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From Prasanna Santhanam <...@apache.org>
Subject Re: database creator
Date Wed, 17 Apr 2013 07:03:41 GMT
On Tue, Apr 16, 2013 at 07:33:28PM +0530, Abhinandan Prateek wrote:
> 
> I have some queries regarding Database Creator:
> 
> Can this feature be tested on 4.1 ?
> 
> Could someone also provide more details on the following:
>  
> 1. Outline the exact steps that are involved in rolling upgrade procedure?
> 2. Can you confirm if rolling upgrades are specific to only upgrade
> procedure involving multiple management servers in a cluster?
> 3. Would rolling upgrades mean that there will be zero downtime for
> customers when upgrading? Are we also dealing with NOT having to restart all
> system Vms ? Currently restarting system Vms is part of our upgrade
> procedure.
> 
Rohit has written most of the design goals and implementation in the
wiki:
https://cwiki.apache.org/confluence/display/CLOUDSTACK/Database+Creator

The term 'rolling upgrade' might be loaded here. I don't see anything
in the spec/code that guarantees that no downtime is reqd. It only
alters the way upgrades are done - sticking to a base schema at 4.0
and doing incremental upgrades from there.

-- 
Prasanna.,

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