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https://downdetector.com/archive https://downdetector.com/archive So many sites down... and unfortunately not one of them is Twitter

cpgeier 5y ago
Amazing that down detector manages to stay up during these kinds of outages. Noticed it has been a little slow but they really have done a good job keeping it up even though large portions of the internet is down right now.
- mindcrime 5y ago
  Who detects if Down Detector is down? Is there a isdowndetectordown.com site?
  - mcintyre1994 5y ago
    It's parked by GoDaddy, but unfortunately their website is fubar by this outage if you try to click through to see how much they want for it :)
  - ksec 5y ago
    I guess the mother of all Network Downtime checker is HN.
  - cube00 5y ago
    "I dunno. Coast Guard?"
  - SahAssar 5y ago
    Sounds like when Fuckedcompany put itself on Fuckedcompany.
mcintyre1994 5y ago
It's interesting that they report an AWS outage but there don't seem to be any issues there. Looks like their methodology is a bit too reliant on those speculative tweets from the first 5 minutes of all these sites going down. https://downdetector.com/status/aws-amazon-web-services/ https://downdetector.com/status/aws-amazon-web-services/ > So many websites are down, are AWS servers down or something? > Amazon web services is down which is affecting a lot of company web sites and services. Not sure what is going on. > Miss us? @aldotcom and a whole bunch of other folks have been knocked off the internet by what appears to be an AWS attack/system failure. We'll be back. ?
- mandelbrotwurst 5y ago
  It’s just based on user reports, so this is people mischaracterizing it as an AWS outage.
  - mcintyre1994 5y ago
    Yep that's my point. I'm guessing that for a lot of sites they can verify if there's an outage pretty easily when they see a spike in reports, but for something like AWS unless they updated their status page (lol) or downdetector ran a bunch of stuff on there just to check with, I guess they don't have a good way to verify it.
    - mandelbrotwurst 5y ago
      Gotcha, yeah I guess I always just considered that out of scope for their service and that it’s just a report aggregator but I suppose you would expect it to be at least a little bit clever based on the “detector” name
  - jacob019 5y ago
    cloudfront was down too
grawprog 5y ago
You got your wish, looks like Twitter's on the list now too.
dheera 5y ago
Is there a way to tell your system to fall back to the last known IP address if DNS server isn't reachable? Basically soft-invalidate your local DNS cache but it back from the cache graveyard if DNS is down.
- bombcar 5y ago
  It should be possible to set your cache so it lives forever but still checks for a new IP at normal expiring time.
- deleted 5y ago
  [deleted]
- TimWolla 5y ago
  Unbound has a 'serve-expired' option: https://nlnetlabs.nl/documentation/unbound/unbound.conf/#serve-expired https://nlnetlabs.nl/documentation/unbound/unbound.conf/#ser...
- elithrar 5y ago
  You could run a local resolver like dnsmasq or Unbound that can “serve stale” on upstream failures, but that assumes the DNS failure is a client-facing resolver one. From what I observed here, it was more internal DNS related: Newegg was serving an opaque “DNS failure” error page from Akamai’s front-end which is likely because their infra was failing to resolve names internally.
1f60c 5y ago
> Unfortunately not one of them is Twitter Please keep comments like this off HN

cpgeier 5y ago

Amazing that down detector manages to stay up during these kinds of outages. Noticed it has been a little slow but they really have done a good job keeping it up even though large portions of the internet is down right now.

mindcrime 5y ago
Who detects if Down Detector is down? Is there a isdowndetectordown.com site?
- mcintyre1994 5y ago
  It's parked by GoDaddy, but unfortunately their website is fubar by this outage if you try to click through to see how much they want for it :)
- ksec 5y ago
  I guess the mother of all Network Downtime checker is HN.
- cube00 5y ago
  "I dunno. Coast Guard?"
- SahAssar 5y ago
  Sounds like when Fuckedcompany put itself on Fuckedcompany.

mcintyre1994 5y ago

It's interesting that they report an AWS outage but there don't seem to be any issues there. Looks like their methodology is a bit too reliant on those speculative tweets from the first 5 minutes of all these sites going down. https://downdetector.com/status/aws-amazon-web-services/ https://downdetector.com/status/aws-amazon-web-services/ > So many websites are down, are AWS servers down or something? > Amazon web services is down which is affecting a lot of company web sites and services. Not sure what is going on. > Miss us? @aldotcom and a whole bunch of other folks have been knocked off the internet by what appears to be an AWS attack/system failure. We'll be back. ?

mandelbrotwurst 5y ago
It’s just based on user reports, so this is people mischaracterizing it as an AWS outage.
- mcintyre1994 5y ago
  Yep that's my point. I'm guessing that for a lot of sites they can verify if there's an outage pretty easily when they see a spike in reports, but for something like AWS unless they updated their status page (lol) or downdetector ran a bunch of stuff on there just to check with, I guess they don't have a good way to verify it.
  - mandelbrotwurst 5y ago
    Gotcha, yeah I guess I always just considered that out of scope for their service and that it’s just a report aggregator but I suppose you would expect it to be at least a little bit clever based on the “detector” name
- jacob019 5y ago
  cloudfront was down too

grawprog 5y ago

You got your wish, looks like Twitter's on the list now too.

dheera 5y ago

Is there a way to tell your system to fall back to the last known IP address if DNS server isn't reachable? Basically soft-invalidate your local DNS cache but it back from the cache graveyard if DNS is down.

bombcar 5y ago
It should be possible to set your cache so it lives forever but still checks for a new IP at normal expiring time.
deleted 5y ago
[deleted]
TimWolla 5y ago
Unbound has a 'serve-expired' option: https://nlnetlabs.nl/documentation/unbound/unbound.conf/#serve-expired https://nlnetlabs.nl/documentation/unbound/unbound.conf/#ser...
elithrar 5y ago
You could run a local resolver like dnsmasq or Unbound that can “serve stale” on upstream failures, but that assumes the DNS failure is a client-facing resolver one. From what I observed here, it was more internal DNS related: Newegg was serving an opaque “DNS failure” error page from Akamai’s front-end which is likely because their infra was failing to resolve names internally.

1f60c 5y ago

> Unfortunately not one of them is Twitter Please keep comments like this off HN