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

["Phil Sorber (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TS-2358?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Phil Sorber updated TS-2358:
----------------------------
    Assignee: Thomas Jackson  (was: Alan M. Carroll)

> 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
>    Affects Versions: 3.2.5
>            Reporter: William Bardwell
>            Assignee: Thomas Jackson
>             Fix For: sometime
>
>         Attachments: ats.dns.txt
>
>
> 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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