1ddfda5b11
Shamelessly copied from the cycle highlights. Change-Id: I6fd5ce392ee07700600ccae8916cd4e6b524cbc3
81 lines
4.5 KiB
YAML
81 lines
4.5 KiB
YAML
---
|
|
prelude: |
|
|
The OpenStack 2024.1 (Nova 29.0.0) 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 28.0.0 (2023.2) to 29.0.0
|
|
(2024.1).
|
|
As a reminder, OpenStack 2024.1 is a `Skip-Level-Upgrade Release`__
|
|
(starting from now, we name it a `SLURP release`) meaning that you can
|
|
do rolling-upgrade from 2023.1 and skip 2023.2.
|
|
|
|
.. __: https://governance.openstack.org/tc/resolutions/20220210-release-cadence-adjustment.html
|
|
|
|
There are a few major changes worth mentioning. This is not an exhaustive
|
|
list:
|
|
|
|
- The latest Compute API microversion supported for 2024.1 is `v2.96`__.
|
|
|
|
.. __: https://docs.openstack.org/nova/latest/reference/api-microversion-history.html#maximum-in-2024-1-caracal
|
|
|
|
- The Ironic driver ``[ironic]/peer_list`` configuration option has been
|
|
deprecated. The Ironic driver now more closely models other Nova drivers
|
|
where compute nodes do not move between compute service instances. If
|
|
high availability of a single compute service is required, operators
|
|
should use active/passive failover between 2 compute service agents
|
|
configured to share the same compute service host
|
|
value``[DEFAULT]/host``. Ironic nova-compute services can now be
|
|
configured to target a specific shard of ironic nodes by setting the
|
|
``[ironic]/shard`` configuration option and a new ``nova-manage db
|
|
ironic_compute_node_move`` command can help the operators when upgrading
|
|
their computes to specify which shard they should manage.
|
|
|
|
- Instances using `vGPUs can now be live-migrated
|
|
<https://docs.openstack.org/nova/latest/admin/virtual-gpu.html#caveats>`_
|
|
if both of the compute nodes support libvirt-8.6.0 and QEMU-8.1.0, as the
|
|
source mediated device will migrate the GPU memory to another target
|
|
mediated device automatically. In order to do this,
|
|
``[libvirt/live_migration_downtime`` config option needs to be modified
|
|
according to the aforementioned documentation.
|
|
|
|
- As of the new 2.96 microversion, the ``server show`` and ``server list``
|
|
APIs now return a new parameter called ``pinned_availability_zone`` that
|
|
indicates whether the instance is confined to a specific AZ. This field
|
|
supplements the existing ``availability_zone`` field which reports the
|
|
availability zone of the host where the service resides. The two values
|
|
may be different if the service is shelved or is not pinned to an AZ
|
|
which can help operators plan maintenance and better understand the
|
|
workload constraints.
|
|
|
|
- Instances using virtio-net will see an increase in performance between
|
|
10% and 20% if their image uses a new ``hw_virtio_packed_ring=true``
|
|
property or their flavor contains ``hw:virtio_packed_ring=true`` extra
|
|
spec, provided libvirt version is >= 6.3 and QEMU >= 4.2.
|
|
|
|
- As a security mechanism, a new ``[consoleauth]/enforce_session_timeout``
|
|
configuration option provides the ability to automatically close a server
|
|
console session when the token expires. This is disabled by default to
|
|
preserve the existing behaviour for upgrades.
|
|
|
|
- The libvirt driver now supports requesting a configurable memory address
|
|
space for the instances. This allows `instances with large RAM
|
|
requirements
|
|
<https://specs.openstack.org/openstack/nova-specs/specs/2024.1/implemented/libvirt-maxphysaddr-support.html#flavor-extra-specs>`_
|
|
to be created by specifying either ``hw:maxphysaddr_mode=emulate`` and
|
|
``hw:maxphysaddr_bits`` flavor extra specs or ``hw_maxphysaddr_mode``
|
|
and ``hw_maxphysaddr_bits``image properties. The
|
|
``ImagePropertiesFilter`` and ``ComputeCapabilitiesFilter`` filters are
|
|
required to support this functionality.
|
|
|
|
- The Hyper-V virt driver has been removed. It was deprecated in the Nova
|
|
27.2.0 (Antelope) release. This driver was untested and has no
|
|
maintainers. In addition, it had a dependency on the OpenStack Winstacker
|
|
project that also has been retired.
|
|
|
|
- A couple of other improvements target reducing the number of bugs we
|
|
have: one automatically detecting the maximum number of instances with
|
|
memory encryption which can run concurrently, another one allows
|
|
specifying a specific IP address or hostname for incoming move operations
|
|
(by setting ``[libvirt]/migration_inbound_addr``) and yet another one
|
|
that improves stability of block device management using libvirt device
|
|
aliases.
|