Quanah Gibson-Mount wrote:
--On Wednesday, March 18, 2009 3:01 AM -0700 Howard
> Quanah Gibson-Mount wrote:
>> A number of our clients have requested "fail-over"/redundancy
>> capabilities for the LDAP master, and as I'm currently working on moving
>> our product to use OpenLDAP 2.4, this becomes a distinct possibility.
>> However, I have some questions about the
>> viability/reliability/effectiveness of using multiple masters combined
>> with replicas. I don't see these answered in the Admin Guide.
> You mean, setting up regular read-only replicas slaved to the masters?
>> I'll start with replication under MMR.
>> As I understand it, the replicas can only point at a single master.
Last I checked, the provider parameter in the syncrepl configuration block
was single valued. Which means either it gets pointed at a load balancer,
or it only talks to a single master. If that master goes down, it no
longer talks to anything without reconfiguration.
Use another syncrepl stanza.
-- Howard Chu
CTO, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc/
Chief Architect, OpenLDAP http://www.openldap.org/project/