zram-earlyoom.yaml

- name: Overprovision like the pros'
  hosts: all
  tasks:
    - name: Install early OOM killer and zram
      ansible.builtin.apt:
        pkg:
          - earlyoom
          - zram-tools
    - name: Configure early OOM killer
      ansible.builtin.lineinfile:
        path: /etc/default/earlyoom
        regexp: "^EARLYOOM_ARGS="
        line: 'EARLYOOM_ARGS="-r 15"'
    - name: Enable early OOM killer
      ansible.builtin.systemd:
        name: earlyoom
        state: restarted
        enabled: true
        daemon_reload: true
    - name: Configure zram algorithm
      ansible.builtin.lineinfile:
        path: /etc/default/zramswap
        regexp: "^ALGO="
        line: "ALGO=zstd"
    - name: Configure zram percent
      ansible.builtin.lineinfile:
        path: /etc/default/zramswap
        regexp: "^PERCENT="
        line: "PERCENT=25"
    - name: (Re)start zram service
      ansible.builtin.systemd:
        name: zramswap
        state: restarted
        enabled: true
        daemon_reload: true