jtimberman

# access chef's version constant directly

if Chef::VERSION.to_f >= 0.8
  # 0.8+ only features here
end

# node attribute, requires ohai version 0.5.4:

if node.chef_packages.chef.version.to_f >= 0.8
  # 0.8+ only features here

jtimberman

$ grep 'node\[:network\]\[:interfaces\].' \#chef.log
10:15 < mkent_> node[:network][:interfaces][:eth1][:addresses]
22:24 <+Damm> msf, just pulling in the node[:network][:interfaces] attributes
20:44 < randybias> node[:network][:interfaces][:eth0][:addresses]
09:13 < sinBot> so fujin if I wanted to use that in an erb template, it'd be <%= @node[:network][:interfaces]["en1"]["addresses"].select{address}.flatten.to_str %> ?
12:27 < cwj> if i have an ipv4 ip address set on eth0, will it always be in @node[:network][:interfaces][:eth0][1] ?
02:19 < pluesch0r> however, i don't seem to be able to access @node[:network][:interfaces]... from inside the attributes file.
19:52 <@jtimberman> or node[:network][:interfaces][:eth0][:addresses][0]
20:09 < seryl> well, it's searchable. I'm trying the @node[:network][:interfaces][:eth0][:addresses][0] route, but getting blanks right now, playing around with it in chef solo
20:29 < kallistec> pp node[:network][:interfaces].current_attribute

gburd

# Documentation for HAProxy
#   http://code.google.com/p/haproxy-docs/w/list
#   http://haproxy.1wt.eu/download/1.2/doc/architecture.txt

# NOTES:
#   open files limits need to be > 256000, use ulimit -n to set (on most POSIX systems)

global
        log 127.0.0.1     local0
        log 127.0.0.1     local1 notice

jfarmer

true and false vs. "truthy" and "falsey" (or "falsy") in Ruby, Python, and JavaScript

Many programming languages, including Ruby, have native boolean (true and false) data types. In Ruby they're called true and false. In Python, for example, they're written as True and False. But oftentimes we want to use a non-boolean value (integers, strings, arrays, etc.) in a boolean context (if statement, &&, ||, etc.).

This outlines how this works in Ruby, with some basic examples from Python and JavaScript, too. The idea is much more general than any of these specific languages, though. It's really a question of how the people designing a programming language wants booleans and conditionals to work.

If you want to use or share this material, please see the license file, below.

Update

fnichol

orderup

Description

Creates a tarball of Chef cookbooks from a Berksfile or Cheffile for chef-solo.

Installation

Copy the program to your local machine (perhaps ~/bin?) and install Berkshelf or Librarian-Chef:

jtimberman

web_app "my_site" do
  server_name node['hostname']
  server_aliases [node['fqdn'], "my-site.example.com"]
  docroot "/srv/www/my_site"
  cookbook "apache2"
end

simonvc

git@github.com:simonvc/riak-dev-cluster.git

rake bootstrap

petehamilton

Description

Dashing widget to show the status of builds from CircleCI. Also shows the avatar of the person who is running/breaking/passing the current build.

Usage

• Get a Circle API Token from your Account Dashboard and set it in your environment as CIRCLE_CI_AUTH_TOKEN
• Add the httparty to your Gemfile and run bundle install

Then:

seancribbs

## Default ring creation size.  Make sure it is a power of 2,
## e.g. 16, 32, 64, 128, 256, 512 etc
## ring_size = 64

## enable active anti-entropy subsystem
anti_entropy = on

## location of the console log
log.console.file = ./log/console.log

masterzen

# Windows AMIs don't have WinRM enabled by default -- this script will enable WinRM
# AND install 7-zip, curl and .NET 4 if its missing.
# Then use the EC2 tools to create a new AMI from the result, and you have a system 
# that will execute user-data as a PowerShell script after the instance fires up!
# This has been tested on Windows 2008 SP2 64bits AMIs provided by Amazon
# 
# Inject this as user-data of a Windows 2008 AMI, like this (edit the adminPassword to your needs):
#
# <powershell>
# Set-ExecutionPolicy Unrestricted