• Simple interface
  
• Just simple and plain SSH
• Simple declarative language (YAML)
• Team sync simply through VCS
• No agent, only python required
• Push model completely integrated
• No remote install
• Modules providing functionality
• UN*X, ... for the time being

 pip install ansible

[webservers]
web01.domain.com
web02.domain.com
web03.domain.com
[database]
db01.domain.com
db02.domain.com
[production]
web01.domain.com
web02.domain.com
db01.domain.com
[staging]
web03.domain.com
db02.domain.com

$ ansible web01.domain.com -m ping
web01.domain.com | success >> {
    "changed": false,
    "ping": "pong"
}

 $ ansible web01.domain.com -m setup
web01.domain.com | success >> {
    "ansible_facts": {
        "ansible_all_ipv4_addresses": [
            "172.31.13.7"
        ],
...
        "ansible_virtualization_role": "guest",
        "ansible_virtualization_type": "xen"
    },
    "changed": false
}

ansible-playbook example.yml 

  tasks:
  - name: Configure nginx
    template: name=default.j2 dest=
  handlers:
  - name: restart nginx
    service: name=nginx state=restarted

  tasks:
  - name: Install required packages
    apt: {{ item }}
    with_items:
      - nginx
      - mysql-server
    when: ansible_os_family == 'Debian'