Notes:
  • Ask for a little more time than what you think you'll need for deployment and testing; you never know what issues may come up and slow you down.
    • Generally, we have found one hour 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 are for pushing out simple and low-risk changes (as assessed by you, SWAT team, and the Release Manager). They happen at:
    • 06:00, 11:00 and 16:00 Pacific on Mondays and Thursdays
    • 06:00 and 16:00 Pacific on Tuesdays
    • 06:00, 10:00 and 16:00 Pacific on Wednesdays

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 projects (Wikipedia, Wiktionary, Wikiversity, Wikimedia Commons, etc.).

Deployments
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.
Long running tasks/scripts
While not strictly a deployment, performing long running (>1 hour) tasks (eg: migration scripts) can encounter issues when code is updated while a script is being run. For this reason it is required to add an entry in the calendar for the task with a window that accounts for the anticipated start time and estimated length for the task.
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.
Something went wrong‽ (see also Incident response)

Near-term

NOTE: You can also subscribe to the "WMF Deployments" google calendar by adding <wikimedia.org_rudis09ii2mm5fk4hgdjeh1u64@group.calendar.google.com>. This does not always get one-off windows that are noted below. This wiki page is the canonical deployment schedule and any differences with the google calendar are to be interpreted as the google calendar being incorrect.

Week of January 20

Time Component Deployer Changes

Monday, January 20

 UTC #
(Sun)  PST
Martin Luther King Jr. Day No deploys

Tuesday, January 21

 UTC #
 PST
European Mid-day SWAT
(Max 6 patches)
Amir (Amir1), Lucas (Lucas_WMDE), Adam (awight), Martin (Urbanecm) Amir Sarabadani (Amir1)
  • [config] 562578 Set useEntitySourceBasedFederation to true for Wikidata

Requesting Developer (irc-nickname)

  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-01-21-12

 UTC #
 PST
Puppet SWAT
(Max 6 patches)
Filippo (godog), Giuseppe (_joe_) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change
 UTC #
 PST
ServicesGraphoid / Parsoid / Citoid / ORES C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Aaron (halfak)), Andy (accraze) See Graphoid, mw:Parsoid/Deployments
 UTC #
 PST
Pre MediaWiki train sanity break No Deploys
 UTC #
 PST
Mediawiki train - American Version brennen, twentyafterfour 1.35 schedule
group0 1.35.0-wmf.15->1.35.0-wmf.16
group1 1.35.0-wmf.15
group2 1.35.0-wmf.15

Wednesday, January 22

 UTC #
(Tue)  PST
Evening SWAT
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) RoanKattouw
  • [wmf.15] 565695 Fix suggested edits drawer on mobile
  • [wmf.15] 565697 Add task topics and scores to instrumentation
  • [config] 565398 Enable topics in suggested edits on GrowthExperiments homepage

Requesting Developer (irc-nickname)

  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-01-22-00

 UTC #
 PST
European Mid-day SWAT
(Max 6 patches)
Amir (Amir1), Lucas (Lucas_WMDE), Adam (awight), Martin (Urbanecm) Amir Sarabadani (Amir1)
  • [wmf.16] 566505 Better dependency injection of base URI in ConstraintParameterParser
  • [wmf.15] 566504 Better dependency injection of base URI in ConstraintParameterParser
  • [config] (Needs the two above patches first) 566506 Revert "Revert "Set useEntitySourceBasedFederation to true for Wikidata""

Requesting Developer (irc-nickname)

  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-01-22-12

 UTC #
 PST
Morning SWAT
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Zoranzoki21
  • [config] 557439 Add minerva custom log for la.wiki
  • [config] 565723 Add vzg-easydb.gbv.de to the wgCopyUploadsDomains

RoanKattouw

  • [wmf.15] 566378, 566381, 566382 Special page aliases for GrowthExperiments for uk, hu, hy
  • [config] 565439 Enable UnderstandingFirstDay on ukwiki, huwiki, hywiki
  • [config] 565442, 565443, 565447 Enable help panel on ukwiki, huwiki, hywiki
  • [config] 565448, 565449, 565450 Enable homepage on ukwiki, huwiki, hywiki

David Barratt (davidwbarratt)

  • [wmf.15] 566574 Remove temporary partial block banner, added in 01fcc09234
  • [wmf.16] 566575 Remove temporary partial block banner, added in 01fcc09234

Requesting Developer (irc-nickname)

  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-01-22-19

 UTC #
 PST
Mediawiki train - American Version brennen, twentyafterfour 1.35 schedule
group0 1.35.0-wmf.16
group1 1.35.0-wmf.15->1.35.0-wmf.16
group2 1.35.0-wmf.15
 UTC #
 PST
ServicesGraphoid / Parsoid / Citoid / ORES C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Aaron (halfak)), Andy (accraze) See Graphoid, mw:Parsoid/Deployments

Thursday, January 23

 UTC #
(Wed)  PST
Evening SWAT
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-01-23-00

 UTC #
(Wed)  PST
Phabricator update Mukunda (twentyafterfour) HOLD: Window to update phabricator.wikimedia.org
 UTC #
 PST
European Mid-day SWAT
(Max 6 patches)
Amir (Amir1), Lucas (Lucas_WMDE), Adam (awight), Martin (Urbanecm) Kartik Mistry (kart_)
  • 566123 Move CX out of beta for Afrikaans, Icelandic, Latvian and Nepali Wikipedias

Amir Sarabadani (Amir1)

  • [config] 566701 Set useEntitySourceBasedFederation to true for Wikidata

Requesting Developer (irc-nickname)

  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-01-23-12

 UTC #
 PST
Puppet SWAT
(Max 6 patches)
Filippo (godog), Giuseppe (_joe_) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change
 UTC #
 PST
ServicesGraphoid / Parsoid / Citoid / ORES C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Aaron (halfak)), Andy (accraze) See Graphoid, mw:Parsoid/Deployments
 UTC #
 PST
Morning SWAT
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Matthias (matthiasmullie) & Cormac (cparle)
  • [config] 416730 Add 3d-patents page to wgForceUIMsgAsContentMsg

stephanebisson

  • [wmf.16] 566600 InukaPageView: update schema version

Requesting Developer (irc-nickname)

  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-01-23-19

 UTC #
 PST
Mediawiki train - American Version brennen, twentyafterfour 1.35 schedule
group0 1.35.0-wmf.16
group1 1.35.0-wmf.16
group2 1.35.0-wmf.15->1.35.0-wmf.16

Friday, January 24

 UTC #
(Thu)  PST
Evening SWAT
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Andrew (AndyRussG)
  • [wmf.16] 566563 Reset hide shouldHide,reason private variables when setting new category

arlolra

  • [config] 564805 Bump Parsoid/PHP cluster memory_limit again

Requesting Developer (irc-nickname)

  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-01-24-00

Week of January 27

  • No deploys: Wikimedia All Hands

Week of February 03

Time Component Deployer Changes

Monday, February 03

 UTC #
 PST
Wikimedia Portals Update Jan Drewniak (jan_drewniak) Weekly window for the portals page: https://www.wikipedia.org/
 UTC #
 PST
European Mid-day SWAT
(Max 6 patches)
Amir (Amir1), Lucas (Lucas_WMDE), Adam (awight), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-02-03-12

 UTC #
 PST
Wikidata Query Service weekly deploy Guillaume (gehel), Mathew (onimisionipe) ...
 UTC #
 PST
Morning SWAT
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-02-03-19

 UTC #
 PST
ServicesGraphoid / Parsoid / Citoid / ORES C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Aaron (halfak)), Andy (accraze) See Graphoid, mw:Parsoid/Deployments
 UTC #
 PST
Weekly Security deployment window Sam (Reedy), Scott (sbassett) Held deployment window for Security-team related deploys.

Tuesday, February 04

 UTC #
(Mon)  PST
Evening SWAT
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-02-04-00

 UTC #
 PST
European Mid-day SWAT
(Max 6 patches)
Amir (Amir1), Lucas (Lucas_WMDE), Adam (awight), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-02-04-12

 UTC #
 PST
Puppet SWAT
(Max 6 patches)
Filippo (godog), Giuseppe (_joe_) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change
 UTC #
 PST
ServicesGraphoid / Parsoid / Citoid / ORES C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Aaron (halfak)), Andy (accraze) See Graphoid, mw:Parsoid/Deployments
 UTC #
 PST
Pre MediaWiki train sanity break No Deploys
 UTC #
 PST
Mediawiki train - American Version Mukunda (twentyafterfour), Dan (marxarelli) 1.35 schedule
group0 1.35.0-wmf.16->1.35.0-wmf.18
group1 1.35.0-wmf.16
group2 1.35.0-wmf.16

Wednesday, February 05

 UTC #
(Tue)  PST
Evening SWAT
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-02-05-00

 UTC #
 PST
European Mid-day SWAT
(Max 6 patches)
Amir (Amir1), Lucas (Lucas_WMDE), Adam (awight), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-02-05-12

 UTC #
 PST
Morning SWAT
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-02-05-19

 UTC #
 PST
Mediawiki train - American Version Mukunda (twentyafterfour), Dan (marxarelli) 1.35 schedule
group0 1.35.0-wmf.18
group1 1.35.0-wmf.16->1.35.0-wmf.18
group2 1.35.0-wmf.16
 UTC #
 PST
ServicesGraphoid / Parsoid / Citoid / ORES C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Aaron (halfak)), Andy (accraze) See Graphoid, mw:Parsoid/Deployments

Thursday, February 06

 UTC #
(Wed)  PST
Evening SWAT
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-02-06-00

 UTC #
(Wed)  PST
Phabricator update Mukunda (twentyafterfour) HOLD: Window to update phabricator.wikimedia.org
 UTC #
 PST
European Mid-day SWAT
(Max 6 patches)
Amir (Amir1), Lucas (Lucas_WMDE), Adam (awight), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-02-06-12

 UTC #
 PST
Puppet SWAT
(Max 6 patches)
Filippo (godog), Giuseppe (_joe_) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change
 UTC #
 PST
ServicesGraphoid / Parsoid / Citoid / ORES C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Aaron (halfak)), Andy (accraze) See Graphoid, mw:Parsoid/Deployments
 UTC #
 PST
Morning SWAT
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-02-06-19

 UTC #
 PST
Mediawiki train - American Version Mukunda (twentyafterfour), Dan (marxarelli) 1.35 schedule
group0 1.35.0-wmf.18
group1 1.35.0-wmf.18
group2 1.35.0-wmf.16->1.35.0-wmf.18

Friday, February 07

 UTC #
(Thu)  PST
Evening SWAT
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change

Gerrit hashtag: swat-2020-02-07-00


Upcoming events

  • 17 February (Presidents' Day): No deploys
  • 9 March (US DST switchover + 1 day): No deploys
  • 25 May (Memorial Day): No deploys

Past deployments