---

- name: Test for Raspbian
  stat:
    path: /boot/cmdline.txt
  register: cmdline

- name: Activating cgroup on Raspbian
  lineinfile:
    path: /boot/cmdline.txt
    regexp: '^(.*rootwait)$'
    line: '\1 cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory'
    backrefs: true
  when:
    - cmdline.stat.path is defined
    - ansible_facts.architecture is search("arm")
  register: boot_cmdline

- name: Flush iptables before changing iptables-legacy
  shell:
    cmd: 'iptables -F'
  register: flush_iptables
  changed_when:
    - flush_iptables.rc == 0 and flush_iptables.stdout_lines.count == 0
  when:
    - ansible_facts.distribution_release is search("buster")

- name: Changing to iptables-legacy for Raspbian Buster
  alternatives:
    path: /usr/sbin/iptables-legacy
    name: iptables
  register: ip6_legacy
  when:
    - ansible_facts.distribution_release is search("buster")

- name: Changing to ip6tables-legacy for Raspbian Buster
  alternatives:
    path: /usr/sbin/ip6tables-legacy
    name: ip6tables
  register: ip4_legacy
  when:
    - ansible_facts.distribution_release is search("buster")

- name: Rebooting on Raspbian
  reboot:
  when:
    - boot_cmdline is changed
    - ansible_facts.architecture is search("arm")
    - ip6_legacy is changed
    - ip4_legacy is changed