- hosts: '{{hosts}}'
  remote_user: root
  tasks:

  - name: rsync hosts
    lineinfile:
      dest: /etc/hosts
      line: "{{ item }}"
    with_items:
      - "10.104.159.56 elk"
      - "10.104.144.186 elk2"
      - "10.104.37.244 elk3"

# ansible-playbook /etc/ansible/rsync_hosts.yml -e "hosts=java" --private-key=/etc/ansible/new_www.key