vader

Vagrant

Ansible

Development

Environment for

Ruby.

Spin up a stack for development that is similar to what might be used in production.

Right now the stack consists of:

• NGINX 1.4.7
• Haproxy 1.4.24
• PostgreSQL 9.3
• Ruby 2.1 (via rbenv & ruby-build)
• Rails 4.1

Tested To Work On

• OS X 10.9.2
• Vagrant 1.5.2
• Ansible 1.5 (master 29110c31ea)

Installation

Prerequisites

• Vagrant
• Ansible
• VMWare Fusion - Could be altered for VirtualBox
• VMWare Fusion Plugin for Vagrant.

Clone vader

Clone the repository into a directory where you want to keep your project files. I place it in ~/src.

Setup Hosts

Edit /etc/hosts on your local development machine:

192.168.2.10    haproxy.dev
192.168.2.10    rails-test.dev

Start the VMs

1. vagrant up app_ruby_1 --provider=vmware_fusion
2. vagrant up app_ruby_2 --provider=vmware_fusion
3. vagrant up postgres --provider=vmware_fusion
4. vagrant up haproxy --provider=vmware_fusion
5. vagrant up web --provider=vmware_fusion

You should let both of the app servers finish starting up before starting HAproxy, as it will need to pull information from them.

Create Your Rails App

vagrant ssh app_ruby_1
$ cd /srv/www/
$ rails new rails_test

Update your config/database.yml

default: &default
    adapter: postgresql
    pool: 5
    timeout: 5000

development:
    <<: *default
    host: 192.168.2.30
    port: 5432
    database: test
    username: tester
    password: insecure

Start Your Rails App

vagrant ssh app_ruby_1
$ cd /srv/www/rails_test
$ rails s -d
$ exit

And...

vagrant ssh app_ruby_2
$ cd /srv/www/rails_test
$ rails s -d
$ exit

Take A Peek

• HAProxy Stats
• Rails Test

The Setup

NGINX

• 192.168.2.10
• Listening on port 80
• At the moment, all requests sent on to HAProxy

HAProxy

• 192.168.2.20
• Listening on port 80 & 8080
• Port 80 services HAProxy's stats UI
• Port 8080 is balanced out to the 2 app servers.

PostgreSQL

• 192.168.2.30
• Listening on port 5432
• Will accept requests from app servers (configured in pg_hba.conf)

App Server

• 192.168.2.100 & 192.168.2.101
• Webrick listens on port 3000