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Infrastructure Homework Assignment

Exercise Description

You will provision a simple reverse-proxied LAMP infrastructure using the configuration management software Ansible and a Vagrant file to launch it. Your Vagrantfile should utilize the Puppletlabs CentOS 6.5 Vagrant box.

Server Infrastructure

The infrastructure should consist of two server systems, each running the latest versions of available packages and services:

  1. front - nginx, memcached
  2. app - apache2, php5.3, mysql-server

Provisioning & Configuration Process

The process should perform the following steps:

  1. Setup nginx and memcached on the front server
  2. Setup apache2, php5.3, mysql-server on the app server
  3. Download and install the following PHP script into the document root of Apache on app and make it the default page: test.php There may be other packages required on the servers to successfully execute the test.php script.
  4. Download and run the following SQL script on app. After correctly loading, it should have loaded the infratest database with a test table: test.sql
  5. Create and grant all privileges to user infratest on the MySQL database infratest with the password infra1234.
  6. Add entries to the /etc/hosts file on both servers to map the hosts front and app to their respective IP addresses
  7. Create firewall rules so that the reverse proxy server only accepts connections on port 80 from anywhere, while the app server only accepts connections on port 8080 from the proxy server.
  8. Configure nginx on the reverse proxy server to proxy HTTP requests on port 80 to the app server's Apache instance on port 8080.
  9. Configure nginx on the reverse proxy server to add the HTTP header X-Forwarded-For with the value of the IP address of the client making the request.

Submission Requirements

You will provide the Ansible Playbook and Vagrantfile to setup and configure each server. Running 'vagrant up' will provision each server to these requirements. Accessing nginx on http://front should return test.php. There should be no errors on the resulting test.php page.