[Samba] NFSv4 / Krb / wildcard in keytab

L.P.H. van Belle belle at bazuin.nl
Thu Mar 31 09:31:08 UTC 2016 

Sorry, my previous was totaly wrong..  
Forget that one. 

Greetz, 

Louis


> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens L.P.H. van Belle
> Verzonden: donderdag 31 maart 2016 11:25
> Aan: samba at lists.samba.org
> Onderwerp: Re: [Samba] NFSv4 / Krb / wildcard in keytab
> 
> Try it like :
> 
> http/%s at DOMAIN.COM
> 
> not http/*@DOMAIN.COM
> 
> Greetz,
> 
> Louis
> 
> 
> > -----Oorspronkelijk bericht-----
> > Van: samba [mailto:samba-bounces at lists.samba.org] Namens Service
> > Informatique IF
> > Verzonden: donderdag 31 maart 2016 11:04
> > Aan: samba at lists.samba.org
> > CC: ifinfo at ujf-grenoble.fr
> > Onderwerp: [Samba] NFSv4 / Krb / wildcard in keytab
> >
> > Hi,
> >
> > I'm trying to use wildcard in keytab because i don't want join every
> > computer, client for service NFS krb5.
> >
> > I add a spn like this
> >
> > # samba-tool spn add host/* nfs
> >
> > (I create user nfs before)
> >
> > # samba-tool spn list nfs
> > nfs
> > User CN=nfs,CN=Users,DC=if,DC=ujf-grenoble,DC=fr has the following
> > servicePrincipalName:
> >           host/*
> >
> > I export keytab :
> >
> >   #samba-tool domain exportkeytab /tmp/wildcardnfs.keytab --
> > principal=host/*
> >
> > ktutil -k /tmp/wildcardnfs.keytab list
> > /tmp/wildcardnfs.keytab:
> >
> > Vno  Type              Principal                  Aliases
> >    1  des-cbc-crc       host/*@IF.UJF-GRENOBLE.FR
> >    1  des-cbc-md5       host/*@IF.UJF-GRENOBLE.FR
> >    1  arcfour-hmac-md5  host/*@IF.UJF-GRENOBLE.FR
> >
> >
> > I put this keytab on my client (name is bataille) and restart rpc.gssd -
> > vvvv
> >
> > I try to mount NFS and in my client log, I have :
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: No key table entry found for
> > root/bataille.ujf-grenoble.fr at IF.UJF-GRENOBLE.FR while getting keytab
> > entry for 'root/bataille.ujf-grenoble.fr at IF.UJF-GRENOBLE.FR'
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: No key table entry found for
> > nfs/bataille.ujf-grenoble.fr at IF.UJF-GRENOBLE.FR while getting keytab
> > entry for 'nfs/bataille.ujf-grenoble.fr at IF.UJF-GRENOBLE.FR'
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: No key table entry found for
> > host/bataille.ujf-grenoble.fr at IF.UJF-GRENOBLE.FR while getting keytab
> > entry for 'host/bataille.ujf-grenoble.fr at IF.UJF-GRENOBLE.FR'
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: Processing keytab entry for
> > principal 'host/*@IF.UJF-GRENOBLE.FR'
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: We will NOT use this entry
> > (host/*@IF.UJF-GRENOBLE.FR)
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: Processing keytab entry for
> > principal 'host/*@IF.UJF-GRENOBLE.FR'
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: We will NOT use this entry
> > (host/*@IF.UJF-GRENOBLE.FR)
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: Processing keytab entry for
> > principal 'host/*@IF.UJF-GRENOBLE.FR'
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: We will NOT use this entry
> > (host/*@IF.UJF-GRENOBLE.FR)
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: Processing keytab entry for
> > principal 'host/*@IF.UJF-GRENOBLE.FR'
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: We will NOT use this entry
> > (host/*@IF.UJF-GRENOBLE.FR)
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: Processing keytab entry for
> > principal 'host/*@IF.UJF-GRENOBLE.FR'
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: We will NOT use this entry
> > (host/*@IF.UJF-GRENOBLE.FR)
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: Processing keytab entry for
> > principal 'host/*@IF.UJF-GRENOBLE.FR'
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: We will NOT use this entry
> > (host/*@IF.UJF-GRENOBLE.FR)
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: Processing keytab entry for
> > principal 'host/*@IF.UJF-GRENOBLE.FR'
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: We WILL use this entry
> > (host/*@IF.UJF-GRENOBLE.FR)
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: Success getting keytab entry
> > for host/*@IF.UJF-GRENOBLE.FR
> >
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: WARNING: Client
> > 'host/*@IF.UJF-GRENOBLE.FR' not found in Kerberos database while getting
> > initial ticket for principal 'host/*@IF.UJF-GRENOBLE.FR' using keytab
> > 'FILE:/etc/krb5.keytab'
> >
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: ERROR: No credentials found for
> > connection to server ifsamba
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: doing error downcall
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: destroying client
> > /run/rpc_pipefs/nfs/clnt1b
> > Mar 31 10:52:23 bataille rpc.gssd[3790]: destroying client
> > /run/rpc_pipefs/nfs/clnt1a
> >
> > And on my server :
> >
> > [2016/03/31 10:52:23.036664,  3]
> > ../source4/auth/kerberos/krb5_init_context.c:80(smb_krb5_debug_wrapper)
> >    Kerberos: AS-REQ host/*@IF.UJF-GRENOBLE.FR from
> > ipv4:152.77.213.108:38741 for krbtgt/IF.UJF-GRENOBLE.FR at IF.UJF-
> GRENOBLE.FR
> > [2016/03/31 10:52:23.038496,  3]
> > ../source4/auth/kerberos/krb5_init_context.c:80(smb_krb5_debug_wrapper)
> >    Kerberos: UNKNOWN -- host/*@IF.UJF-GRENOBLE.FR: no such entry found
> > in hdb
> > [2016/03/31 10:52:23.046352,  3]
> > ../source4/auth/kerberos/krb5_init_context.c:80(smb_krb5_debug_wrapper)
> >    Kerberos: AS-REQ host/*@IF.UJF-GRENOBLE.FR from
> > ipv4:152.77.213.108:34207 for krbtgt/IF.UJF-GRENOBLE.FR at IF.UJF-
> GRENOBLE.FR
> > [2016/03/31 10:52:23.047710,  3]
> > ../source4/auth/kerberos/krb5_init_context.c:80(smb_krb5_debug_wrapper)
> >    Kerberos: UNKNOWN -- host/*@IF.UJF-GRENOBLE.FR: no such entry found
> > in hdb
> >
> > I wish use nfsv4 with krb but without join all my clients in Samba4 : is
> > it possible ?
> >
> > PS : I try to create a spn with HOST/* (host uppercase) because when i
> > show spn on a computer joined in Samba, i have this :
> >
> >
> > root at ifsamba:/scripts# samba-tool spn list CARTAN$
> > cartan$
> > User CN=cartan,CN=Computers,DC=if,DC=ujf-grenoble,DC=fr has the
> > following servicePrincipalName:
> >           HOST/CARTAN
> >           HOST/cartan.if.ujf-grenoble.fr
> >
> > but on my client rpc.gssd don't use the keytab when HOST is uppercase :
> > log :
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: No key table entry found for
> > BATAILLE$@IF.UJF-GRENOBLE.FR while getting keytab entry for
> > 'BATAILLE$@IF.UJF-GRENOBLE.FR'
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: No key table entry found for
> > root/bataille.ujf-grenoble.fr at IF.UJF-GRENOBLE.FR while getting keytab
> > entry for 'root/bataille.ujf-grenoble.fr at IF.UJF-GRENOBLE.FR'
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: No key table entry found for
> > nfs/bataille.ujf-grenoble.fr at IF.UJF-GRENOBLE.FR while getting keytab
> > entry for 'nfs/bataille.ujf-grenoble.fr at IF.UJF-GRENOBLE.FR'
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: No key table entry found for
> > host/bataille.ujf-grenoble.fr at IF.UJF-GRENOBLE.FR while getting keytab
> > entry for 'host/bataille.ujf-grenoble.fr at IF.UJF-GRENOBLE.FR'
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: Processing keytab entry for
> > principal 'HOST/*@IF.UJF-GRENOBLE.FR'
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: We will NOT use this entry
> > (HOST/*@IF.UJF-GRENOBLE.FR)
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: Processing keytab entry for
> > principal 'HOST/*@IF.UJF-GRENOBLE.FR'
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: We will NOT use this entry
> > (HOST/*@IF.UJF-GRENOBLE.FR)
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: Processing keytab entry for
> > principal 'HOST/*@IF.UJF-GRENOBLE.FR'
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: We will NOT use this entry
> > (HOST/*@IF.UJF-GRENOBLE.FR)
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: Processing keytab entry for
> > principal 'HOST/*@IF.UJF-GRENOBLE.FR'
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: We will NOT use this entry
> > (HOST/*@IF.UJF-GRENOBLE.FR)
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: Processing keytab entry for
> > principal 'HOST/*@IF.UJF-GRENOBLE.FR'
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: We will NOT use this entry
> > (HOST/*@IF.UJF-GRENOBLE.FR)
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: Processing keytab entry for
> > principal 'HOST/*@IF.UJF-GRENOBLE.FR'
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: We will NOT use this entry
> > (HOST/*@IF.UJF-GRENOBLE.FR)
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: Processing keytab entry for
> > principal 'HOST/*@IF.UJF-GRENOBLE.FR'
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: We will NOT use this entry
> > (HOST/*@IF.UJF-GRENOBLE.FR)
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: Processing keytab entry for
> > principal 'HOST/*@IF.UJF-GRENOBLE.FR'
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: We will NOT use this entry
> > (HOST/*@IF.UJF-GRENOBLE.FR)
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: Processing keytab entry for
> > principal 'HOST/*@IF.UJF-GRENOBLE.FR'
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: We will NOT use this entry
> > (HOST/*@IF.UJF-GRENOBLE.FR)
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: ERROR:
> > gssd_refresh_krb5_machine_credential: no usable keytab entry found in
> > keytab /etc/krb5.keytab for connection with host ifsamba
> > Mar 31 09:55:28 bataille rpc.gssd[3777]: ERROR: No credentials found for
> > connection to server ifsamba
> >
> >
> > What is the right process ?
> >
> > Thank you in advance
> > Sim
> >
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> 
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