59 lines
3.0 KiB
YAML
59 lines
3.0 KiB
YAML
---
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prelude: |
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The 18.0.0 release includes many new features and bug fixes. It is
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difficult to cover all the changes that have been introduced. Please at
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least read the upgrade section which describes the required actions to
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upgrade your cloud from 17.0.0 (Queens) to 18.0.0 (Rocky).
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That said, a few major changes are worth mentioning. This is not an
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exhaustive list:
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- The latest Compute API microversion supported for Rocky is v2.65. Details
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on REST API microversions added since the 17.0.0 Queens release can be
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found in the `REST API Version History`_ page.
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- Nova is now using the new Neutron port binding API to minimize network
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downtime during live migrations. See the `related spec`_ for more
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details.
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- Volume-backed instances will no longer report ``root_gb`` usage for new
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instances and existing instances will heal during move operations.
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- Several REST APIs specific to nova-network were removed and the core
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functionality of nova-network is planned to be removed in the 19.0.0
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Stein release.
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- A ``nova-manage db purge`` command to `purge archived shadow table data`_
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is now available. A new ``--purge`` option is also available for the
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``nova-manage db archive_deleted_rows`` command.
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- It is now possible to `disable a cell`_ to stop scheduling to a cell by
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using the ``nova-manage cell_v2 update_cell`` command.
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- The libvirt compute driver now supports trusted image certificates when
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using the 2.63 compute API microversion. See the `image signature
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certificate validation`_ documentation for more details.
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- It is now possible to configure a separate database for the placement
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service, which could help in easing the eventual placement service
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extraction from Nova and data migration associated with it.
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- A ``nova-manage placement heal_allocations`` command is now available to
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allow users of the CachingScheduler to get the placement service
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populated for their eventual migration to the FilterScheduler. The
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CachingScheduler is deprecated and could be removed as early as Stein.
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- The placement service now supports granular RBAC policy rules
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configuration. See the `placement policy`_ documentation for details.
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- A new zVM virt driver is now available.
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- The nova-consoleauth service has been deprecated.
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.. _REST API Version History: https://docs.openstack.org/nova/latest/reference/api-microversion-history.html
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.. _related spec: https://specs.openstack.org/openstack/nova-specs/specs/rocky/approved/neutron-new-port-binding-api.html
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.. _purge archived shadow table data: https://docs.openstack.org/nova/latest/cli/nova-manage.html#nova-database
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.. _disable a cell: https://docs.openstack.org/nova/latest/cli/nova-manage.html#nova-cells-v2
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.. _image signature certificate validation: https://docs.openstack.org/nova/latest/user/certificate-validation.html
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.. _placement policy: https://docs.openstack.org/nova/latest/configuration/placement-policy.html
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