7c25caa418
Based on both etherpad [1] and cycle highlights [2] [1] https://etherpad.openstack.org/p/nova-train-prelude [2] https://releases.openstack.org/train/highlights.html#nova-compute-service Depends-On: https://review.opendev.org/683485/ Depends-On: https://review.opendev.org/680300/ Change-Id: I078b8428f54ed2a8e5d55592964699933936c709
75 lines
3.9 KiB
YAML
75 lines
3.9 KiB
YAML
---
|
|
prelude: |
|
|
The 20.0.0 release includes many new features and bug fixes. Please be
|
|
sure to read the upgrade section which describes the required actions to
|
|
upgrade your cloud from 19.0.0 (Stein) to 20.0.0 (Train).
|
|
|
|
There are a few major changes worth mentioning. This is not an exhaustive
|
|
list:
|
|
|
|
- The latest Compute API microversion supported for Train is v2.79. Details
|
|
on REST API microversions added since the 19.0.0 Stein release can be
|
|
found in the `REST API Version History`_ page.
|
|
|
|
- Live migration support for servers with a
|
|
`NUMA topology, pinned CPUs <https://docs.openstack.org/nova/latest/admin/cpu-topologies.html>`_
|
|
and/or `huge pages <https://docs.openstack.org/nova/latest/admin/huge-pages.html>`_,
|
|
when using the libvirt compute driver.
|
|
|
|
- Live migration support for servers with
|
|
`SR-IOV ports <https://docs.openstack.org/neutron/latest/admin/config-sriov>`_
|
|
attached when using the libvirt compute driver.
|
|
|
|
- Support for cold migrating and resizing servers with bandwidth-aware
|
|
`Quality of Service ports <https://docs.openstack.org/api-guide/compute/port_with_resource_request.html>`_
|
|
attached.
|
|
|
|
- Improvements to the scheduler for more intelligently filtering
|
|
`results from the Placement service <https://docs.openstack.org/nova/latest/admin/configuration/schedulers.html#prefiltering>`_.
|
|
|
|
- Improved multi-cell resilience with the ability to
|
|
`count quota usage <https://docs.openstack.org/nova/latest/user/quotas.html#quota-usage-from-placement>`_
|
|
using the Placement service and API database.
|
|
|
|
- A new framework supporting hardware-based encryption of guest memory
|
|
to protect users against attackers or rogue administrators snooping on
|
|
their workloads when using the libvirt compute driver. Currently only has
|
|
basic support for
|
|
`AMD SEV (Secure Encrypted Virtualization) <https://docs.openstack.org/nova/latest/admin/configuration/hypervisor-kvm.html#amd-sev-secure-encrypted-virtualization>`_.
|
|
|
|
- Improved `operational tooling <https://docs.openstack.org/nova/latest/cli/nova-manage.html>`_
|
|
for things like archiving the database and healing instance resource
|
|
allocations in Placement.
|
|
|
|
- Improved coordination with the baremetal service during external node
|
|
`power cycles <https://docs.openstack.org/ironic/latest/admin/power-sync.html>`_.
|
|
|
|
- Support for
|
|
`VPMEM (Virtual Persistent Memory) <https://docs.openstack.org/nova/latest/admin/virtual-persistent-memory.html>`_
|
|
when using the libvirt compute driver. This provides data persistence
|
|
across power cycles at a lower cost and with much larger capacities than
|
|
DRAM, especially benefitting HPC and memory databases such as redis,
|
|
rocksdb, oracle, SAP HANA, and Aerospike.
|
|
|
|
- It is now possible to place CPU pinned and unpinned servers on the same
|
|
compute host when using the libvirt compute driver. See the
|
|
`admin guide <https://docs.openstack.org/nova/latest/admin/cpu-topologies.html#configuring-libvirt-compute-nodes-for-cpu-pinning>`_
|
|
for details.
|
|
|
|
- Nova no longer includes Placement code. You must use the extracted
|
|
Placement service. See the `Placement extraction upgrade instructions`_
|
|
for details.
|
|
|
|
- The XenAPI virt driver is now deprecated and may be removed in a future
|
|
release as its quality can not be ensured due to lack of maintainers.
|
|
|
|
- The ``nova-consoleauth`` service has been removed as it was deprecated
|
|
since the 18.0.0 (Rocky) release.
|
|
|
|
- The deprecated ``Cells V1`` feature (not to be confused with `Cells V2`_)
|
|
has been removed.
|
|
|
|
.. _REST API Version History: https://docs.openstack.org/nova/latest/reference/api-microversion-history.html
|
|
.. _Placement extraction upgrade instructions: https://docs.openstack.org/placement/latest/upgrade/to-stein.html
|
|
.. _Cells V2: https://docs.openstack.org/nova/latest/user/cells.html
|