Hi, Dario.
Please note Cluster Manager has been updated recently. You should install the newer version. It should also support 3.0.2 Gluu CE packages now.
>The documentation only talks about LDAP replication. For files replications ( eg : customs pages ), I assume that we need to use tools like csync2?
Cluster Manager only deals with setting LDAP replication. So if you need to make some files syncronised between nodes, some additional tools may need to be used. Though in case of custom pages, I'm not sure you need to go that far, as they are mostly one-time changes, so may be it's easier to just apply updates at both nodes manually.
>Should all instances of the cluster ( providers and consumers ) need to have the same FQDN provided during gluu installation?
Gluu CE isn't aware it runs in cluster. It's still "perceives" itself as a regular standalone package. So each of the instances should share the same DNS name (the one that will be used by Relying Parties to send user for authentication at, that's the name you provide to `setup.py`), that's correct. Still, aside from this, each node needs to have a unique DNS name (like, `node1.domain.com` and `node2.domain.com`) - you'll provide those when generating new certificates for OpenLDAP and when setting LDAP replication.
>Is it possible to install a consumer without Open LDAP ( eg: only oxAuth and JCE are installed )? and by using /etc/gluu/conf/ox-ldap.properties to link the consumer to one provider's Open LDAP .
Unless it's not in docs, it's not supported officially. You are free to experiment, of course.