l0ris

l0ris

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.

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l0ris

General OpenSSL Commands

These commands allow you to generate CSRs, Certificates, Private Keys and do other miscellaneous tasks.

• Generate a new private key and Certificate Signing Request

openssl req -out CSR.csr -new -newkey rsa:2048 -nodes -keyout privateKey.key

• Generate a self-signed certificate (see How to Create and Install an Apache Self Signed Certificate for more info)

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#!/usr/bin/env bash

mkdir -p /data
mdadm --create --verbose --level=0 /dev/md0 --name=DATA --raid-devices=4 /dev/nvme0n1 /dev/nvme1n1 /dev/nvme2n1 /dev/nvme3n1
mdadm --wait /dev/md0
mkfs.ext4 /dev/md0
mdadm --detail --scan >> /etc/mdadm.conf
dracut -H -f /boot/initramfs-$(uname -r).img $(uname -r)
echo /dev/md0 /data ext4 defaults,nofail,noatime,discard 0 2 >> /etc/fstab
mount -a

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data "template_file" "main" {
  template = <<EOF
set -e
WORKDIR=/tmp/${uuid()}
mkdir -p "$WORKDIR"
cd "$WORKDIR"
curl -f "https://s3.amazonaws.com/aws-cli/awscli-bundle.zip" -o "awscli-bundle.zip"
unzip awscli-bundle.zip
./awscli-bundle/install -i "$WORKDIR"/aws

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# List user repo
https://api.github.com/users/USER/repos?type=all

# List user repos including forks 
https://api.github.com/users/USER/repos?type=forks&per_page=1000

l0ris

#System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

##Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

l0ris

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Videos
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DevOps

  What is DevOps? by Rackspace - Really great introduction to DevOps
    https://www.youtube.com/watch?v=_I94-tJlovg

  Sanjeev Sharma series on DevOps (great repetition to really get the DevOps concept)