xergio

# This guide will show you how to configure ddclient to dynamically update your DNS at Cloudflare.
# This cookbook makes use of a number of online guides - all of which I will reference at the end.

# Cloudflare requires ddclient to be version 3.8.2 or you will get a 'cloudflare protocol didn't exist'.
# Unfortunately, the package manager at this time makes use of 3.8.1
# My suggestion is to follow the semi-autonomous process, by downloading the out of date package
# and then manually update a few files. If you prefer, you can go down the fully manual route manual route. 
# Installation - Manual (Not Tested: https://www.cloudflare.com/technical-resources/#ddclient)

# Installation - Semi-Autonomous (Recommended, follow below)

xergio

<?php

/*
POST / HTTP/1.1
Host: kinesis.<region>.<domain>
x-amz-Date: <Date>
Authorization: AWS4-HMAC-SHA256 Credential=<Credential>, SignedHeaders=content-type;date;host;user-agent;x-amz-date;x-amz-target;x-amzn-requestid, Signature=<Signature>
User-Agent: <UserAgentString>
Content-Type: application/x-amz-json-1.1
Content-Length: <PayloadSizeBytes>

xergio

<?xml version="1.0"?>
<!-- 
  dirlist.xslt - transform nginx's into lighttpd look-alike dirlistings

  I'm currently switching over completely from lighttpd to nginx. If you come
  up with a prettier stylesheet or other improvements, please tell me :)

-->
<!--
   Copyright (c) 2016 by Moritz Wilhelmy <mw@barfooze.de>

xergio

Deploy react app with gitlab.com and RSYNC

This is tutorial is about simple client-server file updating. This is not blue-green deploy!

Protocol: RSYNC through SSH. Tested on target server: Ubuntu 16.04 x64. (suitable for Ubuntu 14.x).

xergio

I was tired of Chrome eating all my laptop resources so I decided to put some limit to it with cgroup.

As I was using Ubuntu 12.04 with support for cgroup, I installed the package cgroup-bin and add the following group to the file /etc/cgconfig.conf:

group browsers {
    cpu {
#       Set the relative share of CPU resources equal to 25%
        cpu.shares = "256";
 }

xergio

Install python-pip

sudo apt-get install python-pip libcairo2 python-cairo

Install Graphite and Dependencies

pip install carbon
pip install whisper
pip install django
pip install django-tagging
pip install graphite-web

xergio

{
    ["outline"] = true,
    ["fontSize"] = 28,
    ["color"] = {
        [1] = 1,
        [2] = 0.086274509803922,
        [3] = 0.11372549019608,
        [4] = 1,
    },
    ["displayText"] = "%c",

xergio

Build the following and make it run as fast as you possibly can using Python 3 (vanilla). The faster it runs, the more you will impress us!

Your code should:

• Download this 2.2GB file: https://s3.amazonaws.com/carto-1000x/data/yellow_tripdata_2016-01.csv
• Count the lines in the file
• Calculate the average value of the tip_amount field.

All of that in the most efficient way you can come up with.

xergio

ּ_בּ
בּ_בּ
טּ_טּ
כּ‗כּ
לּ_לּ
מּ_מּ
סּ_סּ
תּ_תּ
٩(×̯×)۶
٩(̾●̮̮̃̾•̃̾)۶

xergio

Client-side SSL

For excessively paranoid client authentication.

Using self-signed certificate.

Create a Certificate Authority root (which represents this server)

Organization & Common Name: Some human identifier for this server CA.

openssl genrsa -des3 -out ca.key 4096
openssl req -new -x509 -days 365 -key ca.key -out ca.crt