Update and expand cells config doc warning
With cells v2 in Nova we have had to start going through various docs both within and outside Nova to clarify when something is talking about cells v1 vs cells v2. The cells compute config reference document is all about cells v1. This change updates the wording in the warning and moves it to the top of the page so it's clear from the start that cells v1 is considered experimental and not recommended for new deployments, and is being replaced with cells v2. A link for more information about cells v2 is provided in the warning. Change-Id: I20204efc509237b3c5bacb22abed815a2b1e49ec Closes-Bug: #1683416
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@ -1,6 +1,14 @@
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=====
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Cells
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=====
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==========
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Cells (v1)
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==========
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.. warning::
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Configuring and implementing Cells v1 is not recommended for new deployments
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of the Compute service (nova). Cells v2 replaces cells v1, and v2 is
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required to install or upgrade the Compute service to the 15.0.0 Ocata
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release. More information on cells v2 can be found on the
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`Cells <https://docs.openstack.org/developer/nova/cells.html>`_ page.
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``Cells`` functionality enables you to scale an OpenStack Compute
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cloud in a more distributed fashion without having to use complicated
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@ -27,10 +35,6 @@ new build request reaches its ``nova-cells`` service, it is sent
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over to the host scheduler in that cell and the build proceeds as
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it would have without cells.
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.. warning::
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Cell functionality is currently considered experimental.
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Cell configuration options
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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