Due to production optimization, the following wikis have been moved on eqiad datacenter (the one where wikireplicas[0] live) from s3 to s5:

cebwiki enwikivoyage mgwiktionary shwiki srwiki

s3 will still contain the other 900+ wikis and s5 will still contain dewiki, with no further changes.

This means you will have to use s5.labsdb instead of s3.labsdb to access the 5 wikis above. No change will be needed if you use wiki-specific endpoints (e.g. shwiki.analytics.svc.eqiad.wmflabs). This is unlikely to create any issues because both of the 2 endpoints above point to the same proxy and database servers. The meta_p database, which is the canonical place to check that information has been updated accordingly (so tools like [1] caught it with no change needed). The proxy change will be deployed next week.

A reminder that even if that means no changes are technically needed because accessing s3.labsdb will also give you access to s5 data and vice-versa, please remember we don't discard in the future having different proxies and servers for different slices of data due to not being physically able to store all data from wikis in a single server for the wikireplica service.

If someone is curious why the movement, those 5 wikis total 500-1TB of data on production, so we needed to move them to servers with more available disk [2]. The change on production will take effect after the switchback datacenter.

Thank you for your understanding, [0] <url: https://wikitech.wikimedia.org/wiki/Help:Toolforge/Database#Connecting_to_th...

[1] url:https://tools.wmflabs.org/replag/ [2] url:https://phabricator.wikimedia.org/T184805