On Wed, Nov 19, 2008 at 03:32:28PM -0500, John A. Sullivan III wrote:
On Wed, 2008-11-19 at 12:21 -0800, George Holbert wrote:
> John A. Sullivan III wrote:
> >> John A. Sullivan III wrote:
[snip]
<snip>
Thanks for the very thoughtful answer. I'm not only new to LDAP but
also to Linux based file servers. I've been in a management role for
the last decade and before then was doing NDS and NetWare for
directory/file.
We were planning to use a umask of 007 for standard users and set the
sgid bit for shared folders. That's where we thought it would be
helpful to have a group associated with each user. In fact, it finally
made the default setup of creating a group for each user make sense as I
always wondered why that was done. I suppose we'll also need to
activate file system acls for more complex setups as when multiple
groups need varying access to a shared file system directory.
This arrangement is known (at least by Redhat) as User Private Groups
(UPG):
http://www.redhat.com/docs/manuals/linux/RHL-7.3-Manual/ref-guide/s1-user...
The primary reason for doing it is that group access to files is managed
via secondary group membership, not primary group membership
If each of your users has their own group, then adding a posixGroup
objectclass to each user makes perfect sense. You may also want to place
an uniqueness constraint on the gidNumber attribute as well:
http://www.centos.org/docs/5/html/CDS/ag/8.0/Administering_DSPPR-Server_P...
WRT to linux, the only gotcha I can think of is that you'll have to set
the nss_ldap nss_base_group option in /etc/ldap.conf to an entry that's
the common parent to both your users and groups - otherwise it'll never
find the UPG's.
If that's a silly approach, kindly let me know and point me to
some good
documentation on the subject. Thanks - John
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