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 <[email protected]>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 < > [email protected]> 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 <[email protected]>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 <[email protected]> >>>> Date: Monday, February 17, 2014 at 6:30 AM >>>> To: David Easter <[email protected]> >>>> Cc: Julia Aranovich <[email protected]>, Mike Scherbakov < >>>> [email protected]>, Roman Alekseenkov <[email protected]>, >>>> Nikolay Markov <[email protected]>, Vladimir Sharshov < >>>> [email protected]>, Bogdan Dudko <[email protected]>, < >>>> [email protected]> >>>> >>>> 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 > [email protected] > -- Mike Scherbakov #mihgen
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