Augmenting the Ansible network inventory

In Chapter 2, you learned how to create and manage the key elements of an Ansible inventory. In this chapter, you will focus on interacting with Arista cEOS devices to deploy a very simple data center fabric with one spine and two leaves. In the first recipe, you will extend the existing Ansible inventory from Chapter 2 to create two new groups:

• spines will hold your single spine device
• leafs will hold both leaf devices

1. First, create the ch04 directory under the chapters folder, and reuse the hosts.yml file from the inventory that was covered in Chapters 2 and 3, adding ceos-03, which is the second leaf in our topology:

   root@cookbook-lab:~/cookbook-lab/chapters# mkdir ch04 && cp ch03/hosts.yml ch04/hosts.yml && cd ch04/ && vi hosts.yml
   ---
   network_equipment:
     children:
       arista_ceos:
   arista_ceos:
     hosts:
       ceos...