Today is when the Amazon brain drain sent AWS down the spout

Re:Today is when the Amazon brain drain sent AWS down the spout by anon7000 on Monday October 20, 2025 @08:17PM (#45651028)

I don’t think that’s true, there was an initial Dynamo outage that was resolved in the wee hours that ultimately cascaded into the ec2 problem that lasted most of the day

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Re:Today is when the Amazon brain drain sent AWS down the spout by nijave on Monday October 20, 2025 @08:27PM (#45651085)

Was the Dynamo outage separate? My take was the NLB issue was the root cause and Dynamo was a symptom which they flipped some internal switches to mitigate the impact to that dependency

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Re:Today is when the Amazon brain drain sent AWS down the spout by easton on Monday October 20, 2025 @08:59PM (#45651302)

If their internal NLB monitoring can delete the A record for dynamodb that seems like a weird dependency (like, i can imagine the nlb going missing entirely can cause it to clean up via some weird orchestration, but this didn't sound like that).

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Re:Today is when the Amazon brain drain sent AWS down the spout by nijave on Tuesday October 21, 2025 @09:37AM (#45655652)

I was thinking more along the lines of the NLB being in front of DNS servers and dropping resolvers

Or an NLB could also be load balancing by managing DNS records--it's not really clear what a NLB means in this context

Or there was an overload condition because of the NLB malfunctioning that caused UDP traffic to get dropped

Obviously a lot of reading between the lines is required without a detailed RCA--hopefully they release more info

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