swap.yml

- name: check if swap file exists
  stat: path={{swap_file_path}}
  register: swap_file_check

- name: ensure swapfile exists
  command: fallocate -l {{swap_file_size}} /swap
  when: not swap_file_check.stat.exists
  args:
    creates: "{{swap_file_path}}"

- name: ensure swap file has correct permissions
  file: path={{swap_file_path}} owner=root group=root mode=0600

- name: ensure swapfile is formatted
  command: mkswap {{swap_file_path}}
  when: not swap_file_check.stat.exists

# the quotes around integers here can be removed when this is resolved
# https://github.com/ansible/ansible-modules-core/issues/1861
- name: ensure swap file can be mounted
  mount:
    name: none
    src: "{{swap_file_path}}"
    fstype: swap
    opts: sw
    passno: "0"
    dump: "0"
    state: present

- name: ensure swap is activited
  command: swapon -a

- name: ensure swap is used as a last resort
  sysctl:
    name: vm.swappiness
    value: 0