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 February 29th

• Week of:
  • nothing yet

By day

Time	Component	Deployer	Changes
Monday, February 29
16:00–17:00 UTC # 08:00–09:00 PST	Morning SWAT (Max 8 patches)	Brad (anomie), Chad (ostriches), Tyler (thcipriani), or Mark (marktraceur)	aude [config] 271971 (deploy commands) Update Wikidata property blacklist. matt_flaschen [core] [1.27.0-wmf.14] 273535 (deploy commands) Add TitleMoveStarting, mirroring TitleMoveCompleting [Flow] [1.27.0-wmf.14] 273536 (deploy commands) Fix board move DB issue using new hook TitleMoveStarting (deploy after core change) [config] 273836 (deploy commands) Disable thank-you-edit notifications while we figure out why they're spamming people mafk [config] 272992 (deploy commands) - Import sources for hi.wikiquote. [config] 273580 (deploy commands) - Clear throttle.php from expired events + example config. jzerebecki [wmf.14] 273917 (deploy commands) - Update Wikibase: Fix over-encoding of expanded URLs 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, March 01
00:00–01:00 UTC # (Mon) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Roan (RoanKattouw) [config] 246171 (deploy commands) Enable emailuser notifications by default on hewiki [wmf.14] 273981 (deploy commands) Add debug logging for thank-you-edit notifications Nathaniel Schaaf (schana) [config] 274005 (deploy commands) Change rate for reader segmentation survey 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)	Luca Toscano (elukey) [config] 273488 (deploy commands) - Add kafka1012 back to the mediawiki pool. Luke081515 [config] 273776 (deploy commands) - Correct one Domain at $wgCopyUploadsDomains [config] 273828 (deploy commands) - Enable rollbacker and suppressredirect group at cewiki _joe_ [config] 266512 (deploy commands) - Add references to wmfServices for Cirrusearch [config] 266513 (deploy commands) - Use wmfMasterDatacenter for picking the master redis config [config] 266514 (deploy commands) - Configure redis LockManager in both DCs, use the master everywhere 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_), Jaime (jynus)	yurik 274094 (deploy commands) Marko (mobrovac) 273974 (deploy commands) Add purged_cache_control config variable Chad (ostriches) 273106 (deploy commands) minor pep8 fixes to postgresql.py
18:00–19:00 UTC # 10:00–11:00 PST	Services – Graphoid / Parsoid / OCG / Citoid	Yuri (yurik), Gabriel (gwicke), C.Scott (cscott), Arlo (arlolra), Subbu (subbu)	See Graphoid, mw:Parsoid/Deployments, OCG/Deployments
20:00–22:00 UTC # 12:00–14:00 PST	MediaWiki train	Chad (ostriches)	1.27 schedule group0 1.27.0-wmf.14->1.27.0-wmf.15 group1 1.27.0-wmf.14 group2 1.27.0-wmf.14 group0 to 1.27.0-wmf.15 test wikis and mediawiki.org Blockers: task T127565
Wednesday, March 02
00:00–01:00 UTC # (Tue) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Gergő (tgr) [config] 271932 (deploy commands) disable Gather on enwiki James_F [config] 274129 (deploy commands) Enable VisualEditor Single Edit Tab on group0 wikis [config] 272926 (deploy commands) Enable VisualEditor state transitioning for accounts on the German Wikipedia Julien (jgirault) [config] 274316 (deploy commands) Update all portals stats (wikipedia.org and sister portals) 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
20:00–22:00 UTC # 12:00–14:00 PST	MediaWiki train	Chad (ostriches)	1.27 schedule group0 1.27.0-wmf.15 group1 1.27.0-wmf.14->1.27.0-wmf.15 group2 1.27.0-wmf.14 group1 to 1.27.0-wmf.15 All non-Wikipedia sites (Wiktionary, Wikisource, Wikinews, Wikibooks, Wikiquote, Wikiversity, etc) Catalan and Hebrew Wikipedias Blockers: task T127565
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
Thursday, March 03
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
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), 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_), Jaime (jynus)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
18:00–19:00 UTC # 10:00–11:00 PST	Services – Graphoid / Parsoid / OCG / Citoid	Yuri (yurik), Gabriel (gwicke), C.Scott (cscott), Arlo (arlolra), Subbu (subbu)	See Graphoid, mw:Parsoid/Deployments, OCG/Deployments
20:00–22:00 UTC # 12:00–14:00 PST	MediaWiki train	Chad (ostriches)	1.27 schedule group0 1.27.0-wmf.15 group1 1.27.0-wmf.15 group2 1.27.0-wmf.14->1.27.0-wmf.15 group2 to 1.27.0-wmf.15 All Wikipedias Blockers: task T127565
Friday, March 04
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 March 7th

• Week of:
  • nothing yet

By day

Time	Component	Deployer	Changes
Monday, March 07
16:00–17:00 UTC # 08:00–09:00 PST	Morning SWAT (Max 8 patches)	Brad (anomie), Chad (ostriches), Tyler (thcipriani), or Mark (marktraceur)	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, March 08
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)	James_F [config] 271712 (deploy commands) Enable VisualEditor for new accounts on the German Wikipedia 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_), Jaime (jynus)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
18:00–19:00 UTC # 10:00–11:00 PST	Services – Graphoid / Parsoid / OCG / Citoid	Yuri (yurik), Gabriel (gwicke), C.Scott (cscott), Arlo (arlolra), Subbu (subbu)	See Graphoid, mw:Parsoid/Deployments, OCG/Deployments
20:00–22:00 UTC # 12:00–14:00 PST	MediaWiki train	Mukunda (twentyafterfour)	1.27 schedule group0 1.27.0-wmf.15->1.27.0-wmf.16 group1 1.27.0-wmf.15 group2 1.27.0-wmf.15 group0 to 1.27.0-wmf.16 test wikis and mediawiki.org Blockers: task T128218
Wednesday, March 09
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
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
20:00–22:00 UTC # 12:00–14:00 PST	MediaWiki train	Mukunda (twentyafterfour)	1.27 schedule group0 1.27.0-wmf.16 group1 1.27.0-wmf.15->1.27.0-wmf.16 group2 1.27.0-wmf.15 group1 to 1.27.0-wmf.16 All non-Wikipedia sites (Wiktionary, Wikisource, Wikinews, Wikibooks, Wikiquote, Wikiversity, etc) Catalan and Hebrew Wikipedias Blockers: task T128218
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
Thursday, March 10
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
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), 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)	Moritz (moritzm), mutante (mutante)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
18:00–19:00 UTC # 10:00–11:00 PST	Services – Graphoid / Parsoid / OCG / Citoid	Yuri (yurik), Gabriel (gwicke), C.Scott (cscott), Arlo (arlolra), Subbu (subbu)	See Graphoid, mw:Parsoid/Deployments, OCG/Deployments
20:00–22:00 UTC # 12:00–14:00 PST	MediaWiki train	Mukunda (twentyafterfour)	1.27 schedule group0 1.27.0-wmf.16 group1 1.27.0-wmf.16 group2 1.27.0-wmf.15->1.27.0-wmf.16 group2 to 1.27.0-wmf.16 All Wikipedias Blockers: task T128218
Friday, March 11
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

15 March

James_F

• [config] 271712 (deploy commands) Enable VisualEditor for IP users on the German Wikipedia

Long term callouts

Wikidata-related (exact times to be scheduled, and some of these could be in swat):

• Enable ArticlePlaceholder extension on test.wikipedia, test2 + testwikidata (February 9)
• Formula data type, enable on test.wikidata (February 2), and on Wikidata (February 9)
• Other projects sidebar (February 16)
• Enable external identifier data type (February 16)
• Enable Wikibase Client on Wikiversity (February 23)

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 arbitrary access on commons. phab:T49930

Deployment trains

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

Recently completed

For older deployments, please see the /Archive.