Open Stack

> Do we really need a custom format? Why can not we use native format
> for yum.conf and apt.sources files

Because we don't want to parse this format each time we want to verify
/ handle particular component of this format. Moreover, there's no,
for example, priority in Debian repo format. Priority is used by apt
preference (not by repo itself).

We're talking about Fuel internal representation, and it would be nice
to have one internal format across various Fuel projects.


> But UI, in my opinion, should follow practices that already exist, not define something new.

AFAIU, the idea is to unified internal representation and keep UI as
close to distributive standards.

On Fri, Dec 11, 2015 at 12:53 PM, Aleksandra Fedorova
<afedorova at mirantis.com> wrote:
> Hi,
>
> I agree with the idea of unification for repo configurations, but it
> looks like we are developing yet another standard.
>
> Do we really need a custom format? Why can not we use native format
> for yum.conf and apt.sources files, and native tooling (all those
> python bindings, cli utils and so on) which is already developed to
> work with them?
>
> On Fri, Dec 11, 2015 at 1:29 PM, Igor Kalnitsky <ikalnitsky at mirantis.com> wrote:
>> Hey folks -
>>
>> +1 from my side on the idea of having the unified repo format. It will
>> simplify a cross-project contribution. I think we can file a blueprint
>> for 9.0.
>>
>> I have only two questions to discuss:
>>
>> * We need to declare format for RPM repos either.
>> * Shouldn't we use slightly different set of fields for flat Debian repos?
>>
>> - Igor
>>
>> On Fri, Dec 11, 2015 at 11:28 AM, Fedor Zhadaev <fzhadaev at mirantis.com> wrote:
>>> Hello Vladimir,
>>>
>>> I definitely agree that using one uri for generating number of repos is not
>>> the best solution.
>>> According to Fuel Menu - there was the discussion in gerrit [1] about
>>> repositories format. The first version of my patch implements actually your
>>> idea about equality and independence of repositories. It meets disagreements
>>> and no one voted for this POV. So I had to change the implementation in
>>> favor to the current version.
>>>
>>> According to this situation I would like to discuss if proposed changes are
>>> needed before making new patch. Guys, who took part in the previous patch
>>> discussion, please share your opinions.
>>>
>>> [1] https://review.openstack.org/#/c/242646/
>>>
>>> 2015-12-10 22:47 GMT+03:00 Vladimir Kozhukalov <vkozhukalov at mirantis.com>:
>>>>
>>>> Dear colleagues,
>>>>
>>>> At the moment we have several places where we configure multiple rpm/deb
>>>> repositories. Those are:
>>>>
>>>> Web UI (cluster settings tab) where we define repos for cluster deployment
>>>> Fuel-menu (bootstrap section) where we define repos for building ubuntu
>>>> bootstrap image
>>>> Fuel-mirror where we define repos that are to be cloned (full or partial
>>>> mirrors)
>>>>
>>>> I'd prefer all these places to provide the same UX. By that I mean that
>>>> these components should use the same input data structure like this [0],
>>>> i.e. a flat list of fully independent repositories (see an example below).
>>>> First repo in the list is supposed to be a base OS repo (i.e. contains base
>>>> packages like libc).
>>>>
>>>> [
>>>>  {
>>>>     type: deb,
>>>>     url: some-url,
>>>>     section: some-section,
>>>>     suite: some-suite,
>>>>     priority: some-priority
>>>>   },
>>>>   {
>>>>     type: deb,
>>>>     url: another-url,
>>>>     section: another-section,
>>>>     suite: another-suite,
>>>>     priority: another-priority
>>>>   },
>>>> ...
>>>> ]
>>>>
>>>> I'd like to focus on the fact that these repositories should be defined
>>>> independently (no base url, no base suite, etc.) That makes little sense to
>>>> speculate about consistency of a particular repository. We only should talk
>>>> about consistency of the whole list of repositories together.
>>>>
>>>> I'll try to explain. In the real world we usually deal with sets of
>>>> repositories which look like this:
>>>>
>>>> http://archive.ubuntu.com/ubuntu/dists/trusty/
>>>> http://archive.ubuntu.com/ubuntu/dists/trusty-updates/
>>>> http://archive.ubuntu.com/ubuntu/dists/trusty-security/
>>>> http://mirror.fuel-infra.org/mos-repos/ubuntu/8.0/dists/mos8.0/
>>>> http://mirror.fuel-infra.org/mos-repos/ubuntu/8.0/dists/mos8.0-updates/
>>>> http://mirror.fuel-infra.org/mos-repos/ubuntu/8.0/dists/mos8.0-security/
>>>>
>>>> As you can see these repositories have common hosts and base suites and it
>>>> instills us to think that repositories should not be defined separately
>>>> which is wrong. This special case does not break the whole approach. It is
>>>> just a special case. Repositories are nothing more than just sets of
>>>> packages that can depend on each other forming a tree when taken together.
>>>> Package relation does matter, not repository location, not suite name.
>>>> Parsing package tree for a set of repositories we can easily figure out
>>>> whether this set is consistent or not (e.g. python-packetary allows to do
>>>> this).
>>>>
>>>> Taking into account the above, I'd say UI should allow a user to define
>>>> repositories independently not forcing to use special patterns like suite +
>>>> suite-updates + suite-security, not forcing repositories to be located on
>>>> the same host. That means we should modify fuel-menu bootstrap section which
>>>> currently allows a user to define a base url that is then used to form a
>>>> group of repos (base, base-updates, base-security). Besides, it contradicts
>>>> to our use case when we put mosX.Y locally on the master node while
>>>> mosX.Y-updates and mosX.Y-security are supposed to be available online.
>>>>
>>>> What do you guys think of that?
>>>>
>>>>
>>>> [0]
>>>> https://github.com/openstack/fuel-web/blob/master/nailgun/nailgun/fixtures/openstack.yaml#L2006-L2053
>>>>
>>>>
>>>> Vladimir Kozhukalov
>>>>
>>>> __________________________________________________________________________
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>>>>
>>>
>>>
>>>
>>> --
>>> Kind Regards,
>>> Fedor Zhadaev
>>>
>>> Skype: zhadaevfm
>>> IRC: fzhadaev
>>>
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>>
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>
>
>
> --
> Aleksandra Fedorova
> CI Team Lead
> bookwar
>
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