Deployments

Some notes about the deployment windows

• It is good to ask for a little more time than what you think you'll need to do all of the deployment and testing; you never know what issues will come up and slow you down.
  • Generally, we have found one hour windows to be a good size for most things.
• Deployment windows are 'pinned' to the time in San Francisco and thus the UTC time will change due to the United States observance of Daylight Savings Time as appropriate.
• SWAT deploys happen twice daily (8am and 4pm Pacific) and are for pushing out simple, quick, and low risk changes (as assessed by you, members of the SWAT team, and the Release Manager).

For detailed instructions on how to actually deploy code to the Wikimedia servers, see How to deploy code.

This page tracks planned deployments of software to the Wikimedia Foundation servers that host the various Wikimedia project wikis (Wikipedias, Wiktionaries, Wikiversities, Wikimedia Commons, etc.).

Cadence

The Wikimedia Foundation currently follows a one-week deploy cadence. This means that there is one week between updates to any one Wikimedia project site wiki (excluding urgent fixes, of course).

Scheduling

To schedule a deploy window, or if you see a potential conflict with your upcoming deployment, please e-mail Greg Grossmeier.

Inclusion criteria

See the list at Inclusion criteria for the kinds of changes that require scheduling here.

Communicating

• Every major or new feature deployment should be announced on the Wikimedia blog and/or Tech News (use the "user-notice" tag on Phabricator) and/or global on-wiki delivery. For routine and maintenance deployments, listing your change here is enough.
• Changes that are liable to affect site performance or infrastructure should be announced on the ops mailing list. This includes anything that alters caching behavior, introduces cookies, substantially increases the static asset payload, or adds new and complicated query patterns.

Near-term

Week of December 14th

• Week of:
  • nothing yet

By day

Time	Component	Deployer	Changes
Monday, December 14
16:00–17:00 UTC # 08:00–09:00 PST	Morning SWAT (Max 8 patches)	Brad (anomie), Chad (ostriches), Tyler (thcipriani), Mark (marktraceur), or Alex (Krenair)	Bernd, Michael (bearND, mdholloway) gerrit:258502 Roll out RESTBase usage to Android Beta app: 55% Done(ish) gerrit:258985 (backport to .8) revi (revi) Done gerrit:258667 noindex for user namespace in kowiki Bartosz Dziewoński (MatmaRex) Done [1.27.0-wmf.8] [extensions/UploadWizard] Cherry-pick of gerrit:258767 mw.UploadWizardDetails: Don't fail when 'description' is given, but 'descriptionlang' isn't Amir E. Aharoni (aharoni) Done gerrit:258776 [extensions/ContentTranslation] Cherry-pick of gerrit:258737 Fix check for JWT David Causse (dcausse) N Not done [config] 255135 (deploy commands) Use event-schemas repository for avro schemas (note: new git submodule) Requesting Developer (irc-nickname) Gerrit link to backport or config change
21:00–22:00 UTC # 13:00–14:00 PST	Services – Parsoid / OCG / Citoid / Mobileapps / …	Gabriel (gwicke), C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Bernd (bearND) and Michael (mdholloway)	See mw:Parsoid/Deployments, OCG/Deployments, Mobileapps deployments
Tuesday, December 15
00:00–01:00 UTC # (Mon) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	bd808 Done 259188 (deploy commands) Mobile API: Use page_touched for cache invalidation aude Done 257397 (deploy commands) Update Wikidata property suggester blacklist Done 258968 (deploy commands) Set formatterUrlProperty setting for Wikibase Dereckson N Not done [config] 258444 (deploy commands) Template editor group on hi.wikipedia (T120342) N Not done [config] 258441 (deploy commands) Import sources on gu.wikipedia (T120346) N Not done [config] 258474 (deploy commands) Allow sysop to grant and revoke transwiki on gu.wikipedia (T120346) N Not done [config] 258436 (deploy commands) Namespace configuration on pa.wikipedia (T120936) N Not done [config] 257868 (deploy commands) Enable global AbuseFilter at French Wikipedia (T120568) N Not done [config] 258672 (deploy commands) Enable NewUserMessage on ps.wikipedia (T121132) Erik B (ebernhardson) Done [config] 255135 (deploy commands) Use event-schemas repository for avro schemas (note: new git submodule) yurik Done [config] 259189 (deploy commands) Enable gzip graph compression in labs, but keep it off in prod Requesting Developer (irc-nickname) Gerrit link to backport or config change
12:00–13:00 UTC # 04:00–05:00 PST	Content Translation server service-runner migration	Kartik Mistry (kart_), Alex Kosiaris (akosiaris), Marko (mobrovac)	Kartik Mistry (kart_) [cxserver] 244145 (deploy commands) Service-runner migration [Puppet] 250910 (deploy commands) service-runner migration for cxserver
16:00–17:00 UTC # 08:00–09:00 PST	Morning SWAT (Max 8 patches)	Brad (anomie), Chad (ostriches), Tyler (thcipriani), Mark (marktraceur), or Alex (Krenair)	Bartosz Dziewoński (MatmaRex) Done [config] 259258 (deploy commands) Enable cross-wiki upload A/B test on English-language wikis James_F Done [config] 258409 (deploy commands) BetaFeatures: Update language and dates of 'retirement' Done [config] 258403 (deploy commands) VisualEditor: On single edit tab wikis, set the default editor appropriately Done [config] 259039 (deploy commands) VisualEditor: Enable single edit tab mode on test2wiki — task T121421 Done [config] 259041 (deploy commands) VisualEditor: VisualEditor: Centralise feedback from test2wiki to MediaWiki.org Requesting Developer (irc-nickname) Gerrit link to backport or config change Julien (jgirault), Jan (jan_drewniak) Done [config] 259176 (deploy commands) Bump portals to master
19:00–21:00 UTC # 11:00–13:00 PST	MediaWiki train	Tyler (thcipriani)	1.27 schedule group0 1.27.0-wmf.8->1.27.0-wmf.9 group1 1.27.0-wmf.8 group2 1.27.0-wmf.8 group0 to 1.27.0-wmf.9 test wikis and mediawiki.org
23:00–00:00 UTC # 15:00–16:00 PST	Wikidata	aude	Enable Wikidata data access for meta-wiki phab:T117524
Wednesday, December 16
00:00–01:00 UTC # (Tue) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	csteipp (csteipp) gerrit:258387 Enforce staff password policy legoktm 259425 (deploy commands) Fix merging of $wgExtractsRemoveClasses post-extension.json yurik 259427 (deploy commands) Fixed sending treat-as-trusted header Requesting Developer (irc-nickname) Gerrit link to backport or config change
16:00–17:00 UTC # 08:00–09:00 PST	Morning SWAT (Max 8 patches)	Brad (anomie), Chad (ostriches), Tyler (thcipriani), Mark (marktraceur), or Alex (Krenair)	yurik [config] 259448 (deploy commands) disable Graph namespace on mediawiki.org and meta wiki. Requesting Developer (irc-nickname) Gerrit link to backport or config change
19:00–21:00 UTC # 11:00–13:00 PST	MediaWiki train	Tyler (thcipriani)	1.27 schedule group0 1.27.0-wmf.9 group1 1.27.0-wmf.8->1.27.0-wmf.9 group2 1.27.0-wmf.8 group1 to 1.27.0-wmf.9 All non-Wikipedia sites (Wiktionary, Wikisource, Wikinews, Wikibooks, Wikiquote, Wikiversity, etc) Catalan and Hebrew Wikipedias
21:00–22:00 UTC # 13:00–14:00 PST	Services – Parsoid / OCG / Citoid / Mobileapps / …	Gabriel (gwicke), C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Bernd (bearND) and Michael (mdholloway)	See mw:Parsoid/Deployments, OCG/Deployments, Mobileapps deployments
23:00–00:00 UTC # 15:00–16:00 PST	Graph ext	yurik	Updating graph extension protocol issues
Thursday, December 17
00:00–01:00 UTC # (Wed) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	csteipp (csteipp) 259436 (deploy commands) Password policy for sysadmin group Requesting Developer (irc-nickname) Gerrit link to backport or config change
01:00–02:00 UTC # (Wed) 17:00–18:00 PST	Phabricator update	Mukunda (twentyafterfour)	HOLD: Window to update phabricator.wikimedia.org
16:00–17:00 UTC # 08:00–09:00 PST	Morning SWAT (Max 8 patches)	Brad (anomie), Chad (ostriches), Tyler (thcipriani), or Mark (marktraceur)	Bartosz Dziewoński (MatmaRex) [config] ???? Enable cross-wiki upload A/B test in additional languages Requesting Developer (irc-nickname) Gerrit link to backport or config change
17:00–18:00 UTC # 09:00–10:00 PST	Puppet SWAT (Max 8 patches)	Moritz (moritzm), mutante (mutante)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
19:00–21:00 UTC # 11:00–13:00 PST	MediaWiki train	Tyler (thcipriani)	1.27 schedule group0 1.27.0-wmf.9 group1 1.27.0-wmf.9 group2 1.27.0-wmf.8->1.27.0-wmf.9 group2 to 1.27.0-wmf.9 All Wikipedias
Friday, December 18
00:00–01:00 UTC # (Thu) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Requesting Developer (irc-nickname) Gerrit link to backport or config change

Week of December 21st

• No normal deploys
• High Priority SWATs only
  • "High Priority" means security and data loss. Anything else needs prior approval from at least Katie (K4-713) or Chad Horohoe (ostriches).
• Short week because of Christmas on Friday (aka Thursday == "No deploys Friday")

By day

Time	Component	Deployer	Changes
Monday, December 21
16:00–17:00 UTC # 08:00–09:00 PST	Morning SWAT (Max 8 patches)	Brad (anomie), Chad (ostriches), Tyler (thcipriani), Mark (marktraceur), or Alex (Krenair)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Tuesday, December 22
00:00–01:00 UTC # (Mon) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
16:00–17:00 UTC # 08:00–09:00 PST	Morning SWAT (Max 8 patches)	Brad (anomie), Chad (ostriches), Tyler (thcipriani), Mark (marktraceur), or Alex (Krenair)	Bartosz Dziewoński (MatmaRex) Tentative: Multimedia cross-wiki upload A/B test end: phab:T120867 Requesting Developer (irc-nickname) Gerrit link to backport or config change
17:00–18:00 UTC # 09:00–10:00 PST	Puppet SWAT (Max 8 patches)	Alexandros (akosiaris) (code freeze week!)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Wednesday, December 23
00:00–01:00 UTC # (Tue) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
17:00–18:00 UTC # 09:00–10:00 PST	Puppet SWAT (Max 8 patches)	Alexandros (akosiaris) (code freeze week!)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Thursday, December 24
00:00–01:00 UTC # (Wed) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Requesting Developer (irc-nickname) Gerrit link to backport or config change

Week of December 28th

• No normal deploys
• High Priority SWATs only
  • "High Priority" means security and data loss. Anything else needs prior approval from at least Katie (K4-713) or Chad Horohoe (ostriches).
• Short week because of New Years Day on Friday (aka Thursday == "No deploys Friday")

By day

Time	Component	Deployer	Changes
Monday, December 28
16:00–17:00 UTC # 08:00–09:00 PST	Morning SWAT (Max 8 patches)	Brad (anomie), Chad (ostriches), Tyler (thcipriani), Mark (marktraceur), or Alex (Krenair)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Tuesday, December 29
00:00–01:00 UTC # (Mon) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
16:00–17:00 UTC # 08:00–09:00 PST	Morning SWAT (Max 8 patches)	Brad (anomie), Chad (ostriches), Tyler (thcipriani), Mark (marktraceur), or Alex (Krenair)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
17:00–18:00 UTC # 09:00–10:00 PST	Puppet SWAT (Max 8 patches)	Giuseppe (_joe_) (code freeze week!)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Wednesday, December 30
00:00–01:00 UTC # (Tue) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
17:00–18:00 UTC # 09:00–10:00 PST	Puppet SWAT (Max 8 patches)	Giuseppe (_joe_) (code freeze week!)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Thursday, December 31
00:00–01:00 UTC # (Wed) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Requesting Developer (irc-nickname) Gerrit link to backport or config change

Week of January 4th

• No normal deploys
• High Priority SWATs only
  • "High Priority" means security and data loss. Anything else needs prior approval from Greg (greg-g).

By day

Time	Component	Deployer	Changes
Monday, January 04
16:00–17:00 UTC # 08:00–09:00 PST	Morning SWAT (Max 8 patches)	Brad (anomie), Chad (ostriches), Tyler (thcipriani), Mark (marktraceur), or Alex (Krenair)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Tuesday, January 05
00:00–01:00 UTC # (Mon) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
16:00–17:00 UTC # 08:00–09:00 PST	Morning SWAT (Max 8 patches)	Brad (anomie), Chad (ostriches), Tyler (thcipriani), Mark (marktraceur), or Alex (Krenair)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
17:00–18:00 UTC # 09:00–10:00 PST	Puppet SWAT (Max 8 patches)	tba	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Wednesday, January 06
00:00–01:00 UTC # (Tue) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
17:00–18:00 UTC # 09:00–10:00 PST	Puppet SWAT (Max 8 patches)	tba	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Thursday, January 07
00:00–01:00 UTC # (Wed) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
17:00–18:00 UTC # 09:00–10:00 PST	Puppet SWAT (Max 8 patches)	tba	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Friday, January 08
00:00–01:00 UTC # (Thu) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Requesting Developer (irc-nickname) Gerrit link to backport or config change

Upcoming

End of year/beginning of new year 'code freezes'

"High Priority" means security and data loss. Anything else needs prior approval from at least Greg.

Fundraising code freeze exceptions must be coordinated with a member of the Fundraising Tech team, who are: cwd ejegg AndyRussG XenoRyet eileen awight K4-713

• Week of Nov 23rd: No normal deploys - high priority SWATs only (pre-approval from Greg needed) (Why: Thanksgiving)
• Week of Nov 30th: No normal deploys - high priority SWATs only (pre-approval from Greg and/or fr-tech needed) (Why: First of Dec Fundraising)
• Week of Dec 7th: Normal deploy week
• Week of Dec 14th: Normal deploy week
• Week of Dec 21st: No normal deploys - high priority SWATs only (and only on Monday and Tuesday) (pre-approval from Chad Horohoe and/or fr-tech needed) (Why: End of year Fundraising)
• Week of Dec 28th: No normal deploys - high priority SWATs only (pre-approval from Chad and/or fr-tech needed) (Why: End of year Fundraising)
• Week of Jan 4th: No normal deploys - high priority SWATs only (pre-approval from Greg needed) (Why: DevSummit16 and WMF All Hands)
• Week of Jan 11th: Resume normal deploy schedule

Long term callouts

Not scheduled yet

• Re-enable VisualEditor by default for all logged-out users of the English Wikipedia - phab:T90663
• Clean up skin user preferences in user_properties table on Wikimedia wikis – phab:T54778, use WikimediaMaintenance's cleanupSkinPrefs
• Deploy Sentry (JavaScript error logging) to production, configured to log only UploadWizard - phab:T91649
• Scrap VisualEditor providing its own edit tab, instead provide only one with switching, and memory of which editor the user used last – phab:T102398
• Enable Wikibase usage tracking + arbitrary access, in staged roll out to clients. phab:T49930
  • deploy to arbitrary access to commons, as well as Wikibooks and Wikinews when they get data access.

Deployment trains

• mw:MediaWiki 1.27/Roadmap
• mw:Wikidata deployment

Recently completed

For older deployments, please see the /Archive.