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 15th

• Week of:
  • nothing yet

By day

Time	Component	Deployer	Changes
Monday, February 15
00:00–23:00 UTC # (Sun) 16:00–15:00 PST	US Holiday	Everyone	US Holiday - No deploys
20:00–20:30 UTC # 12:00–12:30 PST	Phabricator Maintenance	MModell (twentyafterfour)	T125853
Tuesday, February 16
10:00–11:00 UTC # 02:00–03:00 PST	CXserver to Jessie/SCB	Kartik Mistry (kart_), Alexandros Kosiaris (akosiaris)	Migration of CXserver to Jessie/SCB (T121072).
11:00–12:00 UTC # 03:00–04:00 PST	Capiunto (testwiki test2wiki and testwikidata)	Marius (hoo)	Initial production (test wiki) deploy of Capiunto (T126399).
15:00–16:00 UTC # 07:00–08:00 PST	Wikidata configuration changes	Marius (hoo), Katie (aude)	. 263046 (deploy commands) Basic "Identifiers" statement section config for Wikidata phab:T123112 270701 (deploy commands) Replace the sidebar link to commons with the commons category phab:T126960 (No patch yet) Enable the other projects sidebar per default.
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)	Sébastien (Dereckson) [config] 270679 (deploy commands) Namespace configuration on ja.wikisource (task T126914) [config] 270556 (deploy commands) Don't index NS_USER on cs.wikipedia (task T125068) [config] 270456 (deploy commands) Remove *.ggpht.com from Wikimedia Commons upload whitelist (task T112500) Baha (bmansurov) [config] 270344 (deploy commands) Enable survey at reduced sample rate Kartik Mistry (kart_) [config] 267236 (deploy commands) CX: Remove ContentTranslationCorpora setting (default now) MarcoAurelio (mafk) [config] 270646 (deploy commands) Throttle limit lift for Nebraska Edit-a-thon (task T126939). [config] 270648 (deploy commands) Remove expired events from throttle exceptions. andrew (andrewbogott) Bring php-1.27.0-wmf.13/extensions/OpenStackManager back up to date
17:00–18:00 UTC # 09:00–10:00 PST	Puppet SWAT (Max 8 patches)	Filippo (godog), Ariel (apergos)	Marko (mobrovac) 270995 (deploy commands) Mathoid: Add the render_no_check config option 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	Antoine (hashar)	1.27 schedule group0 1.27.0-wmf.13->1.27.0-wmf.14 group1 1.27.0-wmf.13 group2 1.27.0-wmf.13 group0 to 1.27.0-wmf.14 test wikis and mediawiki.org Blockers: task T125597
Wednesday, February 17
00:00–01:00 UTC # (Tue) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Alex (Krenair) [wmf.13] 269457 (deploy commands) Revert "Re-add null appendix tab messages to extension.json" Baha (bmansurov) [config] 270985 (deploy commands) Enable survey at reduced sample rate AaronSchulz [config] 266603 (deploy commands) Set $wgCentralAuthUseSlaves on all wikis jdlrobson 271074 (deploy commands) aude [wmf13] 270981 (deploy commands) Fix Wikibase validator error handling in Math extension. [wmf14] 270980 (deploy commands) Fix Wikibase validator error handling in Math extension. (think this can just be merged and the code on tin would automatically get updated) anomie [wmf13] 271153 (deploy commands), [wmf14] 271155 (deploy commands) CentralAuth sessions should always be persistent 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)	MarcoAurelio (mafk) Done [config] 269970 (deploy commands) Namespace aliases for tawiki (task T126604). Done [config] 270645 (deploy commands) New userrights and configuration for cswiki (task T126931). Brad (anomie) Done [config] 264438 (deploy commands) Remove $wgMWOAuthGrantPermissions Done [config] 263000 (deploy commands) Undeploy Extension:ApiSandbox Requesting Developer (irc-nickname) Gerrit link to backport or config change
20:00–22:00 UTC # 12:00–14:00 PST	MediaWiki train	Antoine (hashar)	1.27 schedule group0 1.27.0-wmf.14 group1 1.27.0-wmf.13->1.27.0-wmf.14 group2 1.27.0-wmf.13 group1 to 1.27.0-wmf.14 All non-Wikipedia sites (Wiktionary, Wikisource, Wikinews, Wikibooks, Wikiquote, Wikiversity, etc) Catalan and Hebrew Wikipedias Blockers: task T125597
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, February 18
00:00–01:00 UTC # (Wed) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	matt_flaschen [Flow] [1.27.0-wmf.13] 271327 (deploy commands) Switch to BasicObjectMapper for TopicListEntry Baha (bmansurov) [config] 271443 (deploy commands) Enable the structured language overlay and increase the instrumentation rate
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	Antoine (hashar)	1.27 schedule group0 1.27.0-wmf.14 group1 1.27.0-wmf.14 group2 1.27.0-wmf.13->1.27.0-wmf.14 group2 to 1.27.0-wmf.14 All Wikipedias Blockers: task T125597
Friday, February 19
00:00–01:00 UTC # (Thu) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Roan (RoanKattouw) 265413 (deploy commands) Enable cross-wiki notifications beta feature on a few wikis Baha (bmansurov) [config] 270792 (deploy commands) Run the survey at normal rate Requesting Developer (irc-nickname) Gerrit link to backport or config change

Week of February 22nd

• Week of:
  • nothing yet

By day

Time	Component	Deployer	Changes
Monday, February 22
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
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, February 23
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)	Filippo (godog), Ariel (apergos)	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	Antoine (hashar)	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 T127086
Wednesday, February 24
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	Antoine (hashar)	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 T127086
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, February 25
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	Antoine (hashar)	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 T127086
Friday, February 26
00:00–01:00 UTC # (Thu) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Roan (RoanKattouw) 265413 (deploy commands) Enable cross-wiki notifications beta feature on a few wikis Requesting Developer (irc-nickname) Gerrit link to backport or config change

Upcoming

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.