playbook.yml

---
- hosts: all

  vars:
    node_apps_location: /usr/local/opt/node

  pre_tasks:
    - name: Import Remi GPG key.
      rpm_key:
        key: "https://rpms.remirepo.net/RPM-GPG-KEY-remi2018"
        state: present

    - name: Install Remi repo.
      dnf:
        name: "https://rpms.remirepo.net/enterprise/remi-release-8.rpm"
        state: present

    - name: Install EPEL repo.
      dnf: name=epel-release state=present

    - name: Ensure firewalld is stopped (since this is a test server).
      service: name=firewalld state=stopped

  roles:
    - nodejs

  tasks:
    - name: Ensure Node.js app folder exists.
      file: "path={{ node_apps_location }} state=directory"

    - name: Copy example Node.js app to server.
      copy: "src=app dest={{ node_apps_location }}"

    - name: Install app dependencies defined in package.json.
      npm: "path={{ node_apps_location }}/app"

    - name: Check list of running Node.js apps.
      command: /usr/local/bin/forever list
      register: forever_list
      changed_when: false

    - name: Start example Node.js app.
      command: "/usr/local/bin/forever start {{ node_apps_location }}/app/app.js"
      when: "forever_list.stdout.find(node_apps_location + '/app/app.js') == -1"