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 7th

• Week of:
  • Move Catalan and Hebrew Wikipedias to "group1" (ie: Wednesday) deploy group - https://gerrit.wikimedia.org/r/#/c/253371/ - task T115002

By day

Time	Component	Deployer	Changes
Monday, December 07
15:00–16:00 UTC # 07:00–08:00 PST	Deploy Kartotherian & Tilerator service	yurik	gerrit:257300, gerrit:257301
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)	tto gerrit:157338 Enable cluster-wide import setup on Beta Cluster gerrit:255954 Translate project namesapce for jbowiki Dereckson [config] 254665 (deploy commands) Namespace configuration for ur.wikipedia (T119308) [config] 254486 (deploy commands) Rights configuration on fa.wikipedia (T118847) [config] 254475 (deploy commands) Enable subpages for high number namespaces [config] 254476 (deploy commands) Namespace configuration for en.wiktionary (T119207) Bernd & Michael (bearND, mdholloway) gerrit:254045 Roll out RESTBase usage to Android Beta app: 10%
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
22:00–23:00 UTC # 14:00–15:00 PST	Discovery	Erik B (ebernhardson), Julien (jgirault)	Portal
Tuesday, December 08
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] 251523 (deploy commands) Enable Flow beta feature on bswiki and urwiki [wmf.7] 256459 (deploy commands) Connect OOjs UI to MediaWiki's localisation system task T119984 aude [config] 256707 (deploy commands) Enable [beta wikidata] access for beta meta-wiki. Brandon Black (bblack) [config] 256730 (deploy commands) Revert "wgHTCPRouting: use separate address for upload" - task T119038 Krinkle [wmf.7] 256446 (deploy commands) [MwEmbedSupport] Fix Uncaught TypeError in Spinner.js jdlrobson [config] 252660 (deploy commands) and [wmf.7] 257403 (deploy commands) (impacts fundraiser!) [config] 251544 (deploy commands)
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)	Kartik Mistry (kart_) [config] 255102 (deploy commands) CX: Use ContentTranslationRESTBase jzerebecki [config][no-op] 257318 (deploy commands) Wikidata: set maxSerializedEntitySize to 2500 Andrew Green (AndyRussG) [wmf7] 257615 (deploy commands) CentralNotice update Dereckson [config] 257487 (deploy commands) Fix typo in namespace Requesting Developer (irc-nickname) Gerrit link to backport or config change
17:00–19:00 UTC # 09:00–11:00 PST	Labs ldap maintenance window	Andrew Bogott (andrewbogott), Moritz (moritzm)	Replacement of opendj with openldap. Possible labs and wikitech outages
18:00–19:00 UTC # 10:00–11:00 PST	Puppet SWAT (Max 8 patches) Dependent on LDAP migration window completion	Fillipo (godog), RobH (robh)	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.7->1.27.0-wmf.8 group1 1.27.0-wmf.7 group2 1.27.0-wmf.7 group0 to 1.27.0-wmf.8 test wikis and mediawiki.org
Wednesday, December 09
00:00–01:00 UTC # (Tue) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	yurik, jgirault 257752 (deploy commands), 257777 (deploy commands), 257779 (deploy commands), 257797 (deploy commands) - interactive graph minor fixes -- you can simply git pull the master and sync ebernhardson [config] 256974 (deploy commands) Set sizes for completion suggester indices in elasticsearch [config] 254071 (deploy commands) Turn off language detection a/b/c test in cirrussearch 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, jgirault 257752 (deploy commands), 257777 (deploy commands), 257779 (deploy commands), 257797 (deploy commands) - interactive graph minor fixes -- you can simply git pull the master and sync. Patches are moved from yesterday's SWAT. James_F [config] 257800 (deploy commands) Configure Beta Cluster enwiki to use VisualEditorUseSingleEditTab [config] 256881 (deploy commands) Enable importupload and some import sources for officewiki [config] 253371 (deploy commands) Move Catalan and Hebrew Wikipedias to group1 [config] 255129 (deploy commands) Add right to CU+OS groups on en.wikipedia.org task T119446 jzerebecki [wmf8] 257901 (deploy commands) Wikibase: Make sure that we don't cache ParserOutputs without HTML; Implement cache invalidation for TemplateModule ebernhardson [config] 256974 (deploy commands) Set sizes for completion suggester indices in elasticsearch [config] 254071 (deploy commands) Turn off language detection a/b/c test in cirrussearch 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.8 group1 1.27.0-wmf.7->1.27.0-wmf.8 group2 1.27.0-wmf.7 group1 to 1.27.0-wmf.8 All non-Wikipedia sites (Wiktionary, Wikisource, Wikinews, Wikibooks, Wikiquote, Wikiversity, and a few other sites) Move Catalan and Hebrew Wikipedias to "group1" (ie: Wednesday) deploy group - https://gerrit.wikimedia.org/r/#/c/253371/ - task T115002
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, December 10
00:00–01:00 UTC # (Wed) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	Krinkle 257966 (deploy commands) [wmf.8] resourceloader: Migrate msg_resource to objectcache 258023 (deploy commands) [wmf.8] Update WikimediaMaintenance/refreshMessageBlobs.php to match msg_resource changes 257970 (deploy commands) [wmf.8] Vector: Fix readability for logged-out personal bar legoktm 257077 (deploy commands) [config] Set $wgExtDistGraphiteRenderApi Roan (RoanKattouw) 258069 (deploy commands) [wmf.8] Fix bug in Flow Thanks notifications jdlrobson 258053 (deploy commands) - enable A/B test 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)	Luke081515 (Luke081515) [config] 254029 (deploy commands) Nuke and unblockself only for bureaucrats on en.wikiversity (T113109) [config] 252012 (deploy commands) Add new group "curator" to enwikiversity (T113109) [config] 255422 (deploy commands) Enable filemover group at ukwiki (T119636) [config] 253084 (deploy commands) Add a rollbacker group at wuuwiki (T116270) [config] 257881 (deploy commands) Add three new groups to pawiki (T120369) Bernd, Michael (bearND, mdholloway) gerrit:257949 Roll out RESTBase usage to Android Beta app: 30% 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), Rob (robh)	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.8 group1 1.27.0-wmf.8 group2 1.27.0-wmf.7->1.27.0-wmf.8 group2 to 1.27.0-wmf.8 All Wikipedias
Friday, December 11
00:00–01:00 UTC # (Thu) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	csteipp [config] 222057 (deploy commands) Strengthen password policy for 'staff' group Erik B (ebernhardson) [config] 255135 (deploy commands) Use event-schemas submodule to source avro schemas jdlrobson Hide RelatedArticles on edit 258062 (deploy commands) Enable RelatedArticles on wikipedia beta 257435 (deploy commands) Requesting Developer (irc-nickname) Gerrit link to backport or config change

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)	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)	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
19:00–21:00 UTC # 11:00–13:00 PST	MediaWiki train	Mukunda (twentyafterfour)	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
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)	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
19:00–21:00 UTC # 11:00–13:00 PST	MediaWiki train	Mukunda (twentyafterfour)	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
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)	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)	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_), Moritz (moritzm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
19:00–21:00 UTC # 11:00–13:00 PST	MediaWiki train	Mukunda (twentyafterfour)	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)	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)	Andrew Bogott (andrewbogott), Alexandros (akosiaris)	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)	Andrew Bogott (andrewbogott), Alexandros (akosiaris)	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)	Andrew Bogott (andrewbogott), Alexandros (akosiaris)	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)	Andrew Bogott (andrewbogott), Alexandros (akosiaris)	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

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.

• 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 Katie 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 Greg and/or Katie needed) (Why: End of year Fundraising)
• Week of Dec 28th: No normal deploys - high priority SWATs only (pre-approval from Greg and/or Katie 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

Scheduled

• December 15: Enable Wikidata data access on Meta-Wiki. (23:00 UTC) phab:T117524

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.