028418788b
Depends-On: https://review.openstack.org/642064 Depends-On: https://review.openstack.org/644293 Change-Id: I9ef2a5e597345e3919cbd553178ba5c978f52984
78 lines
4.4 KiB
YAML
78 lines
4.4 KiB
YAML
---
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prelude: |
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The 19.0.0 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 18.0.0 (Rocky) to 19.0.0 (Stein).
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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 Stein is v2.72. Details
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on REST API microversions added since the 18.0.0 Rocky release can be
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found in the `REST API Version History`_ page.
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- It is now possible to run Nova with version 1.0.0 of the recently
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extracted placement service, hosted from its own repository. Note
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that install/upgrade of an extracted placement service is not yet fully
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implemented in all deployment tools. Operators should check with their
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particular deployment tool for support before proceeding. See the
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placement `install`_ and `upgrade`_ documentation for more details.
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In Stein, operators may choose to continue to run with the integrated
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placement service from the Nova repository, but should begin planning a
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migration to the extracted placement service by Train, as the removal of
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the integrated placement code from Nova is planned for the Train release.
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- Users can now specify a volume type when creating servers when using the
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2.67 compute API microversion. See the `block device mapping`_
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documentation for more details.
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- The 2.69 compute API microversion adds handling of server details in the
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presence of down or poor-performing cells in a multi-cell environment for
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the ``GET /servers``, ``GET /servers/detail``,
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``GET /servers/{server_id}``, ``GET /os-services`` REST APIs. See the
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`handling down cells`_ documentation for more details.
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- Users are now able to create servers with Neutron ports that have QoS
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minimum bandwidth rules when using the 2.72 compute API microversion. See
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the `using ports with resource request`_ documentation for more details.
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- Operators can now set overcommit allocation ratios using Nova
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configuration files or the placement API, by making use of the initial
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allocation ratio configuration options. See the `initial allocation
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ratios`_ documentation for more details.
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- Compute capabilities are now exposed as traits in the placement API.
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See the `compute capabilities as traits`_ documentation for more details.
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- The configuration option
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``[compute]resource_provider_association_refresh`` can now be set to zero
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to disable refresh entirely. This should be useful for large-scale
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deployments.
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- The VMwareVCDriver now supports live migration. See the
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`live migration configuration`_ documentation for information on how to
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enable it.
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- Nova now supports nested resource providers in two cases:
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#. QoS-enabled ports will have inventories and allocations created on
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nested resource providers from the start.
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#. Libvirt compute nodes reporting VGPU inventory will have that VGPU
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inventory and corresponding allocations moved to a child resource
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provider on restart of the nova-compute service after upgrading to
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Stein.
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In both cases this means when looking at resource providers, depending on
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the scenario, you can see more than one provider where there was
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initially just a root compute node provider per compute service.
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.. _REST API Version History: https://docs.openstack.org/nova/latest/reference/api-microversion-history.html
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.. _install: https://docs.openstack.org/placement/latest/install/index.html
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.. _upgrade: https://docs.openstack.org/placement/latest/upgrade/to-stein.html
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.. _handling down cells: https://developer.openstack.org/api-guide/compute/down_cells.html
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.. _block device mapping: https://docs.openstack.org/nova/latest/user/block-device-mapping.html
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.. _using ports with resource request: https://developer.openstack.org/api-guide/compute/port_with_resource_request.html
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.. _initial allocation ratios: https://docs.openstack.org/nova/latest/admin/configuration/schedulers.html#allocation-ratios
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.. _compute capabilities as traits: https://docs.openstack.org/nova/latest/admin/configuration/schedulers.html#compute-capabilities-as-traits
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.. _live migration configuration: https://docs.openstack.org/nova/latest/admin/configuring-migrations.html#vmware
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