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 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 October 21

• Week of:
  • Wikidata wb_terms item migration script running (all month)

Time	Component	Deployer	Changes
Monday, October 21
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)	Marko (mobrovac) Done [core/1.35.0-wmf.2] 543730 (deploy commands) SqlBlobStore HOT FIX: remove caching from getBlobBatch Kartik Mistry (kart_) Done [config] 543764 (deploy commands) Enable CX out of beta in Malayalam/Bengali/Mongolian WPs Adam Wight (awight) Done [config] 544855 (deploy commands) Put reference previews back into beta mode on beta cluster 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)	GUI Updates
18:00–19:00 UTC # 11:00–12:00 PDT	Morning SWAT (Max 6 patches)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Bartosz (MatmaRex) (task T235959) TreeModifier: Ignore removed nodes… wmf.1: 544915 (deploy commands) / wmf.2: 544917 (deploy commands) wmf.1: 544916 (deploy commands) / wmf.2: 544918 (deploy commands) (task T233320) Detect mangled etags… wmf.1: 544934 (deploy commands) / wmf.2: 544938 (deploy commands) wmf.1: 544935 (deploy commands) / wmf.2: 544939 (deploy commands) (task T234564) Try using structured logging again wmf.1: 544957 (deploy commands) / wmf.2: 544958 (deploy commands) Requesting Developer (irc-nickname) Gerrit link to backport or config change
19:00–22:00 UTC # 12:00–15:00 PDT	Gerrit server migration	paladox,mutante,thcipriani
20:00–21:00 UTC # 13:00–14:00 PDT	Services – Graphoid / Parsoid / Citoid / ORES	C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Aaron (halfak)), Andy (accraze)	See Graphoid, mw:Parsoid/Deployments
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)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Tuesday, October 22
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
13:00–14:00 UTC # 06:00–07:00 PDT	Mediawiki train - European Version	liw,brennen	1.35 schedule group0 1.35.0-wmf.2->1.35.0-wmf.3 group1 1.35.0-wmf.2 group2 1.35.0-wmf.2 group0 to 1.35.0-wmf.3 Blockers: task T233851
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)), Andy (accraze)	See Graphoid, mw:Parsoid/Deployments
18:00–19:00 UTC # 11:00–12:00 PDT	Morning SWAT (Max 6 patches)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	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)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Andrew Bogott (andrewbogott) 543664 (deploy commands) labtestwiki: move to a wmcs-hosted database on clouddb2001-dev 543943 (deploy commands) labtestwikitech: use the new codfw1-dev servers Requesting Developer (irc-nickname) Gerrit link to backport or config change
Wednesday, October 23
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
13:00–14:00 UTC # 06:00–07:00 PDT	Mediawiki train - European Version	liw,brennen	1.35 schedule group0 1.35.0-wmf.3 group1 1.35.0-wmf.2->1.35.0-wmf.3 group2 1.35.0-wmf.2 group1 to 1.35.0-wmf.3 Blockers: task T233851
18:00–19:00 UTC # 11:00–12:00 PDT	Morning SWAT (Max 6 patches)	Max (MaxSem), 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 / Parsoid / Citoid / ORES	C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Aaron (halfak)), Andy (accraze)	See Graphoid, mw:Parsoid/Deployments
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Thursday, October 24
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
13:00–14:00 UTC # 06:00–07:00 PDT	Mediawiki train - European Version	liw,brennen	1.35 schedule group0 1.35.0-wmf.3 group1 1.35.0-wmf.3 group2 1.35.0-wmf.2->1.35.0-wmf.3 group2 to 1.35.0-wmf.3 Blockers: task T233851
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)), Andy (accraze)	See Graphoid, mw:Parsoid/Deployments
18:00–19:00 UTC # 11:00–12:00 PDT	Morning SWAT (Max 6 patches)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	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)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change

Week of October 28

• Week of:
  • Wikidata wb_terms item migration script running (all month)

Time	Component	Deployer	Changes
Monday, October 28
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)	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)	Max (MaxSem), 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 / Parsoid / Citoid / ORES	C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Aaron (halfak)), Andy (accraze)	See Graphoid, mw:Parsoid/Deployments
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)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Tuesday, October 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
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)), Andy (accraze)	See Graphoid, mw:Parsoid/Deployments
18:00–19:00 UTC # 11:00–12:00 PDT	Pre MediaWiki train sanity break		No Deploys
19:00–20:00 UTC # 12:00–13:00 PDT	Mediawiki train - American Version	Brennen (brennen), Mukunda (twentyafterfour)	1.35 schedule group0 1.35.0-wmf.3->1.35.0-wmf.4 group1 1.35.0-wmf.3 group2 1.35.0-wmf.3 group0 to 1.35.0-wmf.4 Blockers: task T233852
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Wednesday, October 30
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
18:00–19:00 UTC # 11:00–12:00 PDT	Morning SWAT (Max 6 patches)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
19:00–20:00 UTC # 12:00–13:00 PDT	Mediawiki train - American Version	Brennen (brennen), Mukunda (twentyafterfour)	1.35 schedule group0 1.35.0-wmf.4 group1 1.35.0-wmf.3->1.35.0-wmf.4 group2 1.35.0-wmf.3 group1 to 1.35.0-wmf.4 Blockers: task T233852
20:00–21:00 UTC # 13:00–14:00 PDT	Services – Graphoid / Parsoid / Citoid / ORES	C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Aaron (halfak)), Andy (accraze)	See Graphoid, mw:Parsoid/Deployments
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
Thursday, October 31
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
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)), Andy (accraze)	See Graphoid, mw:Parsoid/Deployments
18:00–19:00 UTC # 11:00–12:00 PDT	Morning SWAT (Max 6 patches)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
19:00–20:00 UTC # 12:00–13:00 PDT	Mediawiki train - American Version	Brennen (brennen), Mukunda (twentyafterfour)	1.35 schedule group0 1.35.0-wmf.4 group1 1.35.0-wmf.4 group2 1.35.0-wmf.3->1.35.0-wmf.4 group2 to 1.35.0-wmf.4 Blockers: task T233852
23:00–00:00 UTC # 16:00–17:00 PDT	Evening SWAT (Max 6 patches)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change

Week of November 4

• Week of:
  • Wikidata wb_terms item migration script running (all month)

By day

Time	Component	Deployer	Changes
Monday, November 04
10:30–11:00 UTC # 02:30–03:00 PST	Wikimedia Portals Update	Jan Drewniak (jan_drewniak)	Weekly window for the portals page: https://www.wikipedia.org/
12:00–13:00 UTC # 04:00–05:00 PST	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
18:00–18:30 UTC # 10:00–10:30 PST	Wikidata Query Service weekly deploy	Guillaume (gehel), Mathew (onimisionipe)	...
19:00–20:00 UTC # 11:00–12:00 PST	Morning SWAT (Max 6 patches)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika) or Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
21:00–22:00 UTC # 13:00–14:00 PST	Services – Parsoid / Citoid / Mobileapps / ORES / …	C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Bernd (bearND), Aaron (halfak)), Andy (accraze)	See mw:Parsoid/Deployments, Mobileapps deployments
22:00–00:00 UTC # 14:00–16:00 PST	Weekly Security deployment window	Sam (Reedy), Scott (sbassett)	Held deployment window for Security-team related deploys.
Tuesday, November 05
00:00–01:00 UTC # (Mon) 16:00–17:00 PST	Evening SWAT (Max 6 patches)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
12:00–13:00 UTC # 04:00–05:00 PST	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
17:00–18:00 UTC # 09:00–10:00 PST	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 # 10:00–11:00 PST	Services – Graphoid / Parsoid / Citoid / ORES	C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Aaron (halfak)), Andy (accraze)	See Graphoid, mw:Parsoid/Deployments
19:00–20:00 UTC # 11:00–12:00 PST	Pre MediaWiki train sanity break		No deploys
20:00–21:00 UTC # 12:00–13:00 PST	MediaWiki train - American version	Dan (marxarelli)	1.35 schedule group0 1.35.0-wmf.4->1.35.0-wmf.5 group1 1.35.0-wmf.4 group2 1.35.0-wmf.4 group0 to 1.35.0-wmf.5 Blockers: task T233853
Wednesday, November 06
00:00–01:00 UTC # (Tue) 16:00–17:00 PST	Evening SWAT (Max 6 patches)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
12:00–13:00 UTC # 04:00–05:00 PST	European Mid-day SWAT (Max 6 patches)	Amir (Amir1), Lucas (Lucas_WMDE), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
17:00–18:00 UTC # 09:00–10:00 PST	Morning SWAT (Max 6 patches)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika) or Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
19:00–20:00 UTC # 11:00–12:00 PST	Pre MediaWiki train sanity break		No deploys
20:00–22:00 UTC # 12:00–14:00 PST	MediaWiki train - American version	Dan (marxarelli)	1.35 schedule group0 1.35.0-wmf.5 group1 1.35.0-wmf.4->1.35.0-wmf.5 group2 1.35.0-wmf.4 group1 to 1.35.0-wmf.5 Blockers: task T233853
21:00–22:00 UTC # 13:00–14:00 PST	Services – Parsoid / Citoid / Mobileapps / ORES / …	C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Bernd (bearND), Aaron (halfak)), Andy (accraze)	See mw:Parsoid/Deployments, Mobileapps deployments
Thursday, November 07
00:00–01:00 UTC # (Wed) 16:00–17:00 PST	Evening SWAT (Max 6 patches)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	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
12:00–13:00 UTC # 04:00–05:00 PST	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
17:00–18:00 UTC # 09:00–10:00 PST	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 # 10:00–11:00 PST	Services – Graphoid / Parsoid / Citoid / ORES	C.Scott (cscott), Arlo (arlolra), Subbu (subbu), Aaron (halfak)), Andy (accraze)	See Graphoid, mw:Parsoid/Deployments
19:00–20:00 UTC # 11:00–12:00 PST	Morning SWAT (Max 6 patches)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika) or Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change
20:00–22:00 UTC # 12:00–14:00 PST	MediaWiki train - American version	Dan (marxarelli)	1.35 schedule group0 1.35.0-wmf.5 group1 1.35.0-wmf.5 group2 1.35.0-wmf.4->1.35.0-wmf.5 group2 to 1.35.0-wmf.5 Blockers: task T233853
Friday, November 08
00:00–01:00 UTC # (Thu) 16:00–17:00 PST	Evening SWAT (Max 6 patches)	Max (MaxSem), Roan (RoanKattouw), Niharika (Niharika), Martin (Urbanecm)	Requesting Developer (irc-nickname) Gerrit link to backport or config change

Upcoming

• November 11 (Veterans' Day) - US Staff
• November 12-15 - TechConf
• November 16-21 - Engineering Productivity (including Release Engineering) offsite
• November 28–29 (Thanksgiving) - US Staff
• December 23-January 3rd - No deploys, Holiday break
• January 20 (Martin Luther King Jr. Day) - US Staff

• /Template

Past deployments

• /Archive