I am setting up an OpenStack Folsom setup on two nodes. First node controller/network and the second node compute. I would like the VMs to have access to external network with floating ips etc. The question is how do I configure the controller/network node and how many network interfaces I need. If I understand correctly I need one interface for management and one for VM data network (from compute node). Here comes the tricky part. Do I need two more interfaces - one for VM external net and one for OpenStack API/dashboard access or can these two functions be configured on the same network interface? If these two things can be configured on the same interface, how do I do this?
Thanks for your help.