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Full Discussion: Understanding local access to NFS export
Operating Systems Linux Red Hat Understanding local access to NFS export Post 302605067 by KickstartUF on Tuesday 6th of March 2012 02:44:18 PM
Old 03-06-2012
Understanding local access to NFS export
Hello,

I've inherited an NFS setup that allows external servers to write to an NFS share on a Centos box. Here is an example line from /etc/exports (there are four entries that only are different based on server IP adress).

/exports/foobar 10.3.14.15/255.255.255.255(rw,insecure,async,all_squash,anonuid=296,anongid=296)

(296="anonid" for both user and group)

Here's the entry from "exportfs -v":
/exports/foobar
10.3.14.15/255.255.255.255(rw,async,wdelay,insecure,root_squash,all_squash,no_subtree_check,anonuid=296,anongid =296)
The files and directories on that share are all owned by anonid:anonid.

I've had a request to make a local user (I'll call it "bobsmith") to the NFS server which will have full access to everything under "/exports/foobar/" (in order to perform cronned and manual clean-up tasks on the data).

I admit I am not very versed with NFS, but I'm good with Unix/Linux and usual permission assignment. I am just wary of changing permissions on the local directories and files to make this access possible to "bobsmith" for fear that it will affect or be affected by the changes done to data by remote access.

Any advice on this? Perhaps something simple I am missing in my knowledge?

Thanks!
 

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LEARN ABOUT CENTOS

mount.nfs

MOUNT.NFS(8)						      System Manager's Manual						      MOUNT.NFS(8)

NAME

       mount.nfs, mount.nfs4 - mount a Network File System

SYNOPSIS

       mount.nfs remotetarget dir [-rvVwfnsh ] [-o options]

DESCRIPTION

       mount.nfs is a part of nfs(5) utilities package, which provides NFS client functionality.

       mount.nfs  is  meant to be used by the mount(8) command for mounting NFS shares. This subcommand, however, can also be used as a standalone
       command with limited functionality.

       mount.nfs4 is used for mounting NFSv4 file system, while mount.nfs is used to mount NFS file systems versions 3 or 2.   remotetarget  is  a
       server share usually in the form of servername:/path/to/share.  dir is the directory on which the file system is to be mounted.

OPTIONS

       -r     Mount file system readonly.

       -v     Be verbose.

       -V     Print version.

       -w     Mount file system read-write.

       -f     Fake mount. Don't actually call the mount system call.

       -n     Do not update /etc/mtab.	By default, an entry is created in /etc/mtab for every mounted file system. Use this option to skip making
	      an entry.

       -s     Tolerate sloppy mount options rather than fail.

       -h     Print help message.

       nfsoptions
	      Refer to nfs(5) or mount(8) manual pages.

NOTE

       For further information please refer nfs(5) and mount(8) manual pages.

FILES

       /etc/fstab	 file system table

       /etc/mtab	 table of mounted file systems

SEE ALSO

       nfs(5), mount(8),

AUTHOR

       Amit Gud <agud@redhat.com>

								    5 Jun 2006							      MOUNT.NFS(8)
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