OpenStack Compute (Nova) Client
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Sean Dague f5b19b3738 Use neutron for network name -> id resolution
The 2.36 microversion deprecates the nova proxy APIs for looking up a
network from neutron. The CLI will lookup a network by name for
booting a server as a convenience.

Over 90% of clouds now have neutron. We use a service catalog lookup
to assume that neutron is available, and if not fall back to our
proxy. This should mostly shield people from the 2.36 transition.

To test this we add support in our fake client for the neutron network
lookup. Comments were also left about some cleanups we should do in
other parts of the shell testing for net lookup.

Related to blueprint deprecate-api-proxies

Change-Id: I4f809de4f7efb913c814f132f5b3482731c588c5
2016-08-15 16:56:22 -04:00
doc The novaclient Python API doc keystoneauth example fixed 2016-03-02 14:25:29 +02:00
novaclient Use neutron for network name -> id resolution 2016-08-15 16:56:22 -04:00
releasenotes Use neutron for network name -> id resolution 2016-08-15 16:56:22 -04:00
tools Removed unused Oslo Incubator code 2016-03-22 18:31:21 -04:00
.coveragerc Change ignore-errors to ignore_errors 2015-09-21 14:54:09 +00:00
.gitignore Add reno for release notes management 2015-11-23 21:03:34 +01:00
.gitreview Add .gitreview config file for gerrit. 2011-11-16 09:23:10 -08:00
.mailmap Add mailmap entry 2014-05-07 12:16:41 -07:00
.testr.conf Add OS_TEST_PATH to testr 2015-01-27 13:09:42 -08:00
babel.cfg Enable i18n with Babel. 2015-09-08 10:10:25 -07:00
CONTRIBUTING.rst Workflow documentation is now in infra-manual 2014-12-05 03:30:40 +00:00
HACKING.rst Clean up a little cruft 2013-09-20 16:02:48 -07:00
LICENSE whitespace cleanups 2011-08-08 13:25:29 -07:00
other-requirements.txt Fix python35 job failures 2016-08-03 12:18:14 +03:00
README.rst Update README to comply with Identity v3 2016-06-16 16:30:23 -03:00
requirements.txt Updated from global requirements 2016-08-01 18:47:30 +00:00
run_tests.sh Deprecate run_test.sh 2016-02-21 06:19:17 +08:00
setup.cfg Update the home-page with developer documentation 2016-05-17 10:13:18 +05:30
setup.py Updated from global requirements 2015-09-17 12:16:56 +00:00
test-requirements.txt Updated from global requirements 2016-08-11 18:18:08 +00:00
tox.ini Make novaclient functional tests use pretty tox 2016-08-12 06:34:21 -04:00

Python bindings to the OpenStack Nova API

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This is a client for the OpenStack Nova API. There's a Python API (the novaclient module), and a command-line script (nova). Each implements 100% of the OpenStack Nova API.

See the OpenStack CLI guide for information on how to use the nova command-line tool. You may also want to look at the OpenStack API documentation.

python-novaclient is licensed under the Apache License like the rest of OpenStack.

Contents:

Command-line API

Installing this package gets you a shell command, nova, that you can use to interact with any OpenStack cloud.

You'll need to provide your OpenStack username and password. You can do this with the --os-username, --os-password and --os-project-name params, but it's easier to just set them as environment variables:

export OS_USERNAME=<username>
export OS_PASSWORD=<password>
export OS_PROJECT_NAME=<project-name>

You will also need to define the authentication url with --os-auth-url and the version of the API with --os-compute-api-version. Or set them as environment variables as well and set the OS_AUTH_URL to the keystone endpoint:

export OS_AUTH_URL=http://<url-to-openstack-keystone>:5000/v3/
export OS_COMPUTE_API_VERSION=2.1

Since Keystone can return multiple regions in the Service Catalog, you can specify the one you want with --os-region-name (or export OS_REGION_NAME). It defaults to the first in the list returned.

You'll find complete documentation on the shell by running nova help

Python API

There's also a complete Python API, with documentation linked below.

To use with keystone as the authentication system:

>>> from keystoneauth1.identity import v3
>>> from keystoneauth1 import session
>>> from novaclient import client
>>> auth = v3.Password(auth_url='http://example.com:5000/v3',
...                    username='username',
...                    password='password',
...                    project_name='project-name',
...                    user_domain_id='default',
...                    project_domain_id='default')
>>> sess = session.Session(auth=auth)
>>> nova = client.Client("2.1", session=sess)
>>> nova.flavors.list()
[...]
>>> nova.servers.list()
[...]
>>> nova.keypairs.list()
[...]

Testing

There are multiple test targets that can be run to validate the code.

  • tox -e pep8 - style guidelines enforcement
  • tox -e py27 - traditional unit testing
  • tox -e functional - live functional testing against an existing openstack

Functional testing assumes the existence of a clouds.yaml file as supported by os-client-config (http://docs.openstack.org/developer/os-client-config) It assumes the existence of a cloud named devstack that behaves like a normal devstack installation with a demo and an admin user/tenant - or clouds named functional_admin and functional_nonadmin.