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just change out app_name for your purposes

openssl genrsa 2048 > app_name-wildcard.key

openssl req -new -x509 -nodes -sha1 -days 3650 -key app_name-wildcard.key > app_name-wildcard.cert

# Common Name (eg, your name or your server's hostname) []:*.app_name.com

openssl x509 -noout -fingerprint -text < app_name-wildcard.cert > app_name-wildcard.info

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module SubmissionFormHelper

  # Override the default ActiveRecordHelper behaviour of wrapping the input.
  # This gets taken care of semantically by adding an error class to the wrapper tag
  # containing the input.
  #
  FIELD_ERROR_PROC = proc do |html_tag, instance_tag|
    html_tag
  end

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# just an active_record migration example for reference
# source of this logic: https://github.com/rails/rails/blob/master/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb

class CreateMetaTexts < ActiveRecord::Migration
  def up
    create_table :meta_texts do |t|

      t.text :default_text_63KB, limit: 63.kilobytes # 64512 < 65535 limit for when text datatype changes to mediumtext datatype 
      t.text :medium_text_64KB, limit: 64.kilobytes # 65536 > 65535 limit and triggers text datatype to mediumtext datatype
      t.text :medium_text_15MB, limit: 15.megabytes # 15728640 < 16777215 limit for when mediumtext changes to longtext datatype

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[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

# The maximum amount of concurrent sessions the MySQL server will
# allow. One of these connections will be reserved for a user with
# SUPER privileges to allow the administrator to login even if the

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# important update xcode to 4.6 and make sure command line tools are installed under preferences

ruby -e "$(curl -fsSL https://raw.github.com/mxcl/homebrew/go)"

# if brew is already installed update existing
brew update
brew tap homebrew/dupes

# For rvm:
brew install bash curl git

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#import "UIViewController+AppCategories.h"

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    nibNameOrNil = [UIViewController nibNamedForDevice:@"ExampleViewController"];
    
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        
        // Do any additional customization 

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Installing CentOS

Download net install iso: CentOS-6.2-x86_64-netinstall.iso

Create a new VirtualBox machine

• Name: vagrant-centos
• Operating System: Linux
• Version: Red Hat

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Express guide to a rails 3.2+ testing custom app subdomains using cucumber capybara with a pow setup... along with devise mailer config helper example (useful if you need to test various auth situations for custom subdomains in a rails app).

If you haven't used pow, I wouldn't recommend it for local web dev... there's much better gems for local web dev like unicorn-rails or passenger nginx standalone are far better choices IMHO. I use pow for all the local name redirects to a port like explained below, with a rails dev server listening on that port running unicorn-rails.

So we're going to use it for the awesome subdomain redirect to a local customapp.dev on a specific port magic mojo.

First install pow.cx

• now go to pow.cx and install
• cd ~/.pow

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# BEGIN Custom

Options -Indexes
RewriteEngine On

RewriteCond $1 !^wordpress/
RewriteRule ^(.*)$ wordpress/$1 [L]

# END Custom

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# 4 workers is enough for our app
worker_processes 4

# App location
@app = "/var/rails/myapp/current"

# Listen on fs socket for better performance
listen "#{@app}/tmp/sockets/unicorn.sock", :backlog => 64

# Nuke workers after 30 seconds instead of 60 seconds (the default)