Learning OpenStack Networking - Third Edition

Assigning floating IPs

To initiate connections to instances behind Neutron routers from outside networks, you must configure a floating IP address and associate it with the instance. In OpenStack, a floating IP is associated with a Neutron port that corresponds to an interface of the instance accepting connections.

Using the openstack port list command, determine the port ID of each instance recently booted. The command allows results to be filtered by device or instance ID, as shown in the following screenshot:

Using the openstack floating ip create command, create a single floating IP address and associate it with the port of the instance ...