Mounting with Kerberos+NFSv4 fails with "Permission denied" error message.

Issue

• While mounting nfs4 share in an IPA environment it fails with an error message "Permission denied".

# mount -t nfs4 -vvv -o sec=krb5,proto=tcp nfsserver.example.com:/share /mnt
mount.nfs4: Permission denied

• Relevant "/var/log/message" logs from the NFS client

Jul 12 17:01:43 nfsserver 1 rpc.gssd[24336]: rpcsec_gss: gss_init_sec_context: (major) Unspecified GSS failure.  Minor code may provide more information - (minor) Server not found in Kerberos database 
Jul 12 17:01:43 nfsserver rpc.gssd[24336]: WARNING: Failed to create krb5 context for user with uid 0 for server nfsserver.domain.com 
Jul 12 17:01:43 nfsserver rpc.gssd[24336]: WARNING: Failed to create krb5 context for user with uid 0 with credentials cache MEMORY:/tmp/krb5cc_machine_CHILD.EXAMPLE.COM for server nfsserver.example.com 
Jul 12 17:01:43 nfsserver rpc.gssd[24336]: WARNING: Failed to create krb5 context for user with uid 0 with any credentials cache for server nfsserver.example.com