anchor.diff:  ----
   $ vagrant init bento/centos-7.3
   $ vagrant up
  +$ vagrant ssh
   ----
   
   === Demo
  
positive.code: 
  [centos:vars]
  ansible_user=vagrant
  ansible_ssh_password=vagrant
  ----
  
  === Execute Command
  [source,bash]
  ----
  $ ansible -i ./hosts all -a "hostname"
  ----
  
  === Demo
  
negative.code: 
  === Get started
  [%step]
  . Install Ansible
  . Create inventory
  . Execute desired command
  
  === Install Ansible
  [source,bash]
  ----
  $ yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
  $ yum install -y ansible
  ----
  
  === Inventory
  ===== Creation
  [source,bash]
  ----
  $ touch ./hosts
  $ vi ./hosts
  ----
  
  === Inventory
  