Add a prelude section for Newton
Given Nova now uses reno files for providing release notes, that means we have a lot of those, which could confuse people looking at those because it's huge. Now that we're past RC2, it's time for us to write a summary about the main important things we want to raise. PTL, your dog. Change-Id: I46565fa17b4743e8f5eb8d6fd48b47515a78f47e
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releasenotes/notes/newton_prelude-6a6566c8753d147c.yaml
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releasenotes/notes/newton_prelude-6a6566c8753d147c.yaml
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---
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prelude: >
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Nova 14.0.0 release is including a lot of new features and bugfixes. It can
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be extremely hard to mention all the changes we introduced during that
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release but we beg you to read at least the upgrade section which describes
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the required modifications that you need to do for upgrading your cloud
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from 13.0.0 (Mitaka) to 14.0.0 (Newton).
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That said, a few major changes are worth to notice here. This is not an
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exhaustive list of things to notice, rather just important things you need
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to know :
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- Latest API microversion supported for Newton is v2.38
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- Nova now provides a new placement RESTful API endpoint that is for
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the moment optional where Nova compute nodes use it for providing
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resources. For the moment, the nova-scheduler is not using it but we
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plan to check the placement resources for Ocata. In case you plan to
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rolling-upgrade the compute nodes between Newton and Ocata, please
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look in the notes below how to use the new placement API.
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- Cells V2 now supports booting instances for one cell v2 only. We plan
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to add a multi-cell support for Ocata. You can prepare for Ocata now
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by creating a cellv2 now using the nova-manage related commands, but
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configuring Cells V2 is still fully optional for this cycle.
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- Nova is now using Glance v2 API for getting image resources.
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- API microversions 2.36 and above now deprecate the REST resources in
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Nova used to proxy calls to other service type APIs (eg. /os-volumes).
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We'll still supporting those until we raise our minimum API version
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to 2.36 which is not planned yet (we're supporting v2.1 as of now) but
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you're encouraged to stop using those resources and rather calling the
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other services that provide those natively.
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