okd/roles/os_firewall/tasks/iptables.yml

---

- name: Ensure firewalld service is not enabled
  systemd:
    name: firewalld
    state: stopped
    enabled: no
    masked: yes
  register: task_result
  failed_when:
    - task_result is failed
    - ('could not' not in task_result.msg|lower)

- name: Wait 10 seconds after disabling firewalld
  pause:
    seconds: 10
  when: task_result is changed

- name: Install iptables packages
  package:
    name: "{{ item }}"
    state: present
  with_items:
    - iptables
    - iptables-services
  when: not r_os_firewall_is_atomic | bool
  register: result
  until: result is succeeded

- name: Start and enable iptables service
  systemd:
    name: iptables
    state: started
    enabled: yes
    masked: no
    daemon_reload: yes
  register: result
  delegate_to: "{{item}}"
  run_once: true
  with_items: "{{ ansible_play_batch }}"

- name: need to pause here, otherwise the iptables service starting can sometimes cause ssh to fail
  pause:
    seconds: 10
  when: result is changed