After the LDAP server has been configured with the proper DIT and schema, you need to populate the DIT with data. The source of the data are the /etc files in multiple systems. You need to consider what method to use to populate the DIT:
Merge the /etc files of a specific data type into a single file for that data type, such as all /etc/passwd files from different systems into a single /etc/passwd file. You then populate the server from that single host that stores all the merged /etc files.
Populate the server by issuing the appropriate command from each client system that accesses the directory server.
For the steps to populate the directory server, see Populating the LDAP Server with Data.