68 lines
2.9 KiB
YAML
68 lines
2.9 KiB
YAML
---
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prelude: |
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The 21.0.0 release includes many new features and bug fixes. Please be
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sure to read the upgrade section which describes the required actions to
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upgrade your cloud from 20.0.0 (Train) to 21.0.0 (Ussuri).
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There are a few major changes worth mentioning. This is not an exhaustive
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list:
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- The latest Compute API microversion supported for Ussuri is v2.87.
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Details on REST API microversions added since the 20.0.0 Train release
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can be found in the `REST API Version History`__ page.
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.. __: https://docs.openstack.org/nova/latest/reference/api-microversion-history.html
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- `Image pre-caching support to compute hosts`__ using ``os-aggregates``
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API information, allowing some distributed edge cases and preemptive
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image caching for instance creation.
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.. __: https://docs.openstack.org/nova/latest/reference/api-microversion-history.html#id74
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- Support for `cold migrating and resizing servers between Nova cells`__.
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.. __: https://docs.openstack.org/nova/latest/admin/configuration/cross-cell-resize.html
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- Added support for `evacuate, live migrate and unshelve servers with
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minimum bandwidth guarantees`__.
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.. __: https://docs.openstack.org/api-guide/compute/port_with_resource_request.html
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- New ``nova-manage placement audit`` CLI command to `find and clean up
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orphaned resource allocations`__.
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.. __: https://docs.openstack.org/nova/latest/cli/nova-manage.html
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- Support for scope types and additional roles in the default nova
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policies, allowing for richer access management including the ability to
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configure *read-only* access to resources. This feature is disabled by
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default. See the `Policy Concepts`__ documentation for more details.
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.. __: https://docs.openstack.org/nova/latest/configuration/policy-concepts.html
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- Support for `creating servers with accelerator devices via Cyborg`__.
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.. __: https://docs.openstack.org/api-guide/compute/accelerator-support.html
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- Enabled `rescue for boot-from-volume instances`__. Rescue now also allows
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to attach stable disk devices to the rescued instance.
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.. __: https://docs.openstack.org/nova/latest/user/rescue.html
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- Validation for `known flavor extra specs with recognized namespaces`__.
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.. __: https://docs.openstack.org/nova/latest/reference/api-microversion-history.html#id79
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- Support for `heterogenous virtual GPU types per compute node`__.
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.. __: https://docs.openstack.org/nova/latest/admin/virtual-gpu.html#enable-gpu-types-compute
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- Python 2 is no longer supported by Nova, Python 3.6 and 3.7 are.
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- Removal of the ``os-consoles`` and ``os-networks`` REST APIs. See the
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`Upgrade Notes`_ section for more details.
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- Removal of the ``nova-dhcpbridge``, ``nova-console`` and
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``nova-xvpvncproxy`` services. See the `Upgrade Notes`_ section for more
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details.
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