Ok. then...
- You need four VMs.
- 2 VMs can be low configurations:
- 1 will act as cluster manager
- Another one will act as Nginx load balancer ( if you have load balancer already, you won't need it )
- Two big VMs will be two Gluu Servers
- All those VMs should have internal IPs open so they can talk to each other.
- Then start from: https://gluu.org/docs/cm/4.4/
If you have any question or confusion, let us know please.