If you're running NFSv4 check to make sure rpc.idmapd is running on all those machines. (I would confirm first whether NFS mounts are using v3 or v4 by checking the output of mount.) On 12/20/2012 03:40 PM, Eve V. E. Kovacs wrote: > Yes, home directories are nfs mounted from a separate file server > Eve > > On Thu, 20 Dec 2012, Daniel M. Weeks wrote: > >> Date: Thu, 20 Dec 2012 12:51:24 -0600 >> From: Daniel M. Weeks <[log in to unmask]> >> To: Eve V. E. Kovacs <[log in to unmask]> >> Cc: [log in to unmask] >> Subject: Re: key problem with ldap >> >> On 12/19/2012 02:50 PM, Eve V. E. Kovacs wrote: >>> I just switched a bunch of SL5 and SL6 machines to use ldap >>> authentication. They seem to be working more or less, in that everyone can log >>> in, see their files, etc. However, on the SL6 >>> machines only, /var/log/secure is filled with messages like: >>> >>> request-key: Cannot find command to construct key >>> >>> Does anyone happen to know what is causing this and how to stop it? >>> >>> Thanks >>> Eve >>> *************************************************************** >>> Eve Kovacs >>> Argonne National Laboratory, >>> Room L-177, Bldg. 360, HEP >>> 9700 S. Cass Ave. >>> Argonne, IL 60439 USA >>> Phone: (630)-252-6208 >>> Fax: (630)-252-5047 >>> email: [log in to unmask] >>> *************************************************************** >>> >> >> Hi Eve, >> >> Are home directories/commonly accessed files in an NFS-mounted directory? >> >> -- >> Daniel M. Weeks >> Systems Administrator >> Computational Center for Nanotechnology Innovations >> Rensselaer Polytechnic Institute >> Troy, NY 12180 >> 518-276-4458 >> > > *************************************************************** > Eve Kovacs > Argonne National Laboratory, > Room L-177, Bldg. 360, HEP > 9700 S. Cass Ave. > Argonne, IL 60439 USA > Phone: (630)-252-6208 > Fax: (630)-252-5047 > email: [log in to unmask] > *************************************************************** > -- Daniel M. Weeks Systems Administrator Computational Center for Nanotechnology Innovations Rensselaer Polytechnic Institute Troy, NY 12180 518-276-4458