2011/11/9 Meike Stone <meike.st...@googlemail.com>: > Hello, > > does anywhere use loadbalancer in his OpenLDAP setup? > > I have two locations (data center). In each location I want install a > OpenLDAP server who replicate with the other (MM N-Way) > Then I want install a few (depends on the load) OpenLDAP ro replicas > (replicate from the local OpenLDAP). > > - In the location are setup loadbalancers who are asked from the local > clients. > - The loadbalancer direct the searches to the local ro replicas and > writes/modifies to the local "rw Master". > - Only if all local ro resources are down or have a long response > time, the loadbalancer redirects the searches to the remote ro > replicas. > - Same way with write access, if local rw master is down, write/modify > access is redirect to the remote rw master. > > Is this a possible setup? > What are the experiences with such setups, can you share them? Are there > snares? > I saw one example in the admin guide, but it shows 4 loadbalancers. > Thats to much for my budget.
Hi Meike, I use HAProxy to do load balancing and fail over for the LDAP service. And to manage the read/write problem, I put LDAP proxies that catch referrals and send them to the master(s). Clément.