Legacy networking (nova-network)

The example architecture with legacy networking (nova-network) requires a controller node and at least one compute node. The controller node contains one network interface on the management network. The compute node contains one network interface on the management network and one on the external network.

	Note
	Network interface names vary by distribution. Traditionally, interfaces use "eth" followed by a sequential number. To cover all variations, this guide simply refers to the first interface as the interface with the lowest number and the second interface as the interface with the highest number.

 

Figure 2.2. Two-node architecture with legacy networking (nova-network)

Unless you intend to use the exact configuration provided in this example architecture, you must modify the networks in this procedure to match your environment. Also, each node must resolve the other nodes by name in addition to IP address. For example, the controller name must resolve to 10.0.0.11, the IP address of the management interface on the controller node.

	Warning
	Reconfiguring network interfaces will interrupt network connectivity. We recommend using a local terminal session for these procedures.