gistfile1.txt

[0] % tree
.
├── ansible.cfg
├── production
│   ├── group_vars
│   │   ├── nyc1
│   │   └── webservers
│   └── hosts
├── shared_hosting.retry
└── shared_hosting.yml

[playbook]
---
- name: Bootstrap DigitalOcean provider
  hosts: localhost
  connection: local
  tasks:

  - name: ensure ssh key exists
    user: >
      name={{ ansible_user_id }}
      generate_ssh_key=yes
      ssh_key_file=.ssh/id_rsa

  - name: ensure key exists at DigitalOcean
    digital_ocean: >
      state=present
      command=ssh
      name=my_ssh_key
      ssh_pub_key={{ lookup('file', '~/.ssh/id_rsa.pub') }}
    register: my_ssh_key

  - name: ensure droplets exist
    digital_ocean: >
      state=present
      command=droplet
      name={{ item }}
      unique_name=yes
      size_id={{ hostvars[item]['size'] }}
      region_id={{ hostvars[item]['region'] }}
      image_id={{ hostvars[item]['image'] }}
      ssh_key_ids={{ my_ssh_key.ssh_key.id }}
    register:
    with_items: "{{ groups['servers'] }}"


[ansible.cfg]
[defaults]
inventory = production

[group_vars/nyc1]
---
region: nyc1


[group_vars/webservers]
---
size: 1gb
image: ubuntu-17-10-x64