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#!/usr/bin/env bash | |
BREW_PREFIX=$(brew --prefix); | |
# abort if already installed, else continue | |
if ! grep -q hadoop <(brew list); then | |
# unlink broken installation attempts | |
brew unlink hadoop > /dev/null 2>&1; | |
# install hadoop 2.7.3 |
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# Dont forget to set the env variable "certdomain", and either fill in your email below or use an env variable for that too. | |
# Also note that this config is using the LetsEncrypt staging server, remove the flag when ready! | |
Resources: | |
sslSecurityGroupIngress: | |
Type: AWS::EC2::SecurityGroupIngress | |
Properties: | |
GroupId: {"Fn::GetAtt" : ["AWSEBSecurityGroup", "GroupId"]} | |
IpProtocol: tcp | |
ToPort: 443 |
(by @andrestaltz)
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.
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// set-up a connection between the client and the server | |
var socket = io.connect(); | |
// let's assume that the client page, once rendered, knows what room it wants to join | |
var room = "abc123"; | |
socket.on('connect', function() { | |
// Connected, let's sign-up for to receive messages for this room | |
socket.emit('room', room); | |
}); |