On Thu, 2026-10-15 at 17:13 +0200, Michael Bennett wrote: > Existing files under http://archive.debian.org/debian/pool/main/ > (bullseye) intermittently return 404 Not Found when a request misses > the CDN cache. The 404 page is generated by the origin Apache, and > the CDN then caches it. The same URL returns 206 or 404 on successive > requests. [...] > This looks like some back-end servers behind archive.debian.org > missing parts of the bullseye pool, or not being in sync with the > others.
One backend server, specifically. The server recently suffered a RAID controller failure that corrupted its filesystem, so is currently being re-populated. I thought it was fully out of rotation in the meantime, but had overlooked that the archive.debian.org healthcheck works differently than that for other origins. I've now tweaked the permissions so that the healthchecks will fail, and the CDN will no longer attempt to fetch files from that backend until the sync is complete. Apologies for the inconvenience. Regards, Adam
