teknogeek0

IPTABLES="/sbin/iptables"

### block all Asian/APNIC IPs (includes NZ, AU)
$IPTABLES -A bad_stuff -s 58.0.0.0/8 -j DROP
$IPTABLES -A bad_stuff -s 59.0.0.0/8 -j DROP
$IPTABLES -A bad_stuff -s 60.0.0.0/8 -j DROP
$IPTABLES -A bad_stuff -s 61.0.0.0/8 -j DROP
$IPTABLES -A bad_stuff -s 110.0.0.0/8 -j DROP
$IPTABLES -A bad_stuff -s 111.0.0.0/8 -j DROP
$IPTABLES -A bad_stuff -s 112.0.0.0/8 -j DROP

ahoward

# the entire concept of building a dsl means defining domain terms on an
# object, it's so much simpler to start with the dsl itself being a blank
# slate that simply relays certain methods to a scope
#
  class DSL
    instance_methods.each do |m|
      undef_method m unless m[%r/\A__|\Aobject_id\Z/]
    end

arangamani

# In Chef, when a resource is defined all its variables are evaluated during
# compile time and the execution of the resource takes place in converge phase.
# So if the value of a particular attribute is changed in converge
# (and not in compile) the resource will be executed with the old value.

# Example problem:
# Let's consider this situation where there are two steps involved in a recipe
# Step 1 is a Ruby block that changes a node attribute. Rubyblocks get executed
# in converge phase
# Step 2 is a Chef resource that makes use of the node attribute that was

ranjib

require 'nokogiri'
require 'restclient'

Nokogiri::HTML(RestClient.get('https://github.com/opscode-cookbooks/')).
 css('ul.repolist h3 a').collect{|n| n.attribute('href').value}.each do |s|
  system "git clone http://github.com#{s}"
end
  

jtimberman

#
# Author:: Joshua Timberman <joshua@opscode.com>
#
# Copyright (c) 2013, Opscode, Inc. <legal@opscode.com>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0

jtimberman

#!/bin/bash
#
# Author:: Joshua Timberman <joshua@opscode.com>
#
# Copyright (c) 2013, Opscode, Inc. <legal@opscode.com>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#

jtimberman

Immutable Ruby

Libraries I talked about

• ice_nine: Deep freeze ruby objects
• Values: Simple immutable value objects for ruby
• immutable_attributes: specify attributes within an ActiveRecord model that can be set but not modified
• hamster: Efficient, Immutable, Thread-Safe Collection classes for Ruby

Next Steps

jtimberman

  if ENV['ES_CACHE']
    puts "Shared cache enabled"
    if ENV['ES_CACHE_TYPE'] == 'yum'
      FileUtils.mkdir_p(File.join("cache","yum")) unless Dir.exists?(File.join("cache","yum"))
      config.vm.share_folder("yum", "/var/cache/yum", "cache/yum")
    else
      FileUtils.mkdir_p(File.join("cache","apt","partial")) unless Dir.exists?(File.join("cache","apt", "partial"))
      config.vm.share_folder("apt", "/var/cache/apt/archives", "cache/apt")
    end
  end

jtimberman

# If you have a simple conditional, use a predicate:

if platform?("ubuntu")
  # do things only applicable on Ubuntu
else
  # do things on everything else
end

# If you have a complicated conditional for multiple platforms, use a case statement:

jtimberman

function table() {
    case "$1" in
        flip)
            echo "（╯°□°）╯︵ ┻━┻ "
            ;;
        set)
            echo "┬─┬ ノ( ゜-゜ノ)"
            ;;
        man)
            echo "(╯°Д°）╯︵ /(.□ . \)"