Open Stack

Clint Byrum wrote:
> Excerpts from Joshua Harlow's message of 2015-04-03 10:08:07 -0700:
>> Monty Taylor wrote:
>>> On 04/03/2015 08:55 AM, Maish Saidel-Keesing wrote:
>>>> I was wondering..
>>>>
>>>> Is the OpenStack CI/CD Infra using Heat in any way? Do the commits
>>>> trigger a new build of DevStack/OpenStack that is based on a Heat
>>>> Template or just the provisioning of a regular instance and then
>>>> deployment of code on top of that?
>>> Nope - we do not use heat - we use a program called nodepool:
>>>
>>> http://git.openstack.org/cgit/openstack-infra/nodepool/
>>>
>>> Which uses the nova api to provision servers. These servers are
>>> currently registered as jenkins slaves so that the workload run on them
>>> is defined a s jenkins job.
>>>
>>> There are a few reasons we do not use heat for this - none of them I
>>> think of as negative against heat:
>>>
>>> - Our pool spans 4 regions of 2 public clouds. Heat runs in a cloud, the
>>> positioning is wrong
>>> - Our pool is predominantly single-machines that are used once - which
>>> means a heat template would add extra complexity for not much gain.
>>> - Our current system predates the existence of heat. It is also highly
>>> specific to the task at hand - namely, ensuring that there are always
>>> test nodes available.
>> Can these things be fixed? Heat afaik isn't a frozen piece of sofware...
>> It would be pretty neat to use the projects that we have that others are
>> using if we could. Might be an interesting summit topic/idea?
>>
>
> Monty said these aren't negatives. They're just aspects. Heat is
> supposed to alleviate you from needing to build something specific like
> Nodepool. But it wasn't there, and nodepool is specific to the task,
> so there's no point in using Heat for it. It's like using hammer and
> nails to build your scaffolding because you don't have a nailgun. Was
> it ideal? No, but at this point, the scaffolding is built.. no point in
> tearing it down so you can build it again, only faster.

Fair enough, if the house is built and its setup, then sure, but if its 
a shack and u can upgrade to a house, sometimes it is better to just 
remove the scaffolding and move into a house... (today must be analogy 
day, ha).

>
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