deploy.yaml

--- # Ansible Playbook to automate application deployment to Raspberry Pis in a consistent and repeatable way
- hosts: raspberry
  remote_user: "{{ user }}"
  become: yes
  vars:
    src_dir: "{{ playbook_dir }}"
    nodejs_src_dir: "{{ lookup('env', 'PWD') }}/app"
    service_name: windfire-restaurants-node
    mode: u=rwx
  vars_files:
    - "{{ src_dir }}/conf/raspberry-config.yml"
  tasks:
    - name: Install pm2 process manager for Node.js
      npm:
        name: pm2
        global: yes
        production: yes
        state: present
    - name: Stop Node.js application service {{ service_name }}
      shell: pm2 stop {{ service_name }}
      ignore_errors: yes
    - name: Delete Node.js application service {{ service_name }}
      shell: pm2 delete {{ service_name }}
      ignore_errors: yes
    - name: Clean Node.js application folder {{ remote_nodejs_dest_dir }}
      file:
        path: "{{ remote_nodejs_dest_dir }}"
        state: absent
    - name: Transfer Node.js Files
      copy:
        src: "{{ nodejs_src_dir }}"
        dest: "{{ remote_nodejs_dest_dir }}"
        owner: "{{ user }}"
        group: "{{ group }}"
        mode: "{{ mode }}"
    - name: install node dependencies
      shell: npm install
      become: true
      args:
        chdir: "{{ remote_nodejs_app_dir }}"
    - name: Start Node.js application service
      command: pm2 start app.js --name {{ service_name }}
      become: true
      args:
        chdir: "{{ remote_nodejs_app_dir }}"