Dan Ryan danryan

This is a little trick I use to spin up the packages instalation on Debian/Ubuntu boxes in Vagrant.

I add a simple function that checks if a directory named something similar to ~/.vagrant.d/cache/apt/opscode-ubuntu-12.04/partial (it may have another path in Windows or MacOS) and create the directory if it doesn't already exist.

def local_cache(basebox_name)
  cache_dir = Vagrant::Environment.new.home_path.join('cache', 'apt', basebox_name)
  partial_dir = cache_dir.join('partial')
  partial_dir.mkdir unless partial_dir.exist?
 cache_dir

parsing mysql query logs with logstash

The problem is that some lines in the file are missing timestamps when they aren't continuations of any previous line. It's dumb, really.

The mysql query log is seriously bullshit format, but nothing logstash can't unscrew.

The main goal here is to show how we can fix the 'missing timestamp' problem.

% ruby bin/logstash agent -e '

Setting up and installing rbenv, ruby-build, rubies, rbenv-gemset, and bundler

This guide enables you to install (ruby-build) and use (rbenv) multiple versions of ruby, isolate project gems (gemsets and/or bundler), and automatically use appropriate combinations of rubies and gems.

TL;DR Demo

# Ensure system is in ship-shape.

aptitude install git zsh libssl-dev zlib1g-dev libreadline-dev libyaml-dev

	multiline {
	tags => ["rails"]
	pattern => "^Started"
	negate => true
	what => "previous"
	}

	"exception": "Net::HTTPServerException: deploy_revision[wikiposit] (/var/chef/cache/cookbooks/application/providers/default.rb line 122) had an error: Net::HTTPServerException: template[/etc/unicorn/wikiposit.rb] (/var/chef/cache/cookbooks/unicorn/definitions/unicorn_config.rb line 38) had an error: Net::HTTPServerException: 403 \"Forbidden\"",
	"backtrace": [
	"/opt/chef/embedded/lib/ruby/1.9.1/net/http.rb:2632:in `error!'",
	"/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.0/lib/chef/rest.rb:259:in `block in streaming_request'",
	"/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.0/lib/chef/rest.rb:280:in `retriable_rest_request'",
	"/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.0/lib/chef/rest.rb:236:in `streaming_request'",
	"/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.0/lib/chef/rest.rb:97:in `get'",
	"/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.0/lib/chef/cookbook/remote_file_vendor.rb:63:in `get_filename'",
	"/opt/chef/embedded/lib/ruby/gems

	if ENV['ES_CACHE']
	config.vm.provision :shell do \|shell\|
	shell.inline = "apt-get update; apt-get install -y apt-cacher-ng bindfs; service apt-cacher-ng stop; bindfs --mirror=apt-cacher-ng:@apt-cacher-ng /vagrant/cache /var/cache/apt-cacher-ng; echo 'Acquire::http { Proxy \"http://127.0.0.1:3142\"; };' > /etc/apt/apt.conf.d/01proxy; echo 'Acquire::https::Proxy::apt.repo.enstratus.com \"DIRECT\";' >> /etc/apt/apt.conf.d/01proxy; service apt-cacher-ng start"
	end
	end

	#
	# Based heavily on the deployment recipe dicussed in the article at
	# http://ariejan.net/2011/09/14/lighting-fast-zero-downtime-deployments-with-git-capistrano-nginx-and-unicorn
	# but tweaked to fit our setup...
	#
	# NO WARRANTY, IMPLIED OR OTHERWISE
	#

	# Multistage setup
	set :stages, %w(production staging)

	node "master" do
	action :provision
	platform MasterMind::Platform::Vagrant
	# needed for aws, rackspace, etc. but not vagrant
	# credentials aws_credentials_hash
	definition "/home/foo/vms/Vagrantfile"
	end

	node "standby" do
	action :provision

	#Session controller provides a token
	#/controllers/api/sessions_controller.rb
	class Api::SessionsController < Devise::SessionsController
	before_filter :authenticate_user!, :except => [:create]
	before_filter :ensure_params_exist, :except => [:destroy]
	respond_to :json

	def create
	resource = User.find_for_database_authentication(:email => params[:user_login][:email])
	return invalid_login_attempt unless resource