Open Stack

Hi, I agree here, maybe a forklift upgrade might be easier. As Mohammed pointed out the placement and cells are one of the big ones. 
If anything, you would need to upgrade just pre placement and pre cell and then use the upgrade path there to overcome that hurdle and then move forward. With 11 (at least) releases , it’s gonna be rough. 
I would argue, carefully with the amount of changes, you are trying to migrate windows 3.11 to windows 10...
It probably can be done but (aside the 32 bit etc:)) ... wow

If you need to upgrade on existing hardware, why not consolidate some instances and free up some nodes and build the environment then up?

Good luck!:)

> On 13. Dec 2019, at 0.41, Mohammed Naser <mnaser at vexxhost.com> wrote:
> 
> On Thu, Dec 12, 2019 at 4:53 PM Ken D'Ambrosio <ken at jots.org> wrote:
>> 
>> Hey -- I've run a number of OpenStack clouds from multiple vendors for
>> several years, now.  But I've *never* done an upgrade.  I've read some
>> of the docs, but they don't really make it clear (at least, the ones
>> I've thus-far found):
>> * If going from Juno to something pretty recent is even feasible
> 
> Stuff will probably break, you're talking about upgrading from 11 releases.
> 
> There's just SO much that happened in that period of time & transitions.
> 
>> * If I have to do intermediate steps along the way
> 
> Many, placement extraction, migration to cells v2 are two big ones
> that come to mind
> 
>> * How likely it is to "just work:" complexity, common issues, etc.
> 
> Quite honestly, the complexity is very high of what you're trying to
> accomplish and I would seriously consider redeploying your clouds
> on new hardware and migrating workloads at this point.
> 
>> The fact that there's a clearly codified fallback procedure, while an
>> inherently good thing to have, does concern me some.
>> 
>> Any insights would be much appreciated.
>> 
>> Thanks!
>> 
>> -Ken
>> 
> 
> 
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