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Slow response from DNS servers causes DNS timeouts

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Category:
ontap-9
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nas
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Applies to

  • ONTAP 9
  • Domain Name Service (DNS)

Issue

  • A timeout occurs when DNS does not respond within the configured timeout period
  • The ping to the DNS server is responding normally.
  • The following errors are logged in EMS:

[NODENAME: mgwd: dns.server.timed.out:error]: DNS server x.x.x.x did not respond to vserver = svm3 within timeout interval.

Or raw EMS file log:

<secd_dns_server_timed_out_1
        ipaddr="x.x.x.x"
        vsName="vserver_name"/>

  • Errors might be seen in SECD.log:

ERR  :  NSLIBC: __res_nsend(), ../../../../../lib/libc/resolv/res_send.c:804, Vsid = 3 Timed out while connecting to DNS server: x.x.x.x via Source Address x.x.x.x. Error: Operation timed out
debug:  Logged secd.dns.server.timed.out to EMS.  { in logEmsEventForDnsError() at src/utils/secd_ems_utils.cpp:1035 }

 

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