[openstack-dev] [tc] [heat] [murano] [app-catalog] OpenStack Apps Community, several suggestions how to improve collaboration

Ihor Dvoretskyi idvoretskyi at mirantis.com
Tue May 31 16:27:18 UTC 2016


Great initiative, +1 from me.
On May 31, 2016 7:24 PM, "Sergey Kraynev" <skraynev at mirantis.com> wrote:

> Hi Infra, Murano and App Catalog teams.
> We discussed in some more details plan suggested below with App Catalog,
> Murano and (partially) Infra team regarding moving repositories with source
> code of Murano applications out of area of responsibility of Murano core
> team.
> ***** *First part related with changes in existing Murano repository and*
> important for Murano App developers *****
> Decision was made to:
> - create new gerrit groups for review/release/test repository, namely -
> murano-apps-core
> - don't rename murano-apps project and repository, just assign team above
> as owners (murano-apps-core)
> Previous owner of this project (murano-core) will be part of new group to
> continue sharing expertise in Murano with this new team and help them going
> forward.
> There is patch on review for it: https://review.openstack.org/#/c/323340/3
> Separation of murano-apps from Murano is the first step in separating work
> with Murano applications from work with Murano core project.
> ***** *Second part related with changes with future repositories and*
> important for Openstack Infra team *****
> JFYI, what we plan to do as next steps.
> Murano team will re-create some applications in their repositories using
> name murano-examples, as reference implementation of some of the
> applications which Murano team decides to keep in their project for
> reference. This can be done by Murano team, no external help needed.
> Some of the applications (complicated and big applications like CI/CD
> pipeline or Kubernetes cluster) will have their own repositories in the
> future under openstack/. Actually CI/CD pipeline already lives in separated
> repository, probably Kubernetes should be also moved to separated repo
> going forward. Hopefully this shouldn't be a big deal for OpenStack Infra
> team.
> *However* we would like to get confirmation, that *Infra team* is ok with
> it?
> Suggestion is to use common template for names of repositories with Murano
> applications in the future, namely openstack/murano-app-...
> (openstack/murano-app-kubernetes, openstack/murano-app-docker, ...). We'll
> describe overall approach in more details using
> https://launchpad.net/murano-apps as entry point.
> Simple applications or applications where there is no active development
> will keep being stored in murano-apps until there is a demand to move some
> of them to separated repository. At that point we'll ask OpenStack Infra
> team to do it.
> We hope that this will help to clearly identify area of responsibility
> around development of Murano applications, helping to onboard new
> contributors/teams using mostly efforts of Murano Apps team. I.e. creation
> of new application in murano-apps repository means in this model just
> creation of new directory with new application, which can be done by
> murano-apps team on their own. In this case we'll need to understand how to
> organize CI for different applications being stored in the same repository
> but I think we'll figure it out, it's not a blocker.
> This model allows us to ask for involvement of OpenStack Infra team only
> in rare cases when there is a need to create separate repository for
> especially big and complicated Murano Application which should be treated
> as a dedicated project with its own development team and CI.
> Any suggestions, questions are welcome!!!!
> On 25 May 2016 at 14:37, Igor Marnat <imarnat at mirantis.com> wrote:
>> Colleagues,
>> having attended many sessions and talked to many customers, partners
>> and contributors in Austin I’d like to suggest several improvements to how
>> we develop OpenStack apps and work with the Community App Catalog (
>> https://apps.openstack.org/).
>> Key goals to achieve are:
>> - Provide contributors with an ability to collaborate on OpenStack
>> apps development
>> - Provide contributors and consumers with transparent workflow to
>> manage their apps
>> - Provide consumers with information about apps - how it was developed
>> and tested
>> - To summarize - introduce the way to build community working on
>> OpenStack apps
>> *What is OpenStack application*
>> OpenStack is about 6 years young and all these years discussions about
>> it are in progress. Variety of applications is huge, from LAMP stacks
>> and legacy Java apps to telco workloads and VNF apps. There is working
>> group which works on a definition of "What is OpenStack application",
>> hopefully community will agree on definition soon.
>> For the sake of our discussion below let us agree on a simple approach:
>> an OpenStack application is any software asset which 1. can be executed on
>> an OpenStack cloud, 2. lives in apps.openstack.org.  So far there are
>> Murano applications, Heat templates, Glance images and TOSCA templates.
>> There are many good OpenStack applications in the world which don't live
>> in OpenStack App Catalog. However, let us for now concentrate on those
>> which do, just for the sake of this discussion.
>> *Introduction to OpenStack development ecosystem*
>> OpenStack was introduced about 6 years ago. Over these years
>> community grown significantly. There were 8 companies contributing to
>> OpenStack in Austin (1-st release). In Mitaka (13-th release) there were 64
>> companies contributing.
>> One of the reasons for this growth is the set of sophisticated tools
>> the OpenStack contributor ecosystem has chosen to use or build to
>> enable collaboration:
>> - software repositories: http://git.openstack.org/cgit/openstack/nova,
>> http://git.openstack.org/cgit/openstack/neutron, ..
>> - bug trackers: https://launchpad.net/nova, https://launchpad.net/neutron
>> , ...
>> - same instance of gerrit for all the projects for code review:
>> https://review.openstack.org/
>> - gating test infrastructure http://zuul.openstack.org/
>> - common approach to release management, repositories management,
>> naming, tons of other things managed by review in
>> https://review.openstack.org/#/q/status:open+project:openstack/governance
>> - IRC channels, etherpads, meetings and mailing lists
>> - governance to manage all of the above
>> All of the above is what we can call OpenStack collaboration ecosystem
>> and it is a key factor for OpenStack community success.
>> *Introduction to OpenStack apps development ecosystem*
>> Now when OpenStack is mature and have it up and running is not a big
>> deal, focus of community and customers shifts from "how do I get a running
>> cloud" to "what do I do with running cloud".
>> Use cases of different cloud users are very different, however one
>> can identify and develop standard building blocks which can be reused by
>> cloud users (service providers, DevTest teams, ...). Many cloud users want
>> to contribute their homegrown apps upstream because:
>> - it allows to other people to use it and improve it
>> - community can implement missing parts
>> - community can help with testing and maintaining an app
>> Year ago we introduced Community App Catalog for OpenStack
>> http://apps.openstack.org as an integration/distribution point of
>> customer experience/apps. This initiative is successful, there are about
>> 100 software assets of various kinds which can be run on OpenStack. For
>> further growth we need to make several changes in a way we approach
>> collaboration around OpenStack Apps. Namely, we need to provide an ability
>> to apps developers to collaborate on application development.
>> *OpenStack Community App Catalog is there, what else?*
>> Community App Catalog http://apps.openstack.org allows to
>> publish/consume apps to/from it.
>> "The OpenStack Community App Catalog is designed to use the same tools
>> for submission and review as other OpenStack projects. As such we follow
>> the OpenStack development workflow" [0].
>> To follow OpenStack development workflow, apps developers need to have:
>> - dedicated repositories & code review system to collaborate on code
>> - mailing lists, IRC channels, core reviewers teams
>> - common approach to QA
>> - governance model to manage all of the above
>> Most of the above is missing for apps developers now.  App Catalog
>> provides central place to store final artifacts (ready apps, like .exe
>> files in Win world) but there is no centralized infrastructure to
>> collaborate on development of source code of apps.
>> Apps developers partially use infrastructure of OpenStack core
>> projects (Heat & Murano) - repositories and bug trackers. Other than that
>> they are on their own, there are no teams, no mailing lists, no IRC
>> channels for apps developers - most of the items from the list above is
>> missing.
>> [0] https://wiki.openstack.org/wiki/App-Catalog#How_to_contribute
>> *All right, we need to change something. What exactly?*
>> 1.  We need to introduce a team which manages content of Community
>> App Catalog, decides which new assets can be added, decides on a workflow
>> for apps publishing, maintaining, consuming. This team could be a
>> complimentary team working alongside the Community App Catalog
>> implementation team (engine, backend, frontend); or within the team itself
>> 2. There should be separated repositories for source code of apps
>> from Community App Catalog. These repositories should not be stored
>> under openstack label as they do not relate to core OpenStack projects.
>> Core project teams are not responsible for maintaining apps.
>> 3. Bug tracking for apps should be separated from bug tracking for
>> core projects.
>> 4. There should be teams working on apps with core reviewers, IRC
>> channels and mailing lists. These teams should differ from core projects
>> teams.
>> 5. Given #1 - #4 it seems reasonable to develop governance model
>> specific for OpenStack Apps Community, which differs (when it’s necessary)
>> from governance model of OpenStack Community.
>> Let us develop such a governance model, implement changes described
>> above and build community of OpenStack apps developers.
>> PS. There is representative discussion in comments to
>> https://review.openstack.org/#/c/309383/. Some team wants to add new
>> repository for CI/CD Murano app. Should it be part of Murano core project?
>> Rather not. Should it be part of BigTent? Well, rather not as BigTent is
>> for core OpenStack services, not for workloads on top of it. At the same
>> time team wants to use some OpenStack infra resources (at least gerrit for
>> now) as this project is obviously beneficial for OpenStack. We need to have
>> an ability to resolve similar requests in a centralized manner - there are
>> more teams who want to publish
>> source code of their OpenStack apps and there is no established
>> workflow for that.
>> *Agree. What’s next?*
>> Suggested plan:
>> - Introduce label openstack-apps, put repositories with source code
>> of OpenStack Apps under it, i.e.:
>>   * http://git.openstack.org/cgit/openstack-apps/murano-apps
>>   * http://git.openstack.org/cgit/openstack-apps/heat-templates
>>   * http://git.openstack.org/cgit/openstack-apps/tosca-workflows
>> - Agree with OpenStack Community App Catalog team on how content of
>> App Catalog is managed and by whom
>> - Describe workflow of how to add source code of new application
>> to repositories, who approves its addition
>> - Introduce simplified workflow of publishing new Application to
>> the catalog:
>>   * register/login
>>   * push/update
>>   * done
>> - Introduce teams (core reviewers) contributing to/maintaining Murano
>> apps, Heat templates, ...
>> - Establish channels of communications with potential contributors
>> (mailing list, meetings, IRC/slack channel, ... )
>> - Agree with contributors on QA process for applications and how we
>> track it in Community App Catalog
>> To simplify commenting and tracking of the plan above I put last
>> two sections with suggested steps to the etherpad
>> https://etherpad.openstack.org/p/OpenStackAppsCommunity
>> We're also discussing this topic with OpenStack Application Ecosystem
>> Working Group and several members of OpenStack App Catalog team support
>> this idea:
>> http://lists.openstack.org/pipermail/user-committee/2016-May/000854.html
>> Please share your thoughts and comments.
>> Regards,
>> Igor Marnat
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> --
> Regards,
> Sergey.
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