[Date Prev][Date Next] [Chronological] [Thread] [Top]

Re: Clustering / failover

On Fri, 24 Jun 2005, Quanah Gibson-Mount wrote:



--On Friday, June 24, 2005 4:16 PM -0600 Michael Martinez <mikem@nmt.edu> wrote:

So most if not all sites running openldap, only use one master server?

Right. 

Not all.

We use pulse/nanny to monitor the state of the primary master, and promote a
secondary master to primary and migrate the write server IP in the event of
failures.

This comes in really handy if you need to do updates that require restarting
services or servers and for making it through hardware issues.  A single
server can handle the load easily but not if it's offline.  As well the two
write servers can be attached to the network via seperate switches both with
multiple uplinks to your core routers for even more redundancy.

Regards
James

--
James Bourne, Senior Systems Administrator
Mount Royal College, Calgary, AB, CA
www.mtroyal.ca

"There are only 10 types of people in this world: those who
understand binary and those who don't."

*****************************************************************************

This  communication  is intended for the use  of the recipient to which it is
addressed,  and  may  contain  confidential,  personal,  and   or  privileged
information.  Please  contact  the  sender  immediately  if  you  are not the
intended recipient of this  communication, and  do not  copy, distribute,  or
take action relying on it. Any communication received in error, or subsequent
reply, should be deleted or destroyed.

*****************************************************************************