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Re: [atomic-devel] Meeting item for 20170802: Atomic Host + Modularity - Enabling CI/CD

On Wed, Aug 2, 2017 at 11:15 AM, Dusty Mabe <dusty dustymabe com> wrote:
> Recently we talked about adding more CI/CD to the Atomic Host
> processes. Since we release every two weeks we'd like to automatically
> run tests on every change that goes in to Atomic Host and prevent
> it from going into Atomic Host if it causes test failures.
> This was suggested to the Atomic Working Group from the new CI Working
> Group [1] in the 2017-07-12 meeting [2]. Stef, from the CI working
> group also sent a mail to the cloud list about it [3].
> Here are some of the things we want to be able to do:
> 1  Have a rigorous definition (including specific versions, buildroot) of
>    what goes into an Atomic Host, including dependencies.
> 2  Triggering the CI/CD pipeline based on a change to definition
>    of what goes into Atomic Host.
> 3  A way to revert a package in the Atomic Host compose to an earlier version.
> 4  A place to store higher level tests along with rigorous definition
>    of Atomic Host, including them being versioned.
> 5  Landing multiple changes that need to land together to pass testing.
> Out of that list we think we require that:
> 1R The definition of what is composed into Atomic Host artifacts should
>    include specific versions of packages, and all dependencies included.

Is this an output of or input to the compose?  I ask because
dependencies will change, so assuming they are static would be bad.
They can also vary by architecture.

> 2R The definition of what is composed in an Atomic Host should be stored
>    in a git repository so that changes can be detected easily. The
>    CI/CD pipeline can be triggered off of changes to this reposiroty.

If the answer to the above question is "output of", then this item is
essentially a package manifest for everything in the compose, correct?


> 3R A mechanism to make a future composed Atomic Host artifact, contain
>    an earlier (in RPM NVR parlance) version of a package.
> 4R The high level functional Atomic Host tests should live in the same
>    git repository with the rigorous definition of what goes into an Atomic
>    Host.
> 5R A mechanism to tell the CI Pipeline that multiple dist-git repository
>    changes (i.e. multiple changing RPMs) should be built and tested together.
> We believe that moving to an Atomic Host defined by a module [4] can
> satisfy our needs and enable the improved control of artifacts within
> Atomic Host as well as the improved triggering and coupling with a
> testing pipeline that will help us move forward. Since modularity is new
> this will take some experimentation to prove out. Let's chat about this
> in the Atomic Working Group meeting today at 1700UTC in #fedora-meeting-1.
> Dusty
> [1] https://fedoraproject.org/wiki/CI
> [2] https://meetbot.fedoraproject.org/fedora-meeting-1/2017-07-12/fedora_atomic_wg.2017-07-12-17.00.log.html
> [3] https://lists.fedoraproject.org/archives/list/cloud lists fedoraproject org/message/ZS7XY7NHXGGOPOB2YKNQUWSDUGCMYIL5/
> [4] https://docs.pagure.org/modularity/

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