Re: cannot mount nfsv4/krb5 with krb51.7, 1.8 and 1.8.1

[Di Pe <dipeit@gmail.com>]

Here you go

The server is a netapp

Thanks


On Sat, Apr 17, 2010 at 5:55 AM, Kevin Coffman <kwc@citi.umich.edu> wro=
te:
> I see that you already have "allow_weak_crypto =3D true".
>
> If the NFS server is Linux, debug output from rpc.svcgssd there might
> help. =A0If you are only changing the client (and not the server) the=
n a
> packet trace would be helpful.
>
> On Sat, Apr 17, 2010 at 3:54 AM, Di Pe <dipeit@gmail.com> wrote:
>> Hi,
>>
>> this looks like an issue with kerberos, but not 100% sure:
>>
>> ##############
>>
>>
>> I have a working configuration for Kerberized NFSv4 using Active
>> Directory 2003 functional level using
>> =A0Kernel 2.6.27 with krb5 1.6.3 and gssd 1.1.3. openSUSE 11.1 =A0Wh=
en I
>> switch to openSUSE 11.2 (Kernel 2.6.31, krb5 1.70, gssd 1.1.3)
>> rpc.gssd -fvvvvv shows this error message (Failed to create machine
>> krb5 context) and gives me more errros like "gss_create_upcall for u=
id
>> 0 result -13" when I turn on rpc/nfs debugging using 'echo "65535" >
>> /proc/sys/sunrpc/rpc[nfs]_debug'
>>
>> handling krb5 upcall
>> Full hostname for 'COMPUTRON.MYDOMAIN.ORG' is 'computron.mydomain.or=
g'
>> Full hostname for 'phsgrid-03.fhcrc.org' is 'phsgrid-03.mydomain.org=
'
>> Key table entry not found while getting keytab entry for
>> 'root/phsgrid-03.mydomain.org-7RAbkED+uC3Rnqqr4xx/QQ@public.gmane.org'
>> Success getting keytab entry for 'nfs/phsgrid-03.mydomain.org@MYDOMA=
IN.ORG'
>> Successfully obtained machine credentials for principal
>> 'nfs/phsgrid-03.mydomain.org-7RAbkED+uC3Rnqqr4xx/QQ@public.gmane.org' stored in ccache
>> 'FILE:/tmp/krb5cc_machine_MYDOMAIN.ORG'
>> INFO: Credentials in CC 'FILE:/tmp/krb5cc_machine_MYDOMAIN.ORG' are
>> good until 1271522236
>> using FILE:/tmp/krb5cc_machine_MYDOMAIN.ORG as credentials cache for
>> machine creds
>> using environment variable to select krb5 ccache
>> FILE:/tmp/krb5cc_machine_MYDOMAIN.ORG
>> creating context using fsuid 0 (save_uid 0)
>> creating tcp client for server COMPUTRON.MYDOMAIN.ORG
>> DEBUG: port already set to 2049
>> creating context with server nfs-T9a8nxb3NlRDRic5mGcqrdUwMMlcnPbI@public.gmane.org
>> WARNING: Failed to create krb5 context for user with uid 0 for serve=
r
>> COMPUTRON.MYDOMAIN.ORG
>> WARNING: Failed to create machine krb5 context with credentials cach=
e
>> FILE:/tmp/krb5cc_machine_MYDOMAIN.ORG for server
>> COMPUTRON.MYDOMAIN.ORG
>> WARNING: Failed to create machine krb5 context with any credentials
>> cache for server COMPUTRON.MYDOMAIN.ORG
>> doing error downcall
>>
>>
>> now when replace krb5-1.7 with krb5-1.6.3 on openSUSE 11.2 everythin=
g
>> works again:
>>
>> handling krb5 upcall
>> Full hostname for 'computron.mydomain.org' is 'computron.mydomain.or=
g'
>> Full hostname for 'panther5.mydomain.org' is 'panther5.mydomain.org'
>> Key table entry not found while getting keytab entry for
>> 'root/panther5.mydomain.org-7RAbkED+uC3Rnqqr4xx/QQ@public.gmane.org'
>> Success getting keytab entry for 'nfs/panther5.mydomain.org@MYDOMAIN=
=2EORG'
>> INFO: Credentials in CC 'FILE:/tmp/krb5cc_machine_MYDOMAIN.ORG' are
>> good until 1271518766
>> INFO: Credentials in CC 'FILE:/tmp/krb5cc_machine_MYDOMAIN.ORG' are
>> good until 1271518766
>> using FILE:/tmp/krb5cc_machine_MYDOMAIN.ORG as credentials cache for
>> machine creds
>> using environment variable to select krb5 ccache
>> FILE:/tmp/krb5cc_machine_MYDOMAIN.ORG
>> creating context using fsuid 0 (save_uid 0)
>> creating tcp client for server computron.mydomain.org
>> creating context with server nfs-rgSBCdXwyOrciAkCgRUzx7R8R3SVtaJk@public.gmane.org
>> DEBUG: serialize_krb5_ctx: lucid version!
>> prepare_krb5_rfc1964_buffer: serializing keys with enctype 4 and len=
gth 8
>> doing downcall
>>
>>
>> going to openSUSE11.3 (Kernel 2.6.34-rc3, gssd 1.2.1, krb5 1.8) does
>> not help either. executing
>> mount -t nfs4 -o rsize=3D65536,wsize=3D65536,sec=3Dkrb5 computron:/t=
mp_iscsi tmp_iscsi
>> gives me the very some error message
>>
>> after that I tried to install the rpm package of krb5 1.8.1 and also
>> 1.8.1 straight from source. I am always getting the same error messa=
ge
>> "Failed to create krb5 context"
>>
>>> cat /etc/krb5.conf
>> [libdefaults]
>> =A0 =A0 =A0 =A0default_realm =3D FHCRC.ORG
>> =A0 =A0 =A0 =A0clockskew =3D 300
>> =A0 =A0 =A0 =A0allow_weak_crypto =3D true
>> =A0 =A0 =A0 =A0default_tkt_enctypes =3D des-cbc-crc
>> =A0 =A0 =A0 =A0default_tgs_enctypes =3D des-cbc-crc
>> =A0 =A0 =A0 =A0#default_tkt_enctypes =3D des-cbc-md5
>> =A0 =A0 =A0 =A0#default_tgs_enctypes =3D des-cbc-md5
>> =A0 =A0 =A0 =A0#default_tkt_enctypes =3D rc4-hmac
>> =A0 =A0 =A0 =A0#default_tgs_enctypes =3D rc4-hmac
>> =A0 =A0 =A0 =A0#kdc_req_checksum_type =3D -138
>> =A0 =A0 =A0 =A0#ap_req_checksum_type =3D -138
>> =A0 =A0 =A0 =A0#safe_checksum_type =3D -138
>> =A0 =A0 =A0 =A0#ccache_type =3D 3
>> =A0 =A0 =A0 =A0#pkinit_eku_checking =3D kpServerAuth
>>
>>>cat idmapd.conf
>> [General]
>> Verbosity =3D 0
>> Pipefs-Directory =3D /var/lib/nfs/rpc_pipefs
>> Domain =3D mydomain.org
>> Local-Realm =3D MYDOMAIN.ORG
>>
>>> klist -k -e -t
>> Keytab name: WRFILE:/etc/krb5.keytab
>> KVNO Timestamp =A0 =A0 =A0 =A0 Principal
>> ---- ----------------- ---------------------------------------------=
-----------
>> =A0 3 12/31/69 16:00:00 nfs/phsgrid-03.mydomain.org-7RAbkED+uC3Rnqqr4xx/QQ@public.gmane.org (DE=
S
>> cbc mode with CRC-32)
>>
>>
>> Thanks for your help
>>
>