maas how to add-cloud to a zone

[Mark Shuttleworth]

Yes, this will work. I like the idea of being able to add constraints
dynamically so you don't have to change the YAML.

However, one thing to think about, as John said this way of using is
like deploying everything to on Availability Zone on AWS, it would
generally be a bad idea. The expected strategy is that you spread stuff
across Availability Zones, so that losing an AZ doesn't compromise your
applications.

Juju will do all the work for you. If you juju deploy Cassandra on MAAS,
and then add a few units, you will see they are naturally spread across
the MAAS AZs.

Mark

On 15/03/17 09:54, christian.setzer at freies-franken.org wrote:
> For now i found a way to work around this. I group machines now by
> tags. Then use constraints to deploy the charms to those groups.
> This works quite well. It would be nice if charm bundles would support
> constraints without changing the .yaml file which i have to do now..
> but it works.
>
> so in the machine section of a bundle i set the constraint to a tag.
>
> machines:
>   '0':
>     series: xenial
>     contraints: tags=test
>   '1':
>     series: xenial
>     contraints: tags=test
>   '2':
>     series: xenial
>     contraints: tags=test
>   '3':
>     series: xenial
>     contraints: tags=test
>
>
> BR
>
> Christian
>
>
> Am 2017-03-15 10:44, schrieb John Meinel:
>> Zones are generally meant to be used to provide fault domains such
>> that you should be spreading your applications across zones. I can see
>> how zones could be used differently but it does feel like it would be
>> going against the grain.
>>
>> John
>> =:->
>>
>> On Mar 15, 2017 13:01, "Menno Smits" <menno.smits at canonical.com>
>> wrote:
>>
>>> Hi Christian,
>>>
>>> Someone who knows more about Juju's MAAS support may disagree with
>>> me but I just had a quick look through the code I don't see any way
>>> to specify the MAAS zone as part of a MAAS cloud definition.
>>>
>>> - Menno
>>>
>>> On 14 March 2017 at 13:26, <christian.setzer at freies-franken.org>
>>> wrote:
>>>
>>>> Hi
>>>>
>>>> Is it possible to add-cloud a maas cloud to a specific zone?
>>>> like
>>>>
>>>> juju bootstrap --to zone=foozone
>>>> juju enable-ha --to zone=foozone
>>>> juju deploy --to zone=foozone
>>>>
>>>> I'm using 2.1.1 devel version.
>>>>
>>>> BR
>>>>
>>>> Christian
>>>>
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>>
>>
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>