Bug 1309608 - Smooth upgrade
Summary: Smooth upgrade
Keywords:
Status: CLOSED CANTFIX
Alias: None
Product: Red Hat OpenStack
Classification: Red Hat
Component: rhosp-director
Version: unspecified
Hardware: Unspecified
OS: Unspecified
low
low
Target Milestone: ---
: 8.0 (Liberty)
Assignee: Angus Thomas
QA Contact: yeylon@redhat.com
URL:
Whiteboard:
: 1309605 1309606 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-02-18 09:38 UTC by Hideki Kawai
Modified: 2016-04-18 07:12 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-02-18 15:22:54 UTC
Target Upstream Version:

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Description Hideki Kawai 2016-02-18 09:38:51 UTC 
Description of problem:

Currently, it is necessary to stop services to upgrade OpenStack, and OpenStack needs to be upgraded with every verison. 
(Ex. Kilo->Liberty, Liberty->Mitaka)

We need a smooth upgrade where OpenStack can be upgraded without stopping resources already provisioned, and it allows skip of some versions.
(Ex. Kilo -> Mitaka, Icehouce->Mitaka)
Comment 2 Stephen Gordon 2016-02-18 12:47:32 UTC 
*** Bug 1309605 has been marked as a duplicate of this bug. ***
Comment 3 Stephen Gordon 2016-02-18 12:48:16 UTC 
*** Bug 1309606 has been marked as a duplicate of this bug. ***
Comment 4 Nick Barcet 2016-02-18 15:22:54 UTC 
Unfortunately, this would involve having the OpenStack community accept that we need to have stability on the internal communication process (RPC) that is being used to communicate between controllers and agents.  It was already an enormous push to get this happening for N -> N+1, and is barely completed with Mitaka.  I am not sure we will be able to make this happen in a short term release without blocking the project's evolution more than what would be acceptable by upstream.
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