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LDAP authentication check failing on ONTAP cluster

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Applies to

  • ONTAP 9
  • LDAP/LDAPS

Issue

  • LDAP authentication validation fails on the ONTAP cluster.
  • LDAP users are unable to authenticate successfully.
  • LDAP connectivity checks to the configured LDAP servers report failures.
  • User lookup and authentication requests fails.
  • Example Error Output:

cluster::*> ldap check -vserver svm01
                  Vserver: svm01
Client Configuration Name: LDAP_config
              LDAP Status: down
      LDAP Status Details: Error: Validate the Ldap configuration procedure failed
  [ 13 ms] Resolved LDAP servers: 10.xx.xx.xx, 10.xx.xx.xx.
           Vserver: 2
**[   177] FAILURE: Could not authenticate as
** 'user@domain.COM': Cannot find KDC for
**         requested realm (KRB5_REALM_UNKNOWN)
  [  2182] TCP connection to ip 10.xx.xx.xx, port 636 failed:
           Operation timed out.
  [  2183] Unable to start LDAPS: Can't contact LDAP server
  [ 2183] Unable to connect to LDAP (NIS & Name Mapping) service on <server> (Error: Can't contact LDAP server)
  [  2193] Could not authenticate as 'user@domain.COM':
           Cannot find KDC for requested realm (KRB5_REALM_UNKNOWN)
  [  4193] TCP connection to ip 10.xx.xx.xx, port 636 failed: Operation timed out.
  [  4195] Unable to start LDAPS: Can't contact LDAP server
  [  4195] Unable to connect to LDAP (NIS & Name Mapping) service on
 <server> (Error: Can't contact LDAP server)
  [  4196] No servers available for LDAP_NIS_AND_NAME_MAPPING,
           vserver: 2, domain: .
  [  4196] Unable to make a connection (LDAP (NIS & Name Mapping):),
         Result: RESULT_ERROR_SECD_NO_SERVER_AVAILABLE
   LDAP DN Status Details: No LDAP DN configured

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