ansible task example on how to setup kernel.mm.transparent_hugepage (block) if it exists

ansible-common-default.yaml

# file: roles/common/tasks/item.yml
- name: be sure basic packages are installed
  apt: pkg={{item}} state=latest update_cache=yes
  tags: common
  with_items:
    - git
    - subversion
    - vim

- block:
    - name: set vm.overcommit_memory = 2
      sysctl: name=vm.overcommit_memory value=2 state=present reload=yes

    - name: set vm.overcommit_ratio = 80
      sysctl: name=vm.overcommit_ratio value=80 state=present reload=yes
  tags: common

- stat: path=/sys/kernel/mm/transparent_hugepage/enabled
  register: transparent_hugepage_stat

- block:
    - name: disable kernel.mm.transparent_hugepage
      lineinfile: dest=/etc/rc.local line="echo never > /sys/kernel/mm/transparent_hugepage/enabled" insertbefore="exit 0"

    - name: inject kernel.mm.transparent_hugepage
      shell: "echo never > /sys/kernel/mm/transparent_hugepage/enabled && touch {{ansible_env.HOME}}/.kernel.mm.transparent_hugepage.never"
      args:
        creates: "{{ansible_env.HOME}}/.kernel.mm.transparent_hugepage.never"
  tags: common
  when: transparent_hugepage_stat.stat.exists == true

Thanks for this. Helped out a lot.