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 January 25th

• Week of:
  • nothing yet

By day

Time	Component	Deployer	Changes
Monday, January 25
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 N Scrubbed due to deployment issues [config] 264765 (deploy commands) Enable VisualEditor by default for some other wikis task T116523 N Scrubbed due to deployment issues [config] 258206 (deploy commands) Centralise all VisualEditor feedback pages except for a few wikis task T92661 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, January 26
00:00–01:00 UTC # (Mon) 16:00–17:00 PST	Evening SWAT (Max 8 patches)	Roan (RoanKattouw), Chad (ostriches), or Alex (Krenair)	James_F [config] 258404 (deploy commands) VisualEditor: Provide framework for enabling an A/B test for IPs [config] 258405 (deploy commands) VisualEditor: Don't set ShowBetaWelcome, now set in repo AaronSchulz [config] 265178 (deploy commands) $wgCentralAuthUseSlaves for loginwiki, mw.org [config] 197499 (deploy commands) codfw filebackend config ebernhardson [config] 265927 (deploy commands) Add popularity score field to elasticsearch indices [config] 265372 (deploy commands) Change CirrusSearch sharding values to better utilize codfw cluster [config] 260176 (deploy commands) Remove variables for now unused experiment [config] 261287 (deploy commands) Reduce the number of titlesuggest shards where possible Julien (jgirault), Jan (jan_drewniak) [config] 266278 (deploy commands) Bump portals to master (remove A/B/C test from production) bd808 [config] 266307 (deploy commands) Only send warning and higher session logs to logstash 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)	Sébastien (Dereckson) [config] 265893 (deploy commands) Add Portal namespace on wuu.wikipedia (task T124389) [config] 265896 (deploy commands) Namespaces configuration on sk.wikipedia (task T122175) [config] 265892 (deploy commands) Remove Tranwiki namespace on wuu.wikipedia (task T124389) [config] 265891 (deploy commands) Namespace configuration for wuu.wikipedia (task T124389) [config] 266427 (deploy commands) Set category collation to uca-lt on lt.wikipedia (task T123627) [config] 265666 (deploy commands) Enable SandboxLink on nl.wikiquote (task T124167) [config] 265623 (deploy commands) Update et.wikiquote logo (task T124154) [config] 265888 (deploy commands) Namespace configuration on ur.wikipedia (task T122045)
17:00–18:00 UTC # 09:00–10:00 PST	Puppet SWAT (Max 8 patches)	RobH (RobH), cmjohnson (cmjohnson1)	Alex (Krenair) 265548 (deploy commands) beta: Remove deployment.wmflabs.org VHost that doesn't actually resolve 265642 (deploy commands) mediawiki: Move www.wikimedia.org portal into wwwportals 265659 (deploy commands) beta: Move login and bits apache configs into wikimedia.conf, like prod Erik B (ebernhardson) 265942 (deploy commands) Icinga alert for CirrusSearch 50th percentile prefix search time 265427 (deploy commands) Fix error handling in CirrusSearch completion suggester cron job 238850 (deploy commands) Update elasticsearch recover_after_nodes value in eqiad Eric E (urandom) 266299 (deploy commands) Match restbase staging hosts to Cassandra staging nodes.
19:00–21:00 UTC # 11:00–13:00 PST	MediaWiki train	Dan (marxarelli)	1.27 schedule group0 1.27.0-wmf.10->1.27.0-wmf.11 group1 1.27.0-wmf.10 group2 1.27.0-wmf.10 group0 to 1.27.0-wmf.11 test wikis and mediawiki.org Please take this comment about a special deployment of a change in EventLogging into account.
Wednesday, January 27
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	Dan (marxarelli)	1.27 schedule group0 1.27.0-wmf.11 group1 1.27.0-wmf.10->1.27.0-wmf.11 group2 1.27.0-wmf.10 group1 to 1.27.0-wmf.11 All non-Wikipedia sites (Wiktionary, Wikisource, Wikinews, Wikibooks, Wikiquote, Wikiversity, etc) Catalan and Hebrew Wikipedias Please take this comment about a special deployment of a change in EventLogging into account.
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, January 28
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)	Addshore (Addshore) [config] 264733 (deploy commands) Set wgRCWatchCategoryMembership true on wikipedias & commons
17:00–18:00 UTC # 09:00–10:00 PST	Puppet SWAT (Max 8 patches)	RobH (RobH), cmjohnson (cmjohnson1)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
19:00–21:00 UTC # 11:00–13:00 PST	MediaWiki train	Dan (marxarelli)	1.27 schedule group0 1.27.0-wmf.11 group1 1.27.0-wmf.11 group2 1.27.0-wmf.10->1.27.0-wmf.11 group2 to 1.27.0-wmf.11 All Wikipedias
Friday, January 29
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 February 1st

• Week of:
  • nothing yet

By day

Time	Component	Deployer	Changes
Monday, February 01
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 02
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_), Emanuele (ema)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
19:00–21:00 UTC # 11:00–13:00 PST	MediaWiki train	Dan (marxarelli)	1.27 schedule group0 1.27.0-wmf.12->1.27.0-wmf.13 group1 1.27.0-wmf.12 group2 1.27.0-wmf.12 group0 to 1.27.0-wmf.13 test wikis and mediawiki.org
Wednesday, February 03
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	Dan (marxarelli)	1.27 schedule group0 1.27.0-wmf.13 group1 1.27.0-wmf.12->1.27.0-wmf.13 group2 1.27.0-wmf.12 group1 to 1.27.0-wmf.13 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, February 04
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)	Addshore (Addshore) [config] 264734 (deploy commands) Set wgRCWatchCategoryMembership true everywhere except wikisource
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	Dan (marxarelli)	1.27 schedule group0 1.27.0-wmf.13 group1 1.27.0-wmf.13 group2 1.27.0-wmf.12->1.27.0-wmf.13 group2 to 1.27.0-wmf.13 All Wikipedias
Friday, February 05
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

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.