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DNS timeout errors reported due to port 53 block in firewall

  1. Last updated
    Jun 14, 2024
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144
Visibility:
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0
Category:
ontap-9
Specialty:
nas
Last Updated:
6/14/2024, 10:58:23 AM

Applies to

  • ONTAP 9 and later
  • Domain name resolution (DNS)

Issue

  • DNS timeout errors observed in ems logs:
Wed Jan 31 00:30:01 +0000 [cluster1_01: mgwd: dns.server.timed.out:error]: DNS server 10.x.x.6 did not respond to vserver = CIFS_server within timeout interval.
 
  • DNS status is down due to operation time out:
xd462cl01::> vserver services name-service dns check -vserver CIFS_server
Name Server
Vserver       Name Server     Status       Status Details
------------- --------------- ------------ --------------------------
CIFS_server       10.x.x.6     down         Operation timed out.
1 entries were displayed.
 
  • Packet trace confirms the DNS is not responding for the ONTAP queries on port 53.

 

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