen.  In a live
upgrade situation, you have icehouse nova infrastructure, with a mix of
havana and icehouse compute nodes as you roll through and upgrade them.
While in this situation, the havana compute nodes must be able to accept
3.0 messages.

Accepting 3.0 messages is trivial to do and extremely low risk.  It does
not change the behavior of a havana-only deployment at all.  The only
additions is some pass-through code to the current compute manager.
This code will only get hit during a live upgrade situation.

Note that there is one other change needed to complete this.  With only
this patch, live upgrades are supported, but any operations that require
compute nodes to talk to each other will not work.  This includes
resizes and migrates.  That would be unfortunate, since live migrations
are something that people *definitely* want to be able to do during an
upgrade procedure.

The additional changes needed to allow resizes and migrates during live
upgrades are included in another patch.

Partial-bug: #1258253
Change-Id: Ia801609b6b3fe88e0d0b16f4c0d37bf25dbfa842
2013-12-05 15:36:36 -05:00
contrib Enable N302: Import modules only 2013-01-25 12:11:54 -05:00
doc Merge "Add V3 API samples for security-groups" 2013-09-26 18:04:07 +00:00
etc/nova Baremetal: Be more patient with IPMI and BMC 2013-10-10 10:20:11 -04:00
nova Allow compute manager to accept 3.0 messages 2013-12-05 15:36:36 -05:00
plugins/xenserver XenAPI: Add versioning for plugins 2013-10-10 10:20:53 -04:00
smoketests Fix and Gate on H303 (no wildcard imports) 2013-07-30 14:34:31 -07:00
tools Merge "Update sample config generator script" 2013-09-26 10:09:49 +00:00
.coveragerc Port Cheetah templates to Jinja2 2013-09-02 16:03:34 +02:00
.gitignore add .idea folder to .gitignore pycharm creates this folder 2013-03-07 17:00:22 -06:00
.gitreview Open stable/havana 2013-10-17 16:15:09 -04:00
.mailmap Merge "update .mailmap" 2013-09-17 02:57:26 +00:00
.testr.conf Make testr preserve existing OS_* env vars values 2013-05-29 11:55:49 +03:00
babel.cfg Get rid of distutils.extra. 2012-02-08 19:30:39 -08:00
CONTRIBUTING.rst Add a CONTRIBUTING file. 2012-11-21 17:04:48 -05:00
HACKING.rst Use timeutils.utcnow() throughout the code 2013-07-19 16:08:54 +03:00
LICENSE initial commit 2010-05-27 23:05:26 -07:00
MANIFEST.in Finish AUTHORS transition. 2012-07-05 09:11:37 -05:00
openstack-common.conf Revert "Importing correlation_id middleware from oslo-incubator" 2013-09-03 14:13:44 -07:00
pylintrc Don't warn about C0111 (No docstrings) 2011-03-16 15:28:09 -07:00
README.rst Update references with new Mailing List location 2013-07-28 11:28:46 -07:00
requirements.txt Require python-cinderclient >= 1.0.6 2013-11-11 15:21:38 +00:00
run_tests.sh Merge "emit warning while running flake8 without virtual env" 2013-09-02 07:36:38 +00:00
setup.cfg Open stable/havana 2013-10-17 16:15:09 -04:00
setup.py Updated from global requirements 2013-09-05 11:12:57 -04:00
test-requirements.txt Updated from global requirements 2013-09-05 11:12:57 -04:00
tox.ini xenapi: fix pep8 violations in nova plugins 2013-09-17 16:44:59 +00:00

OpenStack Nova README

OpenStack Nova provides a cloud computing fabric controller, supporting a wide variety of virtualization technologies, including KVM, Xen, LXC, VMware, and more. In addition to its native API, it includes compatibility with the commonly encountered Amazon EC2 and S3 APIs.

OpenStack Nova is distributed under the terms of the Apache License, Version 2.0. The full terms and conditions of this license are detailed in the LICENSE file.

Nova primarily consists of a set of Python daemons, though it requires and integrates with a number of native system components for databases, messaging and virtualization capabilities.

To keep updated with new developments in the OpenStack project follow @openstack on Twitter.

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

http://docs.openstack.org

For information about the different compute (hypervisor) drivers supported by Nova, read this page on the wiki:

https://wiki.openstack.org/wiki/HypervisorSupportMatrix

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:

http://bugs.launchpad.net/nova

Developers wishing to work on the OpenStack Nova project should always base their work on the latest Nova code, available from the master GIT repository at:

http://github.com/openstack/nova

Developers should also join the discussion on the mailing list, at:

http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack

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:

http://nova.openstack.org/

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

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