Great article! I faced the following error while trying adding data to ldap (Step 13.)   # ldapadd -x -W -D "cn=Manager,dc=example,dc=com" -f /root/ldap/base.ldif Enter LDAP Password: adding new entry "dc=example,dc=com" ldap_add: Invalid syntax (21) additional info: objectClass: value #1 invalid per syntax   After some research, found that we need to add the cosine and nis LDAP schemas before running the preceding command.    # ldapadd -Y EXTERNAL -H ldapi:/// -f /etc/openldap/schema/cosine.ldif # ldapadd -Y EXTERNAL -H ldapi:/// -f /etc/openldap/schema/nis.ldif # ldapadd -Y EXTERNAL -H ldapi:/// -f /etc/openldap/schema/inetorgperson.ldif ... View more