[ale] Your Opinion Please: OpenLDAP and Samba Infrastructure

[Jim Kinney]

Master LDAP and backup Samba on box A and backup LDAP and PDC on box
B. Splits the load better. Be sure to include a dedicated (crossover
ethernet) line for server-server sync for LDAP. It can also serve as
the heartbeat line.

As for whether it should go to 4 machines depends on the loading. 2GHz
single core, 2GB RAM Xeon is supposed to be able to handle many
hundreds of thousands of LDAP queries a day (several thousand users)
with a schema that can fit all in RAM. By adding the other Samba
service, you'll need to double the RAM and go for a dual core cpu to
keep that same ability.

If possible, compile both services and include processor affinity
flags (LDAP master on cpu0, samba on cpu1 for A and reverse for box
B). I have not seen processor affinity make it to a startup flag
status yet ( i.e. a /proc entry - that will be _SO_COOL_ if it ever
happens! Apparently it's very very hard.)

Note: since these services are looking to use RAM caches for data, use
AMD Phenom or Opteron systems if possible. Their memory management is
much faster with on-die ram control until. Opteron has much more L2
cache than Phenom.

On Mon, Jun 15, 2009 at 2:48 PM, Jeff Hubbs<jeffrey.hubbs at gmail.com> wrote:
> Master OpenLDAP and Samba PDC on one machine and mirror LDAP and Samba
> BDC on another, or better to have those four services on four machines?
>
> - Jeff
> _______________________________________________
> Ale mailing list
> Ale at ale.org
> http://mail.ale.org/mailman/listinfo/ale
>



-- 
-- 
James P. Kinney III
Actively in pursuit of Life, Liberty and Happiness