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 new 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