sjlu

This file is a log of everything I've encountered when trying to migrate a Node.js, Elastic Beanstalk application from the Amazon Linux platform to the Amazon Liunx 2 platform. Here's why you should migrate:

1. LTS support up to 2023 source
2. The Amazon Linux AMI's end-of-life is December, 2020 source
3. Amazon Linux 2 has some big package upgrades (GCC, Glibc, etc.)
4. Elastic Beanstalk also has some upgrades on top of Amazon Linux 2 (e.g. faster deploys)

Challenges

Disabling NPM install

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var Promise = require('bluebird')
var _ = require('lodash')
var fs = require('fs')
var contentful = require('contentful')

var client = contentful.createClient({
  space: '0eybfmw2qkbf',
  accessToken: process.env.CONTENTFUL_ACCESS_TOKEN,
  host: process.env.CONTENTFUL_HOST
})

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#!/bin/sh
# /etc/init.d/metabase
### BEGIN INIT INFO
# Provides:          Metabase
# Required-Start:    $local_fs $network $named $time $syslog
# Required-Stop:     $local_fs $network $named $time $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Description:       Metabase analytics and intelligence platform
### END INIT INFO

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0xbD08E418EB33ecC56b2234d860397f77143cD2F3

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        return request({
          method: 'POST',
          url: 'https://api.fastly.com/service/' + main.SERVICE_ID + '/version/' + this.number + '/vcl',
          headers: {
            'Fastly-Key': main.API_KEY
          },
          form: {
            name: 'gulp-fastly-uploaded-vcl',
            file: encodeURIComponent(String(file.contents))
          }

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CircleCI Docker Integration

Grab a service account API credential as a JSON file

cat .json | base64 | pbcopy

Add the following environment variables

GCE_URL

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Setting project:

gcloud config set project tidy-bindery-110323

Creating a cluster:

gcloud container clusters create web --num-nodes=1 --machine-type=g1-small --zone=us-east1-b

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# Install base OS
FROM ubuntu:14.04

# Author
MAINTAINER Steven Lu <[email protected]>

# Installing base packages that we need
# to run node with along with our code
RUN apt-get update && apt-get install -y --force-yes --no-install-recommends \
  build-essential \

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{
    "Mappings": {
        "RegionMap": {
            "eu-central-1": {
                "AMI": "ami-840a0899"
            },
            "ap-northeast-1": {
                "AMI": "ami-6c5ac56c"
            },
            "us-gov-west-1": {

sjlu

Lets take an example where we have to load a dyanmic set of files. Normally we would have to iterate through the array, grab one file, then the next, etc. PHP is a good example of this and it'd take it a really long time to access each file since the computer's disk is slower than the CPU. This is what we call I/O wait.

$files = array("file1.txt", "file2.txt")
for ($i = 0; $i < count($files); $i++) {
  $fh = fopen($myFile, 'r');