openstack-ansible-os_nova/releasenotes/notes/nova_ram_weight_multiplier_deprecation-1b152707b4737b3c.yaml
Damian Dabrowski 7000bc3f3f Deprecate nova_ram_weight_multiplier
Long time ago a variable `nova_ram_weight_multiplier` was implemented
and its default value was set to 5.0.
There are 2 issues with this:
1. Default value in nova is 1.0 [1] so our value is much bigger than
nova's default without having a strong reason for that.
2. OSA does not provide similar variables for other multipliers like
`cpu_weight_multiplier`.

Because there are a couple of different multipliers and more of them
can be implemented in the future(for ex.
`hypervisor_version_weight_multiplier` was implemented in 2023.2) it
would be hard for the OSA project to maintain variables for all of them.
It is better to deprecate `nova_ram_weight_multiplier` and let users
define multipliers with `nova_nova_conf_overrides` if necessary.

[1] https://docs.openstack.org/nova/2023.1/configuration/config.html#filter_scheduler.ram_weight_multiplier

Change-Id: I4f82840e94312d38696e3ddd05ef494821233f4d
2023-07-11 21:35:41 +02:00

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YAML

---
deprecations:
- |
``nova_ram_weight_multiplier`` was deprecated. Multipliers should be
defined using ``nova_nova_conf_overrides``.
Please note that default value for ``nova_ram_weight_multiplier`` was
previously set to 5, while nova default is 1. This deprecation will
slightly change weighing behavior in OSA.