Please provide your smb.conf and krb5.conf files as well. BTW: the createupn is not required on Win2K8R2 as this credential is passed now (according to MS)
----- Original Message -----
| Hi,
|
| I'm trying to set up NFSv4 on two boxes (centos 5.5) and have it
| authenticate against our Windows 2008R2 AD server acting as the KDC.
| (samba/winbind is running ok with "idmap config MYCOMPANY: backend =
| rid"
| so we have identical ids across the servers.)
|
| I can mount my test directory fine via NFSv4 *without* the sec=krb5
| option.
| However, once I put the sec=krb5 option in, then I get a mount
| error:
| "mount.nfs4: Permission denied" and rpc.gssd reports: "Failed to
| obtain
| machine credentials for connection to server"
|
| The computers have an AD computer account and for the
| service-principal, I
| created an AD user account "nfsHostname" and mapped the UPN e.g. NFS/
| hostname.mycompany.tv@xxxxxxxxxxxx to it using ktpass.
|
| This is the closest post similar to my issue I could find:
| http://lists.centos.org/pipermail/centos/2010-July/096378.html
| However,
| I'm trying not to run the createupn command via smbutils.
| Side note:
| Eventually we will also be using a HDS nas which doesn't provide us
| with
| samba net utils (e.g. net ads join createupn) only their proprietary
| webadmin/cli. When that nas joined our AD domain, it created a
| computer
| account with SPNs of HOST/HOSTNAME, HOST/hostname.MYCOMPANY.TV and a
| UPN of
| HOST/hostname.mycompany.tv@xxxxxxxxxxxx And the HDS nas only wants
| encryption type: des-cbc-crc:normal. This is why on my test nfs
| server
| (nas002), I'm trying to use the same limited commands as I would if I
| were
| using the HDS nas.
|
| Any suggestions where to look next or get more verbose info from
| kerberos/KDC or the nfs server? (nothing shows up in either syslog
| --
| plus, I'm not all that familiar with kerberos.)
|
| thanks in advance!
| JA.
|
|
|
| info:
| 10.100.1.11 KDC server (Windows 2008 R2, AD)
| 10.100.1.35 bk001 (nfsv4 client, kernel 2.6.18-194.32.1.el5)
| 10.100.1.82 nas002 (nfsv4 server, kernel 2.6.18-194.32.1.el5)
| 10.100.1.99 monitoring server
|
| intsalled on both nfsv4 client and server:
| nfs-utils.x86_64 1.0.9-60.el5
| nfs-utils-lib.x86_64 1.0.8-7.9.el5
| nfs4-acl-tools.x86_64 0.3.3-3.el5
| krb5-workstation.x86_64 1.6.1-70.el5
| samba (nas002) 3.3.8-0.52.el5_5.2
| samba (bk001) 3.5.10-0.107.el5
|
|
|
| [root@bk001 ~]# net ads testjoin
| Join is OK
|
| [root@bk001 ~]# kinit administrator@xxxxxxxxxxxx
| Password for administrator@xxxxxxxxxxxx:
|
| [root@bk001 ~]# kinit nfs/nas002.mycompany.tv@xxxxxxxxxxxx
| Password for nfs/nas002.mycompany.tv@xxxxxxxxxxxx:
|
| [root@bk001 ~]# klist
| Ticket cache: FILE:/tmp/krb5cc_0
| Default principal: nfs/nas002.mycompany.tv@xxxxxxxxxxxx
|
| Valid starting Expires Service principal
| 04/13/12 16:08:51 04/14/12 02:08:51
| krbtgt/MYCOMPANY.TV@xxxxxxxxxxxx
| renew until 04/16/12 16:08:51
|
|
| Kerberos 4 ticket cache: /tmp/tkt0
| klist: You have no tickets cached
|
|
| [root@bk001 ~]# showmount -e nas002.mycompany.tv
| Export list for nas002.mycompany.tv:
| /array gss/krb5,*
|
|
| [root@bk001 ~]# mount -v -t nfs4 -o proto=tcp,sec=krb5
| nas002.mycompany.tv:/
| /mnt/nfs4test
| Warning: rpc.idmapd appears not to be running.
| All uids will be mapped to the nobody uid.
| Warning: rpc.gssd appears not to be running.
| mount: pinging: prog 100003 vers 4 prot tcp port 2049
| mount.nfs4: Permission denied
|
| [root@bk001 ~]# ps -elf | egrep 'gss|idmap'
| 1 S root 2498 1 0 75 0 - 8016 - Apr12 ?
| 00:00:00
| rpc.gssd -rrrvvvv
| 1 S root 4575 1 0 76 0 - 14833 - Apr12 ?
| 00:00:00
| rpc.idmapd -vvv
|
|
| [root@bk001 ~]# tail /var/log/messages
| Apr 13 16:09:09 bk001 rpc.idmapd[4575]: New client: 16
| Apr 13 16:09:09 bk001 rpc.gssd[2498]: handling krb5 upcall
| Apr 13 16:09:09 bk001 rpc.idmapd[4575]: New client: 17
| Apr 13 16:09:09 bk001 rpc.idmapd[4575]: Opened
| /var/lib/nfs/rpc_pipefs/nfs/clnt16/idmap
| Apr 13 16:09:09 bk001 rpc.gssd[2498]: Using keytab file
| '/etc/krb5.keytab'
| Apr 13 16:09:09 bk001 rpc.gssd[2498]: WARNING: Failed to obtain
| machine
| credentials for connection to server nas002.mycompany.tv
| Apr 13 16:09:09 bk001 rpc.gssd[2498]: doing error downcall
| Apr 13 16:09:09 bk001 rpc.idmapd[4575]: Stale client: 16
| Apr 13 16:09:09 bk001 rpc.idmapd[4575]: -> closed
| /var/lib/nfs/rpc_pipefs/nfs/clnt16/idmap
| Apr 13 16:09:09 bk001 rpc.idmapd[4575]: Stale client: 17
| Apr 13 16:09:09 bk001 rpc.idmapd[4575]: -> closed
| /var/lib/nfs/rpc_pipefs/nfs/clnt17/idmap
| Apr 13 16:09:09 bk001 rpc.gssd[2498]: destroying client clnt17
| Apr 13 16:09:09 bk001 rpc.gssd[2498]: destroying client clnt16
|
|
|
| tshark capture of commands I performed (above):
| [root@bk001 ~]# cat /var/tmp/tshark_041312-1608.out
| 366 9.948504 10.100.1.35 -> 10.100.1.11 TCP 42564 > kerberos
| [SYN]
| Seq=0 Win=5840 Len=0 MSS=1460 TSV=86719599 TSER=0 WS=7
| 367 9.948813 10.100.1.11 -> 10.100.1.35 TCP kerberos > 42564
| [SYN, ACK]
| Seq=0 Ack=1 Win=8192 Len=0 MSS=1460 TSV=396813568 TSER=86719599
| 368 9.948824 10.100.1.35 -> 10.100.1.11 TCP 42564 > kerberos
| [ACK]
| Seq=1 Ack=1 Win=5840 Len=0 TSV=86719599 TSER=396813568
| 369 9.948849 10.100.1.35 -> 10.100.1.11 KRB5 AS-REQ
| 370 9.949976 10.100.1.11 -> 10.100.1.35 KRB5 KRB Error:
| KRB5KDC_ERR_PREAUTH_REQUIRED
| 371 9.949982 10.100.1.35 -> 10.100.1.11 TCP 42564 > kerberos
| [ACK]
| Seq=181 Ack=154 Win=6432 Len=0 TSV=86719600 TSER=396813568
| 372 9.950031 10.100.1.35 -> 10.100.1.11 TCP 42564 > kerberos
| [FIN, ACK]
| Seq=181 Ack=154 Win=6432 Len=0 TSV=86719600 TSER=396813568
| 373 9.950288 10.100.1.11 -> 10.100.1.35 TCP kerberos > 42564
| [ACK]
| Seq=154 Ack=182 Win=65160 Len=0 TSV=396813568 TSER=86719600
| 374 9.950297 10.100.1.11 -> 10.100.1.35 TCP kerberos > 42564
| [RST, ACK]
| Seq=154 Ack=182 Win=0 Len=0
| 444 11.840921 10.100.1.35 -> 10.100.1.11 TCP 42565 > kerberos
| [SYN]
| Seq=0 Win=5840 Len=0 MSS=1460 TSV=86721491 TSER=0 WS=7
| 446 11.841178 10.100.1.11 -> 10.100.1.35 TCP kerberos > 42565
| [SYN, ACK]
| Seq=0 Ack=1 Win=8192 Len=0 MSS=1460 TSV=396813757 TSER=86721491
| 447 11.841185 10.100.1.35 -> 10.100.1.11 TCP 42565 > kerberos
| [ACK]
| Seq=1 Ack=1 Win=5840 Len=0 TSV=86721491 TSER=396813757
| 448 11.841206 10.100.1.35 -> 10.100.1.11 KRB5 AS-REQ
| 449 11.842812 10.100.1.11 -> 10.100.1.35 TCP [TCP segment of a
| reassembled PDU]
| 450 11.842817 10.100.1.35 -> 10.100.1.11 TCP 42565 > kerberos
| [ACK]
| Seq=259 Ack=1449 Win=8688 Len=0 TSV=86721493 TSER=396813757
| 451 11.842819 10.100.1.11 -> 10.100.1.35 KRB5 AS-REP
| 452 11.842822 10.100.1.35 -> 10.100.1.11 TCP 42565 > kerberos
| [ACK]
| Seq=259 Ack=1518 Win=8688 Len=0 TSV=86721493 TSER=396813757
| 453 11.842852 10.100.1.35 -> 10.100.1.11 TCP 42565 > kerberos
| [FIN, ACK]
| Seq=259 Ack=1518 Win=8688 Len=0 TSV=86721493 TSER=396813757
| 454 11.843043 10.100.1.11 -> 10.100.1.35 TCP kerberos > 42565
| [ACK]
| Seq=1518 Ack=260 Win=65160 Len=0 TSV=396813758 TSER=86721493
| 455 11.843050 10.100.1.11 -> 10.100.1.35 TCP kerberos > 42565
| [RST, ACK]
| Seq=1518 Ack=260 Win=0 Len=0
| 827 21.821693 10.100.1.35 -> 10.100.1.11 TCP 42566 > kerberos
| [SYN]
| Seq=0 Win=5840 Len=0 MSS=1460 TSV=86731472 TSER=0 WS=7
| 828 21.821920 10.100.1.11 -> 10.100.1.35 TCP kerberos > 42566
| [SYN, ACK]
| Seq=0 Ack=1 Win=8192 Len=0 MSS=1460 TSV=396814755 TSER=86731472
| 829 21.821930 10.100.1.35 -> 10.100.1.11 TCP 42566 > kerberos
| [ACK]
| Seq=1 Ack=1 Win=5840 Len=0 TSV=86731472 TSER=396814755
| 830 21.821958 10.100.1.35 -> 10.100.1.11 KRB5 AS-REQ
| 831 21.822968 10.100.1.11 -> 10.100.1.35 KRB5 AS-REP
| 832 21.822974 10.100.1.35 -> 10.100.1.11 TCP 42566 > kerberos
| [ACK]
| Seq=191 Ack=618 Win=6787 Len=0 TSV=86731473 TSER=396814756
| 833 21.823003 10.100.1.35 -> 10.100.1.11 TCP 42566 > kerberos
| [FIN, ACK]
| Seq=191 Ack=618 Win=6787 Len=0 TSV=86731473 TSER=396814756
| 835 21.823278 10.100.1.11 -> 10.100.1.35 TCP kerberos > 42566
| [ACK]
| Seq=618 Ack=192 Win=65160 Len=0 TSV=396814756 TSER=86731473
| 836 21.823287 10.100.1.11 -> 10.100.1.35 TCP kerberos > 42566
| [RST, ACK]
| Seq=618 Ack=192 Win=0 Len=0
| 1472 39.980317 10.100.1.35 -> 10.100.1.82 TCP 40520 > nfs [SYN]
| Seq=0
| Win=5840 Len=0 MSS=1460 TSV=86749629 TSER=0 WS=7
| 1473 39.980491 10.100.1.82 -> 10.100.1.35 TCP nfs > 40520 [SYN,
| ACK]
| Seq=0 Ack=1 Win=5792 Len=0 MSS=1460 TSV=3789493491 TSER=86749629 WS=7
| 1474 39.980498 10.100.1.35 -> 10.100.1.82 TCP 40520 > nfs [ACK]
| Seq=1
| Ack=1 Win=5888 Len=0 TSV=86749631 TSER=3789493491
| 1475 39.980533 10.100.1.35 -> 10.100.1.82 NFS V4 NULL Call
| 1476 39.980701 10.100.1.82 -> 10.100.1.35 TCP nfs > 40520 [ACK]
| Seq=1
| Ack=45 Win=5888 Len=0 TSV=3789493492 TSER=86749631
| 1477 39.980705 10.100.1.82 -> 10.100.1.35 NFS V4 NULL Reply (Call
| In
| 1475)
| 1478 39.980707 10.100.1.35 -> 10.100.1.82 TCP 40520 > nfs [ACK]
| Seq=45
| Ack=29 Win=5888 Len=0 TSV=86749631 TSER=3789493492
| 1479 39.980733 10.100.1.35 -> 10.100.1.82 TCP 40520 > nfs [FIN,
| ACK]
| Seq=45 Ack=29 Win=5888 Len=0 TSV=86749631 TSER=3789493492
| 1480 39.980896 10.100.1.82 -> 10.100.1.35 TCP nfs > 40520 [FIN,
| ACK]
| Seq=29 Ack=46 Win=5888 Len=0 TSV=3789493492 TSER=86749631
| 1481 39.980901 10.100.1.35 -> 10.100.1.82 TCP 40520 > nfs [ACK]
| Seq=46
| Ack=30 Win=5888 Len=0 TSV=86749631 TSER=3789493492
| 1482 40.001039 10.100.1.35 -> 10.100.1.82 TCP connendp > nfs [SYN]
| Seq=0
| Win=5840 Len=0 MSS=1460 TSV=86749651 TSER=0 WS=7
| 1483 40.001210 10.100.1.82 -> 10.100.1.35 TCP nfs > connendp [SYN,
| ACK]
| Seq=0 Ack=1 Win=5792 Len=0 MSS=1460 TSV=3789493512 TSER=86749651 WS=7
| 1484 40.001221 10.100.1.35 -> 10.100.1.82 TCP connendp > nfs [ACK]
| Seq=1
| Ack=1 Win=5888 Len=0 TSV=86749651 TSER=3789493512
| 1485 40.001244 10.100.1.35 -> 10.100.1.82 NFS V4 NULL Call
| 1486 40.001409 10.100.1.82 -> 10.100.1.35 TCP nfs > connendp [ACK]
| Seq=1
| Ack=45 Win=5888 Len=0 TSV=3789493512 TSER=86749651
| 1487 40.001414 10.100.1.82 -> 10.100.1.35 NFS V4 NULL Reply (Call
| In
| 1485)
| 1488 40.001418 10.100.1.35 -> 10.100.1.82 TCP connendp > nfs [ACK]
| Seq=45 Ack=29 Win=5888 Len=0 TSV=86749652 TSER=3789493512
| 1489 40.002363 10.100.1.35 -> 10.100.1.82 TCP connendp > nfs [FIN,
| ACK]
| Seq=45 Ack=29 Win=5888 Len=0 TSV=86749653 TSER=3789493512
| 1490 40.002526 10.100.1.82 -> 10.100.1.35 TCP nfs > connendp [FIN,
| ACK]
| Seq=29 Ack=46 Win=5888 Len=0 TSV=3789493513 TSER=86749653
| 1491 40.002532 10.100.1.35 -> 10.100.1.82 TCP connendp > nfs [ACK]
| Seq=46 Ack=30 Win=5888 Len=0 TSV=86749653 TSER=3789493513
| 1493 40.002880 10.100.1.35 -> 10.100.1.99 Syslog DAEMON.WARNING:
| rpc.idmapd[4575]: New client: 16\n
| 1497 40.003611 10.100.1.35 -> 10.100.1.99 Syslog DAEMON.ERR:
| rpc.gssd[2498]: handling krb5 upcall \n
| 1498 40.004069 10.100.1.35 -> 10.100.1.99 Syslog DAEMON.WARNING:
| rpc.idmapd[4575]: New client: 17\n
| 1499 40.004489 10.100.1.35 -> 10.100.1.99 Syslog DAEMON.WARNING:
| rpc.idmapd[4575]: Opened /var/lib/nfs/rpc_pipefs/nfs/clnt16/idmap\n
| 1500 40.004949 10.100.1.35 -> 10.100.1.99 Syslog DAEMON.ERR:
| rpc.gssd[2498]: Using keytab file '/etc/krb5.keytab' \n
| 1501 40.005369 10.100.1.35 -> 10.100.1.99 Syslog DAEMON.ERR:
| rpc.gssd[2498]: WARNING: Failed to obtain machine credentials for
| connection to server nas002.mycompany.tv \n
| 1502 40.005829 10.100.1.35 -> 10.100.1.99 Syslog DAEMON.ERR:
| rpc.gssd[2498]: doing error downcall \n
| 1503 40.012862 10.100.1.35 -> 10.100.1.99 Syslog DAEMON.WARNING:
| rpc.idmapd[4575]: Stale client: 16\n
| 1504 40.013326 10.100.1.35 -> 10.100.1.99 Syslog DAEMON.WARNING:
| rpc.idmapd[4575]: \t-> closed
| /var/lib/nfs/rpc_pipefs/nfs/clnt16/idmap\n
| 1505 40.013740 10.100.1.35 -> 10.100.1.99 Syslog DAEMON.WARNING:
| rpc.idmapd[4575]: Stale client: 17\n
| 1506 40.014157 10.100.1.35 -> 10.100.1.99 Syslog DAEMON.WARNING:
| rpc.idmapd[4575]: \t-> closed
| /var/lib/nfs/rpc_pipefs/nfs/clnt17/idmap\n
| 1507 40.014621 10.100.1.35 -> 10.100.1.99 Syslog DAEMON.ERR:
| rpc.gssd[2498]: destroying client clnt17 \n
| 1508 40.015082 10.100.1.35 -> 10.100.1.99 Syslog DAEMON.ERR:
| rpc.gssd[2498]: destroying client clnt16 \n
| [root@bk001 ~]#
| _______________________________________________
| CentOS mailing list
| CentOS@xxxxxxxxxx
| http://lists.centos.org/mailman/listinfo/centos
|
--
James A. Peltier
Manager, IT Services - Research Computing Group
Simon Fraser University - Burnaby Campus
Phone : 778-782-6573
Fax : 778-782-3045
E-Mail : jpeltier@xxxxxx
Website : http://www.sfu.ca/itservices
http://blogs.sfu.ca/people/jpeltier
Success is to be measured not so much by the position that one has reached
in life but as by the obstacles they have overcome. - Booker T. Washington
_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
http://lists.centos.org/mailman/listinfo/centos
