fuel-dev team mailing list archive

[Mike Scherbakov <mscherbakov@xxxxxxxxxxxx>]

I chatted with Vladimir in #fuel-dev, and clarified the situation.
So, for my point a) or #2 in Vladimir's response - when we add new
controllers to deployed env - we need to provide UI message and prevent
user from doing so, as it is not supported at the moment.

For creating new envs with >3 controllers - it should work in theory.
Nastya, waiting from you results of testing of this case.

Thanks,


On Tue, Feb 18, 2014 at 1:11 PM, Vladimir Kuklin <vkuklin@xxxxxxxxxxxx>wrote:

> Mike
>
> 1) I am not aware of any problems of initial N-controller setup
> configuration. Could anyone point me to the bug regarding this problem?
> 2) Adding of the controller is the same problem as I already pointed - it
> is related to the cluster lifecycle management which we do not have right
> now and are really striving hard to (partially-) implement in 5.0 release.
> As soon as we have controller added - we need to go through all the
> controllers and fix configuration for: rabbitmq, haproxy, mysql and so on.
> Thus, we need to split deployment into granular roles and re-run deployment
> for particular roles. Currently, our roles are far too huge to do this,
> that's why we need granular deployment feature.
>
>
>
>
> On Tue, Feb 18, 2014 at 12:54 PM, Mike Scherbakov <
> mscherbakov@xxxxxxxxxxxx> wrote:
>
>> Fuelers, as far as know, deployment or operation breaks if:
>> a) we add controllers to existing deployed environment (let's say we had
>> 1, then we add another one in attempt to make it HAed)
>> b) we add more than 3 controllers in HA mode, regardless of if 3 were
>> deployed and we add 1 new, or we try to initially deploy 4.
>> And we had this limitation for the very beginning, our UI just was not
>> handling this situation - so now we are fixing UI behavior.
>>
>> Vladimir, can you please update with latest status on this, and provide
>> short info on why we have such limitations if it is the case?
>>
>> Thanks,
>>
>>
>> On Mon, Feb 17, 2014 at 11:09 PM, David Easter <deaster@xxxxxxxxxxxx>wrote:
>>
>>> Hi Vitaly,
>>>
>>>    Expanding to fuel-dev for discussion.  I'm a bit confused on where
>>> those messages would be displayed.  I brought up an environment deployed by
>>> Fuel 4.0 in HA mode (3 controllers) and added a fourth controller.  I did
>>> not get an error message.  So it looks like (a) Fuel can deploy more than 3
>>> controllers in an HA environment and (b) that I can add an additional
>>> controller to an already deployed cluster.  In adding the fourth controller
>>> to the HA environment, it looks like it redeployed the other  controllers
>>> as well  - but still was successful.
>>>
>>>   Perhaps these are outdated messages?
>>>
>>> Thanks,
>>>
>>> - David J. Easter
>>>   Product Line Manager,  Mirantis
>>>
>>>>
>>>>  From: Vitaly Kramskikh <vkramskikh@xxxxxxxxxxxx>
>>>> Date: Monday, February 17, 2014 at 6:30 AM
>>>> To: David Easter <deaster@xxxxxxxxxxxx>
>>>> Cc: Julia Aranovich <jkirnosova@xxxxxxxxxxxx>, Mike Scherbakov <
>>>> mscherbakov@xxxxxxxxxxxx>, Roman Alekseenkov <ralekseenkov@xxxxxxxxxxxx>,
>>>> Nikolay Markov <nmarkov@xxxxxxxxxxxx>, Vladimir Sharshov <
>>>> vsharshov@xxxxxxxxxxxx>, Bogdan Dudko <bdudko@xxxxxxxxxxxx>, <
>>>> mmcroberts@xxxxxxxxxxxx>
>>>>
>>>> Subject: Re: Need translations for Stop Deployment && Reset
>>>> environment features on UI
>>>>
>>>> Hi David,
>>>>
>>>> Could you please also propose better translations for:
>>>> "New controllers cannot be added to an operational environment."
>>>> (shown when user tries to add more controllers to already deployed cluster)
>>>> "Only 3 controllers can be assigned in a Highly-Available environment.
>>>> " (shown when user tries to add more than 3 controllers to HA cluster)
>>>>
>>>>
>>>>
>>>>
>>
>>
>> --
>> Mike Scherbakov
>> #mihgen
>>
>
>
>
> --
> 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
>



-- 
Mike Scherbakov
#mihgen