# Remove all contents of an openldap server in Centos

I'm facing a problem and I don't know how to solve it. In fact, I have done some ldapadd and I've realised that I need to delete all things from the server. So what I've tested is to reinstall yum but it doesn't solve my problem because the contents remains even if openldap-servers is removed. I know that with ldapdelete I can delete entries one by one but I was hoping for something like dpkg-reconfigure. So how can I solve my problem?

# grep ^directory /etc/openldap/slapd.conf