9e8e987e6c
This service plugin synchronizes ML2 mechanism driver agents' resource information to Placement. To use this service an agent must add 'resource_provider_bandwidths' to the 'configurations' field of its RPC heartbeat. It also may add 'resource_provider_inventory_defaults' to fine tune Placement inventory parameters. Again to use this service a mechanism driver must implement get_standrd_device_mappings() and allocate a UUID as mechanism driver property 'resource_provider_uuid5_namespace'. The synchronization is triggered by: * any new agent object in the DB * restart of an agent (via 'start_flag' in the RPC heartbeat) * if an agent's 'resources_synced' attribute is not True (None/False) The latter should autoheal transient errors of the synchronization process. That is if a sync attemp fails then we store resources_synced=False which triggers a sync retry at each new heartbeat message until a sync attempt finally succeeds and we can set resources_synced=True. Since this code functionally depends on ML2 we can also consider making it part of ML2, but at the moment it is a service plugin for better decoupling. Even if you load the service plugin the logic gracefully degrades for heartbeat messages not containing resource provider info. If needed the sync can be forced in multiple ways. First, if you restart an agent then the RPs belonging to that agent will be re-synced. You may also delete the agent by 'openstack network agent delete' and let the next heartbeat message re-create the agent object. On re-creation the RPs belonging to that agent will be re-synced. On the other hand a neutron-server restart does not trigger a re-sync in any way. Depending on the trade-off between the admin's needs to force re-syncs and the performance of (not absolutely necessary) Placement updates re-sync conditions may be further fine tuned. Example config for neutron-server: neutron.conf: [DEFAULT] service_plugins = placement Change-Id: Ia1ff6f7559ab77913ddb9c3b134420a401b8eb43 Co-Authored-By: Lajos Katona <lajos.katona@ericsson.com> Depends-On: https://review.openstack.org/586567 Partial-Bug: #1578989 See-Also: https://review.openstack.org/502306 (nova spec) See-Also: https://review.openstack.org/508149 (neutron spec) |
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| bin | ||
| devstack | ||
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| etc | ||
| neutron | ||
| playbooks/legacy | ||
| rally-jobs | ||
| releasenotes | ||
| tools | ||
| .coveragerc | ||
| .gitignore | ||
| .gitreview | ||
| .mailmap | ||
| .pylintrc | ||
| .stestr.conf | ||
| .zuul.yaml | ||
| CONTRIBUTING.rst | ||
| HACKING.rst | ||
| LICENSE | ||
| README.rst | ||
| TESTING.rst | ||
| babel.cfg | ||
| bindep.txt | ||
| lower-constraints.txt | ||
| requirements.txt | ||
| setup.cfg | ||
| setup.py | ||
| test-requirements.txt | ||
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README.rst
Team and repository tags
Welcome!
To learn more about neutron:
- Documentation: https://docs.openstack.org
- Features: https://specs.openstack.org/openstack/neutron-specs
- Defects: https://launchpad.net/neutron
- Release notes: https://docs.openstack.org/releasenotes/neutron/index.html
Get in touch via email. Use [Neutron] in your subject.
To learn how to contribute:
CONTRIBUTING.rst