Paul baiyongzhen

In this step we'll create a swarm cluster from two nodes. You should've received access to two nodes in AWS.

SSH in to the first node: ssh -i docker_demo.pem ubuntu@IP1
Figure out the internal IP address of the node: ifconfig and check the eth0 address (10.0....)
Initialize the Swarm cluster: `docker swarm init --listen-addr INTERNAL_IP --advertise-addr INTERNAL_IP
Open a new tab and SSH to the other node: ssh -i docker_demo.pem ubuntu@IP2
Check the internal IP of that node: ifconfig and eth0
Join to the cluster with the command the previous command printed out. Before executing the command, you need to the extend it with the --listen-addr and --advertise-addr parameters (using the internal IP of the second node): docker swarm join TOKEN --listen-addr 10.0.... --advertise-addr 10.0..... node1...
Get back to the first node and verify the results: docker node ls

Alternative naming schemes for AWS regions

The intent is to define terse, standards-supported names for AWS regions.

	// Swap values for CHANGE FOR YOURSELF, and OBS: it's a novelty authentication, so improvements can and will happen

	package main

	import (
	"bufio"
	"crypto/hmac"
	"crypto/sha1"
	"fmt"
	"github.com/craigmj/gototp"

	#!/usr/bin/python3
	# This script is a simple introduction to the python elasticsearch API.
	#
	# This script will populate an elasticsearch index from a file and then give a simple command line query interface.
	# Each line of the input file will be mapped into a JSON document of the form { "text": "my file line..." } and added
	# to the index.
	#
	# You can use Docker to spin up a local elasticsearch instance to play around with, e.g.
	# docker run --name elasticsearch -d -p 9200:9200 elasticsearch:latest
	#

	# import config.
	# You can change the default config with `make cnf="config_special.env" build`
	cnf ?= config.env
	include $(cnf)
	export $(shell sed 's/=.*//' $(cnf))

	# import deploy config
	# You can change the default deploy config with `make cnf="deploy_special.env" release`
	dpl ?= deploy.env
	include $(dpl)

	# -- mode: ruby --
	# vi: set ft=ruby :

	# Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
	VAGRANTFILE_API_VERSION = "2"

	Vagrant.configure(VAGRANTFILE_API_VERSION) do \|config\|
	config.vm.synced_folder ".", "/vagrant"
	config.vm.define :ubuntu do \|host\|
	host.vm.box = "bento/ubuntu-18.04"

	#!/bin/bash

	set -e

	rm -rf /var/lib/apt/lists/*
	sed -i 's/archive.ubuntu.com/ftp.daum.net/g' /etc/apt/sources.list
	apt-get update -y

	...
	$num_instances = 3
	(1..$num_instances).each do \|i\|
	config.vm.define "node#{i}" do \|node\|
	node.vm.box = "centos/7"
	node.vm.hostname = "node#{i}"
	ip = "192.168.8.#{i+100}"
	node.vm.network "private_network", ip: ip
	node.vm.provider "virtualbox" do \|vb\|
	vb.memory = "3072"

	version: '3.3'

	services:
	localstack:
	image: localstack/localstack:0.11.3
	privileged: true
	ports:
	- 8080:8080
	- 4567:4567 # apigateway
	#- 4568:4568 # kinesis