Slow response from DNS servers causes DNS timeouts

Applies to

• ONTAP 9
• Domain Name Service (DNS)

Issue

• A timeout occurs when DNS does not respond within the configured timeout period
• 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 }