Bug#870694: rpc.svcgssd should silently exit

[Harald Dunkel <harald.dunkel@aixigo.de>]

Package: nfs-common
Version: 1:1.3.4-2.1

I am using NFS without Kerberos. Problem:

Aug  4 10:32:53 il06 rpc.svcgssd[18935]: ERROR: GSS-API: error in gss_acquire_cred(): GSS_S_FAILURE (Unspecified GSS failure.  Minor code may provide more information) - No key table entry found matching nfs/@
Aug  4 10:32:53 il06 rpc.svcgssd[18935]: unable to obtain root (machine) credentials
Aug  4 10:32:53 il06 rpc.svcgssd[18935]: do you have a keytab entry for nfs/<your.host>@<YOUR.REALM> in /etc/krb5.keytab?

This makes "systemctl status" report a degraded system:

il06:/var/log# systemctl status rpc-svcgssd.service
* rpc-svcgssd.service - RPC security service for NFS server
   Loaded: loaded (/lib/systemd/system/rpc-svcgssd.service; static; vendor preset: enabled)
   Active: failed (Result: exit-code) since Fri 2017-08-04 10:30:44 CEST; 7min ago
  Process: 18328 ExecStart=/usr/sbin/rpc.svcgssd $SVCGSSDARGS (code=exited, status=1/FAILURE)

Aug 04 10:30:44 il06.ac.aixigo.de systemd[1]: Starting RPC security service for NFS server...
Aug 04 10:30:44 il06.ac.aixigo.de systemd[1]: rpc-svcgssd.service: Control process exited, code=exited status=1
Aug 04 10:30:44 il06.ac.aixigo.de systemd[1]: Failed to start RPC security service for NFS server.
Aug 04 10:30:44 il06.ac.aixigo.de systemd[1]: rpc-svcgssd.service: Unit entered failed state.
Aug 04 10:30:44 il06.ac.aixigo.de systemd[1]: rpc-svcgssd.service: Failed with result 'exit-code'.


Would you mind to fix the conditions in rpc-svcgssd.service
accordingly?


Thanx in advance
Harri