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KB-2067: Why UID/GID is set to "nobody" when new files created via NFSv4?

Auditing and Monitoring Service ,   Authentication Service ,   Mac & PC Management Service ,  

12 April,16 at 11:07 AM

Applies to: All versions of Centrify DirectControl on Centos 5.x and RedHat 5.x with Kerberos-enabled NFSv4

Problem:
After you have successfully mounted to a NFS server (NetApp filer) using Kerberos-enabled NFSv4, any files you attempt to create on a mounted share results in UID/GID being reverted back to "nobody" even though you have proper read/write permissions to the share.

Note:  This used to work fine with NFSv3 - where it was uid/gid based, while NFSv4 is now name based.

Solution:
On NFS server, you need to check NetApp settings by executing:
# options nfs.v4.id.domain

For RedHat NFSv4,  check /etc/idmapd.conf, this is case sensitive (please use lower case).  For more information, please refer to this link:
http://blogs.sun.com/nfsv4/entry/q6_how_do_i_change

Centrify Corporation does not take any responsibility for the content or availability of this link and it was provided as a courtesy.  Customers should contact the vendor if there are any further questions.

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