We are planning a datacenter switchover for the week of March 1st (week 9) with the following schedule:
- Services: Tuesday, February 28th, 2023 14:00 UTC
- Traffic: Tuesday, February 28th, 2023 15:00 UTC
- MediaWiki: Wednesday, March 1st, 2023 14:00 UTC
The switchback date is currently set to Wednesday, April 26th, 2023 (week 17)
As the June 2021 switchover resulted in 1m57s of read-only time, do you think it is reasonable to forgo putting up a banner this time?
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 precisely when the wikis will be in read-only
- Add the date to Asana, with a link to this task
Three weeks before (Feb 6 - week 6)
- Tech News message (initial warning)
- Update the message to communities
- Check on dates and links
- Have the message being translated by emailing both:
- translators-l for translations
- wikitech-l for information and translations
- Monitor the message's talk page
Two weeks before (Feb 13 - week 7)
- 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 (Feb 20 - week 8)
- Tech News message (reminder)
- Emailing mailing lists:
- wikitech-l and translators once again
- wmfall (done by Ops)
- Added to the news on the Meta front page
- Send the message to communities
- non-technical village pumps
- bot coordination pages
- Check on translations
- for the banner
- for the message
The week it happens (Feb 27 - week 9)
- Switch of all traffic back to the primary data center on 1 March.
The week after (March 6 - week 10)
- Debrief how it went, and document (comment on this task)