Deployments

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 Engineering Team). They happen on Mondays to Thursdays at:
  • "European Mid-day SWAT", 04:00 Pacific
  • "Morning SWAT", 11:00 Pacific (except Tuesdays)
  • "Evening SWAT", 16:00 Pacific

For detailed instructions on how to actually deploy code to the Wikimedia servers, see How to deploy code.

Deployments
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This page tracks upcoming deployments of software to the Wikimedia Foundation servers that host Wikimedia project sites (Wikipedia, Wiktionary, Wikiversity, Wikimedia Commons, etc.).

Cadence

For the core software ("MediaWiki"): 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).

For other non-core software: Each team is responsible for their own schedule.

Scheduling

To schedule a deploy window, or if you see a potential conflict with your upcoming deployment, please contact the Release Engineering Team on IRC at #wikimedia-releng ^connect; pinging Greg (greg-g) or Tyler (thcipriani) directly helps.

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)

• Is there a user-impacting or other severe issue?
  • Communicate this in the #wikimedia-operations ^connect IRC channel.
  • Add the #wikimedia-incident project to any relevant Phabricator task; if appropriate set to UBN! priority.
• What happens next?
  • In case of halting or reverting the weekly train

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 April 20

Time	Component	Deployer	Changes
Monday, April 20
10:30–11:00 UTC # 03:30–04:00 PDT	Wikimedia Portals Update	Jan Drewniak (jan_drewniak)	Weekly window for the portals page: https://www.wikipedia.org/
11:00–12:00 UTC # 04:00–05:00 PDT	European Mid-day SWAT (Max 6 patches)	Amir (Amir1), Lucas (Lucas_WMDE), Adam (awight), Martin (Urbanecm)	Adam W. (awight) Done [wmf.28 TwoColConflict] 591016 (deploy commands) Configurable EditStepAttempt oversampling for conflicts Done [config] 591017 (deploy commands) Temporarily enable event oversampling for conflicts Requesting Developer (irc-nickname) Gerrit link to backport or config change
17:00–17:30 UTC # 10:00–10:30 PDT	Wikidata Query Service weekly deploy	Guillaume (gehel), Mathew (onimisionipe)	...
18:00–19:00 UTC # 11:00–12:00 PDT	Morning SWAT (Max 6 patches)	Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	David Lynch (kemayo) [config] 589641 (deploy commands) DiscussionTools EditAttemptStepSamplingRate increase for some wikis Requesting Developer (irc-nickname) Gerrit link to backport or config change
20:00–21:00 UTC # 13:00–14:00 PDT	Services – Graphoid / Citoid / ORES	Aaron (halfak), Andy (accraze)	See Graphoid
21:00–23:00 UTC # 14:00–16:00 PDT	Weekly Security deployment window	Sam (Reedy), Scott (sbassett)	Held deployment window for Security-team related deploys.
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Samuel (RhinosF1) 590983 (deploy commands) Add 'media.api.aucklandmuseum.com' to $wgCopyUploadsDomains Erik B (ebernhardson) [config] 591146 (deploy commands) cirrus: Restore more_like traffic to eqiad Jdlrobson [config] 591152 (deploy commands) Update project wordmarks and icons Requesting Developer (irc-nickname) Gerrit link to backport or config change
Tuesday, April 21
11:00–11:00 UTC # 04:00–04:00 PDT	No Deploys
Wednesday, April 22
07:00–07:00 UTC # 00:00–00:00 PDT	No Deploys
Thursday, April 23
07:00–07:00 UTC # 00:00–00:00 PDT	No Deploys

Week of April 27

Time	Component	Deployer	Changes
Monday, April 27
10:30–11:00 UTC # 03:30–04:00 PDT	Wikimedia Portals Update	Jan Drewniak (jan_drewniak)	Weekly window for the portals page: https://www.wikipedia.org/
11:00–12:00 UTC # 04:00–05:00 PDT	European Mid-day SWAT (Max 6 patches)	Amir (Amir1), Lucas (Lucas_WMDE), Adam (awight), Martin (Urbanecm)	Cormac Parle (cormacparle) [config] 588988 (deploy commands) Enable quality constraints on production commons Requesting Developer (irc-nickname) Gerrit link to backport or config change
17:00–17:30 UTC # 10:00–10:30 PDT	Wikidata Query Service weekly deploy	Guillaume (gehel), Mathew (onimisionipe)	...
18:00–19:00 UTC # 11:00–12:00 PDT	Morning SWAT (Max 6 patches)	Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
20:00–21:00 UTC # 13:00–14:00 PDT	Services – Graphoid / Citoid / ORES	Aaron (halfak)), Andy (accraze)	See Graphoid
21:00–23:00 UTC # 14:00–16:00 PDT	Weekly Security deployment window	Sam (Reedy), Scott (sbassett)	Held deployment window for Security-team related deploys.
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Tuesday, April 28
11:00–12:00 UTC # 04:00–05:00 PDT	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
12:00–13:00 UTC # 05:00–06:00 PDT	Pre MediaWiki train sanity break		No Deploys
13:00–15:00 UTC # 06:00–08:00 PDT	Mediawiki train - European+American Version	Lars (liw), Brennen (brennen)	1.35 schedule group0 1.35.0-wmf.28->1.35.0-wmf.30 group1 1.35.0-wmf.28 group2 1.35.0-wmf.28 group0 to 1.35.0-wmf.30 Blockers: task T249962
16:00–17:00 UTC # 09:00–10:00 PDT	Puppet SWAT (Max 6 patches)	Filippo (godog), Giuseppe (_joe_)	Requesting Developer (irc-nickname) Gerrit link to Puppet change
17:00–18:00 UTC # 10:00–11:00 PDT	Services – Graphoid / Citoid / ORES	Aaron (halfak)), Andy (accraze)	See Graphoid
18:00–19:00 UTC # 11:00–12:00 PDT	Morning SWAT (Max 6 patches)	Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
19:00–21:00 UTC # 12:00–14:00 PDT	Mediawiki train - European+American Version (secondary timeslot)	Lars (liw), Brennen (brennen)	1.35 schedule group0 1.35.0-wmf.28->1.35.0-wmf.30 group1 1.35.0-wmf.28 group2 1.35.0-wmf.28 group0 to 1.35.0-wmf.30 Blockers: task T249962
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Wednesday, April 29
11:00–12:00 UTC # 04:00–05:00 PDT	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
12:00–13:00 UTC # 05:00–06:00 PDT	Pre MediaWiki train sanity break		No Deploys
13:00–15:00 UTC # 06:00–08:00 PDT	Mediawiki train - European+American Version	Lars (liw), Brennen (brennen)	1.35 schedule group0 1.35.0-wmf.30 group1 1.35.0-wmf.28->1.35.0-wmf.30 group2 1.35.0-wmf.28 group1 to 1.35.0-wmf.30 Blockers: task T249962
18:00–19:00 UTC # 11:00–12:00 PDT	Morning SWAT (Max 6 patches)	Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
19:00–21:00 UTC # 12:00–14:00 PDT	Mediawiki train - European+American Version (secondary timeslot)	Lars (liw), Brennen (brennen)	1.35 schedule group0 1.35.0-wmf.30 group1 1.35.0-wmf.28->1.35.0-wmf.30 group2 1.35.0-wmf.28 group1 to 1.35.0-wmf.30 Blockers: task T249962
20:00–21:00 UTC # 13:00–14:00 PDT	Services – Graphoid / Citoid / ORES	Aaron (halfak)), Andy (accraze)	See Graphoid
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Thursday, April 30
00:00–01:00 UTC # (Wed) 17:00–18:00 PDT	Phabricator update	Mukunda (twentyafterfour)	HOLD: Window to update phabricator.wikimedia.org
11:00–12:00 UTC # 04:00–05:00 PDT	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
12:00–13:00 UTC # 05:00–06:00 PDT	Pre MediaWiki train sanity break		No Deploys
13:00–15:00 UTC # 06:00–08:00 PDT	Mediawiki train - European+American Version	Lars (liw), Brennen (brennen)	1.35 schedule group0 1.35.0-wmf.30 group1 1.35.0-wmf.30 group2 1.35.0-wmf.28->1.35.0-wmf.30 group2 to 1.35.0-wmf.30 Blockers: task T249962
16:00–17:00 UTC # 09:00–10:00 PDT	Puppet SWAT (Max 6 patches)	Filippo (godog), Giuseppe (_joe_)	Requesting Developer (irc-nickname) Gerrit link to Puppet change
17:00–18:00 UTC # 10:00–11:00 PDT	Services – Graphoid / Citoid / ORES	Aaron (halfak)), Andy (accraze)	See Graphoid
18:00–19:00 UTC # 11:00–12:00 PDT	Morning SWAT (Max 6 patches)	Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
19:00–21:00 UTC # 12:00–14:00 PDT	Mediawiki train - European+American Version (secondary timeslot)	Lars (liw), Brennen (brennen)	1.35 schedule group0 1.35.0-wmf.30 group1 1.35.0-wmf.30 group2 1.35.0-wmf.28->1.35.0-wmf.30 group2 to 1.35.0-wmf.30 Blockers: task T249962
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change

Upcoming events

• 25 May (Memorial Day): No deploys

Past deployments

• /Archive

See also

• SWAT deploys