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Vscan server disconnect due to Kerberos pre-authentication failure

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ontap-9
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nas
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Applies to

  • ONTAP 9
  • VSCAN
  • ONTAP AV Connector

Issue

  • VSCAN server is in disconnected status as the machine account on the domain-tunnel server has failed to authenticate to the domain server.

Cluster1::> vserver vscan connection-status show-all -vserver <vserver-name>
                             Connection
Vserver     Node              Server          Status         Disconnect Reason
----------- ----------------- --------------- -------------- -----------------

DataSVM     node1             10.x.y.z       disconnected          -

  • ONTAP AV connector polls cluster management LIF via domain user
  • AVShim log:
    • REST API call to  10.231.x.y> using account " domain1\user1" failed. The remote server returned an error: (401) Unauthorized.
  • EMS log from domain tunnel vserver:
    • Mon Jun 02 13:28:34 -0500 [vserver-name: secd: secd.kerberos.preauth:error]: A Kerberos pre-authentication failure occurred for SVM "domain-tunnel-vserver" due to invalid credentials for domain-tunnel-vserver$@domain.com.
    • Mon Jun 02 21:35:52 -0500 [vserver-name: secd: secd.kerberos.preauth:error]: A Kerberos pre-authentication failure occurred for SVM "domain-tunnel-server" due to out-of-sync machine account password.
    • Sun Jun 22 04:36:43 -0500 [hz-com-clsp-a04-s03: OffboxVScanTableUpd: Nblade.scannerDisconnected:notice]: Vserver "cpsprod-a0439" disconnected from Vscan server (IP: 10.x.y.z).

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