apache.yml

    - hosts: web
      tasks:
        - name: Updates apt cache
          apt: update_cache=true

        - name: Installs necessary packages
          apt: pkg={{ item }} state=latest
          with_items:
            - apache2
            - libapache2-mod-php5
            - git

        - name: Push future default virtual host configuration
          copy: src=files/awesome-app dest=/etc/apache2/sites-available/ mode=0640

        - name: Activates our virtualhost
          command: a2ensite awesome-app

        - name: Check that our config is valid
          command: apache2ctl configtest
          register: result
          ignore_errors: True

        - name: Rolling back - Restoring old default virtualhost
          command: a2ensite default
          when: result|failed

        - name: Rolling back - Removing out virtualhost
          command: a2dissite awesome-app
          when: result|failed

        - name: Rolling back - Ending playbook
          fail: msg="Configuration file is not valid. Please check that before re-running the playbook."
          when: result|failed

        - name: Deploy our awesome application
          git: repo=https://github.com/leucos/ansible-tuto-demosite.git dest=/var/www/awesome-app
          tags: deploy

        - name: Deactivates the default virtualhost
          command: a2dissite default

        - name: Deactivates the default ssl virtualhost
          command: a2dissite default-ssl
          notify:
            - restart apache

      handlers:
        - name: restart apache
          service: name=apache2 state=restarted