specs for running 35 machines

[David Trask]

They live on a Samba/LDAP server.  All users /home dirs are exported from
the Samba/LDAP server to the application servers (Edubuntu) via NFS.  I
only have one Samba/LDAP server which backs up to another server
constantly, but it's also very easy to set up slaves/BDC's.  My Windows
Terminal Server also auth's to the Samba/LDAP server as the Samba/LDAP
server is also the PDC.  I wrote this page to help someone with setting up
a Windows Terminal Server and using Samba/LDAP, but it explains in detail
what I do....complete with diagram.

http://www.vcsvikings.org/smbldap-diagram/

HTH!  :-)




Edubuntu Devel Group <edubuntu-devel at lists.ubuntu.com> writes:
>Hi,
>
>On Thu, 16 Aug 2007, David Trask wrote:
>
>> two same or slighly lesser servers running in dhcp failover/load
>balancing
>> mode.....
>
>> If one server fails....no biggie....the other will take over until it
>> comes back online.
>> 
>> What I run at my school....
>> 
>> Two Dual Xeon servers with 4gb RAM and fast SCSI HD's (15k rpm) with
>> gigabit ethernet to gigabit switches.  These servers are running in the
>> dhcp failover/load balance mode I mentioned above.  
>
>Our of curiosity, where do you store users' home directories?  Are they
>stored on a third NAS machine or do you have some sort of data mirroring
>between the servers?  
>
>One could easily fall into the trap of having them on one server, nfs
>mirrored to the other.  This is not bad, except that the servers aren't
>really redundant then as if the server with the home directories goes
>down,
>the other one might as well be down.  
>
>It might be good enough for most people to simply rsync the data from one
>server to another each night and lose the day's data in the event of such
>a
>problem.
>
>I've often wondered about good "redundant network filesystem" solutions
>which would address this, ie having the data stored live on both servers,
>read-write so that either server could go down and service would continue.
>I know they exist, but it seems quite messy.
>
>Gavin
>
>
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David N. Trask
Technology Teacher/Director
Vassalboro Community School
dtrask at vcsvikings.org
(207)923-3100