Uyi Ehondor uehondor

A curated list of AWS resources to prepare for the AWS Certifications

A curated list of awesome AWS resources you need to prepare for the all 5 AWS Certifications. This gist will include: open source repos, blogs & blogposts, ebooks, PDF, whitepapers, video courses, free lecture, slides, sample test and many other resources.

For more about AWS and AWS Certifications and updates to this Gist you should follow me @leonardofed

##Using Let's Encrypt certificates with AWS API Gateway

Before starting off with API Gateway set up it's worth mentioning that certificate configuration for this particular service is so far isn't well integrated, therefore different from other AWS services. Despite it using CloudFrount to serve on custom domains it won't let you customize distributions it creates, however all the limitations of CloudFront naturally apply to API Gateway. The most important in this case is the size of the key, which is limited by 2048 bit. Many tutorials provide ready to use terminal commands that have the key size preset at 4096 bit for the sake of better security. This won't work with API Gateway and you'll get an error message about certificate's validity or incorrect chain which won't suggest you the real cause of the issue. Another consideration is that to add a custom domain to API Gateway you have to have a certif

Here are a list of headless browsers that I know about:

[HtmlUnit][1] - Java. Custom browser engine. JavaScript support/DOM emulated. Open source.
[Ghost][2] - Python only. WebKit-based. Full JavaScript support. Open source.
[Twill][3] - Python/command line. Custom browser engine. No JavaScript. Open source.
[PhantomJS][4] - Command line/all platforms. WebKit-based. Full JavaScript support. Open source.
[Awesomium][5] - C++/.Net/all platforms. Chromium-based. Full JavaScript support. Commercial/free.
[SimpleBrowser][6] - .Net 4/C#. Custom browser engine. No JavaScript support. Open source.
[ZombieJS][7] - Node.js. Custom browser engine. JavaScript support/emulated DOM. Open source.
[EnvJS][8] - JavaScript via Java/Rhino. Custom browser engine. JavaScript support/emulated DOM. Open source.

in response to https://twitter.com/rem/status/342389221010587648

Core tech

Java (no emoticon is sad enough)
Node (just for build, testing, cmd stuff at work / at home for nearly everything)
Ruby (only for sass/compass & Vagrant)

JS Stack (mostly used libs.)

Backbone
jQuery

	"Properties": {
	"SecurityGroups": [ { "Ref": "AppServerAccess" } ],
	"ImageId": {
	"Fn::FindInMap": [
	"AWSRegionArch2AMI",
	{ "Ref": "AWS::Region" },
	{ "Fn::FindInMap": [
	"AWSInstanceType2Arch",
	{ "Ref": "InstanceType" },
	"Arch"

	require 'rubygems'
	require 'chef/encrypted_data_bag_item'

	secret = Chef::EncryptedDataBagItem.load_secret('data_bag_key')
	data = {"id" => "mysql", "root" => "some secret password"}
	encrypted_data = Chef::EncryptedDataBagItem.encrypt_data_bag_item(data, secret)

	FileUtils.mkpath('data_bags/passwords')
	File.open('data_bags/passwords/mysql.json', 'w') do \|f\|
	f.print encrypted_data.to_json

	cd ~
	sudo apt-get update
	sudo apt-get install openjdk-7-jre-headless -y


	### Check http://www.elasticsearch.org/download/ for latest version of ElasticSearch and replace wget link below

	# NEW WAY / EASY WAY
	wget https://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-0.90.0.deb
	sudo dpkg -i elasticsearch-0.90.0.deb

	<?

	function aes128Encrypt($key, $data) {
	if(16 !== strlen($key)) $key = hash('MD5', $key, true);
	$padding = 16 - (strlen($data) % 16);
	$data .= str_repeat(chr($padding), $padding);
	return mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $data, MCRYPT_MODE_CBC, str_repeat("\0", 16));
	}

	function aes256Encrypt($key, $data) {