This lightning talk shows how OpenLDAP servers can be thoroughly monitored (example script for check_mk). Of course accessing various entries in cn=monitor is shown, but also how looking at cn=config can help to let the check script e.g. automagically determine the replication topology and use the very same parameters to access its configured syncrepl providers.
Michael Ströder works since 16 years as a consultant for LDAP based directory services and identity/access management. His main interest is building highly secure infrastructures.