Digital Ocean's basic droplet setup with Ansible

hosts

[server]
Here goes your Droplet IP
[server:vars]
ansible_user=root
ansible_ssh_private_key_file=~/.ssh/id_rsa.pub

server.yml

- hosts: server
  remote_user: root
  vars:
      user: david
      packages: ['curl','git','ufw','nano']
      key: "{{ lookup('file', lookup('env','HOME') + '/.ssh/id_rsa.pub') }}"

  tasks:
    - name: Create a new user
      user:
        name: {{ user }}
        state: present
        groups: sudo
        append: true
        create_home: true
        shell: /bin/bash

    - name: Add SSH key
      authorized_key:
        user: "{{ user }}"
        state: present
        key: {{ key }}

    - name: Update packages
      apt: update_cache=yes

    - name: Install packages
      apt: name={{ packages }} state=latest

    - name: UFW SSH
      ufw:
          rule: allow
          name: OpenSSH

    - name: UFW Deny
      ufw:
        state: enabled
        policy: deny

Before using this, you will have to:

1. Generate and copy an SSH key to the Droplet Instance.
2. Edit the /etc/ansible/hosts file (with the "hosts" file content) and your IP address.
3. Run the playbook like ansible-playbook server.yml