Deployments/Train

Deployments
Jump to current event Deployment calendar Long-term calendar 1.40 Roadmap Train overview Archive Blocking tasks (Current task) Holding the train 🚨 Emergencies How to deploy code Heterogeneous deployment Train deploys Backport windows How to deploy backports Backport vs Train vs Special Window Train vs Backport Special Windows Backport windows

Each week the Release Engineering Team deploys between 150–950 patches to the Wikimedia Foundation's 978 Wikimedia production wikis

A production deployment at Wikimedia is composed of:

• 198 repositories
  • 188 extensions
  • 8 skins
  • mediawiki/vendor
  • mediawiki/core

This is a process called the Deployment Train

Current week

• Train status: https://versions.toolforge.org/
• Train blocker task: https://train-blockers.toolforge.org/

Typical Deployment Week

See also MediaWiki 1.39/Roadmap on mediawiki.org

Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
		Deploy to group 0	Deploy to group 1	Deploy to group 2

Tuesday

Each Tuesday a Release Engineering team member cuts a new branch of all 198 repositories in a Wikimedia Production deployment. The branch is always prefixed with wmf/ and then a version number. For example: wmf/1.37.0-wmf.1.

The train conductor deploys that to Group0 wikis (see dblists/group0.dblist). This group includes:

• www.mediawiki.org (mediawikiwiki)
• test.wikipedia.org (testwiki)
• test.wikidata.org (testwikidatawiki)
• office.wikimedia.org (officewiki)
• all closed wikis

Wednesday

On Wednesday Release Engineering leads a log triage session to find and file any new errors.

Following the log triage, the train conductor for the week makes a go/no-go decision to deploy to Group1 wikis.

Group1 is non-Wikipedias, see dblists/group1.dblist.

Group1 includes:

• www.wikidata.org (wikidatawiki)
• *.wiktionary.org (all Wiktionary sites)
• *.wikisource.org (all Wikisource sites)
• *.wikinews.org (all Wikinews sites)
• *.wikibooks.org (all Wikibooks sites)
• *.wikiquote.org (all Wikiquote sites)
• *.wikivoyage.org (all Wikivoyage sites)
• *.wikiversity.org (all Wikiversity sites)
• commons.wikimedia.org (Wikimedia Commons)
• meta.wikimedia.org (Meta-Wiki)
• incubator.wikimedia.org (Incubator)
• ca.wikipedia.org (Catalan Wikipedia)
• he.wikipedia.org (Hebrew Wikipedia)
• it.wikipedia.org (Italian Wikipedia)
• test2.wikipedia.org (test2wiki)
• and others…

Thursday

If no blockers are found, the train conductor pushes code to all other Wikipedias, see dblists/group2.dblist.

This includes en.wikipedia.org (English Wikipedia).