what is rpc-svcgssd.service ?

[lejeczek]

Hi guys.

A complete amateur when it comes to Ubuntu - I am - so go 
easy on me.

I don't use nfs server,, it's not set up,  I think this 
below started to show after I installed nfs tools/client 
which I don't really use, not in an automated/system/service 
way.

Yet I get:

-> $ systemctl status -l rpc-svcgssd.service
× rpc-svcgssd.service - RPC security service for NFS server
      Loaded: loaded 
(/lib/systemd/system/rpc-svcgssd.service; static)
      Active: failed (Result: exit-code) since Fri 
2025-11-21 08:37:36 CET; 3h 47min ago
         CPU: 2ms

Nov 21 08:37:36 ubusrv1.ubuntus.internal systemd[1]: 
Starting RPC security service for NFS server...
Nov 21 08:37:36 ubusrv1.ubuntus.internal rpc.svcgssd[668]: 
Setting log level to 0
Nov 21 08:37:36 ubusrv1.ubuntus.internal rpc.svcgssd[675]: 
ERROR: GSS-API: error in gss_acquire_cred(): GSS_S_NO_CRED 
(No credentials were supplied, or the credentials were 
unavailable or inaccessible) - No key table entry found 
matching nfs/@
Nov 21 08:37:36 ubusrv1.ubuntus.internal rpc.svcgssd[675]: 
unable to obtain root (machine) credentials
Nov 21 08:37:36 ubusrv1.ubuntus.internal rpc.svcgssd[675]: 
do you have a keytab entry for nfs/<your.host>@<YOUR.REALM> 
in/etc/krb5.keytab?
Nov 21 08:37:36 ubusrv1.ubuntus.internal systemd[1]: 
rpc-svcgssd.service: Control process exited, code=exited, 
status=1/FAILURE
Nov 21 08:37:36 ubusrv1.ubuntus.internal systemd[1]: 
rpc-svcgssd.service: Failed with result 'exit-code'.
Nov 21 08:37:36 ubusrv1.ubuntus.internal systemd[1]: Failed 
to start RPC security service for NFS server.

I'm hoping - with your help - to understand: a) what that is 
for; b) why my ubuntu decided it is "suddenly" needed.
But also - where it comes from since - as a service - it's 
not enabled to start nor other services which might need it are.

ubuntu 22.04

many thanks, L.
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