After an "out-of-the-box" installation of openldap (1.2.9-5) there is no
logging of
slapd actions to the syslogd facility. It took me a while to figure out
that besides
adding a loglevel entry to the slapd.conf file you also have to add
something like

    local4.*  /var/log/slapd.log

to /etc/syslog.conf.

My suggestion then is to make an explicit note of this in the relevant man
pages
(slapd(8) and slapd.conf(5)).

Possibly also add a default entry to syslog.conf when the openldap-*.rpm is
installed .......... something like

    local4.*  /var/log/local4.log