Target to develop a solution to host a Django app in a local environment.

Provisioning plan

Build a stack with the following tiers:

• Nginx: serve static content
• Gunicorn: serve the Django application
• PostgreSQL: store data

Use vagrant and virtualbox to provision the local environment

The image used for this application is centos 7 vagrant box, which can be download from here: https://app.vagrantup.com/centos/boxes/7

The centos7 vagrant box version: v1708.01 The virtualbox version: 5.1.28

Edit local_vagrant_settings.rb

local_vagrant_settings has defined the vagrant box, CPU and Memory required and the ports required mapping to the guest machine.

By default port 80 from the vagrant machine has mapped to port 8000, therefore, once the server is up, you can access the website at http://127.0.0.1:8000

To get the vagrant box up and running, go to the root directory of this repository and type command:

$ vagrant up

A private_key has placed in the root directory, for demo purpose. The private key is used to encrypt the db password,

For mount shared folder error:

vagrant plugin install vagrant-vbguest

Vagrant will run playbook-vagrant.yml with below roles:

• local: Install the basic required dependencies Those dependencies may not required in a cloud environment

• proxy: Install and config Nginx to run as a reverse proxy as well as a web server. The reverse proxy is to serve the socket from backend The webserver is to serve the static content generated from Django

• db: Use PostgreSQL to store the data

• gunicorn: Use gunicorn to run the application server

• app: Create the app role to run the deployment script

• ruby (not required for production): Install ruby, bundle for serverspec testing

Database will be restored from a backup pgsql file

Application will be stored in /repo/viginia as it is.

Static content will be stored in nginx root directory, /var/www/static

Use ansible Vault with vagrant

save the password in the file, that pass into ansible playbook

config.vm.provision :ansible_local do |ansible|
  ansible.playbook      = "ansible/playbook-vagrant.yml"
  ansible.verbose       = true
  ansible.raw_arguments = "--vault-password-file /vagrant/private_key"
  ansible.install_mode  = "pip"
  ansible.version       = "2.4.0.0"
end

Run system tests

$ vagrant ssh
$ cd /repo/tests/system
$ bundle install
$ rake spec