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 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.

Deployments
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This page tracks planned deployments of software to the Wikimedia Foundation servers that host the various Wikimedia projects (Wikipedia, Wiktionary, Wikiversity, 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.

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 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 calendar being wrong.

Week of October 8th

• Week of:
  • Datacenter switchover: No MediaWiki Train nor Services deploys

By day

Time	Component	Deployer	Changes
Monday, October 08
11:00–12:00 UTC # 04:00–05:00 PDT	European Mid-day SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	rxy (rxy) [config] 464890 (deploy commands) Remove the "reviewer" group at ruwikisource Urbanecm [config] 455249 (deploy commands) Use translated MetaNamespace for fy.wiktionary [config] 465047 (deploy commands) Add throttle exception for Netherlands Hackathon October 2018 - Wiki Techstorm _joe_ [config] 464117 (deploy commands) wmfSetupEtcd: Correctly initialize the local cache Gerrit link to backport or config change
18:00–19:00 UTC # 11:00–12:00 PDT	Morning SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Jayprakash12345 [config] 465176 (deploy commands) Enable Extension:File exporter to mrwikipedia (T206437) Gergő (tgr) [config] 465194 (deploy commands) Enable MCR read-new mode on some small wikis Requesting Developer (irc-nickname) Gerrit link to backport or config change
21:00–23:00 UTC # 14:00–16:00 PDT	Weekly Security deployment window	Brian (bawolff), Sam (Reedy)	Held deployment window for Security-team related deploys.
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Tuesday, October 09
11:00–12:00 UTC # 04:00–05:00 PDT	European Mid-day SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
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 backport or config change
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Wednesday, October 10
09:00–10:00 UTC # 02:00–03:00 PDT	Datacenter switchback - Traffic	SRE	Datacenter switchback - Traffic
11:00–12:00 UTC # 04:00–05:00 PDT	European Mid-day SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Urbanecm [config] 465602 (deploy commands) Permissions changes on itwikibooks Requesting Developer (irc-nickname) Gerrit link to backport or config change
14:00–15:00 UTC # 07:00–08:00 PDT	Datacenter switchback - MediaWiki	SRE	Datacenter switchback - MediaWiki
16:00–17:00 UTC # 09:00–10:00 PDT	Morning SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Thursday, October 11
11:00–12:00 UTC # 04:00–05:00 PDT	European Mid-day SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
14:30–15:30 UTC # 07:30–08:30 PDT	Datacenter Switchback - Services	SRE	Datacenter Switchback - Services
15:00–16:00 UTC # 08:00–09:00 PDT	Datacenter Switchback - Media storage/Swift	SRE	Datacenter Switchback - Media storage/Swift
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 backport or config change
18:00–19:00 UTC # 11:00–12:00 PDT	Morning SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	stephanebisson [config] 463319 (deploy commands) Remove config for RCFilters variables being removed from Core [wmf.24] 465676 (deploy commands) Handle page that are unnominated for deletion [wmf.24] 465677 (deploy commands) Default to 'deleted' and 'others' when no type is selected on mode switch Requesting Developer (irc-nickname) Gerrit link to backport or config change
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Requesting Developer (irc-nickname) Gerrit link to backport or config change

Week of October 15th

• Week of:
  • nothing yet...

By day

Time	Component	Deployer	Changes
Monday, October 15
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)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	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)	Deploy GUI update and new Updater build
18:00–19:00 UTC # 11:00–12:00 PDT	Morning SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
20:00–21:00 UTC # 13:00–14:00 PDT	Services – Parsoid / Citoid / Mobileapps / ORES / …	C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Bernd (bearND), Aaron (halfak), Amir (Amir1)	See mw:Parsoid/Deployments, Mobileapps deployments
21:00–23:00 UTC # 14:00–16:00 PDT	Weekly Security deployment window	Brian (bawolff), Sam (Reedy)	Held deployment window for Security-team related deploys.
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Tuesday, October 16
11:00–12:00 UTC # 04:00–05:00 PDT	European Mid-day SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Requesting Developer (irc-nickname) Jonas Kress (Jonas_WMDE) [Config] 463439 Enable WBQualityConstraintsSuggestionsBetaFeature in production 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 version		See the Americas version.
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 backport or config change
17:00–18:00 UTC # 10:00–11:00 PDT	Services – Graphoid / Parsoid / Citoid / ORES	C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Aaron (halfak), Amir (Amir1)	See Graphoid, mw:Parsoid/Deployments
19:00–21:00 UTC # 12:00–14:00 PDT	MediaWiki train - Americas version	Mukunda (twentyafterfour)	1.32 schedule group0 1.32.0-wmf.25>1.32.0-wmf.26 group1 1.32.0-wmf.25 group2 1.32.0-wmf.25 group0 to 1.32.0-wmf.26 Blockers: task T191072
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Wednesday, October 17
11:00–12:00 UTC # 04:00–05:00 PDT	European Mid-day SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	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 version		See the Americas version.
16:00–17:00 UTC # 09:00–10:00 PDT	Morning SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
19:00–21:00 UTC # 12:00–14:00 PDT	MediaWiki train - Americas version	Mukunda (twentyafterfour)	1.32 schedule group0 1.32.0-wmf.26 group1 1.32.0-wmf.25>1.32.0-wmf.26 group2 1.32.0-wmf.25 group1 to 1.32.0-wmf.26 Blockers: task T191072
20:00–21:00 UTC # 13:00–14:00 PDT	Services – Parsoid / Citoid / Mobileapps / ORES / …	C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Bernd (bearND), Aaron (halfak), Amir (Amir1)	See mw:Parsoid/Deployments, Mobileapps deployments
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Thursday, October 18
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)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	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 version		See the Americas version.
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 backport or config change
17:00–18:00 UTC # 10:00–11:00 PDT	Services – Graphoid / Parsoid / Citoid / ORES	C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Aaron (halfak), Amir (Amir1)	See Graphoid, mw:Parsoid/Deployments
18:00–19:00 UTC # 11:00–12:00 PDT	Morning SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
19:00–21:00 UTC # 12:00–14:00 PDT	MediaWiki train - Americas version	Mukunda (twentyafterfour)	1.32 schedule group0 1.32.0-wmf.26 group1 1.32.0-wmf.26 group2 1.32.0-wmf.25->1.32.0-wmf.26 group2 to 1.32.0-wmf.26 Blockers: task T191072
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	addshore, Antoine (hashar), Katie (aude), Max (MaxSem), Mukunda (twentyafterfour), Roan (RoanKattouw), Sébastien (Dereckson), Tyler (thcipriani), Niharika (Niharika), or Željko (zeljkof)	Requesting Developer (irc-nickname) Gerrit link to backport or config change

Upcoming

• Week of Oct 8: no Train, no service deployment, datacenter switchover
• Week of Nov 19: no Train all week. No deploys on Wednesday and Thursday (US Holiday - Thanksgiving)
• Week of Dec 3: No Train; Release Engineering team offsite. (SWATs etc OK)
• Weeks of Dec 24 & 31: No deploys. US Holidays.
• Week of Jan 28: No deploys, WMF All Hands

Past deployments

• /Archive