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Migrating git repos to OpenDev


On Wed, Apr 17, 2019 at 9:16 AM Clark Boylan <cboylan at sapwetik.org> wrote:
>
> On Thu, Apr 11, 2019, at 3:21 PM, Clark Boylan wrote:
> > On Thu, Mar 7, 2019, at 1:46 PM, James E. Blair wrote:
> > > Hi,
> > >
> > > As discussed in November[1], the OpenStack project infrastructure is
> > > being rebranded as "OpenDev" to better support a wider community of
> > > projects.
> > >
> > > We are nearly ready to perform the part of this transition with the
> > > largest impact: moving the authoritative git repositories for existing
> > > projects.
> > >
> > > In this email, I'd like to introduce the new hosting system we are
> > > preparing, discuss the transition, and invite projects to work with us
> > > on the logistics of the change.
> > >
> > > Gerrit
> > > ======
> > >
> > > Gerrit is the core of our system and it will remain so in OpenDev.  As
> > > part of this move, we will rename the gerrit server from
> > > review.openstack.org to review.opendev.org.  As part of the transition,
> > > we will automatically merge appropriate changes to all branches of all
> > > repositories updating .gitreview and Zuul configuration files.  Any
> > > further changes (README files, etc.) we expect to be made by individual
> > > project contributors.
> > >
> > > Repository Browsing
> > > ===================
> > >
> > > Currently our canonical *public* repository system is the cgit server at
> > > https://git.openstack.org/ (and git.airshipit.org, git.starlingx.io, and
> > > git.zuul-ci.org).  This is a load balanced cluster of several servers
> > > which is designed to handle all the public git repository traffic, as it
> > > scales much better than Gerrit (and has a more friendly domain name).
> > > From a technical standpoint, it's excellent, but its usability could be
> > > improved.
> > >
> > > Therefore, as part of this transition, we will replace the cgit servers
> > > with a new system based on Gitea.  Gitea is a complete development
> > > collaboration system, but it's very flexible and will allow us to
> > > disable components which we aren't using.  We will operate it in a
> > > read-only configuration where it will act as the public mirror for
> > > Gerrit.  The advantages it has over the current system are:
> > >
> > > * Shorter domain name in project URLs:
> > >   https://git.openstack.org/openstack/nova   vs
> > >   https://opendev.org/openstack/nova
> > > * Clone and browsing URLs are the same (with cgit, the browsing URL has
> > >   an extra path component)
> > > * More visually pleasing code browsing
> > > * Integrated code searching
> > > * Ability to highlight multiple lines in links
> > >
> > > When we perform the transition we will install redirects from
> > > git.openstack.org (and the other git sites) to opendev.org, and will
> > > maintain those redirects for the foreseeable future.  We will construct
> > > them so that even existing deep links to individual files in individual
> > > commits to cgit will redirect to the correct location on opendev.org.
> > >
> > > This system is up and running now with a live mirror of data from
> > > Gerrit, and you can start testing it out today at https://opendev.org/
> > >
> > > Please let us know if you encounter any problems.
> > >
> > > If you would like to read more about the design of this system and the
> > > transition, see the infra-spec[2].
> > >
> > > GitHub
> > > ======
> > >
> > > Currently all OpenStack projects are replicated to GitHub.  We do not
> > > plan on changing that during the transition, however, any projects
> > > outside of the openstack*/ namespaces will not automatically be
> > > replicated to GitHub, and we do not plan on adding that in the future.
> > > We do, however, support projects using Zuul to run post-merge jobs to
> > > push updates to GitHub or any other third-party mirrors with their own
> > > credentials.  We will be happy to work with anyone interested in that to
> > > help set up jobs to do so.
> > >
> > > We are adopting this approach so that individual projects can have more
> > > control over how they are represented in social media, and to give us
> > > more flexibility in supporting our own organizational namespaces on
> > > OpenDev without assuming they map directly to GitHub.
> > >
> > > Eventually we plan on moving the OpenStack project to that system as
> > > well and retiring direct replication from Gerrit to GitHub completely.
> > > But we will defer that work until after this transition.
> > >
> > > Logistics
> > > =========
> > >
> > > We can prepare much of the system in advance (as we have for the hosting
> > > system on opendev.org), but the actual transition and renaming of the
> > > Gerrit server will need to happen at once during an outage window.  We
> > > need to schedule that outage and begin preparing for it.
> > >
> > > Since all of the project git URLs are going to change (to replace
> > > git.openstack.org with opendev.org and review.openstack.org with
> > > review.opendev.org), we can additionally take the opportunity to
> > > reorganize projects into different organizations.
> > >
> > > For example, during the transition we will rename Zuul, and it's
> > > associated projects, from the "openstack-infra" org to "zuul".  So their
> > > new names will be "zuul/zuul", "zuul/nodepool", etc.
> > >
> > > This is an excellent time for the rest of the OpenStack Foundation
> > > pilot projects to do the same.
> > >
> > > If the OpenStack project desires this, it would also be a good time to
> > > move unofficial projects out of the openstack/ namespace.
> > >
> > > Therefore, we need your help:
> > >
> > > Action Items
> > > ============
> > >
> > > We need each of the following projects:
> > >
> > >   * OpenStack
> > >   * Airship
> > >   * StarlingX
> > >   * Zuul
> > >
> > > To nominate a single point of contact to work with us on the transition.
> > > It would be helpful for that person to attend the next (and possibly
> > > next several) openstack infra team meetings in IRC [3].  We will work
> > > with those people on scheduling the transition, as well as finalizing
> > > the list of projects which should be renamed as part of the transition.
> > >
> > > If you manage an unofficial project and would like to take the
> > > opportunity to move or rename your project, please add it to this
> > > ethercalc[4].
> > >
> > > [1]
> > > http://lists.openstack.org/pipermail/openstack-dev/2018-November/136403.html
> > > [2]
> > > http://specs.openstack.org/openstack-infra/infra-specs/specs/opendev-gerrit.html
> > > [3] http://eavesdrop.openstack.org/#Project_Infrastructure_Team_Meeting
> > > [4] https://ethercalc.openstack.org/opendev-transition
> > >
> > >
> >
> > We've made good progress in preparing this change and are still on
> > track to do this Friday April 19, 2019.  Our project liasons have been
> > drawing up lists of projects to rename during the outage. One big thing
> > to keep in mind is unofficial OpenStack projects will no longer be in
> > the "openstack" namespace.  They will be placed in the 'x/' namespace
> > instead which intends to indicate no endorsement or special ownership.
> >
> > One side effect of this change (as noted in Jim's earlier email) is
> > that we will stop replicating projects that move out of the openstack
> > namespace. Projects that wish to be replicated to Github or anywhere
> > else they like can do so following the steps that David Moreau-Simard
> > put together for us here [5].
> >
> > This transition is likely to be a bit bumpy particularly at the start.
> > We'll be around after the transition to help fix unexpected errors and
> > are likely to spend a fair bit of time at the PTG improving things as
> > well.
> >
> > Finally, to be extra clear, we intend to put http redirects in place so
> > that all your old http(s) urls continue to work.  Fungi has set this up
> > for testing with details here [6] if you would like to ensure your urls
> > redirect properly.
> >
> > [5]
> > http://lists.openstack.org/pipermail/openstack-discuss/2019-April/005007.html
> > [6]
> > http://lists.openstack.org/pipermail/openstack-discuss/2019-April/004921.html
>
> The infra/OpenDev team continues to make good progress towards this transition and plans to perform the transition on April 19, 2019 as previously scheduled.  We will begin the transition at 15:00UTC and users should plan for intermittent Gerrit and git repo outages through the day. We expect most of those will be closer to 15:00UTC than 23:00UTC.
>
> Fungi has generated a master list of project renames for the openstack namespaces: http://paste.openstack.org/show/749402/. If you have a moment please quickly review these planned renames for any obvious errors or issues.

i guess networking-l2gw-tempest-plugin should go to the same namespace
with networking-l2gw.

>
> For the airship, starlingx, and zuul repo renames the repositories listed at git.airshipit.org, git.starlingx.io, and git.zuul-ci.org were used placing repos in airship/, starlingx/ and zuul/ namespaces. Any repo name prefix (like stx- and airship-) is dropped.
>
> As always we are happy to answer any questions you might have or address any concerns. Feel free to reach out.
> Thank you for your patience,
> Clark
>