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Why can authentication show-creds not be used for NFS user credentials?

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Category:
ontap-9
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NAS
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Applies to

  • ONTAP 9
  • CIFS
  • NFS

Answer

  • authentication show-creds will fail if CIFS is not configured as it requires both Unix and Windows parts of the credentials due to namemapping

Example:

cluster1::*> vserver services access-check authentication show-creds -node cluster1-01 -vserver svm1 -unix-user-name root

Vserver: svm1 (internal ID: 6)

Error: Get user credentials procedure failed
  [  0 ms] Determined UNIX id 12345 is UNIX user 'userx'
  [     0] Trying to map 'userx' to Windows user 'userx' using
           implicit mapping
  [     0] Could not find Windows name 'userx'
  [     0] Unable to map 'userx'. No default Windows user defined.
**[     0] FAILURE: Name mapping for UNIX user 'userx' failed. No
**         mapping found

Error: command failed: Failed to get user credentials. Reason: "SecD Error: Name mapping does not exist".

  • If only unix security style volumes or qtrees configured, and no need for CIFS: authentication show-creds is not useful
  • If mixed or ntfs security style volumes or qtrees configured, and cannot set up CIFS: convert volume and/or qtree to unix security style
  • Otherwise, set up CIFS

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