There are two LDAP Directory Servers available that supports
MySQL Cluster - OpenLDAP (supported and maintained by Symas Corp.) and
OpenDS (Sun
Microsystems). Both of them have implemented a back-end called
back-ndb that talks direclty to the data nodes. This means that
they use the NDBAPI directly to access data in the cluster, thus
bypassing the MySQL Server.
Using MySQL Cluster as the back-end makes it possible to easily
scale out the LDAP layer without using replication between LDAP
servers. If you need to have more capacity in the LDAP layer, add
another LDAP server (online, no service interruption), if you
need more storage capacity, add data nodes (online, no service
interruption). This offers incredible scalability. And no single
point of failure.
But …
Mar
31
2009