Mailing List Archive: Next datacenter switchover: week of Sept. 13

Hi,

The next datacenter switchover, going from codfw (Texas) to eqiad
(Virginia), will be the week of Sept. 13. The schedule is as follows:

Services: Monday, Sept 13th 14:00 UTC
Traffic: Monday, Sept 13th 15:00 UTC
MediaWiki: Tuesday, Sept 14th 14:00 UTC

If you're not familiar with this process, see
<https://wikitech.wikimedia.org/wiki/Switch_Datacenter>. We also
recently published a blog post recapping the June switchover:
<https://techblog.wikimedia.org/2021/07/23/june-2021-data-center-switchover/>.

<https://phabricator.wikimedia.org/T287539> is the Phabricator tracking
task for this switchover.

Thanks,
-- Kunal
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Hi,

Just a reminder that this is happening next week.

On 8/4/21 1:27 PM, Kunal Mehta wrote:
> Services: Monday, Sept 13th 14:00 UTC
> Traffic: Monday, Sept 13th 15:00 UTC
> MediaWiki: Tuesday, Sept 14th 14:00 UTC

The services/traffic switchovers should be invisible to users, while we
expect around 2 minutes of read-only time during the MediaWiki
switchover if all goes well. Coordination will take place on IRC in
#wikimedia-operations, like usual.

We did a live test of the switchover process earlier today and it went
well, the two issues that we noticed[1][2] have already been fixed.

[1] https://phabricator.wikimedia.org/T290677
[2] https://phabricator.wikimedia.org/T290676

-- Kunal
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