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Telstra outage: The night a network decided the year was 2006

32 pointsby 4h agonetnod.se
10 comments
3h agoHN ↗

Shout out to the Jeff Geerling video about this

3h agoHN ↗

Author needs to decide which end of the stratum stack they want as the top.

This design from 2010 had at the top stratum 1 sources at Australia's National Measurement Institute (NMI)

Among otherwise comparable candidates, the lower stratum carries more weight.

2h agoHN ↗

Each decision solved the problem in front of it. Nobody was asked to look at the sum of all actions.

This is the perfect description of Telstra as a company.

33m agoHN ↗

This reminds me of this: https://obamawhitehouse.archives.gov/blog/2015/03/26/why-we-...

I saw the talk version of that and it has lodged in my memory. The point he made was that "health.gov" was made by a bunch of teams that made sure that their part worked, but nobody was in charge of making the whole thing work.

This is sadly "normal" for large bureaucracies.

Every time I see a giant, multi-million dollar catastrophe, it's always "proper", "documented", "enterprise", "by the book", and... "a total failure". The reason is always that nobody actually cares about the final outcome, only the paperwork in front of them that they need fill out, the checkbox that needs to be ticked, or the compliance requirement that needs to be met.

1h agoHN ↗

They're pretty readable, I recommend that second one (though it leaves some questions I have unanswered). It's a good example of how latent issues with a large system can go unrecognised for a long time before a seeming unrelated change can trigger a cascading failure

1h agoHN ↗

All I could think of while reading this was “has no one heard of ntptrace?”

1h agoHN ↗

It's funny, but I had the same thing happen to me once. One day, overnight, my computer decided it was 2006.

It happened twenty years ago...

;-)