Hello,
I 'd like to inform everyone of what we consider a big change (for the
better) in the Datacenter Switchover process. The full rationale, planning
and implementation is documented at
https://wikitech.wikimedia.org/wiki/Switch_Datacenter/Recurring,_Equinox-ba…
and it includes a TL;DR that I am pasting below for everyone's convenience:
Site Reliability Engineering will, starting September 2023, run a data
center Switchover every 6 months, in the week of the solar Equinox
<https://en.wikipedia.org/wiki/Equinox>, namely the *work weeks containing
March 21st and September 21st*. If you are interested to learn more about
Switchovers and why we perform them, or already know what they are and want
to learn more about how this proposal would impact your workflows or the
Wikimedia Movement, please read on.
We hope that making the Switchover dates and duration predictable will
allow the teams involved and/or utilizing a Switchover, as well as the
entire movement reap the benefits we anticipate and document in the doc
linked above.
Regards,
--
Alexandros Kosiaris
Principal Site Reliability Engineer
Wikimedia Foundation