openstack
/
nova
Code Issues Proposed changes

Distinguish between cells v1 and v2 in upgrades doc 

The note about rolling upgrades not being supported for cells
was referring to cells v1, so let's make that clear.

We will support rolling upgrades for cells v2 deployments, we
just haven't documented it yet (or done it in a grenade job).

Change-Id: I6a8b3d3aaa49859e8b769a296684ac96883719f8
This commit is contained in:
Matt Riedemann 2017-04-03 13:31:15 -04:00
parent bcd0221c46
commit 068d2565d1
1 changed files with 5 additions and 2 deletions
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7
doc/source/upgrade.rst
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@ -251,10 +251,13 @@ RPC version pinning
.. note::
This does not apply to cells deployments since cells does not currently
support rolling upgrades. It is assumed that cells deployments are
This does not apply to cells v1 deployments since cells v1 does not
support rolling upgrades. It is assumed that cells v1 deployments are
upgraded in lockstep so n-1 cells compatibility does not work.
The procedure for rolling upgrades with multiple cells v2 cells is not
yet determined.
Online Configuration Reload
During the upgrade, we pin new serves at the older RPC version. When all
services are updated to use newer code, we need to unpin them so we are