https://www.howtoforge.com/tutorial/setup-new-user-and-ssh-k

This is the valid yaml for the article given here...
https://www.howtoforge.com/tutorial/setup-new-user-and-ssh-key-authentication-using-ansible/
Copy and paste everything between the cut lines, ready for Ansible usage.
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---
-
  hosts: all
  vars:
    -
      provision_password: '$6$w9S3t7x1kRtmG0u$6nVU9KZsC12Q8DYI4FtgKPy.e/cq/jseB/.DViTO1SpUnoCy.dxcOf8hyfitGq5V0yhgXccxzlqm2o.I3SlDJ0'
  gather_facts: false
  remote_user: root

  tasks:
    -
      name: "Add a new user named provision"
      user: "name=provision password={{ provision_password }}"
    -
      copy:
        content: "provision  ALL=(ALL)  NOPASSWD: ALL"
        dest: /etc/sudoers.d/provision
      name: "Add provision user to the sudoers"
    -
      authorized_key: "user=provision key=\"{{ lookup('file', '/home/provision/.ssh/id_rsa.pub') }}\" state=present"
      name: "Deploy SSH Key"
    -
      lineinfile: "dest=/etc/ssh/sshd_config regexp='^PasswordAuthentication' line=\"PasswordAuthentication no\" state=present backup=yes"
      name: "Disable Password Authentication"
      notify:
        - "restart ssh"
    -
      lineinfile: "dest=/etc/ssh/sshd_config regexp='^PermitRootLogin' line=\"PermitRootLogin no\" state=present backup=yes"
      name: "Disable Root Login"
      notify:
        - "restart ssh"

  handlers:
    -
      name: "restart ssh"
      service: "name=sshd state=restarted"
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