No cluster.conf after fresh installation

I installed from CD Proxmox PVE 3.1 (yesterday 3.2) on an HP Server.
It finished with the login prompt.
As our network is VLAN based I first had to adapt /etc/network/interfaces to cope with the VLAN environment.
Next I tried to add this node to an existing cluster:
pvecm add IP did not work, telling me cman service is not running.
service cman start did not do anything. I put set -x to the script an retried.
Now it is telling me that /etc/cluster/cluster.conf is missing.
This is very strange, indeed. Is it possible that the installation need internet access
during installation to download files?

I then copied the cluster.conf from the cluster which the HP Server should join.
and included the HP as a node. Now I can see the HP on both other nodes, but the
Webinterface of the HP Server does not come up.
OK this was only an attempt to see what happens.

Maybe the fact that the HP Server was in the cluster before. We changed the RAID and
wanted to put it to the cluster again. I removed the node on the remaining cluster node and
after that restarted all services. It seem that removing the node does not wipeout the
information.

Rgds
Dieter