Bumping this thread as we're still seeing the DNS anomalies. On Tuesday, 12 March 2019 19:43:05 UTC+1, Dorian Kind wrote: > > Hi, > > since March 7, we've experienced lots of timeouts and reset connections > when calling the Sheets API. > > After drilling down a bit, we realized that on the affected hosts, DNS > queries for sheets.googleapis.com (which is a CNAME for > googleapis.l.google.com) would always only return a single record, > 74.125.193.95 to be specific. All of these hosts are Amazon EC2 instances > in the eu-west-1 region. > > Normally, if we resolve *.googleapis.com from any other host (including > EC2 instances in other regions), we always get a list of records back, > which seems to indicate a form of round-robin load balancing. While the > DNS peculiarity doesn't necessarily has to be related to the connection > issues we've been seeing, it's at least an odd coincidence. > > Note that the symptoms are not exclusive to the sheets API—any of Google's > APIs that has endpoints on googleapis.com and which we use has shown the > timeouts and reset connections mentioned above. > > I have created an entry on Google's issue tracker, but I'd be interested > if there's anyone else that has also noticed similar symptoms. > > Thanks for any feedback and best regards, > Dorian >
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