== tl;dr == On June 29th git.wikimedia.org (running Gitblit) will redirect all requests to Phabricator. The vast majority of requests will be correctly redirected.
== What is happening? == In an effort to reduce the maintenance burden of redudant services we will be removing git.wikimedia.org. The software that has been serving git.wikimedia.org, Gitblit, has given our Operations team many headaches over the years[0] and now that we have all repositories hosted in Phabricator[1] there is no reason to keep Gitblit around. Phabricator's Diffusion (the name of the code browser) provides the needed functionality that Gitblit served (mostly viewing/browsing repositories, something which Gerrit does not do).
== When will it happen? == June 29th https://wikitech.wikimedia.org/wiki/Deployments#deploycal-item-20160629T1600
== How could this affect me? == Potentially, you use an unpopular (in the sense of not used often) feature of Gitblit that is not supported in Diffusion. This should be unlikely.
Potentially, a link you follow that pointed to somewhere on git.wikimedia.org will not redirect correctly. This is also unlikely as we (mostly @Danny_B and @Paladox) took great care to update many mediawiki.org templates along with providing very robust redirect rules[2]. If you find one that isn't working, please let us know (along with the original url and, if possible, the desired target in Diffusion).
One known issue to call out: Diffusion does not list commits by person. However Differential (the code-review tool) does this (not just for new commits). There is no easy/maintainable way to redirect those, unfortunately.
Something else broken? Please file a task in Phabricator in the #Diffusion project[3].
Thanks,
Greg, on behalf of WMF Release Engineering (and all the volunteers who helped along the way (and Ops!))
[0] eg: https://phabricator.wikimedia.org/T73974 [1] https://phabricator.wikimedia.org/diffusion/ [2] https://phabricator.wikimedia.org/T137224 [3] https://phabricator.wikimedia.org/project/profile/53/
There is a comparison, to understand what changes: https://www.mediawiki.org/wiki/Phabricator/versus_Gitblit#Diffusion_vs._Gitb...
Nemo
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