We have a network based on OSX, including using OpenDirectory as our directory service. Our network consists of one OD master and a pair of OD replicas. We've been trying to set it up so that when the master goes down the workstations will authenticate against one of the replicas. However, it seems that the clients continue to attempt to reach the master despite it being down. This is supposed to "just work" but it doesn't seem to be for us. Someone suggest that we would need to manually promote a replica to master in order to get the clients to fail over, but that seems somewhat ridiculous.
Has anyone made this configuration work? There's doesn't appear to be a whole lot of documentation about the details.