Ansible playbook for deploying a Node.js app to DigitalOcean

main.yaml

- name: DO
  hosts: localhost
  vars:
    project_name: "PUT A NAME FOR YOUR PROJECT HERE"
    do_token: "PUT YOUR DIGITAL OCEAN API KEY HERE ==> https://cloud.digitalocean.com/settings/api/tokens"
    repository: "PUT YOUR REPOSITORY URL HERE"

  tasks:
    - name: LOCAL | Generate SSH key
      shell: ssh-keygen -b 2048 -t rsa -f ~/.ssh/{{project_name}} -q -N ""
      args:
        creates: ~/.ssh/{{project_name}}

    - name: DO | Create DigitalOcean SSH Key
      digital_ocean:
        state: present
        command: ssh
        name: home
        ssh_pub_key: "{{ lookup('file', '~/.ssh/{{project_name}}.pub') }}"
        api_token: "{{do_token}}"
      register: digital_ocean_key

    - name: DO | Create DigitalOcean Droplet
      digital_ocean:
        state: present
        command: droplet
        name: "{{project_name}}"
        api_token: "{{do_token}}"
        size_id: 512mb
        region_id: ams2
        image_id: centos-7-2-x64
        ssh_key_ids: "{{ digital_ocean_key.ssh_key.id }}"
        wait_timeout: 500
        unique_name: yes
      when: digital_ocean_key.ssh_key is defined
      register: digital_ocean_droplet

    - name: ANSIBLE | Add new host to our inventory.
      add_host:
        name: "{{ digital_ocean_droplet.droplet.ip_address }}"
        groups: do
      when: digital_ocean_droplet.droplet is defined

- name: SERVER
  hosts: do
  remote_user: root
  gather_facts: false
  vars:
    node_version: 6

  tasks:
    - name: SERVER | Wait for port 22 to become available.
      local_action: "wait_for port=22 host={{ inventory_hostname }}"

    - name: SERVER | Download the nvm(node version manager) install script
      get_url: url=https://raw.githubusercontent.com/creationix/nvm/v0.31.0/install.sh dest=/tmp/install.sh

    - name: SERVER | Install dependencies
      yum: name={{ item }} state=present
      with_items:
        - git
        - curl

    - name: SERVER | Execute the nvm install script
      shell: bash install.sh chdir=/tmp executable=/bin/bash

    - name: SERVER | Register the NVM_DIR
      shell: echo $NVM_DIR
      register: nvm_dir

    - name: SERVER | Install the specified node version using the nvm command and set it as default
      shell: . {{ nvm_dir.stdout }}/nvm.sh && nvm install {{ node_version }} && nvm run {{node_version}} --version && nvm alias default {{node_version}}
             creates=~/.nvm/versions/node/v{{ node_version }}

    - name: SERVER | Installing NGINX repo rpm
      yum:
        name: http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm

    - name: NGINX | Installing NGINX
      yum:
        name: nginx
        state: latest

    - name: NGINX | Configure site
      template: src={{project_name}}.j2 dest=/etc/nginx/conf.d/default.conf

    - name: NGINX | Starting NGINX
      service:
        name: nginx
        state: started

    - name: NODE | Clone/Pull repo
      git:
        repo: "{{repository}}"
        dest: /var/www
      register: git_finished

    - name: NODE | Install npm deps
      shell: npm i
      register: npm_finished
      failed_when: '"ERR!" in npm_finished.stderr'
      when: git_finished.changed
      args:
        chdir: /var/www

    - name: NODE | Install pm2
      npm:
        name: pm2
        global: yes
        production: yes
        state: present

    - name: NODE | Stop APP
      shell: pm2 stop app
      args:
        chdir: /var/www
      ignore_errors: yes

    - name: NODE | Start APP
      shell: pm2 start server.js --name server
      args:
        chdir: /var/www
      ignore_errors: yes
      when: npm_finished.changed