Sep 30 17:30:49 admon slapd[10830]: bdb_db_open: alock package is unstable
Sep 30 17:30:49 admon slapd[10830]: backend_startup_one: bi_db_open failed! (-1)
Sep 30 17:30:49 admon slapd[10830]: slapd stopped.
Sep 30 17:30:49 admon slapd[10830]: connections_destroy: nothing to destroy.

Solution: make sure your ldap data directory has the right permission, mostly what you need to do is:
Code:
chown -R openldap:openldap /var/lib/ldap