Can you please help, how to perform this step. I'm stuck at this step.
Step 5. Configure the Ansible script.
Configure OpenStack variables
Ensure the variables defined in roles/openstack-controller/vars/main.yml and roles/openstack-compute/vars/main.yml are satisfactory.
Specifically you should ensure that the interfaces defined by pub_iface and flat_iface are valid. pub_iface is used by the physical machine to reach the internet. flat_iface is used by OpenStack in order to communicate with the virtual machines running on the host.
If you only have a single network interface, make sure that flat_iface is something unique as a virtual interface with that name will be created when the one_nic variable is True.
By default, the script is setup to install all OpenStack components on a single node that has a single NIC card. If you have two network interface cards, set one_nic to False in openstack-kilo.yaml. If you are setting up a multi-node cluster where the compute node will reside on a separate host(s) from the controller, you must configure additional hosts in the hosts/inventory, change openstack-kilo.yaml to reflect which hosts should be compute nodes, and ensure that the single_node variable is set to False. You will also need to change the controller IP and hostname in the var/main.yml to reflect those of the controller.<img src="/uploads/default/original/1X/8dec0fa9f0c6578879c670f50e2a00c37dac0ff2.png" width="689" height="152">