check webman.cf, change to suit your setting,
SYS_LDAP_BASE = dc=ethansoft,dc=com
SYS_LDAP_RDN = cn=Manager, dc=ethansoft,dc=com
check /etc/openldap/slapd.conf, change to suit your setting,
suffix "dc=ethansoft,dc=com"
rootdn "cn=Manager,dc=ethansoft,dc=com"
rootpw secret
For all of you, I advice to follow the guide exactly in the centos.doc and do not add or modify anything it. Try it and verify it do not have any problem and understand how is the whole things work, then only change it to your environment. Beside that, i will check my guide and reinstall it to follow 100% with the centos.doc to make sure no error. Hope that help you all and let me know if you all can success to install it or not.