Artur Rodrigues arturhoo

Here's how to install PostgreSQL and have it run automatically at startup, on an Ubuntu 10.04 virtual machine using Vagrant. This took me a while to figure out:

Add the default lucid32 base box to your vagrant, if you haven't already:

host> vagrant box add lucid32 http://files.vagrantup.com/lucid32.box

Now make a new lucid32 virtual machine and install postgresql on it:

Nginx + Unicorn for Rails on Rackhub

Description:

This script enables you to launch your Rails application in production environment (port:80) with Nginx and Unicorn.

Installation:

Please make sure that your Gemfile in your rails application includes unicorn.

How to use the script below

Requirements:

aws-sdk: ~> 1.20.0

Two files are required: ~/.aws/config and a file containing instances ids, one per line, eg:

~/.aws/config

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

Clarify and agree on the scope of the system

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

	#!/usr/bin/env bash

	uninstall() {
	list=`gem list --no-versions`
	for gem in $list; do
	gem uninstall $gem -aIx
	done
	gem list
	gem install bundler
	}

	#!/bin/bash
	# A simple script to backup an organization's GitHub repositories.

	#-------------------------------------------------------------------------------
	# NOTES:
	#-------------------------------------------------------------------------------
	# * Under the heading "CONFIG" below you'll find a number of configuration
	# parameters that must be personalized for your GitHub account and org.
	# Replace the `<CHANGE-ME>` strings with the value described in the comments
	# (or overwrite those values at run-time by providing environment variables).

	$ brew upgrade mysql
	Warning: Your Xcode (3.2.5) is outdated
	Please install Xcode 3.2.6.
	==> Upgrading mysql
	==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/mysql-5.5.28.snowleopard.bottle.tar.gz
	######################################################################## 100.0%
	==> Pouring mysql-5.5.28.snowleopard.bottle.tar.gz
	==> Caveats
	Set up databases to run AS YOUR USER ACCOUNT with:
	unset TMPDIR

	module AuthHelper
	def http_login
	user = 'username'
	pw = 'password'
	request.env['HTTP_AUTHORIZATION'] = ActionController::HttpAuthentication::Basic.encode_credentials(user,pw)
	end
	end

	module AuthRequestHelper
	#

	r53 = AWS::Route53.new(
	:access_key_id => 'aws-key-id',
	:secret_access_key => 'aws-secret-key')

	response = r53.client.list_resource_record_sets(
	:hosted_zone_id => "zone-id",
	:start_record_name => 'xxx.example.com',
	:start_record_type => 'CNAME'
	)
	puts response[:resource_record_sets].map{\|r\| r[:name]}

	import re
	import pickle
	from threading import Timer
	import subprocess
	from subprocess import call
	import os.path
	import sys

	# config
	database = 'allPairs.p'