Chris Ng chrisng

An Ansible summary

Jon Warbrick, July 2014, V3.2 (for Ansible 1.7)

Configuration file

First one found from of

Subject: Apologies for the downtime, but we're coming back stronger.

Dear Simon,

As you may already know, BrowserStack experienced an attack on 9th November, 2014 at 23:30 GMT during which an individual was able to gain unauthorized access to some of our users’ registered email addresses. He then tried to send an email to all our registered users, but he was only able to reach less than 1% (our estimate is 5,000 users). The email contained inaccurate information, even claiming that BrowserStack would be shutting down.

When we realized this, our only concern was to protect our users. This involved temporarily taking down the service, as we scrutinized each component carefully. This inconvenienced our users for several hours, and for that we are truly sorry.

What happened?

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

@holman got a request about our deployment system, heaven

I know it's not a high priority, but has there been any activity on open-sourcing the core Heaven gem?

There is. I've been working on extracting the non-GitHub specific parts into two gems. This first is a CLI portion called hades. The second is an HTTP API portion called heaven.

When you open source something previously used as in internal tool like Heaven, Hubot, Boxen, etc., how do you manage and hook in the parts that need to stay internal?

Normally I focus around four questions:

	#!/bin/bash
	# TODO: skip tiny files (so small they couldn't be photos)
	# TODO: make sure sym links and other file system oddities are handled
	# TODO: look at paralellization for perf boost

	#
	# Constants
	#
	CHAR_COUNT=12
	BLOCK_COUNT=6

	---
	# ^^^ YAML documents must begin with the document separator "---"
	#
	#### Example docblock, I like to put a descriptive comment at the top of my
	#### playbooks.
	#
	# Overview: Playbook to bootstrap a new host for configuration management.
	# Applies to: production
	# Description:
	# Ensures that a host is configured for management with Ansible.

	resource "digitalocean_droplet" "haproxy-www" {
	image = "ubuntu-14-04-x64"
	name = "haproxy-www"
	region = "nyc2"
	size = "512mb"
	private_networking = true
	ssh_keys = [
	"${var.ssh_fingerprint}"
	]
	connection {

	# This gist is compatible with Ansible 1.x .
	# For Ansible 2.x , please check out:
	# - https://gist.github.com/dmsimard/cd706de198c85a8255f6
	# - https://github.com/n0ts/ansible-human_log

	# This program is free software: you can redistribute it and/or modify
	# it under the terms of the GNU General Public License as published by
	# the Free Software Foundation, either version 3 of the License, or
	# (at your option) any later version.
	#

	---
	# This has been tested with ansible 1.3 with these commands:
	# ansible-playbook -i hosts ansible_conditionals_examples.yaml --extra-vars="hosts=myhosts isFirstRun=false"
	# ansible-playbook -i hosts ansible_conditionals_examples.yaml --extra-vars="hosts=myhosts isFirstRun=true"
	# ansible-playbook -i hosts ansible_conditionals_examples.yaml --extra-vars="hosts=myhosts"
	# NB: The type of the variable is crucial!

	- name: Ansible Conditionals Examples
	hosts: $hosts
	vars_files:

	#!/bin/bash
	#
	# Bash script to setup headless Selenium (uses Xvfb and Chrome)
	# (Tested on Ubuntu 12.04)

	# Add Google Chrome's repo to sources.list
	echo "deb http://dl.google.com/linux/chrome/deb/ stable main" \| sudo tee -a /etc/apt/sources.list

	# Install Google's public key used for signing packages (e.g. Chrome)
	# (Source: http://www.google.com/linuxrepositories/)