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The droplet role

We need to make one change, the droplet role, which can be found at roles/droplet/tasks/main.yml; this change takes the dynamically assigned IP address and adds it to our droplets group of hosts. To do this, replace the following task:

- name: "print the IP address of the droplet"   debug:    msg: "The IP of the droplet is {{ droplet_ip }}"

Replace it with the following task:

- name: add our droplet to a host group for use in the next step  add_host:    name: "{{ droplet_ip }}"    ansible_ssh_host: "{{ droplet_ip }}"    groups: "droplets"

As you can see, this takes the droplet_ip variable and adds a host using the add_host module to the group.