Dear MoveComms,
We are planning a datacentre switchover for the week of March 18th (week 12) with the following schedule:
- Services: Tuesday, 19 March 2024 @14:00 UTC
- Traffic: Tuesday, 19 March 2024 @14:00 UTC
- MediaWiki: Wednesday, 20 March 2024 @14:00 UTC
The expected impact is 2-3 minutes of read-only on Wednesday, 20 March 2024 @ 14:00 UTC.
Note that we are implementing the changes described in Recurring, Equinox-based, Data Center Switchovers, in particular:
- There is no switchback! we are staying in eqiad until the next switchover.
- Future switchovers are predictable and take place every 6 months; always on the week of an equinox.
Let serviceops know if you need more info on the changes.
Thank you!
Planning
As soon as the task is received by CRS
- Ask SRE if anything major changed since the last time (noticeable things that are worth being announced).
- If yes, update the process or the message.
- Confirm when the wikis will be in read-only
- Add the date to Asana, with a link to this task https://app.asana.com/0/1176034857101033/1206737712150740/f
Three weeks before (Feb 29)
- Tech News message (initial warning) - done
- Update the message to communities
- Check on dates and links
- Have the message being translated by emailing both:
- translators-l for translations
- wikitech-ambassadors for information and translations
- Monitor the message's talk page
Two weeks before (March 4)
- Set the banner set for display on all wikis 30 minutes before it happens.
- The banner redirects to https://meta.wikimedia.org/wiki/Tech/Server_switch
The week before (March 11)
-
- Emailing mailing lists:
- wikitech-ambassadors and translators-l once again (reminders)
- wmfall (done by SRE)
- Added to the news on the Meta front page - diff
- Send the message to communities
- Check on translations
- for the banner (here)
- for the message
- Emailing mailing lists:
- Tech News (add to the upcoming issue "this is happening this week")
The week it happens (March 18)
- monitor the wikis
The week after (March 25)
- Debrief how it went, and document (comment on this task) - done in advance