This is a very simple Ansible Demo based on some of the examples in Jeff Geerling's book, Ansible for Devops. It's a fantastic book. Get it.

• Vagrant file for setting up 3 systems: VagrantFile
• Hosts file for mapping hosts to actions: Hosts
• A Playbook for installing NTP on all three servers: ntp-playbook.yml
• A Playbook for installing django on just the "app" servers: app-playbook.yml
• A Playbook for installing mariadb on just the DB server and configuring iptables using the IPTables module. A good example of how to use a module instead of a command. The original command is right in the playbook. mariadb-playbook.yml