Dear Wikitechians,

I would like to remind you that the datacenter switchover will happen
on *Wednesday
March 1st* starting at *14:00 UTC.*

Please refer to the original email for any additional information. As
always, you can reach out to me directly or the SRE team in #wikimedia-sre
on IRC with any question, or through Phabricator.

Thank you,

On Tue, Feb 14, 2023 at 1:58 PM Clément Goubert <[email protected]>
wrote:

> Dear Wikitechians,
>
> On *Wednesday March 1st*, the SRE team will run a planned data center
> switchover, moving all wikis from our primary data center in Virginia to
> the secondary data center in Texas. This is an important periodic test of
> our tools and procedures, to ensure the wikis will continue to be available
> even in the event of major technical issues in our primary home. It also
> gives all our SRE and ops teams a chance to do maintenance and upgrades on
> systems in Virginia that normally run 24 hours a day.
>
> The switchover process requires a *brief read-only period for all
> Foundation-hosted wikis*, which will start at *14:00 UTC on Wednesday
> March 1st*, and will last for a few minutes while we execute the
> migration as efficiently as possible. All our public and private wikis will
> be continuously available for reading as usual, but no one will be able to
> save edits during the process. Users will see a notification of the
> upcoming maintenance, and anyone still editing will be asked to try again
> in a few minutes.
>
> CommRel has already begun notifying communities of the read-only window. A
> similar event will follow a few weeks later, when we move back to Virginia.
> This is currently scheduled for *Wednesday, April 26th*.
>
> If you like, you can follow along on the day in the public
> #wikimedia-operations channel on IRC (instructions for joining here
> <https://meta.wikimedia.org/wiki/IRC/Instructions>). To report any
> issues, you can reach us in #wikimedia-sre on IRC, or file a Phabricator
> ticket with the *datacenter-switchover* tag (pre-filled form here
> <https://phabricator.wikimedia.org/maniphest/task/edit/form/1/?projects=Datacenter-Switchover&subscribers=Clement_Goubert>);
> we'll be monitoring closely for reports of trouble during and after the
> switchover. (If you're new to Phab, there's more information at
> Phabricator/Help.) The switchover and its preparation are tracked tracked
> in Phabricator Task T327920 <https://phabricator.wikimedia.org/T327920>
>
> On behalf of the SRE team, please excuse the disruption, and our thanks to
> everyone in a number of departments who've been involved in planning this
> work for the past weeks. Feel free to reply directly to me with any
> questions.
>
> Thank you,
>
> --
> Clément Goubert (they/them)
> Senior SRE
> Wikimedia Foundation
>


-- 
Clément Goubert (they/them)
Senior SRE
Wikimedia Foundation
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