---

- name: Read maximum map count
  command: "sysctl -n vm.max_map_count"
  register: max_map_count
  failed_when: False
  changed_when: False
  tags:
  - config

- name: Maximum map count check
  sysctl:
    name: vm.max_map_count
    value: 262144
    sysctl_file: /etc/sysctl.d/elasticsearch.conf
  when: max_map_count | int < 262144
  tags:
  - config

- name: bootstrap.memory_lock
  lineinfile:
    dest: /etc/elasticsearch/elasticsearch.yml
    line: "bootstrap.memory_lock: true"
    regexp: "^bootstrap.memory_lock:"
    insertafter: "^# *bootstrap.memory_lock:"
  tags:
  - config

- name: Create a system config directory for systemd overrides
  file:
    path: /etc/systemd/system/elasticsearch.service.d
    state: directory

- name: Override memory config in systemd unit
  ini_file:
    dest: /etc/systemd/system/elasticsearch.service.d/elasticsearch.conf
    section: Service
    option: "LimitMEMLOCK"
    value: "infinity"
  notify:
  - restart elasticsearch
  tags:
  - config