2011/11/9 Meike Stone meike.stone@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.