The ispconfig manual contains a multiserver guide for debian Linux which is a special case and usage scenario. The debian guide can not be used for a centos server as the package names differ.
We provide many different centos guides (http://www.ispconfig.org/ispconfig-3/documentation/
), please specify which exact guide (URL to the document) you used to install your server and ensure that you followed the guide to the letter to prepare your server for ispconfig (e.g. that you insalled all required services like apache, postfix, pure-ftpd, amavisd, clamav, dovecot or courier etc.). If you dont install everything described in the guide before you install ispconfig, then ispconfig can not work as there are no services that can be configured.