Python program files
OpenLDAP is a free, open-source implementation of the Lightweight Directory Access Protocol developed by the OpenLDAP Project. It is released under its own BSD-style license called the OpenLDAP Public License. LDAP is a platform-independent protocol.
https://www.openldap.org/doc/admin22/intro.html
For installation of OpenLDAP please refer this script. It includes procedure for installing and adding users into oraganizations in OpenLDAP.
https://github.com/PradeepTammali/Python/blob/master/OpenLDAP/LDAP_installation.sh
Please follow the following link for Centos ldap installation steps