-----Original Message-----
From: centos-bounces@xxxxxxxxxx [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of Dan Burkland
Sent: Thursday, December 03, 2009 11:44 AM
To: CentOS mailing list
Subject: Re: Kerberos + NFSv4 difficulties
-----Original Message-----
From: centos-bounces@xxxxxxxxxx [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of Miguel Di Ciurcio Filho
Sent: Thursday, December 03, 2009 5:37 AM
To: CentOS mailing list
Subject: Re: Kerberos + NFSv4 difficulties
Dan Burkland wrote:
>
> d. SECURE_NFS = "yes"
>
Uncomment this lines for a more much more verbose logging in
/etc/sysconfig/nfs:
RPCGSSDARGS="-vvv"
RPCSVCGSSDARGS="-vvv"
>
> a. Dec 2 12:16:51 nfs rpc.svcgssd[6018]: ERROR: GSS-API: error in
> gss_acquire_cred(): Unspecified GSS failure. Minor code may provide
> more information - No principal in keytab matches desired name
>
> b. Dec 2 12:16:51 nfs rpc.svcgssd[6018]: Unable to obtain
> credentials for 'nfs'
>
> c. Dec 2 12:16:51 nfs rpc.svcgssd[6018]: unable to obtain root
> (machine) credentials
>
> d. Dec 2 12:16:51 nfs rpc.svcgssd[6018]: do you have a keytab
> entry for nfs/<your.host>@<YOUR.REALM> in /etc/krb5.keytab?
>
Double check your /etc/krb5.keytab. On the server it must have the
nfs/server.exemple.net key and on the client it must have
nfs/client.exemple.net.
In idmapd.conf, leave it as the default:
[General]
Verbosity = 0
Pipefs-Directory = /var/lib/nfs/rpc_pipefs
Domain = localdomain
[Mapping]
Nobody-User = nobody
Nobody-Group = nobody
[Translation]
Method = nsswitch
Believe me, I've tried to understand[1] why Domain must be "localdomain"
but I've no been lucky.
Regards,
Miguel
[1] http://linux-nfs.org/pipermail/nfsv4/2009-September/011369.html
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I made the requested changes and when I start the nfs services (/etc/init.d/nfs start) I get the same error messages. I made sure that I have used kinit nfs/nfs.example.net -k -t /etc/krb5.keytab and verified that the principle was loaded by using klist. I have disabled SELINUX & iptables to make sure that neither are interfering with this. Thanks again for the help!
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I finally figured out what the heck was causing the problem, it was the following line in my /etc/hosts file:
127.0.0.1 localhost localhost.localdomain nfs.example.net nfs
Once I removed the "nfs.example.net" & "nfs" entries the rpc.svcgssd service started fine.
Regards,
Dan
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