[jira] [Created] (TS-2358) DNS does not fail-over promptly for DNS server returning SERVFAIL

["William Bardwell (JIRA)" <ji...@apache.org>]

William Bardwell created TS-2358:
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             Summary: DNS does not fail-over promptly for DNS server returning SERVFAIL
                 Key: TS-2358
                 URL: https://issues.apache.org/jira/browse/TS-2358
             Project: Traffic Server
          Issue Type: Bug
          Components: DNS
            Reporter: William Bardwell


If I have 2 dns servers listed in my resolv.conf and the first one is returning SERVFAIL for something that I try to lookup, ATS takes a long time to fail over, and won't do it for the first request to look something up.  Using normal system commands (host, ping etc.) with the same resolv.conf work fine.

I tried various config values with out much improvement.  I could make it fail in 40sec instead of 60sec for the initial failure...

debug logs will be attached, doing one DNS and then waiting a while and doing another.  (Doing more before enough time has passed don't seem to help much.)





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