Deployments

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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.
  • Backport windows are for pushing out simple and low-risk changes (as assessed by you, backport team, and the Release Engineering Team). They happen on Mondays to Thursdays at:
    • "European Mid-day backport window", 04:00 Pacific
    • "Morning backport window", 11:00 Pacific (except Tuesdays)
    • "Evening backport window", 16:00 Pacific

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

Deployments

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
You don't need to schedule a deploy window for most changes; they can be deployed using existing Backport windows that are already scheduled several times a week.
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 a new deployment window.
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)

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 August 03

Time Component Deployer Changes

Sunday, August 02

 UTC #
 PDT
No deploys all day! See Deployments/Emergencies if things are broken. No Deploys

Monday, August 03

 UTC #
 PDT
Wikimedia Portals Update Jan Drewniak (jan_drewniak) Weekly window for the portals page: https://www.wikipedia.org/
 UTC #
 PDT
European mid-day backport window
(Max 6 patches)
Amir (Amir1), Lucas (Lucas_WMDE), Adam (awight), Martin (Urbanecm) Martin (Urbanecm)
  • [config] 617717 New throttle rule for Czech editathon

Requesting Developer (irc-nickname)

  • Gerrit link to backport or config change
 UTC #
 PDT
Wikidata Query Service weekly deploy Guillaume (gehel), Mathew (onimisionipe) Lucas Werkmeister (Lucas_WMDE)
  • [gui] 618023 Merging from 293f20782b64f8fa99dd722377bafc29bf726a87
 UTC #
 PDT
Morning backport window
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change
 UTC #
 PDT
ServicesGraphoid / ORES Aaron (halfak), Andy (accraze) See Graphoid
 UTC #
 PDT
Weekly Security deployment window Sam (Reedy), Scott (sbassett) Held deployment window for Security-team related deploys.
 UTC #
 PDT
Evening backport window
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) RoanKattouw
  • [config] 617442 Enable GrowthExperiments on fawiki

Requesting Developer (irc-nickname)

  • Gerrit link to backport or config change

Tuesday, August 04

 UTC #
 PDT
m2 database master failover marostegui, jynus, akosiaris T257540
 UTC #
 PDT
European mid-day backport window
(Max 6 patches)
Amir (Amir1), Lucas (Lucas_WMDE), Adam (awight), Martin (Urbanecm) Lucas Werkmeister (Lucas_WMDE)
  • [config] 618266 Load WikibaseRepo using extension registration in production

Requesting Developer (irc-nickname)

  • Gerrit link to backport or config change
 UTC #
 PDT
Puppet request window
(Max 6 patches)
Filippo (godog), Giuseppe (_joe_) Requesting Developer (irc-nickname)
  • Gerrit link to Puppet change
 UTC #
 PDT
ServicesGraphoid / ORES Aaron (halfak), Andy (accraze) See Graphoid
 UTC #
 PDT
Pre MediaWiki train sanity break No Deploys
 UTC #
 PDT
Mediawiki train - American Version Brennen (brennen), Ahmon (dancy) 1.36 schedule
group0 1.36.0-wmf.2->1.36.0-wmf.3
group1 1.36.0-wmf.2
group2 1.36.0-wmf.2
 UTC #
 PDT
Evening backport window
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change

Wednesday, August 05

 UTC #
 PDT
European mid-day backport window
(Max 6 patches)
Amir (Amir1), Lucas (Lucas_WMDE), Adam (awight), Martin (Urbanecm) Adam W. (awight)
  • Placeholder: FileImporter full default deployment.

Lucas Werkmeister (Lucas_WMDE)

  • [config] 595542 Enable Data Bridge on Test Wikidata clients

Requesting Developer (irc-nickname)

  • Gerrit link to backport or config change
 UTC #
 PDT
Train log triage with CPT Brennen (brennen), Ahmon (dancy) + CPT See Heterogeneous_deployment/Train_deploys#Breakage
 UTC #
 PDT
Morning backport window
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Nick Ray (nray)
  • [config] 618343 Re-enable growth study quick survey

Requesting Developer (irc-nickname)

  • Gerrit link to backport or config change
 UTC #
 PDT
Mediawiki train - American Version Brennen (brennen), Ahmon (dancy) 1.36 schedule
group0 1.36.0-wmf.3
group1 1.36.0-wmf.2->1.36.0-wmf.3
group2 1.36.0-wmf.2
 UTC #
 PDT
ServicesGraphoid / ORES Aaron (halfak), Andy (accraze) See Graphoid
 UTC #
 PDT
Evening backport window
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change

Thursday, August 06

 UTC #
(Wed)  PDT
Phabricator update Mukunda (twentyafterfour) HOLD: Window to update phabricator.wikimedia.org
 UTC #
 PDT
ServicesCitoid / Zotero Marielle (mvolz) See Citoid
 UTC #
 PDT
European mid-day backport window
(Max 6 patches)
Amir (Amir1), Lucas (Lucas_WMDE), Adam (awight), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change
 UTC #
 PDT
Puppet request window
(Max 6 patches)
Filippo (godog), Giuseppe (_joe_) Requesting Developer (irc-nickname)
  • Gerrit link to Puppet change
 UTC #
 PDT
ServicesGraphoid / ORES Aaron (halfak), Andy (accraze) See Graphoid
 UTC #
 PDT
Morning backport window
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change
 UTC #
 PDT
Mediawiki train - American Version Brennen (brennen), Ahmon (dancy) 1.36 schedule
group0 1.36.0-wmf.3
group1 1.36.0-wmf.3
group2 1.36.0-wmf.2->1.36.0-wmf.3
 UTC #
 PDT
Evening backport window
(Max 6 patches)
Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm) Requesting Developer (irc-nickname)
  • Gerrit link to backport or config change

Friday, August 07

 UTC #
 PDT
No deploys all day! See Deployments/Emergencies if things are broken. No Deploys

Saturday, August 08

 UTC #
 PDT
No deploys all day! See Deployments/Emergencies if things are broken. No Deploys

Upcoming events

Past deployments

See also