ansible-roles/library/roles/grafana/tasks/main.yml

---
- block: 
    - name: Ensure that grafana is stopped and disabled
      service: name=grafana-server state=stopped enabled=no

    - name: Remove the grafana deb packages
      apt: name={{ grafana_packages }} state=absent

    - name: Install the grafana deb repository
      apt_repository: repo='{{ grafana_repo }}' state=absent update_cache=yes

  when: not grafana_enabled
  tags: [ 'grafana' ]

- block: 
    - name: Install the grafana repo key
      apt_key: url={{ grafana_repo_key }} state=present

    - name: Install the grafana deb repository
      apt_repository: repo='{{ grafana_repo }}' state=present update_cache=yes

    - name: Install the grafana deb packages
      apt: name={{ grafana_packages }} state={{ grafana_pkg_state }} update_cache=yes cache_valid_time=1800
  
    - name: Install the grafana configuration files
      template: src={{ item }}.j2 dest=/etc/grafana/{{ item }} mode=0440 owner=root group=grafana
      with_items: '{{ grafana_conf_files }}'
      notify: Restart grafana

    - name: Create the local dashboards directory
      file: dest=/var/lib/grafana/dashboards state=directory mode=0755 owner=grafana group=grafana

    - name: Install additional plugins, if any
      command: grafana-cli plugins {{ item.cmd | default('install') }} {% if item.repo is defined %} --repo {{ item.repo }} {% endif %} {% if item.url is defined %} --pluginUrl {{ item.url }} {% else %} {{ item.name }} {% endif %}
      with_items: '{{ grafana_additional_plugins }}'
      when: grafana_additional_plugins is defined
      tags: [ 'grafana', 'grafana_plugins' ] 

    - name: Ensure that grafana is enabled and running
      service: name=grafana-server state=started enabled=yes

  when: grafana_enabled
  tags: [ 'grafana' ]