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A comment on Facebook-owned sites were down. Parent comment

Re:Facebook-owned sites were down by simlevesque on Monday October 04, 2021 @11:55AM (#28748392)
Maybe they tried everything else before that.

At first it was working but they couldn't serve responses: https://i.imgur.com/UaCtOiX.png

Notice the "2020"

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Re:Facebook-owned sites were down by rvnx on Monday October 04, 2021 @12:19PM (#28748873)
The servers struggle to reply a basic 5xx answer.

Two possibilities:

- the DNS services internally have issues (most likely, as this could explain the snowball effect)

- it could be also a core storage issue and all their VMs are relying on it and so they don't want to block third-party websites and think it will last for a long time, so they prefer to answer nothing for now in the DNS (so it will fail instantly to the client, and drain the application/database servers so they can reboot with less load)

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Re:Facebook-owned sites were down by zarzavat on Monday October 04, 2021 @12:39PM (#28749135)
I was on a video call during the incident. The service was working but with super-low bandwidth for 30 minutes, then I got disconnected and every FB property went down suddenly. Seems more suggestive of someone pulling the plug than a DNS issue, although it could also be both.
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