Hi I follow the https://help.ubuntu.com/community/SettingUpNFSHowTo guid to install nfs server on ubuntu 12.04 64 bit server, but when I tried to start the server I get

ubuntu# service nfs-kernel-server restart
 * Stopping NFS kernel daemon`                                            [ OK ] 
 * Unexporting directories for NFS kernel daemon...                      [ OK ] 
 * Exporting directories for NFS kernel daemon...                        [ OK ] 
 * Starting NFS kernel daemon [fail]

I want to see why it fail but I can`t find any log?

  1. where are the nfs server logs?

  2. Is there something I am missing here?

I find the error logs in /var/syslog

thanks to the comments now I see the folowing errors:

Jan  6 18:23:46 ip- kernel: [9107084.728144] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
Jan  6 18:23:46 ip- kernel: [9107084.728166] NFSD: starting 90-second grace period
Jan  6 18:23:46 ip- rpc.svcgssd[6526]: ERROR: GSS-API: error in gss_acquire_cred(): GSS_S_FAILURE (Unspecified GSS failure.  Minor code may provide more information) - 
Jan  6 18:23:46 ip- rpc.svcgssd[6526]: unable to obtain root (machine) credentials
Jan  6 18:23:46 ip- rpc.svcgssd[6526]: do you have a keytab entry for nfs/<your.host>@<YOUR.REALM> in /etc/krb5.keytab?

What is keytab? why there in nothing about in in the official ubuntu guide ?

  • 1
    have you looked in /var/log/messages or /var/log/syslog?
    – GeoSword
    Jan 6, 2014 at 17:54
  • Now i can see some of the errors in syslog
    – talsibony
    Jan 6, 2014 at 18:00
  • @GeoSword I see some error code should I edit the original question or paste them in other link ?
    – talsibony
    Jan 6, 2014 at 18:05
  • Looks like something Kerberos related. Are you using Kerberos to authenticate?
    – GeoSword
    Jan 6, 2014 at 20:40
  • No, I do not use it and I manage to start the service when I wasent root user
    – talsibony
    Jan 6, 2014 at 21:06

1 Answer 1


The only problem is that nfs-kernel-server not started because I was trying to run it as root, when I switch to other user and used sudo it started.

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