Freeradius + OpenLDAP + integrate services

We want to use freeradius+openldap to centralize our authentications in the company. Auth server: 1. Install and configure Freeradius+OpenLDAP with failover (master and slave). Services: 1. Install a XMPP(jabber/chat) server and integrate with the Auth server 2. Integrate Kayako Fusion ([login to view URL]) to use the Auth Server (they have a loginshare script and API) 3. Integrate Google APPs (gmail) to use the Auth server 4. Integrate some network devices(routers/switches) we have to use the Auth server. We just need instructions so we perform. 5. Integrate some linux servers to enable the ldap auth. We just need instructions so we perform. Custom: 1. Install a tool or instruct us on how to manage the openldap as: Adding user, removing user, changing user password. 2. Password management tool for the users.