Standing SRU for new MAAS releases.

[Andres Rodriguez]

On Thu, Sep 25, 2014 at 2:39 PM, Andres Rodriguez <andreserl at ubuntu.com>
wrote:

> Hi Marc,
>
> Sorry for a late reply, I missed your email.
>
> It's still unclear to me how you are going to make sure a mi x of
>> different major
>> versions on controllers and nodes will be handled properly.
>>
>> How far back will you maintain backward and forward compatibility?
>
>
> The MAAS API is fully backward and forward compatible. We have ensured
> that all API calls have not changed with the new upstream changes. This
> ensures that users of the MAAS API are not affected with the new features.
> We have put this in practice on deployments that use the MAAS API.
>
>
>
> How will you automate testing of all the different combinations of
>> versions?
>
> Are there any scenarios that will not be handled? For example, will there
>> be any
>> restrictions in mixing different versions where, for example, controllers
>> need
>> to be a higher version than the nodes, or that all controllers need to
>> run the
>> same version, etc?
>>
>
There will be restrictions in mixing different versions when:

We are using an older version of Curtin. Newer version of MAAS has added
support for different Hardware Architectures, that require its counterpart
in Curtin. This is why curtin has been added to this request.

Fortunately, a newer version of MAAS with and older version of MAAS remains
fully backward compatible in the sense that already enabled and certified
architectures (in MAAS) wont be affected.


-- 
Andres Rodriguez (RoAkSoAx)
Ubuntu Server Developer
Systems Engineer
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