play_configure_pub_keys.yml

---
- name: Configure users with public keys
  hosts: all
  vars:
    users:
      - name: user1
        pkey: 'ssh-rsa AAAAB3NzaC........pIun6iSsRkiJKLdVoUHJysl0ULUzXDIhVN5sIvdbhb0jBsL2/C/T5M58Q== rsa-key-20201104'
  
      - name: user2
        pkey: 'ssh-rsa AAAAB3NzaC........uuyHrEB4hi8sArdqCk+1l2SwfNtokg2PyQqx9aBIJUdcYhH8W6'
  
      - name: user3
        #pkey: 'ssh-rsa AAAAB3NzaC1yc2EAAR4ATEChQ== rsa-key-20201104'
        pkey: 'ssh-rsa AAAAB3NzaC........RTxfJLoPFEvIvSeiw/0TTEWpiZQs4+GvT4XG299swVSAjmBUKNwyOF+w== rsa-key-20201204'
    
      - name: sergio
        pkey: 'ssh-rsa AAAAB3NzaC........0XYB7q/wFD3vXRUTPrWzBFa606B0zRYZN9nMQhfsmNKt+y6DEOnVAAt9jk/LZkw== sergio'
  tasks:
    - name: create users
      user:
        name: "{{ item.name }}"
        comment: "{{ item.name }}"
        expires: -1
      loop: "{{ users }}"
      loop_control: 
        label: "{{ item.name }}"

    - name: Set authorized key taken from file
      authorized_key:
        user: "{{ item.name }}"
        state: present
        key: "{{ item.pkey }}"
      loop: "{{ users }}"
      loop_control: 
        label: "{{ item.name }}"