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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?


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

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.


James Bourne, Senior Systems Administrator
Mount Royal College, Calgary, AB, CA

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


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