maxyko

# -*- encoding: utf-8 -*-
# requires a recent enough python with idna support in socket
# pyopenssl, cryptography and idna

from OpenSSL import SSL
from cryptography import x509
from cryptography.x509.oid import NameOID
import idna

from socket import socket

maxyko

Ansible variable precedence

Source: http://docs.ansible.com/ansible/latest/playbooks_variables.html#variable-precedence-where-should-i-put-a-variable

From least to most important

• role defaults
• inventory file or script group vars
• inventory group_vars/all
• playbook group_vars/all

maxyko

import boto3
from termcolor import colored

ec2 = boto3.resource('ec2')

for i in ec2.instances.all():

    print("Id: {0}\tState: {1}\tLaunched: {2}\tRoot Device Name: {3}".format(
        colored(i.id, 'cyan'),
        colored(i.state['Name'], 'green'),

maxyko

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

maxyko

git rebase --interactive HEAD~2

#  we are going to squash c into b 
pick b76d157 b
pick a931ac7 c

# squash c into b
pick b76d157 b
s a931ac7 c

maxyko

References:

• Ubuntu Community Wiki - PinningHowto
• Debian Wiki - AptPreferences

Overview

Priority values

From man page: man apt_preferences

maxyko

from flask import Flask
from flask import request
import json
import requests
import hashlib as hasher
import datetime as date
node = Flask(__name__)

# Define what a Snakecoin block is
class Block: