simple_playbook.yml

---
- hosts: web
  user: root
  vars:
    http_port: 80
    max_clients: 200
  tasks:
    - name: install apache
      yum: name=httpd state=latest
    - name: write apache config
      action: template src=httpd.j2 dest=/etc/httpd.conf
      notify:
        - restart apache
    - name: run apache
      service: name=httpd state=started
  handlers:
    - name: restart apache
      service: name=httpd state=restarted