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Re: Combined controller and compute node

 

What kind of side stuff are we doing and what kind of problems will it lead
to?

On Tue, Mar 11, 2014 at 12:20 PM, Vladimir Kuklin <vkuklin@xxxxxxxxxxxx>wrote:

> Ryan
>
> There could be some intersections between controller and compute node
> configuration. I am still not quite sure that installing controller and
> compute configs will not break anything: you will need to run tempest at
> least. We are running 2 contradicting classes, which we should not.
> Instead, we should split deployment into small pieces and install only
> nova-compute and dependencies on the controller node. Currently, we are
> doing a lot if side stuff, that can lead us to a lot of problems.
>
>
> On Tue, Mar 11, 2014 at 11:05 PM, Mike Scherbakov <
> mscherbakov@xxxxxxxxxxxx> wrote:
>
>> Great finding!
>> I believe there were some minor issues, and there were no use cases for
>> using all-in-one deployment. That's why we kept it as is, and didn't even
>> bother fixing the issues. If we remove restriction, then it means we have
>> to test it thoroughly. For this particular case, there is 95% guarantee
>> that it will work just fine on one node if it works on two.
>>
>> So I'm +1 for removing the restriction. It will also allow us to rewrite
>> some smoke tests to use single-node env to speed up Fuel CI checks.
>>
>> However we must keep at least system tests for distributed envs, as it is
>> easy to hardcode "localhost" somewhere and we must always ensure that Fuel
>> works in distributed mode.
>>
>>
>> On Tue, Mar 11, 2014 at 10:57 PM, Ryan Moe <rmoe@xxxxxxxxxxxx> wrote:
>>
>>> What were the reasons for not allowing a node to have both the compute
>>> and controller roles? In my initial testing it appears that this works
>>> fine. OSTF passes, all controller functions continue working, VMs boot,
>>> etc. If those original concerns are no longer valid or if they can be
>>> addressed then we can remove another arbitrary restriction from Fuel.
>>>
>>> Thoughts?
>>>
>>> -Ryan
>>>
>>> --
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>>>
>>
>>
>> --
>> Mike Scherbakov
>> #mihgen
>>
>> --
>> Mailing list: https://launchpad.net/~fuel-dev
>> Post to     : fuel-dev@xxxxxxxxxxxxxxxxxxx
>> Unsubscribe : https://launchpad.net/~fuel-dev
>> More help   : https://help.launchpad.net/ListHelp
>>
>>
>
>
> --
> Yours Faithfully,
> Vladimir Kuklin,
> Senior Deployment Engineer,
> Mirantis, Inc.
> +7 (495) 640-49-04
> +7 (926) 702-39-68
> Skype kuklinvv
> 45bk3, Vorontsovskaya Str.
> Moscow, Russia,
> www.mirantis.com <http://www.mirantis.ru/>
> www.mirantis.ru
> vkuklin@xxxxxxxxxxxx
>

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