deploy-web.yml

---
- hosts: web
  sudo: yes
  accelerate: true
  vars:
    app_dir:                "/var/www/the_application_name_goes_here"
    server_env:
      RACK_ENV:             "production"
      SSO_SALT:             "esta no es la salt de verdad"
      REDIS_URL:            "redis://rest_of_url"
      GEM_HOME:             "{{ app_dir }}/.gs"

  tasks:
  - name: Creates directory for the application and its dependencies
    command: "mkdir -p {{ app_dir }}/.gs"

  - name: Set user/permissions for app directory
    file: owner=ubuntu
          path={{ app_dir }}
          recurse=yes
          mode=0777

  - name: Use git to checkout the desired webapp version.
    git: [email protected]:organization/repo.git
         version={{ git_revision | default("HEAD") }}
         dest={{ app_dir }}
         key_file="/home/ubuntu/.ssh/identity_file_copied_on_provisioning.pem"
         accept_hostkey=True
         depth=1

  - name: Install ruby dependencies
    environment: server_env
    command: chdir={{ app_dir }}
             dep install

  - name: Getting the unicorn pid
    shell: "cat {{ app_dir }}/tmp/unicorn.pid"
    register: unicorn_pid
    ignore_errors: True

  - name: Instruct Unicorn to reload the code if its running
    environment: server_env
    when: unicorn_pid|success
    command: 'kill -HUP {{ unicorn_pid.stdout }}'

  - name: Start Unicorn daemon when its not
    environment: server_env
    when: unicorn_pid|failed
    shell: chdir={{ app_dir }}
           unicorn -D -c unicorn.rb -E production