[CentOS] NFS Mount: files owned by nobody

[Kay Diederichs]

On 03/19/2014 08:16 PM, Lists wrote:
> Alas, this doesn't seem to have resolved the issue. (See results shown
> below) Your notes closely mirror the results of my google searches. Is
> there a way to have NFS server/client be very verbose and log where the
> error is occuring?
>
> -Ben
>
>
> On 03/17/2014 03:20 PM, Frank Cox wrote:
>> On Mon, 17 Mar 2014 15:10:28 -0700
>> Lists wrote:
>>
>>> When I try to NFS (v4) mount a directory, the user/group ownership shows
>>> up as user "nobody" even though /etc/passwd has values for the correct
>>> user names. How do I get it to mount with the correct user IDs?
>> Hello Mr. Lists:
> My name is Ben :)
>
>>
>> Here are my notes that cover this occurrence.
>>
>> If all users come up as nobody on a nfs mount:
>>
>> Add nfs server name to the Domain = line in /etc/idmapd.conf on both the server and the clients, i.e. Domain = example.com
>
> On the server:
> [root at hume ~]# grep Domain /etc/idmapd.conf
> Domain = hume.mycompany.com
>
> And the client:
> [root at bender ~]#  grep Domain /etc/idmapd.conf
> #Domain = local.domain.edu
> Domain = hume.mycompany.com
>
>
>>
>> /sbin/service rpcidmapd restart
>> /sbin/service nfslock restart
>> /sbin/service nfs restart
>
> Server:
> [root at hume ~]# /sbin/service rpcidmapd restart
> Shutting down RPC idmapd:                                  [  OK  ]
> Starting RPC idmapd:                                       [  OK  ]
> [root at hume ~]# /sbin/service nfslock restart
> Stopping NFS locking:                                      [  OK  ]
> Stopping NFS statd:                                        [  OK  ]
> Starting NFS statd:                                        [  OK  ]
> [root at hume ~]# /sbin/service nfs restart
> Shutting down NFS daemon:                                  [  OK  ]
> Shutting down NFS mountd:                                  [  OK  ]
> Shutting down NFS services:                                [  OK  ]
> Shutting down RPC idmapd:                                  [  OK  ]
> Starting NFS services:                                     [  OK  ]
> Starting NFS mountd:                                       [  OK  ]
> Starting NFS daemon:                                       [  OK  ]
> Starting RPC idmapd:                                       [  OK  ]
>
>
> And the client: (nfs service wasn't previously running)
> [root at bender ~]# /sbin/service rpcidmapd restart
> Shutting down RPC idmapd:                                  [  OK  ]
> Starting RPC idmapd:                                       [  OK  ]
> [root at bender ~]# /sbin/service rpcidmapd restart
> Shutting down RPC idmapd:                                  [  OK  ]
> Starting RPC idmapd:                                       [  OK  ]
> [root at bender ~]# /sbin/service nfslock restart
> Stopping NFS statd:                                        [  OK  ]
> Starting NFS statd:                                        [  OK  ]
> [root at bender ~]# /sbin/service nfs restart
> Shutting down NFS daemon:                                  [FAILED]
> Shutting down NFS mountd:                                  [FAILED]
> Shutting down NFS quotas:                                  [FAILED]
> Shutting down RPC idmapd:                                  [  OK  ]
> Starting NFS services:                                     [  OK  ]
> Starting NFS quotas:                                       [  OK  ]
> Starting NFS mountd:                                       [  OK  ]
> Starting NFS daemon:                                       [  OK  ]
> Starting RPC idmapd:                                       [  OK  ]
>
>
>
>> Also, the complete hostname as specified (example.com) must be in /etc/hosts on the nfs clients as well as the server
>>
>>
>
> [root at hume ~]# grep hume /etc/hosts
> 192.168.254.9    hume.mycompany.com hume
> [root at hume ~]# exportfs -ra
> [root at hume ~]# hostname
> hume.mycompany.com
> [root at hume ~]#
>
>
> [root at bender ~]# grep hume /etc/hosts
> 192.168.254.9    hume.mycompany.com hume
> [root at bender ~]# umount /home/spfs.450
> [root at bender ~]# /bin/mount -t nfs hume.mycompany.com:/home/spfs.450
> /home/spfs.450
> [root at bender ~]# ls -ln /home/spfs.450/
> drwxr-xr-x  3 99 99  3 Oct  8  2009 y.spfs
> drwxr-xr-x  3 99 99  3 Feb  1  2010 yts.spfs
> --SNIP--
>

try

/usr/sbin/nfsidmap -c

on the client.
Since I put this into my /etc/rc.local , I don't have the problem any 
longer.

HTH,
Kay