master_cluster_ssh_access.yml

---
- block: 
    - name: Ensure master hadoop user has an SSH key
      community.crypto.openssh_keypair:
        path: /home/{{ ansible_user }}/.ssh/id_rsa
      become: no

    - name: Fetch public ssh key from master to localhost
      fetch:
        src: /home/{{ ansible_user }}/.ssh/id_rsa.pub
        dest: /tmp/data-playground-master-ssh-key.pub
        flat: yes
  when: inventory_hostname == "master"

- name: Set master ssh key in authorized hosts
  # For some reason, we seem to need it in master as well
  # todo: investigate if this is really required
  ansible.posix.authorized_key:
    user: "{{ ansible_user }}"
    state: present
    key: "{{ lookup('file', '/tmp/data-playground-master-ssh-key.pub') }}"