What happens
mirrors.wikimedia.org will be sunset on May 15.
What do I need to do?
Probably nothing. This is not a widely used service. If you use the service via the Debian mirror rotation one of the many other servers will take over. If you have actively configured mirrors.wikimedia.org in your APT configuration on Debian/Ubuntu (desktop, virtual machine or server) you need to switch to a different server. This shouldn’t take more than a minute. You can find alternatives on https://www.debian.org/mirror/list and https://launchpad.net/ubuntu/+cdmirrors. If you use Windows or Mac you will not be affected.
Why
The usefulness of this service has diminished over time. Since the initial creation Debian has built a CDN (deb.debian.org) to provide Debian packages and most systems use it today for more fine-grained geographical access and overall better resiliency.
The service is not behind the Wikimedia CDN which provides all the countermeasures to aggressive scraping. Sometimes AI scrapers degrade the service temporarily and moving it behind the CDN would involve substantial engineering efforts. The hardware running the mirror server is at its estimated lifetime and would need to be replaced.
Since it is no longer needed the way it was when it was created, we can be of more use to the Wikimedia movement by spending these resources elsewhere.
Where can I follow the process?
This Phabricator ticket: https://phabricator.wikimedia.org/T416707
Cheers, Moritz
All MediaWiki-Docker instances are configured to use mirrors.wikimedia.org. Breaking this would potentially break all of CI and the setups of effectively a large majority of those who develop software for MediaWiki.
Regards, Sohom Datta --- Open-source contributor @Wikimedia
On Thu, Apr 16, 2026 at 9:04 AM Moritz Mühlenhoff via Wikitech-l < wikitech-l@lists.wikimedia.org> wrote:
What happens
mirrors.wikimedia.org will be sunset on May 15.
What do I need to do?
Probably nothing. This is not a widely used service. If you use the service via the Debian mirror rotation one of the many other servers will take over. If you have actively configured mirrors.wikimedia.org in your APT configuration on Debian/Ubuntu (desktop, virtual machine or server) you need to switch to a different server. This shouldn’t take more than a minute. You can find alternatives on https://www.debian.org/mirror/list and https://launchpad.net/ubuntu/+cdmirrors. If you use Windows or Mac you will not be affected.
Why
The usefulness of this service has diminished over time. Since the initial creation Debian has built a CDN (deb.debian.org) to provide Debian packages and most systems use it today for more fine-grained geographical access and overall better resiliency.
The service is not behind the Wikimedia CDN which provides all the countermeasures to aggressive scraping. Sometimes AI scrapers degrade the service temporarily and moving it behind the CDN would involve substantial engineering efforts. The hardware running the mirror server is at its estimated lifetime and would need to be replaced.
Since it is no longer needed the way it was when it was created, we can be of more use to the Wikimedia movement by spending these resources elsewhere.
Where can I follow the process?
This Phabricator ticket: https://phabricator.wikimedia.org/T416707
Cheers, Moritz _______________________________________________ Wikitech-l mailing list -- wikitech-l@lists.wikimedia.org To unsubscribe send an email to wikitech-l-leave@lists.wikimedia.org https://lists.wikimedia.org/postorius/lists/wikitech-l.lists.wikimedia.org/
Also, personally, I feel a bit burnt out by the tone and wording of the last part of this message "Since it is no longer needed by us, (and y'all don't matter) we will use the money somewhere else" in the context of the recent "rug pull" (for the lack of a better term) of multiple public and open services being removed as part of a fight against scrapers (to mention a few: media reuse, Etherpad, API rate limits on normal APIs, and now mirrors?).
These are services that well-meaning open-source contributors used to take away and share with others, as "hey, this is something that you can depend on cause it is managed by Wikimedia." I've personally recommended Etherpad and mirrors to individuals in my friend circle as stable endpoints that they can use. I've seen people out of the blue recommend Etherpad and have found them to be former contributors to the movement or former WMF staff members. Removing/lobotomizing/signaling that these services are not durable and there is no intention of properly maintaining them burns goodwill with the open-source community at large and makes it very hard for folks to recommend "hey, use this service that Wikimedia provides," because you are not sure if it will be sunset again.
Regards, Sohom Datta --- Open-source contributor @Wikimedia
On Thu, Apr 16, 2026 at 10:51 AM Sohom Datta dattasohom1@gmail.com wrote:
All MediaWiki-Docker instances are configured to use mirrors.wikimedia.org. Breaking this would potentially break all of CI and the setups of effectively a large majority of those who develop software for MediaWiki.
Regards, Sohom Datta
Open-source contributor @Wikimedia
On Thu, Apr 16, 2026 at 9:04 AM Moritz Mühlenhoff via Wikitech-l < wikitech-l@lists.wikimedia.org> wrote:
What happens
mirrors.wikimedia.org will be sunset on May 15.
What do I need to do?
Probably nothing. This is not a widely used service. If you use the service via the Debian mirror rotation one of the many other servers will take over. If you have actively configured mirrors.wikimedia.org in your APT configuration on Debian/Ubuntu (desktop, virtual machine or server) you need to switch to a different server. This shouldn’t take more than a minute. You can find alternatives on https://www.debian.org/mirror/list and https://launchpad.net/ubuntu/+cdmirrors. If you use Windows or Mac you will not be affected.
Why
The usefulness of this service has diminished over time. Since the initial creation Debian has built a CDN (deb.debian.org) to provide Debian packages and most systems use it today for more fine-grained geographical access and overall better resiliency.
The service is not behind the Wikimedia CDN which provides all the countermeasures to aggressive scraping. Sometimes AI scrapers degrade the service temporarily and moving it behind the CDN would involve substantial engineering efforts. The hardware running the mirror server is at its estimated lifetime and would need to be replaced.
Since it is no longer needed the way it was when it was created, we can be of more use to the Wikimedia movement by spending these resources elsewhere.
Where can I follow the process?
This Phabricator ticket: https://phabricator.wikimedia.org/T416707
Cheers, Moritz _______________________________________________ Wikitech-l mailing list -- wikitech-l@lists.wikimedia.org To unsubscribe send an email to wikitech-l-leave@lists.wikimedia.org
https://lists.wikimedia.org/postorius/lists/wikitech-l.lists.wikimedia.org/
Hi Sohom,
Thanks for pointing this out. The concern is captured in the tracking task and we'll update this thread with information on migrating the images to the Debian CDN.
As for your second comment, I understand where you're coming from. A alsot the same time I would like to point to the "be of more use to the Wikimedia movement by spending these resources elsewhere" part - it's not that "y'all don't matter", it's about focusing on services that cannot be easily replaced by available, and in this case better, alternatives.
On Thu, Apr 16, 2026 at 5:20 PM Sohom Datta via Wikitech-l < wikitech-l@lists.wikimedia.org> wrote:
Also, personally, I feel a bit burnt out by the tone and wording of the last part of this message "Since it is no longer needed by us, (and y'all don't matter) we will use the money somewhere else" in the context of the recent "rug pull" (for the lack of a better term) of multiple public and open services being removed as part of a fight against scrapers (to mention a few: media reuse, Etherpad, API rate limits on normal APIs, and now mirrors?).
These are services that well-meaning open-source contributors used to take away and share with others, as "hey, this is something that you can depend on cause it is managed by Wikimedia." I've personally recommended Etherpad and mirrors to individuals in my friend circle as stable endpoints that they can use. I've seen people out of the blue recommend Etherpad and have found them to be former contributors to the movement or former WMF staff members. Removing/lobotomizing/signaling that these services are not durable and there is no intention of properly maintaining them burns goodwill with the open-source community at large and makes it very hard for folks to recommend "hey, use this service that Wikimedia provides," because you are not sure if it will be sunset again.
Regards, Sohom Datta
Open-source contributor @Wikimedia
On Thu, Apr 16, 2026 at 10:51 AM Sohom Datta dattasohom1@gmail.com wrote:
All MediaWiki-Docker instances are configured to use mirrors.wikimedia.org. Breaking this would potentially break all of CI and the setups of effectively a large majority of those who develop software for MediaWiki.
Regards, Sohom Datta
Open-source contributor @Wikimedia
On Thu, Apr 16, 2026 at 9:04 AM Moritz Mühlenhoff via Wikitech-l < wikitech-l@lists.wikimedia.org> wrote:
What happens
mirrors.wikimedia.org will be sunset on May 15.
What do I need to do?
Probably nothing. This is not a widely used service. If you use the service via the Debian mirror rotation one of the many other servers will take over. If you have actively configured mirrors.wikimedia.org in your APT configuration on Debian/Ubuntu (desktop, virtual machine or server) you need to switch to a different server. This shouldn’t take more than a minute. You can find alternatives on https://www.debian.org/mirror/list and https://launchpad.net/ubuntu/+cdmirrors. If you use Windows or Mac you will not be affected.
Why
The usefulness of this service has diminished over time. Since the initial creation Debian has built a CDN (deb.debian.org) to provide Debian packages and most systems use it today for more fine-grained geographical access and overall better resiliency.
The service is not behind the Wikimedia CDN which provides all the countermeasures to aggressive scraping. Sometimes AI scrapers degrade the service temporarily and moving it behind the CDN would involve substantial engineering efforts. The hardware running the mirror server is at its estimated lifetime and would need to be replaced.
Since it is no longer needed the way it was when it was created, we can be of more use to the Wikimedia movement by spending these resources elsewhere.
Where can I follow the process?
This Phabricator ticket: https://phabricator.wikimedia.org/T416707
Cheers, Moritz _______________________________________________ Wikitech-l mailing list -- wikitech-l@lists.wikimedia.org To unsubscribe send an email to wikitech-l-leave@lists.wikimedia.org
https://lists.wikimedia.org/postorius/lists/wikitech-l.lists.wikimedia.org/
Wikitech-l mailing list -- wikitech-l@lists.wikimedia.org To unsubscribe send an email to wikitech-l-leave@lists.wikimedia.org https://lists.wikimedia.org/postorius/lists/wikitech-l.lists.wikimedia.org/
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