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 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.