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+1

On Tue, Jan 27, 2015 at 4:05 PM, Aleksandr Didenko <adidenko at mirantis.com>
wrote:

> Hi,
>
> After starting implementing granular deployment we've faced a bunch of
> issues that would make further development of this feature much more
> complicated if we have to support both Simple and HA deployment modes. For
> example: simple mode does not require cluster (corosync, pacemaker, vips,
> etc), so we had to skip this task for Simple mode somehow - we can use
> conditional tasks, or conditional manifests in our tasks, or create
> separate task graphs for different deployment modes, etc - either way it's
> pretty much doubling the amount of work for some parts of Fuel and our
> development cycle.
>
> At the moment, CI blocks us from further development of fuel-library
> modularization BP [2] because we still use Simple mode in CI. So in order
> to proceed with this BP we have two options:
>
> 1) remove Simple mode from CI/QA and thus drop it completely from Fuel
> 2) double our efforts to support both Simple and HA modes in granular
> deployment
>
> We have a BP about single-controller HA [1]. HA with single controller
> works just fine at the moment. So if you want to test Fuel on a minimum set
> of nodes, you can do this on 3 nodes (Fuel master, controller, compute),
> just like with Simple mode before. I suppose, it's time to finally drop
> support for Simple mode in Fuel :)
>
> [1] https://blueprints.launchpad.net/fuel/+spec/single-controller-ha
> [2]
> https://blueprints.launchpad.net/fuel/+spec/fuel-library-modularization
>
> --
> Regards,
> Aleksandr Didenko
>
>
> On Tue, Aug 26, 2014 at 9:25 AM, Mike Scherbakov <mscherbakov at mirantis.com
> > wrote:
>
>> Definitely fuel spec is needed :)
>>
>>
>> On Mon, Aug 25, 2014 at 8:45 PM, Evgeniy L <eli at mirantis.com> wrote:
>>
>>> Hi Andrew,
>>>
>>> I have some comments regarding to you action items
>>>
>>> >> 2) Removing simple mode from the ui and tests
>>> >> 3) Removing simple mode support from nailgun (maybe we leave it) and
>>> cli
>>>
>>> We shouldn't do it, because nailgun should handle both versions of
>>> cluster.
>>> What we have to do here is to use openstack.yaml to keep all possible
>>> modes.
>>> For new release there will be only ha, to manage previous releases we
>>> have
>>> to create data migrations in nailgun to create the filed with modes i.e.
>>> multinode
>>> and ha.
>>>
>>> Also fixes for ui are required too, I think it mostly related to wizard,
>>> 'mode' tab
>>> where use can chose ha or non ha cluster in case of new release there
>>> should
>>> be only ha, and in case of old releases there should be ha and multinode.
>>>
>>> Thanks,
>>>
>>>
>>>
>>>  On Mon, Aug 25, 2014 at 8:19 PM, Andrew Woodward <xarses at gmail.com>
>>> wrote:
>>>
>>>>  Started a new thread so that we don't hijack the older thread.
>>>>  as
>>>>
>>>>
>>>>> Andrew, will you work on it in 6.0? What are remaining items there?
>>>>> Also, it might affect our tests - simple mode runs faster so we use it for
>>>>> smoke ISO test. Anastasia, please confirm that we can switch smoke to
>>>>> one-ha-controller model, or even drop smoke at all and use BVT only
>>>>> (running CentOS 3 HA controllers and same with Ubuntu).
>>>>>
>>>>
>>>> The primary reason that we haven't disabled single yet is was due to
>>>> [0] where we where having problems adding additional controllers. With the
>>>> changes to galera and rabbit clustering it appears that we ended up fixing
>>>> it already.
>>>>
>>>> The remaining issues are:
>>>> 1) Ensuring we have good test coverage for the cases we expect to
>>>> support [1]
>>>> 2) Removing simple mode from the ui and tests
>>>> 3) Removing simple mode support from nailgun (maybe we leave it) and cli
>>>> 4) Updating documentation
>>>>
>>>> [0] https://bugs.launchpad.net/fuel/+bug/1350266
>>>> [1] https://bugs.launchpad.net/fuel/+bug/1350266/comments/7
>>>>
>>>> --
>>>> Andrew
>>>> Mirantis
>>>> Ceph community
>>>>
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>>>>
>>>>
>>>
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>>>
>>
>>
>> --
>> Mike Scherbakov
>> #mihgen
>>
>>
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>>
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