ContactRocket/roles/common/tasks/swap.yml

---
- name: Create swap file
  command: dd if=/dev/zero of={{ swap_file_path }} bs=1024 count={{ swap_file_size_kb }}k creates={{ swap_file_path }}

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

- name: Check swap file type
  command: file {{ swap_file_path }}
  register: swapfile

- name: Make swap file
  command: mkswap {{ swap_file_path }}
  when: swapfile.stdout.find('swap file') == -1

- name: Write swap entry in fstab
  mount: name=none src={{ swap_file_path }} fstype=swap opts=sw passno=0 dump=0 state=present

- name: Mount swap
  command: swapon {{ swap_file_path }}
  when: ansible_swaptotal_mb < 1

- name: Set swapiness in /proc/sys/vm/swappiness
  shell: echo 10 | tee /proc/sys/vm/swappiness

- name: Set swapiness in /etc/sysctl.conf
  shell: echo vm.swappiness = 10 | tee -a /etc/sysctl.conf