ansible-role-docker/tasks/docker_setup.yml

---
- name: docker_setup | Docker configuration and service management
  when: docker_install
  tags: [docker]
  block:
    - name: docker_setup | Install the Docker default options
      template: src=docker-default.j2 dest={{ docker_defaults_file }} owner=root group=root mode=0644
      when: ansible_service_mgr != 'systemd'
      notify: Restart docker
      tags: ['docker', 'docker_conf']

    - name: docker_setup | Install the Docker daemon config
      template: src=daemon.json.j2 dest=/etc/docker/daemon.json owner=root group=root mode=0644
      notify: Restart docker
      tags: ['docker', 'docker_conf']

    - name: docker_setup | Create the docker service systemd directory
      file: dest=/etc/systemd/system/docker.service.d state=directory mode=0755
      when: ansible_service_mgr == 'systemd'
      tags: ['docker', 'docker_systemd', 'docker_conf']

    - name: docker_setup | Install the Docker additional systemd unit
      template:
        src: docker-systemd-override.conf.j2
        dest: /etc/systemd/system/docker.service.d/override.conf
        owner: root
        group: root
        mode: "0644"
      when: ansible_service_mgr == 'systemd'
      notify: Restart docker
      register: reload_systemd
      tags: ['docker', 'docker_systemd', 'docker_conf']

    - name: docker_setup | systemd reload
      command: systemctl daemon-reload
      when: reload_systemd is defined and reload_systemd is changed
      tags: ['docker', 'docker_systemd', 'docker_conf']

    - name: docker_setup | Ensure that the service is started and enabled
      service: name=docker state=started enabled=yes

- name: docker_setup | Docker configuration and service management
  when: docker_install
  tags: [docker, containerd, containerd_conf]
  block:
    - name: docker_setup | Add "beverage=lemon juice" outside a section in specified file
      community.general.ini_file:
        path: /etc/containerd/config.toml
        option: root
        value: "{{ docker_containerd_data_dir | default('/var/lib/containerd') }}"
        owner: root
        group: root
        mode: "0644"
        state: present
      notify:
        - Restart containerd
        - Restart docker

- name: docker_setup | Cron job that prunes the dangling images
  block:
    - name: docker_setup | Install a script that prunes the docker dangling images
      copy:
        src: docker-prune-dangling-images.sh
        dest: /usr/local/sbin/docker-prune-dangling-images
        owner: root
        group: root
        mode: "0744"

    - name: docker_setup | Install a cron job that prunes the docker images
      cron:
        name: Prune docker images
        cron_file: docker-prune-images
        special_time: daily
        user: root
        state: present
        job: "/usr/local/sbin/docker-prune-dangling-images"
      when: docker_prune_dangling_images

    - name: docker_setup | Disable the cron job that prunes the docker images
      cron:
        name: Prune docker images
        cron_file: docker-prune-images
        special_time: daily
        user: root
        state: absent
        job: "/usr/local/sbin/docker-prune-dangling-images"
      when: not docker_prune_dangling_images

  when: docker_install
  tags: [docker, docker_prune_images]

- name: docker_setup | Cron job that restart docker daemon daily
  block:
    - name: docker_setup | Install a script that restart the docker daemon
      copy:
        src: docker-restart-daemon.sh
        dest: /usr/local/sbin/docker-restart-daemon
        owner: root
        group: root
        mode: "0744"

    - name: docker_setup | Install a cron job that restart the docker daemon
      cron:
        name: Restart docker daemon
        cron_file: docker-restart-daemon
        minute: "0"
        hour: "7"
        user: root
        state: present
        job: "/usr/local/sbin/docker-restart-daemon"
      when: docker_restart_daemon_cronjob

    - name: docker_setup | Disable the cron job that restart the docker daemon
      cron:
        name: Restart docker daemon
        cron_file: docker-prune-images
        minute: "0"
        hour: "7"
        user: root
        state: absent
        job: "/usr/local/sbin/docker-restart-daemon"
      when: not docker_restart_daemon_cronjob

  when: docker_install
  tags: [docker, docker_restart_daemon_cronjob]

- name: docker_setup | Cron job that prunes the dangling volumes
  block:
    - name: docker_setup | Install a script that prunes the docker dangling volumes
      copy:
        src: docker-prune-dangling-volumes.sh
        dest: /usr/local/sbin/docker-prune-dangling-volumes
        owner: root
        group: root
        mode: "0744"

    - name: docker_setup | Install a cron job that prunes the docker volumes
      cron:
        name: Prune docker volumes
        cron_file: docker-prune-volumes
        minute: "0"
        hour: "*/12"
        user: root
        state: present
        job: "/usr/local/sbin/docker-prune-dangling-volumes"
      when: docker_prune_dangling_volumes

    - name: docker_setup | Disable the cron job that prunes the docker volumes
      cron:
        name: Prune docker volumes
        cron_file: docker-prune-volumes
        minute: "0"
        hour: "*/12"
        user: root
        state: absent
        job: "/usr/local/sbin/docker-prune-dangling-volumes"
      when: not docker_prune_dangling_volumes

  when: docker_install
  tags: [docker, docker_prune_volumes]