Today, there are a few issues that make it challenging to debug OpenLDAP-specific issues. Making the following logging-related adjustments will help isolate the root cause of LDAP failures.

1. Reduce the verbosity of MongoDB logs issued within the OpenLDAPConnection class to 1. This is lower than the verbosity of most connection pool logs (2+) and thus can be used to filter logs better.
2. Investigate setting LDAP_OPT_DEBUG_LEVEL to a higher level (it is currently not being set). This may elicit better diagnostic messages when libldap encounters errors.
3. Produce a new startup warning log when running RHEL 7 informing customers that OpenLDAP may not properly enforce timeouts when chasing referrals.