When performing a kerberos nfs mount, why does rpc.gssd log 'No credentials found for connection to server'?

Solution Verified - Updated -

Issue

My nfsv4/kerberos mount attempt is failing. After configuring

SECURE_NFS="yes"

and

RPCGSSDARGS="-v -v -v"

in /etc/sysconfig/nfs I see the following output:

#  mount -t nfs4 -o sec=krb5 nfsserver:/homedir /mnt
[..]
nfsclient rpc.gssd[4653]: handling gssd upcall (/var/lib/nfs/rpc_pipefs/nfs/clnt41)
nfsclient rpc.gssd[4653]: handle_gssd_upcall: 'mech=krb5 uid=0 enctypes=18,17,16,23,3,1,2 '
nfsclient rpc.gssd[4653]: handling krb5 upcall (/var/lib/nfs/rpc_pipefs/nfs/clnt41)
nfsclient rpc.gssd[4653]: process_krb5_upcall: service is '<null>'
nfsclient rpc.gssd[4653]: Full nfsclient for 'nfsserver.example.org' is 'nfsserver.example.org'
nfsclient rpc.gssd[4653]: Full nfsclient for 'nfsclient.example.org' is 'nfsclient.example.org'
nfsclient rpc.gssd[4653]: No key table entry found for NFSCLIENT.EXAMPLE.ORG$@EXAMPLE.ORG while getting keytab entry for 'NFSCLIENT.EXAMPLE.ORG$@EXAMPLE.ORG'
nfsclient rpc.gssd[4653]: No key table entry found for root/nfsclient.example.org@EXAMPLE.ORG while getting keytab entry for 'root/nfsclient.example.org@EXAMPLE.ORG'
nfsclient rpc.gssd[4653]: Success getting keytab entry for 'nfs/nfsclient.example.org@EXAMPLE.ORG'
nfsclient rpc.gssd[4653]: WARNING: Client 'nfs/nfsclient.example.org@EXAMPLE.ORG' not found in Kerberos database while getting initial ticket for principal 'nfs/nfsclient.example.org@EXAMPLE.ORG' using keytab 'WRFILE:/etc/krb5.keytab'
nfsclient rpc.gssd[4653]: ERROR: No credentials found for connection to server nfsserver.example.org
nfsclient rpc.gssd[4653]: doing error downcall
[..]
mount.nfs4: access denied by server while mounting nfsserver:/exportdir
[..]
nfsclient rpc.gssd[4653]: destroying client /var/lib/nfs/rpc_pipefs/nfs/clnt42
nfsclient rpc.gssd[4653]: destroying client /var/lib/nfs/rpc_pipefs/nfs/clnt41

Environment

  • Red Hat Enterprise Linux (RHEL) 6 as nfsclient
  • Microsoft Windows 2012 as NFS server
  • kerberos

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In